Changelog
*********


5.7.6 (6 May 2019)
==================

**Security Fix**

Evidently, there were some upstream dependencies which required
vulnerable versions of "urllib3" and "requests". These have been
addressed.

   * CVE-2018-20060, CVE-2019-11324, CVE-2018-18074 are addressed by
     this update. Fixed in #1395 (cburgess)

**Bug Fixes**

   * Allow aliases in Elasticsearch versions >= 6.5.0 to refer to
     more than one index, if "is_write_index" is present and one index
     has it set to *True*. Requested in #1342 (untergeek)


5.7.5 (26 April 2019)
=====================

This has to be a new record with 5 releases in 3 days, however, as a
wonderful aside, this release is the Curator Haiku release (if you
don't know why, look up the structure of a Haiku).

**Bug Fix**

   * Persistent ILM filter error has finally been caught.
     Apparently, in Python, a list of lists "[[]]" will evaluate as
     existing, because it has one array element, even if that element
     is empty. So, this is my bad, but it is fixed now. (untergeek)


5.7.4 (25 April 2019)
=====================

**Bug Fix**

   * ILM filter was reading from full index list, rather than the
     working list Reported in #1389 (untergeek)


5.7.3 (24 April 2019)
=====================

**Bug Fix**

   * Still further package collisions with "urllib3" between "boto3"
     and "requests".  It was working, but with an unacceptable error,
     which is addressed in release 5.7.3. (untergeek)


5.7.2 (24 April 2019)
=====================

**Bug Fix**

   * Fix "urllib3" dependency collision on account of "boto3"
     (untergeek)


5.7.1 (24 April 2019)
=====================

We do not speak of 5.7.1


5.7.0 (24 April 2019)
=====================

**New**

   * Support for "elasticsearch-py" 7.0.0 (untergeek)

   * Support for Elasticsearch 7.0 #1371 (untergeek)

   * TravisCI testing for Elasticsearch 6.5, 6.6, 6.7, and 7.0
     (untergeek)

   * Allow shrink action to use multiple data paths #1350 (IzekChen)

**Bug Fixes**

   * Fix "regex" pattern filter to use "re.search" #1355
     (matthewdupre)

   * Report rollover results in both dry-run and regular runs.
     Requested in #1313 (untergeek)

   * Hide passwords in DEBUG logs. Requested in #1336 (untergeek)

   * With ILM fully released, Curator tests now correctly use the
     "allow_ilm_indices" option. (untergeek)

**Documentation**

   * Many thanks to those who submitted documentation fixes, both
     factual as well as typos!


5.6.0 (13 November 2018)
========================

**New**

   * The "empty" filter has been exposed for general use.  This
     filter matches indices with no documents. (jrask) #1264

   * Added tests for Elasticsearch 6.3 and 6.4 releases. (untergeek)

   * Sort indices alphabetically before sorting by age. (tschroeder-
     zendesk) #1290

   * Add "shards" filtertype (cushind) #1298

**Bug Fixes**

   * Fix YAML linting so that YAML errors are caught and displayed
     on the command line. Reported in #1237 (untergeek)

   * Pin "click" version for compatibility. (Andrewsville) #1280

   * Allow much older epoch timestamps (rsteneteg) #1296

   * Reindex action respects "ignore_empty_list" flag (untergeek)
     #1297

   * Update ILM index version minimum to 6.6.0 (untergeek)

   * Catch reindex failures properly. Reported in #1260 (untergeek)

**Documentation**

   * Added Reindex example to the sidebar. (Nostalgiac) #1227

   * Fix Rollover example text and typos. (untergeek)


5.5.4 (23 May 2018)
===================

**Bug Fix**

   * Extra args in show.py prevented show_snapshots from executing
     (untergeek)


5.5.3 (21 May 2018)
===================

Short release cycle here specifically to address the Snapshot restore
issue raised in #1192

**Changes**

   * By default, filter out indices with "index.lifecycle.name" set.
     This can be overridden with the option "allow_ilm_indices" with
     the caveat that you are on your own if there are conflicts. NOTE:
     The Index Lifecycle Management feature will not appear in
     Elasticsearch until 6.4.0

   * Removed some unused files from the repository.

**Bug Fixes**

   * Fix an ambiguously designed Alias test (untergeek)

   * Snapshot action will now raise an exception if the snapshot
     does not complete with state "SUCCESS". Reported in #1192
     (untergeek)

   * The show_indices and show_snapshots singletons were not working
     within the new framework. They've been fixed now.


5.5.2 (14 May 2018)
===================

**Changes**

   * The "alias", "restore", "rollover", and "shrink"  actions have
     been added to "curator_cli", along with a revamped method to
     manage/add actions in the future.

   * Updated "certifi" dependency to "2018.4.16"

   * Added "six" dependency

   * Permit the use of versions 6.1 and greater of the
     "elasticsearch" python module.  There are issues with SSL
     contexts in the 6.0 release that prevent Curator from being able
     to use this version. Currently the requirement version string is
     "elasticsearch>=5.5.2,!=6.0.0,<7.0.0"

   * Start of pylint cleanup, and use of *six* *string_types*.
     (untergeek)

**Bug Fixes**

   * *unit_count_pattern* setting can cause indices to mistakenly be
     included in an index filter. Fixed in #1206 (soenkeliebau)

   * Fix rollover _check_max_size() call. Reported in #1202 by
     @diranged (untergeek).

   * Update tested versions of Elasticsearch. (untergeek).

   * Update setup.cfg to install dependencies during source install.
     (untergeek)

   * Fix reference to unset variable name in log output at
     https://gi
     thub.com/elastic/curator/blob/v5.5.1/curator/actions.py#L2145 It
     should be *idx* instead of *index*. (untergeek).

   * Alias action should raise *NoIndices* exception if
     *warn_if_no_indices* is *True*, and no *add* or *remove* sub-
     actions are found, rather than raising an *ActionError*. Reported
     in #1209 (untergeek).

**Documentation**

   * Clarify inclusive filtering for allocated filter. Fixed in
     #1203 (geekpete)

   * Fix Kibana filter description. #1199 (quartett-opa)

   * Add missing documentation about the "new_name" option for
     rollover. Reported in #1197 (untergeek)


5.5.1 (22 March 2018)
=====================

**Bug Fixes**

   * Fix "pip" installation issues for older versions of Python
     #1183 (untergeek)


5.5.0 (21 March 2018)
=====================

**New Features**

   * Add "wait_for_rebalance" as an option for "shrink" action. By
     default the behavior remains unchanged. You can now set this to
     False though to allow the shrink action to only check that the
     index being shrunk has finished being relocated and it will not
     wait for the cluster to rebalance. #1129 (tschroeder-zendesk)

   * Work around for extremely large cluster states. #1142 (rewiko)

   * Add CI tests for Elasticsearch versions 6.1 and 6.2 (untergeek)

   * Add Elasticsearch datemath support for snapshot names #1078
     (untergeek)

   * Support "max_size" as a rollover condition for Elasticsearch
     versions 6.1.0 and up. #1140 (untergeek)

   * Skip indices with a document count of 0 when using "source:
     field_stats" to do "age" or "period" type filtering. #1130
     (untergeek)

**Bug Fixes**

   * Fix missing node information in log line. #1142 (untergeek)

   * Fix default options in code that were causing schema validation
     errors after "voluptuous" upgrade to 0.11.1. Reported in #1149,
     fixed in #1156 (untergeek)

   * Disallow empty lists as reindex source.  Raise exception if
     that happens. Reported in #1139 (untergeek)

   * Set a "timeout_override" for "delete_snapshots" to catch cases
     where slower repository network and/or disk access can cause a
     snapshot delete to take longer than the default 30 second client
     timeout. #1133 (untergeek)

   * Add AWS ES 5.1 support. #1172 (wanix)

   * Add missing "period" filter arguments for "delete_snapshots".
     Reported in #1173 (untergeek)

   * Fix kibana filtertype to catch newer index names. Reported in
     #1171 (untergeek)

   * Re-order the closed indices filter for the Replicas action to
     take place *before* the empty list check. Reported in #1180 by
     "@agomerz" (untergeek)

**General**

   * Deprecate testing for Python 3.4.  It is no longer being
     supported by Python.

   * Increase logging to show error when "master_only" is true and
     there are multiple hosts.

