1Search::Elasticsearch::UCsxenrPoCooln:t:rSinbiuftfe(d3S)PeearrlchD:o:cEulmaesnttiactsieoanrch::CxnPool::Sniff(3)
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NAME

6       Search::Elasticsearch::CxnPool::Sniff - A CxnPool for connecting to a
7       local cluster with a dynamic node list
8

VERSION

10       version 7.715
11

SYNOPSIS

13           $e = Search::Elasticsearch->new(
14               cxn_pool => 'Sniff',
15               nodes    => [
16                   'search1:9200',
17                   'search2:9200'
18               ],
19           );
20

DESCRIPTION

22       The Sniff connection pool should be used when you do have direct access
23       to the Elasticsearch cluster, eg when your web servers and
24       Elasticsearch servers are on the same network.  The nodes that you
25       specify are used to discover the cluster, which is then sniffed to find
26       the current list of live nodes that the cluster knows about.
27
28       This sniff process is repeated regularly, or whenever a node fails, to
29       update the list of healthy nodes.  So if you add more nodes to your
30       cluster, they will be auto-discovered during a sniff.
31
32       If all sniffed nodes fail, then it falls back to sniffing the original
33       seed nodes that you specified in "new()".
34
35       For HTTP Cxn classes, this module will also dynamically detect the
36       "max_content_length" which the nodes in the cluster will accept.
37
38       This class does Search::Elasticsearch::Role::CxnPool::Sniff and
39       Search::Elasticsearch::Role::Is_Sync.
40

CONFIGURATION

42   "nodes"
43       The list of nodes to use to discover the cluster.  Can accept a single
44       node, multiple nodes, and defaults to "localhost:9200" if no "nodes"
45       are specified. See "node" in Search::Elasticsearch::Role::Cxn for
46       details of the node specification.
47
48   See also
49       •   "request_timeout" in Search::Elasticsearch::Role::Cxn
50
51       •   "sniff_timeout" in Search::Elasticsearch::Role::Cxn
52
53       •   "sniff_request_timeout" in Search::Elasticsearch::Role::Cxn
54
55   Inherited configuration
56       From Search::Elasticsearch::Role::CxnPool::Sniff
57
58       •   sniff_interval
59
60       •   sniff_max_content_length
61
62       From Search::Elasticsearch::Role::CxnPool
63
64       •   randomize_cxns
65

METHODS

67   "next_cxn()"
68           $cxn = $cxn_pool->next_cxn
69
70       Returns the next available live node (in round robin fashion), or
71       throws a "NoNodes" error if no nodes can be sniffed from the cluster.
72
73   "schedule_check()"
74           $cxn_pool->schedule_check
75
76       Forces a sniff before the next Cxn is returned, to updated the list of
77       healthy nodes in the cluster.
78
79   "sniff()"
80           $bool = $cxn_pool->sniff
81
82       Sniffs the cluster and returns "true" if the sniff was successful.
83
84   Inherited methods
85       From Search::Elasticsearch::Role::CxnPool::Sniff
86
87       •   schedule_check()
88
89       •   parse_sniff()
90
91       •   should_accept_node()
92
93       From Search::Elasticsearch::Role::CxnPool
94
95       •   cxn_factory()
96
97       •   logger()
98
99       •   serializer()
100
101       •   current_cxn_num()
102
103       •   cxns()
104
105       •   seed_nodes()
106
107       •   next_cxn_num()
108
109       •   set_cxns()
110
111       •   request_ok()
112
113       •   request_failed()
114
115       •   should_retry()
116
117       •   should_mark_dead()
118
119       •   cxns_str()
120
121       •   cxns_seeds_str()
122
123       •   retries()
124
125       •   reset_retries()
126

AUTHOR

128       Enrico Zimuel <enrico.zimuel@elastic.co>
129

131       This software is Copyright (c) 2021 by Elasticsearch BV.
132
133       This is free software, licensed under:
134
135         The Apache License, Version 2.0, January 2004
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139perl v5.34.0                      2022-S0e1a-r2c1h::Elasticsearch::CxnPool::Sniff(3)
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