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.IX Title "Search::Elasticsearch::Client::5_0::Direct::Cluster 3pm"
.TH Search::Elasticsearch::Client::5_0::Direct::Cluster 3pm "2016-12-17" "perl v5.24.1" "User Contributed Perl Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
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.nh
.SH "NAME"
Search::Elasticsearch::Client::5_0::Direct::Cluster \- A client for running cluster\-level requests
.SH "VERSION"
.IX Header "VERSION"
version 5.01
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
This module provides methods to make cluster-level requests, such as
getting and setting cluster-level settings, manually rerouting shards,
and retrieving for monitoring purposes.
.PP
It does Search::Elasticsearch::Role::Client::Direct.
.SH "METHODS"
.IX Header "METHODS"
.ie n .SS """health()"""
.el .SS "\f(CWhealth()\fP"
.IX Subsection "health()"
.Vb 3
\&    $response = $e\->cluster\->health(
\&        index   => \*(Aqindex\*(Aq | \e@indices  # optional
\&    );
.Ve
.PP
The \f(CW\*(C`health()\*(C'\fR method is used to retrieve information about the cluster
health, returning \f(CW\*(C`red\*(C'\fR, \f(CW\*(C`yellow\*(C'\fR or \f(CW\*(C`green\*(C'\fR to indicate the state
of the cluster, indices or shards.
.PP
Query string parameters:
    \f(CW\*(C`level\*(C'\fR,
    \f(CW\*(C`local\*(C'\fR,
    \f(CW\*(C`master_timeout\*(C'\fR,
    \f(CW\*(C`timeout\*(C'\fR,
    \f(CW\*(C`wait_for_active_shards\*(C'\fR,
    \f(CW\*(C`wait_for_events\*(C'\fR,
    \f(CW\*(C`wait_for_no_relocating_shards\*(C'\fR,
    \f(CW\*(C`wait_for_nodes\*(C'\fR,
    \f(CW\*(C`wait_for_status\*(C'\fR
.PP
See the cluster health docs <http://www.elastic.co/guide/en/elasticsearch/reference/current/cluster-health.html>
for more information.
.ie n .SS """stats()"""
.el .SS "\f(CWstats()\fP"
.IX Subsection "stats()"
.Vb 3
\&    $response = $e\->cluster\->stats(
\&        node_id => \*(Aqnode\*(Aq | \e@nodes     # optional
\&    );
.Ve
.PP
Returns high-level cluster stats, optionally limited to the listed nodes.
.PP
Query string parameters:
    \f(CW\*(C`flat_settings\*(C'\fR,
    \f(CW\*(C`human\*(C'\fR,
    \f(CW\*(C`timeout\*(C'\fR
.PP
See the cluster stats docs <http://www.elastic.co/guide/en/elasticsearch/reference/current/cluster-stats.html>
for more information.
.ie n .SS """get_settings()"""
.el .SS "\f(CWget_settings()\fP"
.IX Subsection "get_settings()"
.Vb 1
\&    $response = $e\->cluster\->get_settings()
.Ve
.PP
The \f(CW\*(C`get_settings()\*(C'\fR method is used to retrieve cluster-wide settings that
have been set with the \*(L"\fIput_settings()\fR\*(R" method.
.PP
Query string parameters:
    \f(CW\*(C`flat_settings\*(C'\fR,
    \f(CW\*(C`include_defaults\*(C'\fR,
    \f(CW\*(C`master_timeout\*(C'\fR,
    \f(CW\*(C`timeout\*(C'\fR
.PP
See the cluster settings docs <http://www.elastic.co/guide/en/elasticsearch/reference/current/cluster-update-settings.html>
for more information.
.ie n .SS """put_settings()"""
.el .SS "\f(CWput_settings()\fP"
.IX Subsection "put_settings()"
.Vb 1
\&    $response = $e\->cluster\->put_settings( %settings );
.Ve
.PP
The \f(CW\*(C`put_settings()\*(C'\fR method is used to set cluster-wide settings, either
transiently (which don't survive restarts) or permanently (which do survive
restarts).
.PP
For instance:
.PP
.Vb 5
\&    $response = $e\->cluster\->put_settings(
\&        body => {
\&            transient => { "discovery.zen.minimum_master_nodes" => 5 }
\&        }
\&    );
.Ve
.PP
Query string parameters:
    \f(CW\*(C`flat_settings\*(C'\fR
.PP
See the cluster settings docs <http://www.elastic.co/guide/en/elasticsearch/reference/current/cluster-update-settings.html>
 for more information.
