I'm planning for a very high speed applications on kubernetes ,but I encountering performance issues of the kubernetes pod console logs.
When some pod writing console log, he writes it to a file(disk) under the hood and rotates it.
How can I config kubernetes writes the console logs to the RAM instead (rotating aswell ofcourse and shows me the last XX number of logs).
This is up to your underlying nodes. If you want to put the logs on a ramdisk, then do that :) Kubernetes knows very little about log management, it mostly just connects all the pieces.
You should check emptyDir and set
emptyDir:
medium: "Memory"and then do whatever you need with your logs, or go with hostPath and use /dev/shm.