**Documentation**

   * Correct a misunderstanding about the nature of rollover
     conditions. #1144 (untergeek)

   * Correct links to the field_stats API, as it is non-existent in
     Elasticsearch 6.x. (untergeek)

   * Add a warning about using forcemerge on active indices. #1153
     (untergeek)

   * Fix select URLs in pip installation from source to not be 404
     #1133 (untergeek)

   * Fix an error in regex filter documentation #1138 (arne-cl)


5.4.1 (6 December 2017)
=======================

**Bug Fixes**

   * Improve Dockerfile to build from source and produce slimmer
     image #1111 (mikn)

   * Fix "filter_kibana" to correctly use "exclude" argument #1116
     (cjuroz)

   * Fix *ssl_no_validate* behavior within AWS ES #1118 (igalarzab)

   * Improve command-line exception management #1119 (4383)

   * Make "alias" action always process "remove" before "add" to
     prevent undesired alias removals. #1120 (untergeek)

**General**

   * Bump ES versions in Travis CI

**Documentation**

   * Remove "unit_count" parameter doc for parameter that no longer
     exists #1107 (dashford)

   * Add missing "exclude: True" in "timestring" docs #1117
     (GregMefford)


5.4.0 (13 November 2017)
========================

**Announcement**

   * Support for Elasticsearch 6.0!!! Yes!

**New Features**

   * The "field_stats" API may be gone from Elasticsearch, but its
     utility cannot be denied.  And so, Curator has replaced the
     "field_stats" API call with a small aggregation query.  This will
     be perhaps a bit more costly in performance terms, as this small
     aggregation query must be made to each index in sequence, rather
     than as a one-shot call, like the "field_stats" API call.  But
     the benefit will remain available, and it's the only major API
     that did not persevere between Elasticsearch 5.x and 6.x that was
     needed by Curator.


5.3.0 (31 October 2017)
=======================

**New Features**

   * With the period filter and field_stats, it is useful to match
     indices that fit *within* the period, rather than just their
     start dates.  This is now possible with "intersect".  See more in
     the documentation. Requested in #1045. (untergeek)

   * Add a "restore" function to "curator_cli" singleton. Mentioned
     in #851 (alexef)

   * Add "pattern" to the "count" filter.  This is particularly
     useful when working with rollover indices.  Requested in #1044
     (untergeek)

   * The "es_repo_mgr create" command now can take
     "skip_repo_fs_check" as an argument (default is False) #1072
     (alexef)

   * Add "pattern_type" feature expansion to the "period" filter.
     The default behavior is "pattern_type='relative'", which
     preserves existing behaviors so users with existing
     configurations can continue to use them without interruption.
     The new "pattern_type" is "absolute", which allows you to specify
     hard dates for "date_from" and "date_to", while
     "date_from_format" and "date_to_format" are strftime strings to
     interpret the from and to dates. Requested in #1047 (untergeek)

   * Add "copy_aliases" option to the "shrink" action. So this
     option is only set in the "shrink" action. The default value of
     the option is "copy_aliases: 'False'" and it does nothing. If you
     set to "copy_aliases: 'True'", you could copy the aliases from
     the source index to the target index. Requested in #1060
     (monkey3199)

   * IAM Credentials can now be retrieved from the environment using
     the Boto3 Credentials provider. #1084 (kobuskc)

**Bug Fixes**

   * Delete the target index (if it exists) in the event that a
     shrink fails. Requested in #1058 (untergeek)

   * Fixed an integration test that could fail in the waning days of
     a month.

   * Fix build system anomalies for both unix and windows.

**Documentation**

   * Set repository access to be https by default.

   * Add documentation for "copy_aliases" option.


5.2.0 (1 September 2017)
========================

**New Features**

   * Shrink action! Apologies to all who have patiently waited for
     this feature.  It's been a long time coming, but it is hopefully
     worth the wait.  There are a lot of checks and tests associated
     with this action, as there are many conditions that have to be
     met in order for a shrink to take place.  Curator will try its
     best to ensure that all of these conditions are met so you can
     comfortably rest assured that shrink will work properly
     unattended.  See the documentation for more information.

   * The "cli" function has been split into "cli" and "run"
     functions. The behavior of "cli" will be indistinguishable from
     previous releases, preserving API integrity.  The new "run"
     function allows lambda and other users to *run* Curator from the
     API with only a client configuration file and action file as
     arguments. Requested in #1031 (untergeek)

   * Allow use of time/date string interpolation for Rollover index
     naming. Added in #1010 (tschroeder-zendesk)

   * New "unit_count_pattern" allows you to derive the "unit_count"
     from the index name itself.  This involves regular expressions,
     so be sure to do lots of testing in "--dry-run" mode before
     deploying to production. Added by (soenkeliebau) in #997

**Bug Fixes**

   * Reindex "request_body" allows for 2 different "size" options.
     One limits the number of documents reindexed.  The other is for
     batch sizing. The batch sizing option was missing from the schema
     validator.  This has been corrected.  Reported in #1038
     (untergeek)

   * A few sundry logging and notification changes were made.


5.1.2 (08 August 2017)
======================

**Errata**

   * An update to Elasticsearch 5.5.0 changes the behavior of
     "filter_by_aliases", differing from previous 5.x versions.

     If a list of aliases is provided, indices must appear in *all*
     listed aliases or a 404 error will result, leading to no indices
     being matched. In older versions, if the index was associated
     with even one of the aliases in aliases, it would result in a
     match.

     Tests and documentation have been updated to address these
     changes.

   * Debian 9 changed SSL versions, which means that the pre-built
     debian packages no longer work in Debian 9.  In the short term,
     this requires a new repository.  In the long term, I will try to
     get a better repository system working for these so they all work
     together, better. Requested in #998 (untergeek)

**Bug Fixes**

   * Support date math in reindex operations better.  It did work
     previously, but would report failure because the test was looking
     for the index with that name from a list of indices, rather than
     letting Elasticsearch do the date math.  Reported by DPattee in
     #1008 (untergeek)

   * Under rare circumstances, snapshot delete (or create) actions
     could fail, even when there were no snapshots in state
     "IN_PROGRESS".  This was tracked down by JD557 as a collision
     with a previously deleted snapshot that hadn't finished deleting.
     It could be seen in the tasks API.  An additional test for
     snapshot activity in the tasks API has been added to cover this
     scenario.  Reported in #999 (untergeek)

   * The "restore_check" function did not work properly with
     wildcard index patterns.  This has been rectified, and an
     integration test added to satisfy this.  Reported in #989
     (untergeek)

   * Make Curator report the Curator version, and not just reiterate
     the elasticsearch version when reporting version
     incompatibilities. Reported in #992. (untergeek)

   * Fix repository/snapshot name logging issue. #1005 (jpcarey)

   * Fix Windows build issue #1014 (untergeek)

**Documentation**

   * Fix/improve rST API documentation.

   * Thanks to many users who not only found and reported
     documentation issues, but also submitted corrections.


5.1.1 (8 June 2017)
===================

**Bug Fixes**

   * Mock and cx_Freeze don't play well together.  Packages weren't
     working, so I reverted the string-based comparison as before.


5.1.0 (8 June 2017)
===================

**New Features**

   * Index Settings are here! First requested as far back as #160,
     it's been requested in various forms culminating in #656.  The
     official documentation addresses the usage. (untergeek)

   * Remote reindex now adds the ability to migrate from one cluster
     to another, preserving the index names, or optionally adding a
     prefix and/or a suffix. The official documentation shows you how.
     (untergeek)

   * Added support for naming rollover indices. #970 (jurajseffer)

   * Testing against ES 5.4.1, 5.3.3

**Bug Fixes**

   * Since Curator no longer supports old versions of python,
     convert tests to use "isinstance". #973 (untergeek)

   * Fix stray instance of "is not" comparison instead of "!=" #972
     (untergeek)

   * Increase remote client timeout to 180 seconds for remote
     reindex. #930 (untergeek)

**General**

   * elasticsearch-py dependency bumped to 5.4.0

   * Added mock dependency due to isinstance and testing
     requirements

   * AWS ES 5.3 officially supports Curator now.  Documentation has
     been updated to reflect this.


5.0.4 (16 May 2017)
===================

**Bug Fixes**

   * The "_recovery" check needs to compare using "!=" instead of
     "is not", which apparently does not accurately compare unicode
     strings. Reported in #966 (untergeek)


5.0.3 (15 May 2017)
===================

**Bug Fixes**

   * Restoring a snapshot on an exceptionally fast cluster/node can
     create a race condition where a "_recovery" check returns an
     empty dictionary "{}", which causes Curator to fail.  Added test
     and code to correct this. Reported in #962. (untergeek)


5.0.2 (4 May 2017)
==================

**Bug Fixes**

   * Nasty bug in schema validation fixed where boolean options or
     filter flags would validate as "True" if non-boolean types were
     submitted. Reported in #945. (untergeek)

   * Check for presence of alias after reindex, in case the reindex
     was to an alias. Reported in #941. (untergeek)

   * Fix an edge case where an index named with *1970.01.01* could
     not be sorted by index-name age. Reported in #951. (untergeek)

   * Update tests to include ES 5.3.2

   * Bump certifi requirement to 2017.4.17.

**Documentation**

   * Document substitute strftime symbols for doing ISO Week
     timestrings added in #932. (untergeek)

   * Document how to include file paths better. Fixes #944.
     (untergeek)


5.0.1 (10 April 2017)
=====================

**Bug Fixes**

   * Fixed default values for "include_global_state" on the restore
     action to be in line with defaults in Elasticsearch 5.3

**Documentation**

   * Huge improvement to documenation, with many more examples.

