This repository contains a basic Elastic cluster configuration.
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2 masters
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2 slaves
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Kibana
You might need to do following configuration, if your container die after few seconds
$ sudo sysctl -w vm.max_map_count=262144
Deploy the cluster with docker-compose
$ docker-compose up -d
Config details
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cluster.name: define the name of the cluster so that every node join to the same cluster.
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node.name: define a name to every node.
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node.data: true if node to store data else false.
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node.master: true if node to behave as a master else false.
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node.ingest: true if node to set as pre-processing documents before indexing else false.
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node.max_local_storage_nodes: very useful for testing failover and different configurations on your development machine.
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transport.tcp.port: transport port is used for internal communication between nodes within the cluster.
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path.data: define the path to store the data.
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path.logs: define the path for the log entry.
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bootstrap.memory_lock: used to lock the process address space into RAM.
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network.host: enter the private IP i.e default is 0.0.0.0
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http.port: enter the port of your node i.e 9200.
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discovery.seed_hosts: enter all the ip address of the nodes.
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cluster.initial_master_nodes: define ((N/2)+1) number of nodes to be elected as master at the beginning to avoid split brain problem.
It is possible set up this configuration (even other options) with a elasticsearch.yml mounted on the containers
volumes:
- ./elasticsearch/config/elasticsearch.yml:/usr/share/elasticsearch/config/elasticsearch.yml
Check the status of your cluster with the following commands
$ curl "http://localhost:9200/_cat/nodes?v&pretty"
ip heap.percent ram.percent cpu load_1m load_5m load_15m node.role master name
172.31.0.3 32 91 62 7.50 3.65 1.84 ilmr - master1
172.31.0.5 50 91 62 7.50 3.65 1.84 dilrt - slave
172.31.0.4 65 91 62 7.50 3.65 1.84 ilmr * master2
172.31.0.2 36 91 62 7.50 3.65 1.84 dilrt - slave
$ curl http://localhost:9200/_cat/health
$ curl http://localhost:9200/_cluster/health?pretty
$ curl http://localhost:9200/_cluster/state?pretty
For Kibana
$ curl http://localhost:5601/api/status
At least, you can access Kibana on localhost:5601 and make some queries with the DevTools API
