PowerProtect：Cyber Recovery Docker 容器無法啟動「無法連線至 Docker 精靈」

Summary: 客戶無法使用 Cyber Recovery，因為 docker 精靈未執行，導致 docker 容器無法啟動。

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Symptoms

嘗試執行 Docker PS 時，會出現訊息詢問 docker 精靈是否正在執行中。
  
[root@hostname ~]# docker ps -a
Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?


Docker 服務非作用中
  
[root@hostname ~]# systemctl status docker
? docker.service - Docker Application Container Engine
   Loaded: loaded (/usr/lib/systemd/system/docker.service; enabled; vendor preset: disabled)
   Active: failed (Result: start-limit) since Wed 2022-11-16 07:39:05 EST; 3min 34s ago
     Docs: https://docs.docker.com
 Main PID: 7590 (code=exited, status=1/FAILURE)

Nov 16 07:39:02 hostname systemd[1]: docker.service failed.
Nov 16 07:39:05 hostname systemd[1]: docker.service holdoff time over, scheduling restart.
Nov 16 07:39:05 hostname systemd[1]: Stopped Docker Application Container Engine.
Nov 16 07:39:05 hostname systemd[1]: start request repeated too quickly for docker.service
Nov 16 07:39:05 hostname systemd[1]: Failed to start Docker Application Container Engine.
Nov 16 07:39:05 hostname systemd[1]: Unit docker.service entered failed state.
Nov 16 07:39:05 hostname systemd[1]: docker.service failed.
Nov 16 07:39:40 hostname systemd[1]: start request repeated too quickly for docker.service
Nov 16 07:39:40 hostname systemd[1]: Failed to start Docker Application Container Engine.
Nov 16 07:39:40 hostname systemd[1]: docker.service failed.


Cause

嘗試啟動 docker 精靈時，會出現空間問題訊息警告
  
[root@ hostname]# sudo dockerd
Error starting daemon: Unable to get the TempDir under /var/lib/docker: mkdir /var/lib/docker/tmp: no space left on device

發生磁碟空間問題。根檔案系統似乎已滿：
  
[root@hostname ~]# df -kh
Filesystem                                Size  Used Avail Use% Mounted on
/dev/mapper/centos_hostname-root   38G   38G   20K 100% /        <<<<
devtmpfs                                  1.9G     0  1.9G   0% /dev
tmpfs                                     1.9G  8.0K  1.9G   1% /dev/shm
tmpfs                                     1.9G  8.9M  1.9G   1% /run
tmpfs                                     1.9G     0  1.9G   0% /sys/fs/cgroup
/dev/sda1                                1014M  189M  826M  19% /boot
/dev/mapper/centos_ehs--hostname-home   19G  3.0G   16G  17% /home
tmpfs                                     379M     0  379M   0% /run/user/0
[root@hostname ~]#



Resolution

移除一些不再需要的舊支援套裝和舊版套件以請領部分空間後，然後重新開機 Cyber Recovery 虛擬機器。 容器現在又開始執行，客戶可以繼續使用 Cyber Recovery。

Affected Products

Cyber Recovery Series

Products

Cyber Recovery Series, CyberSense
Article Properties
Article Number: 000214296
Article Type: Solution
Last Modified: 04 Nov 2025
Version:  2
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