IMPORTANT: No additional bug fixes or documentation updates will be released for this version. For the latest information, see the current release documentation.
Your data is important to you. Keeping it safe and available is important to Elasticsearch. Sometimes your cluster may experience hardware failure or a power loss. To help you plan for this, Elasticsearch offers a number of features to achieve high availability despite failures.
- With proper planning, a cluster can be designed for resilience to many of the things that commonly go wrong, from the loss of a single node or network connection right up to a zone-wide outage such as power loss.
- You can use cross-cluster replication to replicate data to a remote follower cluster which may be in a different data centre or even on a different continent from the leader cluster. The follower cluster acts as a hot standby, ready for you to fail over in the event of a disaster so severe that the leader cluster fails. The follower cluster can also act as a geo-replica to serve searches from nearby clients.
- The last line of defence against data loss is to take regular snapshots of your cluster so that you can restore a completely fresh copy of it elsewhere if needed.
Intro to Kibana
ELK for Logs & Metrics