RabbitMQ 无法从 Kubernetes 上的持久性存储启动权限被拒绝错误

问题描述

我有一个 rabbit mq pod，我配置为使用持久性存储，以防通过挂载卷来重新启动/删除 pod。

我配置了所有内容但无法解决此错误：

/usr/lib/rabbitmq/bin/rabbitmq-server: 42: 
/usr/lib/rabbitmq/bin/rabbitmq-server: 
cannot create /var/lib/rabbitmq/mnesia/[e-mail]: 
Permission denied

这是我的 kubernetes 配置文件和部署应用

1. Dockerfile

FROM ubuntu:16.04
# hadolint ignore=DL3009
RUN apt-get update
# hadolint ignore=DL3008
RUN apt-get -y install --no-install-recommends rabbitmq-server
RUN apt-get -y autoremove && apt-get -y clean
# hadolint ignore=DL3001
RUN service rabbitmq-server start
copY start.sh /start.sh
RUN chmod 755 ./start.sh
EXPOSE 5672
EXPOSE 15672
CMD ["/start.sh","test","1234"]

2. start.sh

#!/bin/sh
cat > /etc/rabbitmq/rabbitmq.conf <<EOF
listeners.tcp.default = 5672

default_user = <<"$1">>
default_pass = <<"$2">>
EOF
rabbitmq-server

3. rabbitmq.yaml

---
apiVersion: v1
kind: Service
Metadata:
  name: message-broker
  namespace: {{ .Release.Namespace }}
spec:
  ports:
   - port: 5672
     targetPort: 5672
     name: "tcp"
     protocol: TCP
   - port: 15672
     targetPort: 15672
     name: "management"
     protocol: TCP
  selector:
    app: message-broker
---
apiVersion: apps/v1
kind: Deployment
Metadata:
  name: message-broker
  namespace: {{ .Release.Namespace }}
spec:
  replicas: 1
  selector:
    matchLabels:
      app: message-broker
  template:
    Metadata:
      labels:
        app: message-broker
    spec:
      containers:
      - name: message-broker
        image: {{ .Values.message_broker.image }}
        imagePullPolicy: {{ .Values.components.message_broker.imagePullPolicy }}
        ports:
        - containerPort: 5672
          name: tcp
        - containerPort: 15672
          name: management
        volumeMounts:
        - name: data
          mountPath: /var/lib/rabbitmq/mnesia
        env:
        - name: RABBITMQ_DEFAULT_PASS
          valueFrom:
            secretKeyRef:
              name: rabbitmq-secrets
              key: password # password = root
        - name: RABBITMQ_DEFAULT_USER
          valueFrom:
            secretKeyRef:
              name: rabbitmq-secrets
              key: user # user = root
      ...
      nodeselector:
      ....
      volumes:
      - name: data
        hostPath:
          path: /var/test/rabbitmq

让我知道我可能遗漏了什么。 :)

解决方法

您在 /var/lib/rabbitmq/mnesia 中安装的卷归 root 所有。

rabbitmq 进程以 rabbitmq 用户身份运行，并且没有对该目录的写访问权限。

在您的 start.sh 中添加：

chown rabbitmq:rabbitmq /var/lib/rabbitmq/mnesia

在启动 rabbitmq-server 进程之前。

,

错误说'无法创建/var/lib/rabbitmq/mnesia/[email protected]： 没有权限'。尝试为 /var/lib/rabbitmq/mnesia/ 目录提供写权限。