centos7配置Docker镜像加速器

创建并编辑文件

[root@localhost ~]# cd /etc/docker/
[root@localhost docker]#
[root@localhost docker]# ls
key.json
[root@localhost docker]#

# vi daemon.json

[root@localhost docker]# pwd
/etc/docker
[root@localhost docker]#
[root@localhost docker]# cat daemon.json
{"registry-mirrors": ["https://hub.daocloud.io"]
}

或者

https://almtd3fa.mirror.aliyuncs.com为阿里云的加速地址。修改后，重启docker

{"registry-mirrors": ["https://almtd3fa.mirror.aliyuncs.com"]
}

重启服务

# systemctl daemon-reload

# systemctl restart docker.service

验证：
# docker info

[root@localhost docker]# docker info
Client:Debug Mode: falseServer:Containers: 0Running: 0Paused: 0Stopped: 0Images: 0Server Version: 19.03.1Storage Driver: overlay2Backing Filesystem: xfsSupports d_type: trueNative Overlay Diff: trueLogging Driver: json-fileCgroup Driver: cgroupfsPlugins:Volume: localNetwork: bridge host ipvlan macvlan null overlayLog: awslogs fluentd gcplogs gelf journald json-file local logentries splunk syslogSwarm: inactiveRuntimes: runcDefault Runtime: runcInit Binary: docker-initcontainerd version: 894b81a4b802e4eb2a91d1ce216b8817763c29fbrunc version: 425e105d5a03fabd737a126ad93d62a9eeede87finit version: fec3683Security Options:seccompProfile: defaultKernel Version: 3.10.0-862.el7.x86_64Operating System: CentOS Linux 7 (Core)OSType: linuxArchitecture: x86_64CPUs: 8Total Memory: 31.26GiBName: localhost.localdomainID: PWEZ:N4ZR:KMJC:EGZ7:EAPB:MU7P:OA5U:42IT:3HI3:7QU6:WL2J:FKKTDocker Root Dir: /var/lib/dockerDebug Mode: falseRegistry: https://index.docker.io/v1/
 Labels:Experimental: falseInsecure Registries:127.0.0.0/8Registry Mirrors:https://hub.daocloud.io/Live Restore Enabled: false