如何將 docker unix 服務名稱更改為docker-ce？

Question

我需要將 docker.service 重命名為 docker-ce.service。 我知道這有點不尋常。

原因是我目前使用 kubespray 來配置我的 kube.netes 集群，它為我安裝 containerd 作為運行時。 除此之外，僅針對某些特定機器，我還要求在這些機器上安裝 docker。 Kubespray 在安裝 containerd 時非常徹底，如果它發現服務存在，則會卸載 docker。 為了克服這個問題，重命名 docker 的服務將起作用並允許 kubespray 不卸載它，但事實證明這很麻煩。

更改服務本身很簡單，但是 docker.socket 不再啟動並出現以下錯誤：

[root@vm01234 system]# systemctl status docker.socket
● docker.socket - Docker Socket for the API
   Loaded: loaded (/usr/lib/systemd/system/docker.socket; enabled; vendor preset: disabled)
   Active: inactive (dead)
   Listen: /var/run/docker.sock (Stream)

Dec 09 16:47:04 vm01234 systemd[1]: docker.socket: Socket service docker.service not loaded, refusing.
Dec 09 16:47:04 vm01234 systemd[1]: Failed to listen on Docker Socket for the API.

查看了所有 Docker 文檔和其他線程，但找不到任何內容。 希望有人能夠提供幫助。

在 RHEL 8.6 上運行。

作為參考，這是我的服務和套接字文件：

docker.套接字

[Unit]
Description=Docker Socket for the API

[Socket]
ListenStream=/var/run/docker.sock
SocketMode=0660
SocketUser=root
SocketGroup=docker

[Install]
WantedBy=sockets.target

docker-ce.service

[Unit]
Description=Docker Application Container Engine
Documentation=https://docs.docker.com
After=network-online.target docker.socket firewalld.service containerd.service
Wants=network-online.target
Requires=docker.socket containerd.service

[Service]
Type=notify
# the default is not to use systemd for cgroups because the delegate issues still
# exists and systemd currently does not support the cgroup feature set required
# for containers run by docker
ExecStart=/usr/local/bin/dockerd -H fd:// --containerd=/run/containerd/containerd.sock
ExecReload=/bin/kill -s HUP $MAINPID
TimeoutSec=0
RestartSec=2
Restart=always

# Note that StartLimit* options were moved from "Service" to "Unit" in systemd 229.
# Both the old, and new location are accepted by systemd 229 and up, so using the old location
# to make them work for either version of systemd.
StartLimitBurst=3

# Note that StartLimitInterval was renamed to StartLimitIntervalSec in systemd 230.
# Both the old, and new name are accepted by systemd 230 and up, so using the old name to make
# this option work for either version of systemd.
StartLimitInterval=60s

# Having non-zero Limit*s causes performance problems due to accounting overhead
# in the kernel. We recommend using cgroups to do container-local accounting.
LimitNOFILE=infinity
LimitNPROC=infinity
LimitCORE=infinity

# Comment TasksMax if your systemd version does not support it.
# Only systemd 226 and above support this option.
TasksMax=infinity

# set delegate yes so that systemd does not reset the cgroups of docker containers
Delegate=yes

# kill only the docker process, not all processes in the cgroup
KillMode=process
OOMScoreAdjust=-500

[Install]
WantedBy=multi-user.target

Answer 1

能夠通過向 [socket] 塊添加服務值來解決問題。

[Unit]
Description=Docker Socket for the API

[Socket]
ListenStream=/var/run/docker.sock
SocketMode=0660
SocketUser=root
SocketGroup=docker
Service=docker-ce.service

[Install]
WantedBy=sockets.target