Kubernetes 101 : Pods lifecycle hooks - PreStop -
A SIGTERM is a signal that kubernetes uses to gently shutdown a Pod.
The preStop hook is called before the pod is stopped.
We have two types of hooks:
- Exec - is used to run a command or a script inside a container.
- HTTP - is used to send HTTP request inside a container.
Below is an example of a pod with an HTTP preStop hook. It sends an HTTP request to the "end" API endpoint of the pod.
We get details of our pod using the below command:
The httpGet packet is sent to the address "http://172.17.0.4:80/end".
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