   * Address age filter limitations per #859 (untergeek)

   * Address date matching behavior better per #858 (untergeek)


5.0.0 (5 April 2017)
====================

The full feature set of 5.0 (including alpha releases) is included
here.

**New Features**

   * Reindex is here! The new reindex action has a ton of
     flexibility. You can even reindex from remote locations, so long
     as the remote cluster is Elasticsearch 1.4 or newer.

   * Added the "period" filter (#733). This allows you to select
     indices or snapshots, based on whether they fit within a period
     of hours, days, weeks, months, or years.

   * Add dedicated "wait for completion" functionality. This
     supports health checks, recovery (restore) checks, snapshot
     checks, and operations which support the new tasks API.  All
     actions which can use this have been refactored to take advantage
     of this.  The benefit of this new feature is that client timeouts
     will be less likely to happen when performing long operations,
     like snapshot and restore.

     NOTE: There is one caveat: forceMerge does not support this, per
     the Elasticsearch API. A forceMerge call will hold the client
     until complete, or the client times out.  There is no clean way
     around this that I can discern.

   * Elasticsearch date math naming is supported and documented for
     the "create_index" action.  An integration test is included for
     validation.

   * Allow allocation action to unset a key/value pair by using an
     empty value. Requested in #906. (untergeek)

   * Added support for the Rollover API. Requested in #898, and by
     countless others.

   * Added "warn_if_no_indices" option for "alias" action in
     response to #883.  Using this option will permit the "alias" add
     or remove to continue with a logged warning, even if the filters
     result in a "NoIndices" condition. Use with care.

**General**

   * Bumped "click" (python module) version dependency to 6.7

   * Bumped "urllib3" (python module) version dependency to 1.20

   * Bumped "elasticsearch" (python module) version dependency to
     5.3

   * Refactored a ton of code to be cleaner and hopefully more
     consistent.

**Bug Fixes**

   * Curator now logs version incompatibilities as an error, rather
     than just raising an Exception. #874 (untergeek)

   * The "get_repository()" function now properly raises an
     exception instead of returning *False* if nothing is found. #761
     (untergeek)

   * Check if an index is in an alias before attempting to delete it
     from the alias.  Issue raised in #887. (untergeek)

   * Fix allocation issues when using Elasticsearch 5.1+. Issue
     raised in #871 (untergeek)

**Documentation**

   * Add missing repository arg to auto-gen API docs. Reported in
     #888 (untergeek)

   * Add all new documentation and clean up for v5 specific.

**Breaking Changes**

   * IndexList no longer checks to see if there are indices on
     initialization.


5.0.0a1 (23 March 2017)
=======================

This is the first alpha release of Curator 5.  This should not be used
for production! There *will* be many more changes before 5.0.0 is
released.

**New Features**

   * Allow allocation action to unset a key/value pair by using an
     empty value. Requested in #906. (untergeek)

   * Added support for the Rollover API. Requested in #898, and by
     countless others.

   * Added "warn_if_no_indices" option for "alias" action in
     response to #883.  Using this option will permit the "alias" add
     or remove to continue with a logged warning, even if the filters
     result in a "NoIndices" condition. Use with care.

**Bug Fixes**

   * Check if an index is in an alias before attempting to delete it
     from the alias.  Issue raised in #887. (untergeek)

   * Fix allocation issues when using Elasticsearch 5.1+. Issue
     raised in #871 (untergeek)

**Documentation**

   * Add missing repository arg to auto-gen API docs. Reported in
     #888 (untergeek)


4.2.6 (27 January 2016)
=======================

**General**

   * Update Curator to use version 5.1 of the "elasticsearch-py"
     python module. With this change, there will be no reverse
     compatibility with Elasticsearch 2.x.  For 2.x versions, continue
     to use the 4.x branches of Curator.

   * Tests were updated to reflect the changes in API calls, which
     were minimal.

   * Remove "official" support for Python 2.6. If you must use
     Curator on a system that uses Python 2.6 (RHEL/CentOS 6 users),
     it is recommended that you use the official RPM package as it is
     a frozen binary built on Python 3.5.x which will not conflict
     with your system Python.

   * Use "isinstance()" to verify client object. #862 (cp2587)

   * Prune older versions from Travis CI tests.

   * Update "certifi" dependency to latest version

**Documentation**

   * Add version compatibility section to official documentation.

   * Update docs to reflect changes.  Remove cruft and references to
     older versions.


4.2.5 (22 December 2016)
========================

**General**

   * Add and increment test versions for Travis CI. #839 (untergeek)

   * Make *filter_list* optional in snapshot, show_snapshot and
     show_indices singleton actions. #853 (alexef)

**Bug Fixes**

   * Fix cli integration test when different host/port are
     specified. Reported in #843 (untergeek)

   * Catch empty list condition during filter iteration in singleton
     actions. Reported in #848 (untergeek)

**Documentation**

   * Add docs regarding how filters are ANDed together, and how to
     do an OR with the regex pattern filter type. Requested in #842
     (untergeek)

   * Fix typo in Click version in docs. #850 (breml)

   * Where applicable, replace *[source,text]* with *[source,yaml]*
     for better formatting in the resulting docs.


4.2.4 (7 December 2016)
=======================

**Bug Fixes**

   * "--wait_for_completion" should be *True* by default for
     Snapshot singleton action.  Reported in #829 (untergeek)

   * Increase *version_max* to 5.1.99. Prematurely reported in #832
     (untergeek)

   * Make the '.security' index visible for snapshots so long as
     proper credentials are used. Reported in #826 (untergeek)


4.2.3.post1 (22 November 2016)
==============================

This fix is *only* going in for "pip"-based installs.  There are no
other code changes.

**Bug Fixes**

   * Fixed incorrect assumption of PyPI picking up dependency for
     certifi.  It is still a dependency, but should not affect "pip"
     installs with an error any more.  Reported in #821 (untergeek)


4.2.3 (21 November 2016)
========================

4.2.2 was pulled immediately after release after it was discovered
that the Windows binary distributions were still not including the
certifi-provided certificates.  This has now been remedied.

**General**

   * "certifi" is now officially a requirement.

   * "setup.py" now forcibly includes the "certifi" certificate PEM
     file in the "frozen" distributions (i.e., the compiled versions).
     The "get_client" method was updated to reflect this and catch it
     for both the Linux and Windows binary distributions.  This should
     *finally* put to rest #810


4.2.2 (21 November 2016)
========================

**Bug Fixes**

   * The certifi-provided certificates were not propagating to the
     compiled RPM/DEB packages.  This has been corrected.  Reported in
     #810 (untergeek)

**General**

   * Added missing "--ignore_empty_list" option to singleton
     actions. Requested in #812 (untergeek)

**Documentation**

   * Add a FAQ entry regarding the click module's need for Unicode
     when using Python 3.  Kind of a bug fix too, as the entry_points
     were altered to catch this omission and report a potential
     solution on the command-line. Reported in #814 (untergeek)

   * Change the "Command-Line" documentation header to be "Running
     Curator"


4.2.1 (8 November 2016)
=======================

**Bug Fixes**

   * In the course of package release testing, an undesirable
     scenario was caught where boolean flags default values for
     "curator_cli" were improperly overriding values from a yaml
     config file.

**General**

   * Adding in direct download URLs for the RPM, DEB, tarball and
     zip packages.


4.2.0 (4 November 2016)
=======================

**New Features**

   * Shard routing allocation enable/disable. This will allow you to
     disable shard allocation routing before performing one or more
     actions, and then re-enable after it is complete. Requested in
     #446 (untergeek)

   * Curator 3.x-style command-line.  This is now "curator_cli", to
     differentiate between the current binary.  Not all actions are
     available, but the most commonly used ones are.  With the
     addition in 4.1.0 of schema and configuration validation, there's
     even a way to still do filter chaining on the command-line!
     Requested in #767, and by many other users (untergeek)

**General**

   * Update testing to the most recent versions.

   * Lock elasticsearch-py module version at >= 2.4.0 and <= 3.0.0.
     There are API changes in the 5.0 release that cause tests to
     fail.

**Bug Fixes**

   * Guarantee that binary packages are built from the latest Python
     + libraries. This ensures that SSL/TLS will work without warning
     messages about insecure connections, unless they actually are
     insecure. Reported in #780, though the reported problem isn't
     what was fixed. The fix is needed based on what was discovered
     while troubleshooting the problem. (untergeek)


4.1.2 (6 October 2016)
======================

This release does not actually add any new code to Curator, but
instead improves documentation and includes new linux binary packages.

**General**

   * New Curator binary packages for common Linux systems! These
     will be found in the same repositories that the python-based
     packages are in, but have no dependencies.  All necessary
     libraries/modules are bundled with the binary, so everything
     should work out of the box. This feature doesn't change any other
     behavior, so it's not a major release.

