这是OpenShift Container Platform的 4.3

考虑这个Dockerfile

FROM eclipse-mosquitto

# Create folders
USER root

RUN mkdir -p /mosquitto/data /mosquitto/log

# mosquitto configuration
USER mosquitto

# This is crucial to me
COPY --chown=mosquitto:mosquitto ri45.conf /mosquitto/config/mosquitto.conf

EXPOSE 1883

而且,这是我的Deployment YAML。

apiVersion: apps/v1
kind: Deployment
metadata:
  name: mosquitto-broker
spec:
  selector:
    matchLabels:
      app: mosquitto-broker
  template:
    metadata:
      labels:
        app: mosquitto-broker
    spec:
      containers:
        - name: mosquitto-broker
          image: org/repo/eclipse-mosquitto:1.0.1
          imagePullPolicy: Always
          resources:
            limits:
              memory: "128Mi"
              cpu: "500m"
          volumeMounts:
            - name: mosquitto-data
              mountPath: /mosquitto/data
            - name: mosquitto-log
              mountPath: /mosquitto/log
          ports:
            - name: mqtt
              containerPort: 1883
      volumes:
        - name: mosquitto-log
          persistentVolumeClaim:
            claimName: mosquitto-log
        - name: mosquitto-data
          persistentVolumeClaim:
            claimName: mosquitto-data

当我使用上述YAML进行oc create -f时,出现此错误,2020-06-02T07:59:59: Error: Unable to open log file /mosquitto/log/mosquitto.log for writing.也许是权限错误;无法分辨。无论如何,通过 eclipse/mosquitto Dockerfile ,我看到mosquitto是UID和GID为1883的用户。因此,我按照here所述添加了securityContext

securityContext:
  fsGroup: 1883

当我使用此修改执行oc create -f时,出现此错误-securityContext.securityContext.runAsUser: Invalid value: 1883: must be in the ranges: [1002120000, 1002129999]

approach of adding an initContainer 设置音量许可对我不起作用,因为我必须是root才能做到这一点。

那么,如何使Eclipse mosquitto容器成功写入/mosquitto/log

最佳答案

这里有很多事情要解决。

首先,您应该确保确实要将配置文件烘烤到容器镜像中。通常,配置文件通过ConfigMapsSecrets添加为configuration in cloud-native applications should typically come from the environment(在您的情况下为OpenShift)。

其次,似乎您正在登录PersistentVolume,这也是一个糟糕的做法,因为best practice将登录到stdout。当然,在持久卷上具有应用程序数据(事务日志)很有意义。

至于您的原始问题(鉴于以上两点,该问题不再重要),可以使用SecurityContextContraints(SCC)解决该问题:Managing Security Context Constraints

因此,要解决您的问题,您应该使用/创建正确设置了runAsUser的SCC。

关于docker - 如何获得[1002120000,1002129999]范围内的UID:GID以使其在OpenShift中运行?,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/62144018/

10-11 02:53