'Kubernetes default liveness and readiness probe
I wanted to know what kubernetes does to check liveness and readiness of a pod and container by default.
I could find the document which mentions how I can add my custom probe and change the probe parameters like initial delay etc. However, could not find the default probe method used by k8s.
Solution 1:[1]
TL/DR: there is no default readiness probe ("should I send this pod traffic?") and the default liveness probe ("should I kill this pod?") is just whether the container is still running.
Solution 2:[2]
Kubernetes will not do anything on its own. You will have to decide what liveness and readiness mean to you. There are multiple things you can do, for example, an HTTP get request, issue a command, or connect on a port. It is up to you to decide how you want to make sure your users are happy and everything is running correctly.
Sources
This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.
Source: Stack Overflow
| Solution | Source |
|---|---|
| Solution 1 | user3798276 |
| Solution 2 | Ivan Aracki |