CODEWITHSUNDEEP
node.jskubernetesistioapplication-restartservicemesh
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Reputation: 4995

Kubernetes/Istio - Restart a service on error

I have an application deployed in Kubernetes. I am using the Istio service mesh. One of my services needs to be restarted when a particular error occurs. Is this something that can be achieved using Istio?

I don't want to use a cronjob. Also, making the application restart itself seems like an anti-pattern.

The application is a node js app with fastify.

Upvotes: 0

Views: 1155

Answers (1)

Mikołaj Głodziak
Mikołaj Głodziak

Reputation: 5277

Istio is a network connection tool. I was creating this answer when David Maze made a very correct mention in a comment:

Istio is totally unrelated to this. Another approach could be to use a Kubernetes liveness probe if the cluster can detect the pod is unreachable; but if you're going to add a liveness hook to your code, the Kubernetes documentation also endorses just crashing on unrecoverable failure.

The kubelet uses liveness probes to know when to restart a container. For example, liveness probes could catch a deadlock, where an application is running, but unable to make progress. Restarting a container in such a state can help to make the application more available despite bugs.

See also:

Upvotes: 1

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