     These binaries have been tested in:
        * CentOS 6 & 7

        * Ubuntu 12.04, 14.04, 16.04

        * Debian 8

     They do not work in Debian 7 (library mismatch).  They may work
     in other systems, but that is untested.

     The script used is in the unix_packages directory.  The
     Vagrantfiles for the various build systems are in the Vagrant
     directory.

**Bug Fixes**

   * The only bug that can be called a bug is actually a stray
     ".exe" suffix in the binary package creation section (cx_freeze)
     of "setup.py".  The Windows binaries should have ".exe"
     extensions, but not unix variants.

   * Elasticsearch 5.0.0-beta1 testing revealed that a document ID
     is required during document creation in tests.  This has been
     fixed, and a redundant bit of code in the forcemerge integration
     test was removed.

**Documentation**

   * The documentation has been updated and improved.  Examples and
     installation are now top-level events, with the sub-sections each
     having their own link. They also now show how to install and use
     the binary packages, and the section on installation from source
     has been improved.  The missing section on installing the
     voluptuous schema verification module has been written and
     included. #776 (untergeek)


4.1.1 (27 September 2016)
=========================

**Bug Fixes**

   * String-based booleans are now properly coerced.  This fixes an
     issue where *True*/*False* were used in environment variables,
     but not recognized. #765 (untergeek)

   * Fix missing *count* method in "__map_method" in SnapshotList.
     Reported in #766 (untergeek)

**General**

   * Update es_repo_mgr to use the same client/logging YAML config
     file. Requested in #752 (untergeek)

**Schema Validation**

   * Cases where "source" was not defined in a filter (but should
     have been) were informing users that a *timestring* field was
     there that shouldn't have been.  This edge case has been
     corrected.

**Documentation**

   * Added notifications and FAQ entry to explain that AWS ES is not
     supported.


4.1.0 (6 September 2016)
========================

**New Features**

   * Configuration and Action file schema validation.  Requested in
     #674 (untergeek)

   * Alias filtertype! With this filter, you can select indices
     based on whether they are part of an alias.  Merged in #748
     (untergeek)

   * Count filtertype! With this filter, you can now configure
     Curator to only keep the most recent *n* indices (or snapshots!).
     Merged in #749 (untergeek)

   * Experimental! Use environment variables in your YAML
     configuration files. This was a popular request, #697.
     (untergeek)

**General**

   * New requirement! "voluptuous" Python schema validation module

   * Requirement version bump:  Now requires "elasticsearch-py"
     2.4.0

**Bug Fixes**

   * "delete_aliases" option in "close" action no longer results in
     an error if not all selected indices have an alias.  Add test to
     confirm expected behavior. Reported in #736 (untergeek)

**Documentation**

   * Add information to FAQ regarding indices created before
     Elasticsearch 1.4. Merged in #747


4.0.6 (15 August 2016)
======================

**Bug Fixes**

   * Update old calls used with ES 1.x to reflect changes in 2.x+.
     This was necessary to work with Elasticsearch 5.0.0-alpha5. Fixed
     in #728 (untergeek)

**Doc Fixes**

   * Add section detailing that the value of a "value" filter
     element should be encapsulated in single quotes. Reported in
     #726. (untergeek)


4.0.5 (3 August 2016)
=====================

**Bug Fixes**

   * Fix incorrect variable name for AWS Region reported in #679
     (basex)

   * Fix "filter_by_space()" to not fail when index age metadata is
     not present.  Indices without the appropriate age metadata will
     instead be excluded, with a debug-level message. Reported in #724
     (untergeek)

**Doc Fixes**

   * Fix documentation for the space filter and the source filter
     element.


4.0.4 (1 August 2016)
=====================

**Bug Fixes**

   * Fix incorrect variable name in Allocation action. #706
     (lukewaite)

   * Incorrect error message in "create_snapshot_body" reported in
     #711 (untergeek)

   * Test for empty index list object should happen in action
     initialization for snapshot action. Discovered in #711.
     (untergeek)

**Doc Fixes**

   * Add menus to asciidoc chapters #704 (untergeek)

   * Add pyyaml dependency #710 (dtrv)


4.0.3 (22 July 2016)
====================

**General**

   * 4.0.2 didn't work for "pip" installs due to an omission in the
     MANIFEST.in file.  This came up during release testing, but
     before the release was fully published. As the release was never
     fully published, this should not have actually affected anyone.

**Bug Fixes**

   * These are the same as 4.0.2, but it was never fully released.

   * All default settings are now values returned from functions
     instead of constants.  This was resulting in settings getting
     stomped on. New test addresses the original complaint.  This
     removes the need for "deepcopy". See issue #687 (untergeek)

   * Fix "host" vs. "hosts" issue in "get_client()" rather than the
     non-functional function in "repomgrcli.py".

   * Update versions being tested.

   * Community contributed doc fixes.

   * Reduced logging verbosity by making most messages debug level.
     #684 (untergeek)

   * Fixed log whitelist behavior (and switched to blacklisting
     instead). Default behavior will now filter traffic from the
     "elasticsearch" and "urllib3" modules.

   * Fix Travis CI testing to accept some skipped tests, as needed.
     #695 (untergeek)

   * Fix missing empty index test in snapshot action. #682
     (sherzberg)


4.0.2 (22 July 2016)
====================

**Bug Fixes**

   * All default settings are now values returned from functions
     instead of constants.  This was resulting in settings getting
     stomped on. New test addresses the original complaint.  This
     removes the need for "deepcopy". See issue #687 (untergeek)

   * Fix "host" vs. "hosts" issue in "get_client()" rather than the
     non-functional function in "repomgrcli.py".

   * Update versions being tested.

   * Community contributed doc fixes.

   * Reduced logging verbosity by making most messages debug level.
     #684 (untergeek)

   * Fixed log whitelist behavior (and switched to blacklisting
     instead). Default behavior will now filter traffic from the
     "elasticsearch" and "urllib3" modules.

   * Fix Travis CI testing to accept some skipped tests, as needed.
     #695 (untergeek)

   * Fix missing empty index test in snapshot action. #682
     (sherzberg)


4.0.1 (1 July 2016)
===================

**Bug Fixes**

   * Coerce Logstash/JSON logformat type timestamp value to always
     use UTC. #661 (untergeek)

   * Catch and remove indices from the actionable list if they do
     not have a *creation_date* field in settings.  This field was
     introduced in ES v1.4, so that indicates a rather old index. #663
     (untergeek)

   * Replace missing "state" filter for "snapshotlist". #665
     (untergeek)

   * Restore "es_repo_mgr" as a stopgap until other CLI scripts are
     added.  It will remain undocumented for now, as I am debating
     whether to make repository creation its own action in the API.
     #668 (untergeek)

   * Fix dry run results for snapshot action. #673 (untergeek)


4.0.0 (24 June 2016)
====================

It's official!  Curator 4.0.0 is released!

**Breaking Changes**

   * New and improved API!

   * Command-line changes.  No more command-line args, except for
     "-- config", "--actions", and "--dry-run":

        * "--config" points to a YAML client and logging
          configuration file. The default location is
          "~/.curator/curator.yml"

        * "--actions" arg points to a YAML action configuration file

        * "--dry-run" will simulate the action(s) which would have
          taken place, but not actually make any changes to the
          cluster or its indices.

**New Features**

   * Snapshot restore is here!

   * YAML configuration files.  Now a single file can define an
     entire batch of commands, each with their own filters, to be
     performed in sequence.

   * Sort by index age not only by index name (as with previous
     versions of Curator), but also by index *creation_date*, or by
     calculations from the Field Stats API on a timestamp field.

   * Atomically add/remove indices from aliases! This is possible by
     way of the new *IndexList* class and YAML configuration files.

   * State of indices pulled and stored in *IndexList* instance.
     Fewer API calls required to serially test for open/close,
     *size_in_bytes*, etc.

   * Filter by space now allows sorting by age!

   * Experimental! Use AWS IAM credentials to sign requests to
     Elasticsearch. This requires the end user to *manually* install
     the *requests_aws4auth* python module.

   * Optionally delete aliases from indices before closing.

   * An empty index or snapshot list no longer results in an error
     if you set "ignore_empty_list" to *True*.  If *True* it will
     still log that the action was not performed, but will continue to
     the next action. If 'False' it will log an ERROR and exit with
     code 1.

**API**

   * Updated API documentation

   * Class: *IndexList*. This pulls all indices at instantiation,
     and you apply filters, which are class methods.  You can iterate
     over as many filters as you like, in fact, due to the YAML config
     file.

   * Class: *SnapshotList*. This pulls all snapshots from the given
     repository at instantiation, and you apply filters, which are
     class methods.  You can iterate over as many filters as you like,
     in fact, due to the YAML config file.

