NAME

Search::Elasticsearch::CxnPool::Static::NoPing - A CxnPool for connecting to a remote cluster without the ability to ping.

VERSION

version 6.80

SYNOPSIS

$e = Search::Elasticsearch->new(
    cxn_pool => 'Static::NoPing'
    nodes    => [
        'search1:9200',
        'search2:9200'
    ],
);

DESCRIPTION

The Static::NoPing connection pool (like the Static pool) should be used when your access to the cluster is limited. However, the Static pool needs to be able to ping nodes in the cluster, with a HEAD / request. If you can't ping your nodes, then you should use the Static::NoPing connection pool instead.

Because the cluster cannot be pinged, this CxnPool cannot use a short ping request to determine whether nodes are live or not - it just has to send requests to the nodes to determine whether they are alive or not.

Most of the time, a dead node will cause the request to fail quickly. However, in situations where node failure takes time (eg malfunctioning routers or firewalls), a failure may not be reported until the request itself times out (see "request_timeout" in Search::Elasticsearch::Cxn).

Failed nodes will be retried regularly to check if they have recovered.

This class does Search::Elasticsearch::Role::CxnPool::Static::NoPing and Search::Elasticsearch::Role::Is_Sync.

CONFIGURATION

nodes

The list of nodes to use to serve requests. Can accept a single node, multiple nodes, and defaults to localhost:9200 if no nodes are specified. See "node" in Search::Elasticsearch::Role::Cxn for details of the node specification.

See also

• "request_timeout" in Search::Elasticsearch::Role::Cxn

• "dead_timeout" in Search::Elasticsearch::Role::Cxn

• "max_dead_timeout" in Search::Elasticsearch::Role::Cxn

Inherited configuration

From Search::Elasticsearch::Role::CxnPool::Static::NoPing

• max_retries

From Search::Elasticsearch::Role::CxnPool

• randomize_cxns

METHODS

next_cxn()

$cxn = $cxn_pool->next_cxn

Returns the next available node in round robin fashion - either a live node which has previously responded successfully, or a previously failed node which should be retried. If all nodes are dead, it will throw a NoNodes error.

Inherited methods

From Search::Elasticsearch::Role::CxnPool::Static::NoPing

• should_mark_dead()

• schedule_check()

From Search::Elasticsearch::Role::CxnPool

• cxn_factory()

• logger()

• serializer()

• current_cxn_num()

• cxns()

• seed_nodes()

• next_cxn_num()

• set_cxns()

• request_ok()

• request_failed()

• should_retry()

• should_mark_dead()

• cxns_str()

• cxns_seeds_str()

• retries()

• reset_retries()

AUTHOR

Enrico Zimuel <enrico.zimuel@elastic.co>

COPYRIGHT AND LICENSE

This software is Copyright (c) 2020 by Elasticsearch BV.

This is free software, licensed under:

The Apache License, Version 2.0, January 2004

cpanm Search::Elasticsearch

perl -MCPAN -e shell
install Search::Elasticsearch