Kubernetes 数据存储 Secret
Kubernetes base64 About 1,244 words概念
和ConfigMap
非常类似,主要用于存储敏感信息,例如密码、秘钥、证书等。
特点
动态更新(定时更新),密文存储(describe
不能看到信息,但在Pod
容器中会还原成明文)
示例 yml
echo -n 'admin' | base64
echo -n '123456' | base64
输出:
[root@localhost ~]# echo -n 'admin' | base64
YWRtaW4=
[root@localhost ~]# echo -n '123456' | base64
MTIzNDU2
secret.yml
apiVersion: v1
kind: Secret
metadata:
name: secret
namespace: dev
type: Opaque
data:
username: YWRtaW4=
password: MTIzNDU2
创建pod-secret.yml
,挂载到Secret
apiVersion: v1
kind: Pod
metadata:
name: pod-secret
namespace: dev
spec:
containers:
- name: nginx
image: nginx:1.17.1
volumeMounts: # 将 Secret 挂载到目录
- name: config
mountPath: /secret/config
volumes:
- name: config
secret:
secretName: secret
查看 Secret
kubectl describe secret secret -n dev
输出:
[root@localhost ~]# kubectl describe secret secret -n dev
Name: secret
Namespace: dev
Labels: <none>
Annotations: <none>
Type: Opaque
Data
====
username: 5 bytes
password: 6 bytes
查看 Pod 中内容
进入容器
kubectl exec -it pod-secret -n dev -- /bin/sh
输出:可以看到Pod
中的内容是明文的。
[root@localhost ~]# kubectl exec -it pod-secret -n dev -- /bin/sh
# ls /secret/config/
password username
# more /secret/config/username
admin
# more /secret/config/password
123456
Views: 1,763 · Posted: 2022-03-23
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