   * Add *wait_for_completion* to Allocation and Replicas actions.
     These will use the client timeout, as set by default or
     *timeout_override*, to determine how long to wait for timeout.
     These are handled in batches of indices for now.

   * Allow *timeout_override* option for all actions.  This allows
     for different timeout values per action.

   * Improve API by giving each action its own *do_dry_run()*
     method.

**General**

   * Updated use documentation for Elastic main site.

   * Include example files for "--config" and "--actions".


4.0.0b2 (16 June 2016)
======================

**Second beta release of the 4.0 branch**

**New Feature**

   * An empty index or snapshot list no longer results in an error
     if you set "ignore_empty_list" to *True*.  If *True* it will
     still log that the action was not performed, but will continue to
     the next action. If 'False' it will log an ERROR and exit with
     code 1. (untergeek)


4.0.0b1 (13 June 2016)
======================

**First beta release of the 4.0 branch!**

The release notes will be rehashing the new features in 4.0, rather
than the bug fixes done during the alphas.

**Breaking Changes**

   * New and improved API!

   * Command-line changes.  No more command-line args, except for
     "-- config", "--actions", and "--dry-run":

        * "--config" points to a YAML client and logging
          configuration file. The default location is
          "~/.curator/curator.yml"

        * "--actions" arg points to a YAML action configuration file

        * "--dry-run" will simulate the action(s) which would have
          taken place, but not actually make any changes to the
          cluster or its indices.

**New Features**

   * Snapshot restore is here!

   * YAML configuration files.  Now a single file can define an
     entire batch of commands, each with their own filters, to be
     performed in sequence.

   * Sort by index age not only by index name (as with previous
     versions of Curator), but also by index *creation_date*, or by
     calculations from the Field Stats API on a timestamp field.

   * Atomically add/remove indices from aliases! This is possible by
     way of the new *IndexList* class and YAML configuration files.

   * State of indices pulled and stored in *IndexList* instance.
     Fewer API calls required to serially test for open/close,
     *size_in_bytes*, etc.

   * Filter by space now allows sorting by age!

   * Experimental! Use AWS IAM credentials to sign requests to
     Elasticsearch. This requires the end user to *manually* install
     the *requests_aws4auth* python module.

   * Optionally delete aliases from indices before closing.

**API**

   * Updated API documentation

   * Class: *IndexList*. This pulls all indices at instantiation,
     and you apply filters, which are class methods.  You can iterate
     over as many filters as you like, in fact, due to the YAML config
     file.

   * Class: *SnapshotList*. This pulls all snapshots from the given
     repository at instantiation, and you apply filters, which are
     class methods.  You can iterate over as many filters as you like,
     in fact, due to the YAML config file.

   * Add *wait_for_completion* to Allocation and Replicas actions.
     These will use the client timeout, as set by default or
     *timeout_override*, to determine how long to wait for timeout.
     These are handled in batches of indices for now.

   * Allow *timeout_override* option for all actions.  This allows
     for different timeout values per action.

   * Improve API by giving each action its own *do_dry_run()*
     method.

**General**

   * Updated use documentation for Elastic main site.

   * Include example files for "--config" and "--actions".


4.0.0a10 (10 June 2016)
=======================

**New Features**

   * Snapshot restore is here!

   * Optionally delete aliases from indices before closing. Fixes
     #644 (untergeek)

**General**

   * Add *wait_for_completion* to Allocation and Replicas actions.
     These will use the client timeout, as set by default or
     *timeout_override*, to determine how long to wait for timeout.
     These are handled in batches of indices for now.

   * Allow *timeout_override* option for all actions.  This allows
     for different timeout values per action.

**Bug Fixes**

   * Disallow use of *master_only* if multiple hosts are used. Fixes
     #615 (untergeek)

   * Fix an issue where arguments weren't being properly passed and
     populated.

   * ForceMerge replaced Optimize in ES 2.1.0.

   * Fix prune_nones to work with Python 2.6. Fixes #619 (untergeek)

   * Fix TimestringSearch to work with Python 2.6. Fixes #622
     (untergeek)

   * Add language classifiers to "setup.py".  Fixes #640 (untergeek)

   * Changed references to readthedocs.org to be readthedocs.io.


4.0.0a9 (27 Apr 2016)
=====================

**General**

   * Changed *create_index* API to use kwarg *extra_settings*
     instead of *body*

   * Normalized Alias action to use *name* instead of *alias*.  This
     simplifies documentation by reducing the number of option
     elements.

   * Streamlined some code

   * Made *exclude* a filter element setting for all filters.
     Updated all examples to show this.

   * Improved documentation

**New Features**

   * Alias action can now accept *extra_settings* to allow adding
     filters, and/or routing.


4.0.0a8 (26 Apr 2016)
=====================

**Bug Fixes**

   * Fix to use *optimize* with versions of Elasticsearch < 5.0

   * Fix missing setting in testvars


4.0.0a7 (25 Apr 2016)
=====================

**Bug Fixes**

   * Fix AWS4Auth error.


4.0.0a6 (25 Apr 2016)
=====================

**General**

   * Documentation updates.

   * Improve API by giving each action its own *do_dry_run()*
     method.

**Bug Fixes**

   * Do not escape characters other than "." and "-" in timestrings.
     Fixes #602 (untergeek)

** New Features**

   * Added *CreateIndex* action.


4.0.0a4 (21 Apr 2016)
=====================

**Bug Fixes**

   * Require *pyyaml* 3.10 or better.

   * In the case that no *options* are in an action, apply the
     defaults.


4.0.0a3 (21 Apr 2016)
=====================

It's time for Curator 4.0 alpha!

**Breaking Changes**

   * New API! (again?!)

   * Command-line changes.  No more command-line args, except for
     "-- config", "--actions", and "--dry-run":

        * "--config" points to a YAML client and logging
          configuration file. The default location is
          "~/.curator/curator.yml"

        * "--actions" arg points to a YAML action configuration file

        * "--dry-run" will simulate the action(s) which would have
          taken place, but not actually make any changes to the
          cluster or its indices.

**General**

   * Updated API documentation

   * Updated use documentation for Elastic main site.

   * Include example files for "--config" and "--actions".

**New Features**

   * Sort by index age not only by index name (as with previous
     versions of Curator), but also by index *creation_date*, or by
     calculations from the Field Stats API on a timestamp field.

   * Class: *IndexList*. This pulls all indices at instantiation,
     and you apply filters, which are class methods.  You can iterate
     over as many filters as you like, in fact, due to the YAML config
     file.

   * Class: *SnapshotList*. This pulls all snapshots from the given
     repository at instantiation, and you apply filters, which are
     class methods.  You can iterate over as many filters as you like,
     in fact, due to the YAML config file.

   * YAML configuration files.  Now a single file can define an
     entire batch of commands, each with their own filters, to be
     performed in sequence.

   * Atomically add/remove indices from aliases! This is possible by
     way of the new *IndexList* class and YAML configuration files.

   * State of indices pulled and stored in *IndexList* instance.
     Fewer API calls required to serially test for open/close,
     *size_in_bytes*, etc.

   * Filter by space now allows sorting by age!

   * Experimental! Use AWS IAM credentials to sign requests to
     Elasticsearch. This requires the end user to *manually* install
     the *requests_aws4auth* python module.


3.5.1 (21 March 2016)
=====================

**Bug fixes**

   * Add more logging information to snapshot delete method #582
     (untergeek)

   * Improve default timeout, logging, and exception handling for
     *seal* command #583 (untergeek)

   * Fix use of default snapshot name. #584 (untergeek)


3.5.0 (16 March 2016)
=====================

**General**

   * Add support for the *--client-cert* and *--client-key* command
     line parameters and client_cert and client_key parameters to the
     get_client() call. #520 (richm)

**Bug fixes**

   * Disallow users from creating snapshots with upper-case letters,
     which is not permitted by Elasticsearch. #562 (untergeek)

   * Remove *print()* command from "setup.py" as it causes issues
     with command-line retrieval of "--url", etc. #568 (thib-ack)

   * Remove unnecessary argument from *build_filter()* #530 (zzugg)

   * Allow day of year filter to be made up with 1, 2 or 3 digits
     #578 (petitout)


3.4.1 (10 February 2016)
========================

**General**

   * Update license copyright to 2016

   * Use slim python version with Docker #527 (xaka)

   * Changed "--master-only" exit code to 0 when connected to non-
     master node #540 (wkruse)

   * Add "cx_Freeze" capability to "setup.py", plus a
     "binary_release.py" script to simplify binary package creation.
     #554 (untergeek)

   * Set Elastic as author. #555 (untergeek)

   * Put repository creation methods into API and document them.
     Requested in #550 (untergeek)

**Bug fixes**

   * Fix sphinx documentation build error #506 (hydrapolic)

   * Ensure snapshots are found before iterating #507 (garyelephant)

   * Fix a doc inconsistency #509 (pmoust)

   * Fix a typo in *show* documentation #513 (pbamba)

