Cluster Secrets

default-secret

The type of default-secret is kubernetes.io/dockerconfigjson. The data is the credential for logging in to the SWR image repository and is used to pull images from SWR. To pull an image from SWR when creating a workload on CCE, set imagePullSecrets to default-secret.

apiVersion: v1                      
kind: Pod                          
metadata:
  name: nginx                      
spec:                            
  containers:
  - image: nginx:alpine            
    name: container-0               
    resources:                      
      limits:
        cpu: 100m
        memory: 200Mi
      requests:
        cpu: 100m
        memory: 200Mi
  imagePullSecrets:
  - name: default-secret

The data of default-secret is updated periodically, and the current data will expire after a certain period of time. You can run the describe command to view the expiration time in of default-secret.

Use default-secret directly instead of copying the secret content to create a new one. The credential in the copied secret will expire and the image cannot be pulled.

$ kubectl describe secret default-secret
Name:         default-secret
Namespace:    default
Labels:       secret-generated-by=cce
Annotations:  temporary-ak-sk-expires-at: 2021-11-26 20:55:31.380909 +0000 UTC

Type:  kubernetes.io/dockerconfigjson

Data
====
.dockerconfigjson:  347 bytes

paas.elb

The data of paas.elb is the temporary AK/SK data, which is used to create ELB load balancers during Service and ingress creation. The data of paas.elb is periodically updated and expires after a certain period of time.

In practice, you will not directly use paas.elb. However, do not delete it. Otherwise, ELB load balancers will fail to be created.

default-token-xxxxx

By default, Kubernetes creates a service account named default for each namespace. default-token-xxxxx is the key of the service account, and xxxxx is a random number.

$ kubectl get sa
NAME     SECRETS   AGE
default  1         30d
$ kubectl describe sa default
Name:                default
Namespace:           default
Labels:              <none>
Annotations:         <none>
Image pull secrets:  <none>
Mountable secrets:   default-token-xxxxx
Tokens:              default-token-xxxxx
Events:              <none>