Checklist of Disaster Recovery Plan in Kubernetes (EKS) for GitLab

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Disaster Recovery recommendation in Kubernetes

  1. Take regular backups: Regularly backup Kubernetes configuration and data to protect against data loss in case of a disaster. You can use tools like Velero or Kasten to backup Kubernetes clusters.
  2. Use multiple replicas: Deploy applications with multiple replicas to ensure that applications are available even if one or more replicas fail. This can be achieved by using tools like Kubernetes Deployment or StatefulSet.
  3. Replicate across multiple zones/regions: Deploy Kubernetes clusters across multiple availability zones or regions to minimize the risk of data loss in case of a disaster. You can use tools like Kubernetes Federation or multi-cluster management solutions like Rancher or Kubermatic to replicate clusters across different regions.
  4. Test Disaster Recovery plan: Test Disaster Recovery plan regularly to ensure that backup and recovery procedures are effective. You can use tools like Chaos Engineering to simulate failure scenarios and test Disaster Recovery plan.
  5. Use a centralized logging and monitoring system: Use a centralized logging and monitoring system like Prometheus, Grafana, or Elasticsearch to monitor the health of Kubernetes clusters and detect anomalies that may indicate a disaster.
  6. Document Disaster Recovery plan: Document Disaster Recovery plan and ensure that it is easily accessible to team. This will ensure that team is prepared in case of a disaster and can quickly recover Kubernetes clusters.

Design EKS cluster for disaster recovery?

Designing an Amazon Elastic Kubernetes Service (EKS) cluster for disaster recovery involves implementing strategies and configurations that ensure the availability and resilience of the cluster in case of a disaster or failure. Here are some steps to consider when designing an EKS cluster for disaster recovery:

  1. Use multiple availability zones: When creating an EKS cluster, We should launch worker nodes across multiple availability zones. This provides redundancy and helps ensure that the failure of a single availability zone does not result in a complete cluster outage.
  2. Implement automatic scaling: Configure EKS cluster to automatically scale in response to changes in workload demand. This ensures that your cluster can handle fluctuations in traffic and can automatically recover from failures without manual intervention.
  3. Use multiple clusters: Consider using multiple EKS clusters to ensure redundancy and minimize the impact of failures. We can create a primary cluster and a secondary cluster in a different region, which can take over in the event of a disaster.
  4. Implement data replication: Implement data replication to ensure that critical data is available in multiple locations. Use data replication solutions such as Amazon S3, Amazon RDS, or Amazon DynamoDB to replicate data across multiple availability zones.
  5. Back up your EKS cluster: Back up EKS cluster data regularly and store backups in a different region than the primary cluster. This ensures that we have access to critical data and can restore your cluster in the event of a disaster.
  6. Implement monitoring and alerting: Implement monitoring and alerting tools to monitor EKS cluster and alert you to any issues. Use tools such as Amazon CloudWatch and AWS CloudTrail to monitor and analyze cluster logs, metrics, and events.
  7. Test your disaster recovery plan: Test disaster recovery plan regularly to ensure that it works and to identify any gaps or weaknesses. Conduct simulated disaster recovery scenarios to test plan and ensure that your team is prepared to handle a disaster.
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