How to mount container standard output logs - Elastic Container Instance

This topic describes how to mount stdlog to access a container's standard output logs as files within an ECI Pod. The logs are mounted with root permissions.

Configuration example

You can use the CSI plug-in to mount a container's standard output logs into an ECI Pod with root permissions.

Create a YAML configuration file.

vim stdlog_demo.yaml

apiVersion: v1
kind: Pod
metadata:
  name: test-stdlog-demo
spec:
  containers:
  - image: registry-vpc.cn-beijing.aliyuncs.com/eci_open/nginx:1.14.2
    name: test-container
    volumeMounts:
    - mountPath: /cache-test
      name: cache-volume
  volumes:
  - name: cache-volume
    csi:
      driver: stdlogplugin.csi.alibabacloud.com

Deploy the Pod.
```
kubectl create -f stdlog_demo.yaml
```

Verify the result.

The output shows that the container's standard output logs are mounted to the /cache-test directory with root permissions. You can now access these logs from within the container.

kubectl get pod test-stdlog-demo
kubectl exec -it test-stdlog-demo bash
ls -l /cache-test
ls -l /cache-test/test-container

shell@Alicloud:~$ kubectl get pod test-stdlog-demo
NAME               READY   STATUS    RESTARTS   AGE
test-stdlog-demo   1/1     Running   0          76s
shell@Alicloud:~$ kubectl exec -it test-stdlog-demo bash
kubectl exec [POD] [COMMAND] is DEPRECATED and will be removed in
root@test-stdlog-demo:/# ls -l /cache-test
total 4
drwxr-xr-x 2 root root 4096 Jul  6 09:04 test-container
root@test-stdlog-demo:/# ls -l /cache-test/test-container
total 0
-rw-r-----  1 root root  0 Jul  6 09:04 0.log
root@test-stdlog-demo:/#