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Deployment Rollback

Symptoms​

  • Health checks failing after deployment
  • Errors in application logs
  • User reports of issues

Steps​

  1. Identify the previous working image tag

    aws ecr describe-images --repository-name statux-api \
      --query 'sort_by(imageDetails,&imagePushedAt)[-5:].imageTags'

  2. Update ASG launch template to previous tag

    • Or manually start instance refresh with previous image

  3. Monitor health checks

    watch -n 5 'aws elbv2 describe-target-health --target-group-arn <arn>'

  4. Investigate root cause after service is restored