Fluentd 在 Kubernetes 下收集日志不可读等问题

2022年11月9日 1190点热度 0人点赞 0条评论
内容纲要

Fluentd 在 Kubernetes 下部署时,需要使用 fluentd-daemonset-elasticsearch-rbac.yaml 文件,里面配置了 RABC 权限等,但是启动起来后,查看 Fluentd 日志,发现 unread ,原因是日志位置的问题。

原版日志收集配置:

        volumeMounts:
        - name: varlog
          mountPath: /var/log
        # When actual pod logs in /var/lib/docker/containers, the following lines should be used.
        # - name: dockercontainerlogdirectory
        #   mountPath: /var/lib/docker/containers
        #   readOnly: true
        # When actual pod logs in /var/log/pods, the following lines should be used.
        - name: dockercontainerlogdirectory
          mountPath: /var/log/pods
          readOnly: true
      terminationGracePeriodSeconds: 30
      volumes:
      - name: varlog
        hostPath:
          path: /var/log
      # When actual pod logs in /var/lib/docker/containers, the following lines should be used.
      # - name: dockercontainerlogdirectory
      #   hostPath:
      #     path: /var/lib/docker/containers
      # When actual pod logs in /var/log/pods, the following lines should be used.
      - name: dockercontainerlogdirectory
        hostPath:
          path: /var/log/pods

其中,/var/log 部分是不可变化的,有问题的是 dockercontainerlogdirectory 部分。

需要改成:

        volumeMounts:
        - name: varlog
          mountPath: /var/log
        # When actual pod logs in /var/lib/docker/containers, the following lines should be used.
        - name: dockercontainerlogdirectory
          mountPath: /var/lib/docker/containers
          readOnly: true
        # When actual pod logs in /var/log/pods, the following lines should be used.
        # - name: dockercontainerlogdirectory
        #   mountPath: /var/log/pods
        #   readOnly: true
      terminationGracePeriodSeconds: 30
      volumes:
      - name: varlog
        hostPath:
          path: /var/log
      # When actual pod logs in /var/lib/docker/containers, the following lines should be used.
      - name: dockercontainerlogdirectory
        hostPath:
          path: /var/lib/docker/containers
      # When actual pod logs in /var/log/pods, the following lines should be used.
      # - name: dockercontainerlogdirectory
      #   hostPath:
      #     path: /var/log/pods

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