Elasticsearch Mantanence Lessons Learned Today

Today I troubleshooted an Elasticsearch-cluster-down issue.

Several lessons were learned:

  1. When many elasticsearch cluster nodes are restarted, to avoid HEAP spike, better to temporarily stop all connection attempts;
  2. Avoid setting allow_primary=true when reroute shards via API;
  3. Don’t forget backup! It could save you some day!

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posted @ 2016-06-17 23:08 Teddy's Knowledge Base Views(...) Comments(...) Edit 收藏