elasticsearch-cluster-restart

Rolling restart script for elasticsearch 2.x

Authors:

Ashton Davis (contact@adavis.me)

Credits:

This script is a significant expansion upon / rewrite of https://github.com/adamenger/rolypoly

Purpose:

Gracefully restart an elasticsearch cluster.

Configuration

For lack of a better solution, this script requires the user to define their environment.

You'll find this section in the top of the script.

Example:

# EXAMPLE CLUSTER
cluster1 = {
  'name' => 'Production Cluster',
  'master' => [
    'es-master-01.yourcompany.com',
    'es-master-02.yourcompany.com',
    'es-master-03.yourcompany.com'
  ],
  'data' => [
    'es-data-01.yourcomany.com',
    'es-data-02.yourcomany.com',
    'es-data-03.yourcomany.com',
    'es-data-04.yourcomany.com',
    'es-data-05.yourcomany.com'
  ],
  'client' => [
    'es-client-01.yourcompany.com'
  ]
}

list_of_clusters = [ cluster1 ]

cluster1 is a hash object, with name, master, data, and client arrays. name is required, as is data.

list_of_clusters is an array of the cluster object names (i.e. cluster1, cluster2, etc).

This script isn't really necessary for rolling only master / client nodes, as it does balancing that client / master nodes don't need. The script assumes you're rolling data nodes.

Usage:

Execution

/path/to/ruby es_rolling_restart.rb

The script is interactive. I plan to add a non-interactive mode someday.

Authentication

This script will use your username and your default ssh settings. By default it will use your private key. I don't recommend doing this with passwords.

License:

Apache License v2.0 -- http://www.apache.org/licenses/LICENSE-2.0

This script is provided as-is, with no implicit or explicit warranty. Use at your own discretion.

Requirements:

OS:

• *nix (requires native ssh client)

RUBY:

• 2.x

GEMS:

• elasticsearch
• elasticsearch-api
• elasticsearch-transport
• httparty
• colorize

Notes on development:

I mean to add username and private key options - just haven't gotten there yet.

Contribution:

Issues are welcome, PRs are highly encouraged. Contribute away!