   * Default to trying the cluster state for checking whether
     indices are closed, and then fall back to using the _cat API (for
     Amazon ES instances). #519 (untergeek)

   * Improve logging to show time delay between optimize runs, if
     selected. #525 (untergeek)

   * Allow elasticsearch-py module versions through 2.3.0 (a
     presumption at this point) #524 (untergeek)

   * Improve logging in snapshot api method to reveal when a
     repository appears to be missing. Reported in #551 (untergeek)

   * Test that "--timestring" has the correct variable for "--time-
     unit". Reported in #544 (untergeek)

   * Allocation will exit with exit_code 0 now when there are no
     indices to work on. Reported in #531 (untergeek)


3.4.0 (28 October 2015)
=======================

**General**

   * API change in elasticsearch-py 1.7.0 prevented alias
     operations. Fixed in #486 (HonzaKral)

   * During index selection you can now select only closed indices
     with "--closed-only". Does not impact "--all-indices" Reported in
     #476. Fixed in #487 (Basster)

   * API Changes in Elasticsearch 2.0.0 required some refactoring.
     All tests pass for ES versions 1.0.3 through 2.0.0-rc1.  Fixed in
     #488 (untergeek)

   * es_repo_mgr now has access to the same SSL options from #462.
     #489 (untergeek)

   * Logging improvements requested in #475. (untergeek)

   * Added "--quiet" flag. #494 (untergeek)

   * Fixed "index_closed" to work with AWS Elasticsearch. #499
     (univerio)

   * Acceptable versions of Elasticsearch-py module are 1.8.0 up to
     2.1.0 (untergeek)


3.3.0 (31 August 2015)
======================

**Announcement**

   * Curator is tested in Jenkins.  Each commit to the master branch
     is tested with both Python versions 2.7.6 and 3.4.0 against each
     of the following Elasticsearch versions: * 1.7_nightly *
     1.6_nightly * 1.7.0 * 1.6.1 * 1.5.1 * 1.4.4 * 1.3.9 * 1.2.4 *
     1.1.2 * 1.0.3

   * If you are using a version different from this, your results
     may vary.

**General**

   * Allocation type can now also be "include" or "exclude", in
     addition to the existing default "require" type. Add "--type" to
     the allocation command to specify the type. #443 (steffo)

   * Bump elasticsearch python module dependency to 1.6.0+ to enable
     synced_flush API call. Reported in #447 (untergeek)

   * Add SSL features, "--ssl-no-validate" and "certificate" to
     provide other ways to validate SSL connections to Elasticsearch.
     #436 (untergeek)

**Bug fixes**

   * Delete by space was only reporting space used by primary
     shards. Fixed to show all space consumed.  Reported in #455
     (untergeek)

   * Update exit codes and messages for snapshot selection.
     Reported in #452 (untergeek)

   * Fix potential int/float casting issues. Reported in #465
     (untergeek)


3.2.3 (16 July 2015)
====================

**Bug fix**

   * In order to address customer and community issues with bulk
     deletes, the "master_timeout" is now invoked for delete
     operations.  This should address 503s with 30s timeouts in the
     debug log, even when "--timeout" is set to a much higher value.
     The "master_timeout" is tied to the "--timeout" flag value, but
     will not exceed 300 seconds. #420 (untergeek)

**General**

   * Mixing it up a bit here by putting *General* second!  The only
     other changes are that logging has been improved for deletes so
     you won't need to have the "--debug" flag to see if you have
     error codes >= 400, and some code documentation improvements.


3.2.2 (13 July 2015)
====================

**General**

   * This is a very minor change.  The "mock" library recently
     removed support for Python 2.6.  As many Curator users are using
     RHEL/CentOS 6, which is pinned to Python 2.6, this requires the
     mock version referenced by Curator to also be pinned to a
     supported version ("mock==1.0.1").


3.2.1 (10 July 2015)
====================

**General**

   * Added delete verification & retry (fixed at 3x) to potentially
     cover an edge case in #420 (untergeek)

   * Since GitHub allows rST (reStructuredText) README documents,
     and that's what PyPI wants also, the README has been rebuilt in
     rST. (untergeek)

**Bug fixes**

   * If closing indices with ES 1.6+, and all indices are closed,
     ensure that the seal command does not try to seal all indices.
     Reported in #426 (untergeek)

   * Capture AttributeError when sealing indices if a non-
     TransportError occurs. Reported in #429 (untergeek)


3.2.0 (25 June 2015)
====================

**New!**

   * Added support to manually seal, or perform a [synced
     flush](http
     ://www.elastic.co/guide/en/elasticsearch/reference/current
     /indices-synced-flush.html) on indices with the "seal" command.
     #394 (untergeek)

   * Added *experimental* support for SSL certificate validation.
     In order for this to work, you must install the "certifi" python
     module: "pip install certifi" This feature *should* automatically
     work if the "certifi" module is installed.  Please report any
     issues.

**General**

   * Changed logging to go to stdout rather than stderr.  Reopened
     #121 and figured they were right.  This is better. (untergeek)

   * Exit code 99 was unpopular.  It has been removed. Reported in
     #371 and #391 (untergeek)

   * Add "--skip-repo-validation" flag for snapshots.  Do not
     validate write access to repository on all cluster nodes before
     proceeding. Useful for shared filesystems where intermittent
     timeouts can affect validation, but won't likely affect snapshot
     success. Requested in #396 (untergeek)

   * An alias no longer needs to be pre-existent in order to use the
     alias command.  #317 (untergeek)

   * es_repo_mgr now passes through upstream errors in the event a
     repository fails to be created.  Requested in #405 (untergeek)

**Bug fixes**

   * In rare cases, "*" wildcard would not expand.  Replaced with
     _all. Reported in #399 (untergeek)

   * Beginning with Elasticsearch 1.6, closed indices cannot have
     their replica count altered.  Attempting to do so results in this
     error: "org.elasticsearch.ElasticsearchIllegalArgumentException:
     Can't update [index.number_of_replicas] on closed indices
     [[test_index]] - can leave index in an unopenable state" As a
     result, the "change_replicas" method has been updated to prune
     closed indices.  This change will apply to all versions of
     Elasticsearch. Reported in #400 (untergeek)

   * Fixed es_repo_mgr repository creation verification error.
     Reported in #389 (untergeek)


3.1.0 (21 May 2015)
===================

**General**

   * If "wait_for_completion" is true, snapshot success is now
     tested and logged. Reported in #253 (untergeek)

   * Log & return false if a snapshot is already in progress
     (untergeek)

   * Logs individual deletes per index, even though they happen in
     batch mode. Also log individual snapshot deletions. Reported in
     #372 (untergeek)

   * Moved "chunk_index_list" from cli to api utils as it's now also
     used by "filter.py"

   * Added a warning and 10 second timer countdown if you use "--
     timestring" to filter indices, but do not use "--older-than" or "
     --newer-than" in conjunction with it. This is to address #348,
     which behavior isn't a bug, but prevents accidental action
     against all of your time-series indices. The warning and timer
     are not displayed for "show" and "--dry-run" operations.

   * Added tests for "es_repo_mgr" in #350

   * Doc fixes

**Bug fixes**

   * delete-by-space needed the same fix used for #245. Fixed in
     #353 (untergeek)

   * Increase default client timeout for "es_repo_mgr" as node
     discovery and availability checks for S3 repositories can take a
     bit.  Fixed in #352 (untergeek)

   * If an index is closed, indicate in "show" and "--dry-run"
     output. Reported in #327. (untergeek)

   * Fix issue where CLI parameters were not being passed to the
     "es_repo_mgr" create sub-command. Reported in #337. (feltnerm)


3.0.3 (27 Mar 2015)
===================

**Announcement**

This is a bug fix release. #319 and #320 are affecting a few users, so
this release is being expedited.

Test count: 228 Code coverage: 99%

**General**

   * Documentation for the CLI converted to Asciidoc and moved to
     htt
     p://www.elastic.co/guide/en/elasticsearch/client/curator/current
     /index.html

   * Improved logging, and refactored a few methods to help with
     this.

   * Dry-run output is now more like v2, with the index or snapshot
     in the log line, along with the command.  Several tests needed
     refactoring with this change, along with a bit of documentation.

**Bug fixes**

   * Fix links to repository in setup.py. Reported in #318
     (untergeek)

   * No more "--delay" with optimized indices. Reported in #319
     (untergeek)

   * "--request_timeout" not working as expected.  Reinstate the
     version 2 timeout override feature to prevent default timeouts
     for "optimize" and "snapshot" operations. Reported in #320
     (untergeek)

   * Reduce index count to 200 for
     test.integration.test_cli_commands
     .TestCLISnapshot.test_cli_snapshot_huge_list in order to reduce
     or eliminate Jenkins CI test timeouts. Reported in #324
     (untergeek)

   * "--dry-run" no longer calls "show", but will show output in the
     log, as in v2. This was a recurring complaint.  See #328
     (untergeek)


3.0.2 (23 Mar 2015)
===================

**Announcement**

This is a bug fix release.  #307 and #309 were big enough to warrant
an expedited release.

