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Diffstat (limited to 'docs/reference/modules/discovery.asciidoc')
| -rw-r--r-- | docs/reference/modules/discovery.asciidoc | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/docs/reference/modules/discovery.asciidoc b/docs/reference/modules/discovery.asciidoc new file mode 100644 index 0000000..292748d --- /dev/null +++ b/docs/reference/modules/discovery.asciidoc @@ -0,0 +1,30 @@ +[[modules-discovery]] +== Discovery + +The discovery module is responsible for discovering nodes within a +cluster, as well as electing a master node. + +Note, Elasticsearch is a peer to peer based system, nodes communicate +with one another directly if operations are delegated / broadcast. All +the main APIs (index, delete, search) do not communicate with the master +node. The responsibility of the master node is to maintain the global +cluster state, and act if nodes join or leave the cluster by reassigning +shards. Each time a cluster state is changed, the state is made known to +the other nodes in the cluster (the manner depends on the actual +discovery implementation). + +[float] +=== Settings + +The `cluster.name` allows to create separated clusters from one another. +The default value for the cluster name is `elasticsearch`, though it is +recommended to change this to reflect the logical group name of the +cluster running. + +include::discovery/azure.asciidoc[] + +include::discovery/ec2.asciidoc[] + +include::discovery/gce.asciidoc[] + +include::discovery/zen.asciidoc[] |