Centos7安装docker后默认开启docker0的网卡|卸载默认网卡

                    

一： 停掉服务

systemctl stop docker

[root@www ~]# systemctl stop docker
[root@www ~]# systemctl status docker
● docker.service - Docker Application Container Engine
   Loaded: loaded (/usr/lib/systemd/system/docker.service; enabled; vendor preset: disabled)
   Active: inactive (dead) since 三 2023-08-16 15:12:05 CST; 5s ago
     Docs: http://docs.docker.com
  Process: 1208 ExecStart=/usr/bin/dockerd-current --graph /data/docker_data --add-runtime docker-runc=/usr/libexec/docker/docker-runc-current --default-runtime=docker-runc --exec-opt native.cgroupdriver=systemd --userland-proxy-path=/usr/libexec/docker/docker-proxy-current --init-path=/usr/libexec/docker/docker-init-current --seccomp-profile=/etc/docker/seccomp.json $OPTIONS $DOCKER_STORAGE_OPTIONS $DOCKER_NETWORK_OPTIONS $ADD_REGISTRY $BLOCK_REGISTRY $INSECURE_REGISTRY $REGISTRIES (code=exited, status=0/SUCCESS)
 Main PID: 1208 (code=exited, status=0/SUCCESS)

8月 16 14:29:48 www.yhchange.com dockerd-current[1208]: time="2023-08-16T14:29:48.315635031+08:00" level=info msg="Daemon has completed initialization"
8月 16 14:29:48 www.yhchange.com dockerd-current[1208]: time="2023-08-16T14:29:48.315710607+08:00" level=info msg="Docker daemon" commit="7d71120/1.13.1" graphdriver=overlay2 version=1.13.1
8月 16 14:29:48 www.yhchange.com dockerd-current[1208]: time="2023-08-16T14:29:48.349321307+08:00" level=info msg="API listen on /var/run/docker.sock"
8月 16 14:29:48 www.yhchange.com systemd[1]: Started Docker Application Container Engine.
8月 16 15:07:36 www.yhchange.com dockerd-current[1208]: time="2023-08-16T15:07:36.651328206+08:00" level=error msg="Handler for POST /v1.26/containers/89da1fb6dcb9/start returned error: No such container: 89da1fb6dcb9"
8月 16 15:12:04 www.yhchange.com systemd[1]: Stopping Docker Application Container Engine...
8月 16 15:12:04 www.yhchange.com dockerd-current[1208]: time="2023-08-16T15:12:04.294749387+08:00" level=info msg="Processing signal 'terminated'"
8月 16 15:12:04 www.yhchange.com dockerd-current[1208]: time="2023-08-16T15:12:04.373947579+08:00" level=info msg="stopping containerd after receiving terminated"
8月 16 15:12:04 www.yhchange.com dockerd-current[1208]: time="2023-08-16T15:12:04.374632569+08:00" level=fatal msg="containerd: serve grpc" error="accept unix /var/run/docker/libcontainerd/docker-containerd.sock: use of close...work connection"
8月 16 15:12:05 www.yhchange.com systemd[1]: Stopped Docker Application Container Engine.
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二:    停掉网卡

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[root@www ~]# ifconfig docker0 down

三：  删除网卡 

[root@www ~]# brctl delbr docker0
[root@www ~]# ifconfig
ens32: flags=4163  mtu 1500
        inet 192.168.1.120  netmask 255.255.255.128  broadcast 192.168.1.127
        inet6 2409:8a00:79aa:3f80:20c:29ff:fe5b:9ec1  prefixlen 64  scopeid 0x0
        inet6 fe80::20c:29ff:fe5b:9ec1  prefixlen 64  scopeid 0x20
        ether 00:0c:29:5b:9e:c1  txqueuelen 1000  (Ethernet)
        RX packets 3136  bytes 228338 (222.9 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 1509  bytes 285259 (278.5 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

lo: flags=73  mtu 65536
        inet 127.0.0.1  netmask 255.0.0.0
        inet6 ::1  prefixlen 128  scopeid 0x10
        loop  txqueuelen 1000  (Local Loopback)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 0  bytes 0 (0.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0