What is the restart policy for Kubernetes pods?
In Kubernetes, the restart policy defines how a pod should be restarted when it fails. There are three main types: Always, OnFailure, and Never.
Can you explain the differences between these restart policies?
Sure! 'Always' means the pod will be restarted regardless of its exit status. 'OnFailure' restarts the pod only if it exits with a non-zero status, while 'Never' means it won't be restarted at all.
When should I use 'OnFailure' instead of 'Always'?
Use 'OnFailure' for jobs that should only retry on failure, like batch processing, to avoid unnecessary restarts for successful completions.
Are there any best practices for setting restart policies?
Yes, consider the nature of your application. For stateless apps, 'Always' is common, while for batch jobs, 'OnFailure' is often more appropriate.
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