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Prerequisites for uni-directional disaster recovery

ECH ECK ECE Self-Managed

Before completing this tutorial, set up cross-cluster replication to connect two clusters and configure a follower index.

In this tutorial, kibana_sample_data_ecommerce is replicated from clusterA to clusterB.

				
					## On clusterB ###
				PUT _cluster/settings
					{
  "persistent": {
    "cluster": {
      "remote": {
        "clusterA": {
          "mode": "proxy",
          "skip_unavailable": "true",
          "server_name": "clustera.es.region-a.gcp.elastic-cloud.com",
          "proxy_socket_connections": "18",
          "proxy_address": "clustera.es.region-a.gcp.elastic-cloud.com:9400"
        }
      }
    }
  }
}
		
				
					## On clusterB ###
				PUT /kibana_sample_data_ecommerce2/_ccr/follow?wait_for_active_shards=1
					{
  "remote_cluster": "clusterA",
  "leader_index": "kibana_sample_data_ecommerce"
}
Important

Writes (such as ingestion or updates) should occur only on the leader index. Follower indices are read-only and will reject any writes.