**Bug fixes**

   * Purge unneeded constants, and clean up config options for
     snapshot. Reported in #303 (untergeek)

   * Don't split large index list if performing snapshots. Reported
     in #307 (untergeek)

   * Act correctly if a zero value for *--older-than* or *--newer-
     than* is provided. #309 (untergeek)


3.0.1 (16 Mar 2015)
===================

**Announcement**

The "regex_iterate" method was horribly named.  It has been renamed to
"apply_filter".  Methods have been added to allow API users to build a
filtered list of indices similarly to how the CLI does.  This was an
oversight. Props to @SegFaultAX for pointing this out.

**General**

   * In conjunction with the rebrand to Elastic, URLs and
     documentation were updated.

   * Renamed horribly named *regex_iterate* method to *apply_filter*
     #298 (untergeek)

   * Added *build_filter* method to mimic CLI calls. #298
     (untergeek)

   * Added Examples page in the API documentation. #298 (untergeek)

**Bug fixes**

   * Refactored to show *--dry-run* info for *--disk-space* calls.
     Reported in #290 (untergeek)

   * Added list chunking so acting on huge lists of indices won't
     result in a URL bigger than 4096 bytes (Elasticsearch's default
     limit.)  Reported in https://github.com/elastic/curator/issues/2
     45#issuecomment-77916081

   * Refactored *to_csv()* method to be simpler.

   * Added and removed tests according to changes.  Code coverage
     still at 99%


3.0.0 (9 March 2015)
====================

**Release Notes**

The full release of Curator 3.0 is out!  Check out all of the changes
here!

*Note:* This release is _not_ reverse compatible with any previous
version.

Because 3.0 is a major point release, there have been some major
changes to both the API as well as the CLI arguments and structure.

Be sure to read the updated command-line specific docs in the
[wiki](https://github.com/elasticsearch/curator/wiki) and change your
command-line arguments accordingly.

The API docs are still at http://curator.readthedocs.io.  Be sure to
read the latest docs, or select the docs for 3.0.0.

**General**

   * **Breaking changes to the API.**  Because this is a major point
     revision, changes to the API have been made which are non-reverse
     compatible.  Before upgrading, be sure to update your scripts and
     test them thoroughly.

   * **Python 3 support** Somewhere along the line, Curator would no
     longer work with curator.  All tests now pass for both Python2
     and Python3, with 99% code coverage in both environments.

   * **New CLI library.** Using Click now. http://click.pocoo.org/3/
     This change is especially important as it allows very easy CLI
     integration testing.

   * **Pipelined filtering!** You can now use "--older-than" & "--
     newer-than" in the same command!  You can also provide your own
     regex via the "--regex" parameter.  You can use multiple
     instances of the "--exclude" flag.

   * **Manually include indices!** With the "--index" paramter, you
     can add an index to the working list.  You can provide multiple
     instances of the "--index" parameter as well!

   * **Tests!** So many tests now.  Test coverage of the API methods
     is at 100% now, and at 99% for the CLI methods.  This doesn't
     mean that all of the tests are perfect, or that I haven't missed
     some scenarios.  It does mean, however, that it will be much
     easier to write tests if something turns up missed.  It also
     means that any new functionality will now need to have tests.

   * **Iteration changes** Methods now only iterate through each
     index when appropriate!  In fact, the only commands that iterate
     are *alias* and *optimize*.  The *bloom* command will iterate,
     but only if you have added the *--delay* flag with a value
     greater than zero.

   * **Improved packaging!**  Methods have been moved into
     categories of "api" and "cli", and further broken out into
     individual modules to help them be easier to find and read.

   * Check for allocation before potentially re-applying an
     allocation rule. #273 (ferki)

   * Assigning replica count and routing allocation rules _can_ be
     done to closed indices. #283 (ferki)

**Bug fixes**

   * Don't accidentally delete ".kibana" index. #261 (malagoli)

   * Fix segment count for empty indices. #265 (untergeek)

   * Change bloom filter cutoff Elasticsearch version to 1.4.
     Reported in #267 (untergeek)


3.0.0rc1 (5 March 2015)
=======================

**Release Notes**

RC1 is here!  I'm re-releasing the Changes from all betas here, minus
the intra-beta code fixes.  Barring any show stoppers, the official
release will be soon.

**General**

   * **Breaking changes to the API.**  Because this is a major point
     revision, changes to the API have been made which are non-reverse
     compatible.  Before upgrading, be sure to update your scripts and
     test them thoroughly.

   * **Python 3 support** Somewhere along the line, Curator would no
     longer work with curator.  All tests now pass for both Python2
     and Python3, with 99% code coverage in both environments.

   * **New CLI library.** Using Click now. http://click.pocoo.org/3/
     This change is especially important as it allows very easy CLI
     integration testing.

   * **Pipelined filtering!** You can now use "--older-than" & "--
     newer-than" in the same command!  You can also provide your own
     regex via the "--regex" parameter.  You can use multiple
     instances of the "--exclude" flag.

   * **Manually include indices!** With the "--index" paramter, you
     can add an index to the working list.  You can provide multiple
     instances of the "--index" parameter as well!

   * **Tests!** So many tests now.  Test coverage of the API methods
     is at 100% now, and at 99% for the CLI methods.  This doesn't
     mean that all of the tests are perfect, or that I haven't missed
     some scenarios.  It does mean, however, that it will be much
     easier to write tests if something turns up missed.  It also
     means that any new functionality will now need to have tests.

   * Methods now only iterate through each index when appropriate!

   * Improved packaging!  Hopefully the "entry_point" issues some
     users have had will be addressed by this.  Methods have been
     moved into categories of "api" and "cli", and further broken out
     into individual modules to help them be easier to find and read.

   * Check for allocation before potentially re-applying an
     allocation rule. #273 (ferki)

   * Assigning replica count and routing allocation rules _can_ be
     done to closed indices. #283 (ferki)

**Bug fixes**

   * Don't accidentally delete ".kibana" index. #261 (malagoli)

   * Fix segment count for empty indices. #265 (untergeek)

   * Change bloom filter cutoff Elasticsearch version to 1.4.
     Reported in #267 (untergeek)


3.0.0b4 (5 March 2015)
======================

**Notes**

Integration testing!  Because I finally figured out how to use the
Click Testing API, I now have a good collection of command-line
simulations, complete with a real back-end.  This testing found a few
bugs (this is why testing exists, right?), and fixed a few of them.

**Bug fixes**

   * HUGE! *curator show snapshots* would _delete_ snapshots.  This
     is fixed.

   * Return values are now being sent from the commands.

   * *scripttest* is no longer necessary (click.Test works!)

   * Calling *get_snapshot* without a snapshot name returns all
     snapshots


3.0.0b3 (4 March 2015)
======================

**Bug fixes**

   * setup.py was lacking the new packages "curator.api" and
     "curator.cli"  The package works now.

   * Python3 suggested I had to normalize the beta tag to just b3,
     so that's also changed.

   * Cleaned out superfluous imports and logger references from the
     __init__.py files.


3.0.0-beta2 (3 March 2015)
==========================

**Bug fixes**

   * Python3 issues resolved.  Tests now pass on both Python2 and
     Python3


3.0.0-beta1 (3 March 2015)
==========================

**General**

   * **Breaking changes to the API.**  Because this is a major point
     revision, changes to the API have been made which are non-reverse
     compatible.  Before upgrading, be sure to update your scripts and
     test them thoroughly.

   * **New CLI library.** Using Click now. http://click.pocoo.org/3/

   * **Pipelined filtering!** You can now use "--older-than" & "--
     newer-than" in the same command!  You can also provide your own
     regex via the "--regex" parameter.  You can use multiple
     instances of the "--exclude" flag.

   * **Manually include indices!** With the "--index" paramter, you
     can add an index to the working list.  You can provide multiple
     instances of the "--index" parameter as well!

   * **Tests!** So many tests now.  Unit test coverage of the API
     methods is at 100% now.  This doesn't mean that all of the tests
     are perfect, or that I haven't missed some scenarios.  It does
     mean that any new functionality will need to also have tests,
     now.

   * Methods now only iterate through each index when appropriate!

   * Improved packaging!  Hopefully the "entry_point" issues some
     users have had will be addressed by this.  Methods have been
     moved into categories of "api" and "cli", and further broken out
     into individual modules to help them be easier to find and read.