.ie n .SS """state()"""
.el .SS "\f(CWstate()\fP"
.IX Subsection "state()"
.Vb 4
\&    $response = $e\->cluster\->state(
\&        metric => $metric | \e@metrics   # optional
\&        index  => $index  | \e@indices   # optional
\&    );
.Ve
.PP
The \f(CW\*(C`state()\*(C'\fR method returns the current cluster state from the master node,
or from the responding node if \f(CW\*(C`local\*(C'\fR is set to \f(CW\*(C`true\*(C'\fR.
.PP
It returns all metrics by default, but these can be limited to any of:
    \f(CW\*(C`_all\*(C'\fR,
    \f(CW\*(C`blocks\*(C'\fR,
    \f(CW\*(C`metadata\*(C'\fR,
    \f(CW\*(C`nodes\*(C'\fR,
    \f(CW\*(C`routing_table\*(C'\fR
.PP
Metrics for indices can be limited to particular indices with the \f(CW\*(C`index\*(C'\fR
parameter.
.PP
Query string parameters:
    \f(CW\*(C`allow_no_indices\*(C'\fR,
    \f(CW\*(C`expand_wildcards\*(C'\fR,
    \f(CW\*(C`flat_settings\*(C'\fR,
    \f(CW\*(C`ignore_unavailable\*(C'\fR,
    \f(CW\*(C`local\*(C'\fR,
    \f(CW\*(C`master_timeout\*(C'\fR
.PP
See the cluster state docs <http://www.elastic.co/guide/en/elasticsearch/reference/current/cluster-state.html>
for more information.
.ie n .SS """allocation_explain()"""
.el .SS "\f(CWallocation_explain()\fP"
.IX Subsection "allocation_explain()"
.Vb 3
\&    $response = $e\->cluster\->allocation_explain(
\&        body => { ... shard selectors ...}  # optional
\&    );
.Ve
.PP
Returns information about why a shard is allocated or unallocated or why.
.PP
Query string parameters:
    \f(CW\*(C`include_disk_info\*(C'\fR,
    \f(CW\*(C`include_yes_decisions\*(C'\fR
.PP
See the cluster allocation explain docs <https://www.elastic.co/guide/en/elasticsearch/reference/current/cluster-allocation-explain.html>
for more information.
.ie n .SS """pending_tasks()"""
.el .SS "\f(CWpending_tasks()\fP"
.IX Subsection "pending_tasks()"
.Vb 1
\&    $response = $e\->cluster\->pending_tasks();
.Ve
.PP
Returns a list of cluster-level tasks still pending on the master node.
.PP
Query string parameters:
    \f(CW\*(C`local\*(C'\fR,
    \f(CW\*(C`master_timeout\*(C'\fR
.PP
See the pending tasks docs <http://www.elastic.co/guide/en/elasticsearch/reference/current/cluster-pending.html>
for more information.
.ie n .SS """reroute()"""
.el .SS "\f(CWreroute()\fP"
.IX Subsection "reroute()"
.Vb 3
\&    $e\->cluster\->reroute(
\&        body => { commands }
\&    );
.Ve
.PP
The \f(CW\*(C`reroute()\*(C'\fR method is used to manually reallocate shards from one
node to another.  The \f(CW\*(C`body\*(C'\fR should contain the \f(CW\*(C`commands\*(C'\fR indicating
which changes should be made. For instance:
.PP
.Vb 10
\&    $e\->cluster\->reroute(
\&        body => {
\&            commands => [
\&                { move => {
\&                    index     => \*(Aqtest\*(Aq,
\&                    shard     => 0,
\&                    from_node => \*(Aqnode_1\*(Aq,
\&                    to_node   => \*(Aqnode_2
\&                }},
\&                { allocate => {
\&                    index     => \*(Aqtest\*(Aq,
\&                    shard     => 1,
\&                    node      => \*(Aqnode_3\*(Aq
\&                }}
\&            ]
\&        }
\&    );
.Ve
.PP
Query string parameters:
    \f(CW\*(C`dry_run\*(C'\fR,
    \f(CW\*(C`explain\*(C'\fR,
    \f(CW\*(C`master_timeout\*(C'\fR,
    \f(CW\*(C`metric\*(C'\fR,
    \f(CW\*(C`retry_failed\*(C'\fR,
    \f(CW\*(C`timeout\*(C'\fR
.PP
See the reroute docs <http://www.elastic.co/guide/en/elasticsearch/reference/current/cluster-reroute.html>
for more information.
.SH "AUTHOR"
.IX Header "AUTHOR"
Clinton Gormley <drtech@cpan.org>
.SH "COPYRIGHT AND LICENSE"
.IX Header "COPYRIGHT AND LICENSE"
This software is Copyright (c) 2016 by Elasticsearch \s-1BV.\s0
.PP
This is free software, licensed under:
.PP
.Vb 1
\&  The Apache License, Version 2.0, January 2004
.Ve