Docker 基础8

[root@h103 ~]# systemctl list-unit-files| grep docker
docker.service                              disabled
docker.socket                               disabled
[root@h103 ~]# systemctl enable docker.service
Created symlink from /etc/systemd/system/multi-user.target.wants/docker.service to /usr/lib/systemd/system/docker.service.
[root@h103 ~]# systemctl list-unit-files | grep docker
docker.service                              enabled 
docker.socket                               disabled
[root@h103 ~]# 

[root@h103 ~]# systemctl list-dependencies docker.service
docker.service
● ├─docker.socket
● ├─system.slice
● └─basic.target
●   ├─firewalld.service
●   ├─microcode.service
●   ├─rhel-autorelabel-mark.service
●   ├─rhel-autorelabel.service
●   ├─rhel-configure.service
●   ├─rhel-dmesg.service
●   ├─rhel-loadmodules.service
●   ├─paths.target
●   ├─slices.target
●   │ ├─-.slice
●   │ └─system.slice
●   ├─sockets.target
●   │ ├─dbus.socket
●   │ ├─dm-event.socket
●   │ ├─iscsid.socket
●   │ ├─iscsiuio.socket
●   │ ├─rpcbind.socket
●   │ ├─systemd-initctl.socket
●   │ ├─systemd-journald.socket
●   │ ├─systemd-shutdownd.socket
●   │ ├─systemd-udevd-control.socket
●   │ └─systemd-udevd-kernel.socket
[root@h103 ~]# 
[root@h103 ~]# cat /usr/lib/systemd/system/docker.service
[Unit]
Description=Docker Application Container Engine
Documentation=https://docs.docker.com
After=network.target docker.socket
Requires=docker.socket

[Service]
Type=notify
ExecStart=/usr/bin/docker daemon -H fd://
MountFlags=slave
LimitNOFILE=1048576
LimitNPROC=1048576
LimitCORE=infinity

[Install]
WantedBy=multi-user.target
[root@h103 ~]# cat /usr/lib/systemd/system/docker.socket
[Unit]
Description=Docker Socket for the API
PartOf=docker.service

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

[Install]
WantedBy=sockets.target
[root@h103 ~]# ll /var/run/docker.sock
srw-rw---- 1 root docker 0 Jan 20 11:21 /var/run/docker.sock
[root@h103 ~]#