hadoop►elasticsearch►elasticsearch full cluster restart upgrade

elasticsearch full cluster restart upgrade

Full cluster restart upgrade

  1. Disable shard allocation

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    curl -XPUT 'localhost:9200/_cluster/settings?pretty' -d'
    {
      "persistent": {
        "cluster.routing.allocation.enable": "none"
      }
    }'

  2. Perform a synced flush

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    curl -XPOST 'localhost:9200/_flush/synced?pretty'

  3. Shutdown and upgrade all nodes

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    Stop all Elasticsearch services on all nodes in the cluster

  4. Upgrade any plugins

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    Elasticsearch plugins must be upgraded when upgrading a node.
    Use the elasticsearch-plugin script to install the correct version of any plugins that you need.

  5. Start the cluster

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    If you have dedicated master nodes — nodes with node.master set to true(the default) and node.data set to false —  then it is a good idea to start them first.
    curl -XGET 'localhost:9200/_cat/health?pretty'
    curl -XGET 'localhost:9200/_cat/nodes?pretty'

  6. Wait for yellow

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    As soon as each node has joined the cluster, it will start to recover any primary shards that are stored locally.

  7. Reenable allocation

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    curl -XPUT 'localhost:9200/_cluster/settings?pretty' -d'
    {
      "persistent": {
        "cluster.routing.allocation.enable": "all"
      }
    }'

    curl -XGET 'localhost:9200/_cat/health?pretty'
    curl -XGET 'localhost:9200/_cat/recovery?pretty'