   * Check for allocation before potentially re-applying an
     allocation rule. #273 (ferki)

**Bug fixes**

   * Don't accidentally delete ".kibana" index. #261 (malagoli)

   * Fix segment count for empty indices. #265 (untergeek)

   * Change bloom filter cutoff Elasticsearch version to 1.4.
     Reported in #267 (untergeek)


2.1.2 (22 January 2015)
=======================

**Bug fixes**

   * Do not try to set replica count if count matches provided
     argument. #247 (bobrik)

   * Fix JSON logging (Logstash format). #250 (magnusbaeck)

   * Fix bug in *filter_by_space()* which would match all indices if
     the provided patterns found no matches. Reported in #254
     (untergeek)


2.1.1 (30 December 2014)
========================

**Bug fixes**

   * Renamed unnecessarily redundant "--replicas" to "--count" in
     args for "curator_script.py"


2.1.0 (30 December 2014)
========================

**General**

   * Snapshot name now appears in log output or STDOUT. #178
     (untergeek)

   * Replicas! You can now change the replica count of indices.
     Requested in #175 (untergeek)

   * Delay option added to Bloom Filter functionality. #206
     (untergeek)

   * Add 2-digit years as acceptable pattern (y vs. Y). Reported in
     #209 (untergeek)

   * Add Docker container definition #226 (christianvozar)

   * Allow the use of 0 with --older-than, --most-recent and
     --delete- older-than. See #208. #211 (bobrik)

**Bug fixes**

   * Edge case where 1.4.0.Beta1-SNAPSHOT would break version check.
     Reported in #183 (untergeek)

   * Typo fixed. #193 (ferki)

   * Type fixed. #204 (gheppner)

   * Shows proper error in the event of concurrent snapshots. #177
     (untergeek)

   * Fixes erroneous index display of "_, a, l, l" when --all-
     indices selected. Reported in #222 (untergeek)

   * Use json.dumps() to escape exceptions. Reported in #210
     (untergeek)

   * Check if index is closed before adding to alias.  Reported in
     #214 (bt5e)

   * No longer force-install argparse if pre-installed #216
     (whyscream)

   * Bloom filters have been removed from Elasticsearch 1.5.0.
     Update methods and tests to act accordingly. #233 (untergeek)


2.0.2 (8 October 2014)
======================

**Bug fixes**

   * Snapshot name not displayed in log or STDOUT #185 (untergeek)

   * Variable name collision in delete_snapshot() #186 (untergeek)


2.0.1 (1 October 2014)
======================

**Bug fix**

   * Override default timeout when snapshotting --all-indices #179
     (untergeek)


2.0.0 (25 September 2014)
=========================

**General**

   * New! Separation of Elasticsearch Curator Python API and
     curator_script.py (untergeek)

   * New! "--delay" after optimize to allow cluster to quiesce #131
     (untergeek)

   * New! "--suffix" option in addition to "--prefix" #136
     (untergeek)

   * New! Support for wildcards in prefix & suffix #136 (untergeek)

   * Complete refactor of snapshots.  Now supporting incrementals!
     (untergeek)

**Bug fix**

   * Incorrect error msg if no indices sent to create_snapshot
     (untergeek)

   * Correct for API change coming in ES 1.4 #168 (untergeek)

   * Missing """ in Logstash log format #143 (cassianoleal)

   * Change non-master node test to exit code 0, log as "INFO". #145
     (untergeek)

   * *months* option missing from validate_timestring() (untergeek)


1.2.2 (29 July 2014)
====================

**Bug fix**

   * Updated "README.md" to briefly explain what curator does #117
     (untergeek)

   * Fixed "es_repo_mgr" logging whitelist #119 (untergeek)

   * Fixed absent "months" time-unit #120 (untergeek)

   * Filter out ".marvel-kibana" when prefix is ".marvel-" #120
     (untergeek)

   * Clean up arg parsing code where redundancy exists #123
     (untergeek)

   * Properly divide debug from non-debug logging #125 (untergeek)

   * Fixed "show" command bug caused by changes to command structure
     #126 (michaelweiser)


1.2.1 (24 July 2014)
====================

**Bug fix**

   * Fixed the new logging when called by "curator" entrypoint.


1.2.0 (24 July 2014)
====================

**General**

   * New! Allow user-specified date patterns: "--timestring" #111
     (untergeek)

   * New! Curate weekly indices (must use week of year) #111
     (untergeek)

   * New! Log output in logstash format "--logformat logstash" #111
     (untergeek)

   * Updated! Cleaner default logs (debug still shows everything)
     (untergeek)

   * Improved! Dry runs are more visible in log output (untergeek)

Errata

   * The "--separator" option was removed in lieu of user-specified
     date patterns.

   * Default "--timestring" for days: "%Y.%m.%d" (Same as before)

   * Default "--timestring" for hours: "%Y.%m.%d.%H" (Same as
     before)

   * Default "--timestring" for weeks: "%Y.%W"


1.1.3 (18 July 2014)
====================

**Bug fix**

   * Prefix not passed in "get_object_list()" #106 (untergeek)

   * Use "os.devnull" instead of "/dev/null" for Windows #102
     (untergeek)

   * The http auth feature was erroneously omitted #100 (bbuchacher)


1.1.2 (13 June 2014)
====================

**Bug fix**

   * This was a showstopper bug for anyone using RHEL/CentOS with a
     Python 2.6 dependency for yum

   * Python 2.6 does not like format calls without an index. #96 via
     #95 (untergeek)

   * We won't talk about what happened to 1.1.1.  No really.  I hate
     git today :(


1.1.0 (12 June 2014)
====================

**General**

   * Updated! New command structure

   * New! Snapshot to fs or s3 #82 (untergeek)

   * New! Add/Remove indices to alias #82 via #86 (cschellenger)

   * New! "--exclude-pattern" #80 (ekamil)

   * New! (sort of) Restored "--log-level" support #73 (xavier-
     calland)

   * New! show command-line options #82 via #68 (untergeek)

   * New! Shard Allocation Routing #82 via #62 (nickethier)

**Bug fix**

   * Fix "--max_num_segments" not being passed correctly #74
     (untergeek)

   * Change "BUILD_NUMBER" to "CURATOR_BUILD_NUMBER" in "setup.py"
     #60 (mohabusama)

   * Fix off-by-one error in time calculations #66 (untergeek)

   * Fix testing with python3 #92 (untergeek)

Errata

   * Removed "optparse" compatibility.  Now requires "argparse".


1.0.0 (25 Mar 2014)
===================

**General**

   * compatible with "elasticsearch-py" 1.0 and Elasticsearch 1.0
     (honzakral)

   * Lots of tests! (honzakral)

   * Streamline code for 1.0 ES versions (honzakral)

**Bug fix**

   * Fix "find_expired_indices()" to not skip closed indices
     (honzakral)


0.6.2 (18 Feb 2014)
===================

**General**

   * Documentation fixes #38 (dharrigan)

   * Add support for HTTPS URI scheme and "optparse" compatibility
     for Python 2.6 (gelim)

   * Add elasticsearch module version checking for future
     compatibility checks (untergeek)


0.6.1 (08 Feb 2014)
===================

**General**

   * Added tarball versioning to "setup.py" (untergeek)

**Bug fix**

   * Fix "long_description" by including "README.md" in
     "MANIFEST.in" (untergeek)

   * Incorrect version number in "curator.py" (untergeek)


0.6.0 (08 Feb 2014)
===================

**General**

   * Restructured repository to a be a proper python package.
     (arieb)

   * Added "setup.py" file. (arieb)

   * Removed the deprecated file "logstash_index_cleaner.py" (arieb)

   * Updated "README.md" to fit the new package, most importantly
     the usage and installation. (arieb)

   * Fixes and package push to PyPI (untergeek)


0.5.2 (26 Jan 2014)
===================

**General**

   * Fix boolean logic determining hours or days for time selection
     (untergeek)


0.5.1 (20 Jan 2014)
===================

**General**

   * Fix "can_bloom" to compare numbers (HonzaKral)

   * Switched "find_expired_indices()" to use "datetime" and
     "timedelta"

   * Do not try and catch unrecoverable exceptions. (HonzaKral)

   * Future proofing the use of the elasticsearch client (i.e. work
     with version 1.0+ of Elasticsearch) (HonzaKral) Needs more
     testing, but should work.

   * Add tests for these scenarios (HonzaKral)


0.5.0 (17 Jan 2014)
===================

**General**

   * Deprecated "logstash_index_cleaner.py" Use new "curator.py"
     instead (untergeek)

   * new script change: "curator.py" (untergeek)

   * new add index optimization (Lucene forceMerge) to reduce
     segments and therefore memory usage. (untergeek)

   * update refactor of args and several functions to streamline
     operation and make it more readable (untergeek)

   * update refactor further to clean up and allow immediate (and
     future) portability (HonzaKral)


0.4.0
=====

**General**

   * First version logged in "CHANGELOG"

   * new "--disable-bloom-days" feature requires 0.90.9+

     http://www.elasticsearch.org/guide/en/elasticsearch/reference/cu
     rrent/index-modules-codec.html#bloom-postings

     This can save a lot of heap space on cold indexes (i.e. not
     actively indexing documents)
