Troubleshooting disaster recovery for OpenSearch

Common issues

Snapshot creation fails

• Verify object storage credentials
• Check bucket permissions
• Confirm network connectivity

Restore operation is slow

• Ensure adequate cluster resources
• Reduce index size where possible
• Restore selectively instead of full cluster

Replication lag

• Check network latency
• Monitor follower index status
• Ensure sufficient cluster capacity

Best practices

• Schedule frequent snapshots to reduce data loss
• Store backups in a different region
• Encrypt snapshot repositories
• Monitor backup and replication jobs
• Test recovery procedures regularly

Limitations

• Manual configuration required for DR
• Replication requires additional infrastructure
• Snapshot restore time depends on data size