如何使用 Kube.netes logs 命令绑定容器的应用文件日志？

Question

I have developed a web microservice in Golang. I have used zap logger to log the application log in a file at location /var/log/myapp/myapp.log .

I want to see log information in file myapp.log through below command:

#kubectl logs mayappPod

But it is not working as by default STDOUT and STDERR output is redirected to kubectl logs command.

So my question is what exactly I am supposed to do to see the /var/log/myapp/myapp.log log through kubectl logs command.

Thanks, Rohit

Answer 1

kubectl logs command just show you logs from container(s) you specified. And container got logs from STDOUT and STDERR .

The recommended way is to setup your logging library to write logs to STDOUT . But as a workaround you can create symlink from /var/log/myapp/myapp.log to /dev/stdout in your docker container.

Another option is not use kubectl logs at all. You could copy this log file from your pod using kubectl cp <some-namespace>/<some-pod>:/tmp/foo /tmp/bar see