从 redis 容器获取变量的访问权限

Question

我使用以下命令创建秘密 redis-secret。

kubectl create secret generic redis-secret --from-literal=password=0123456

之后，我创建 pod secrets-via-file，使用 redis 映像，挂载秘密名称 redis-secret 在 /secrets.

kubectl run secret-via-file --image=redis --dry-run=client -o yaml > pod.yaml

我编辑了创建 pod.yaml 文件。

apiVersion: v1
    kind: Pod
metadata:
  labels:
    run: secret-via-file
  name: secret-via-file
spec:
  containers:
  - image: redis
    name: secret-via-file
    volumeMounts:
    - name: redis-secret
      mountPath: /secrets
  volumes:
  - name: redis-secret
    secret:
      secretName: redis-secret

我创建了第二个 pod 名称 secret-via-env，使用 redis 图像，导出 password 作为密码.

kubectl run secret-via-env --image=redis --dry-run=client -o yaml > pod2.yaml

我编辑了 pod2.yaml 文件。

apiVersion: v1
kind: Pod
metadata:
  labels:
    run: secrets-via-env
  name: secrets-via-env
spec:
  containers:
  - image: redis
    name: secrets-via-env
    env:
      - name: PASSWORD
        valueFrom:
          secretKeyRef:
            name: redis-secret
            key: password

我使用以下命令连接到 pod secrets-via-env。

kubectl exec -it secret-via-file -- redis-cli

我尝试验证密钥是否已安装到 pods。在第二个 pod 中，我想使用变量 PASSWORD 来检索分配的值 (0123456)。我使用了下面的命令，但它不起作用。

SECRET GET PASSWORD

Answer 1

尝试如下。我看到密码密码在 pod

中被列为 env

# create secret
kubectl create secret generic redis-secret --from-literal=password=0123456

# create pod
apiVersion: v1
kind: Pod
metadata:
  labels:
    run: secrets-via-env
  name: secrets-via-env
spec:
  containers:
  - image: redis
    name: secrets-via-env
    env:
    - name: PASSWORD
      valueFrom:
        secretKeyRef:
          name: redis-secret
          key: password

# check PASSWORD secret
master $ kubectl exec -it secrets-via-env sh
kubectl exec [POD] [COMMAND] is DEPRECATED and will be removed in a future version. Use kubectl kubectl exec [POD] -- [COMMAND] instead.
# echo $PASSWORD
0123456

# from first pod
---
apiVersion: v1
kind: Pod
metadata:
  labels:
    run: secret-via-file
  name: secret-via-file
spec:
  containers:
  - image: redis
    name: secret-via-file
    volumeMounts:
    - name: redis-secret
      mountPath: /secrets
  volumes:
  - name: redis-secret
    secret:
      secretName: redis-secret

controlplane $ kubectl exec -it secret-via-file sh
kubectl exec [POD] [COMMAND] is DEPRECATED and will be removed in a future version. Use kubectl kubectl exec [POD] -- [COMMAND] instead.
# ls -l /secrets
total 0
lrwxrwxrwx 1 root root 15 Jul 22 09:45 password -> ..data/password
# cat /secrets/password
0123456#

从 redis 容器获取变量的访问权限

Get access to variables from the redis container

redis

kubernetes

kubernetes-pod