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CentOS7安裝Docker具體步驟
Docker 是一個開源的應用容器引擎，讓開發(fā)者可以打包他們的應用以及依賴包到一個可移植的容器中，然后發(fā)布到任何流行的 Linux 機器上，也可以實現(xiàn)虛擬化，下面為大家分享一下CentOS7 安裝 Docker具體步驟。
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1 安裝 Docker
如果有的話，卸載舊的Docker，否則可能會不兼容
[root@Docker ]# yum remove -y docker docker-io docker-selinux python-docer-py安裝 Docker-CE社區(qū)版本
[root@Docker ]# yum -y install docker-ce啟動 Docker
[root@Docker ]# systemctl start docker [root@Docker ]# systemctl enable docker Created symlink from /etc/systemd/system/multi-user.target.wants/docker.service to /usr/lib/systemd/system/docker.service. [root@Docker ]# systemctl status docker ● docker.service - Docker Application Container Engine Loaded: loaded (/usr/lib/systemd/system/docker.service; enabled; vendor preset: disabled) Active: active (running) since Mon 2020-03-30 13:17:47 EDT; 16s ago Docs: https://docs.docker.com Main PID: 12932 (dockerd) CGroup: /system.slice/docker.service └─12932 /usr/bin/dockerd -H fd:// --containerd=/run/contain... Mar 30 13:17:47 Docker dockerd[12932 ]: time="2020-0... Mar 30 13:17:47 Docker dockerd[12932 ]: time="2020-0... Mar 30 13:17:47 Docker dockerd[12932 ]: time="2020-0... Mar 30 13:17:47 Docker dockerd[12932 ]: time="2020-0... Mar 30 13:17:47 Docker dockerd[12932 ]: time="2020-0... Mar 30 13:17:47 Docker dockerd[12932 ]: time="2020-0... Mar 30 13:17:47 Docker dockerd[12932 ]: time="2020-0... Mar 30 13:17:47 Docker dockerd[12932 ]: time="2020-0... Mar 30 13:17:47 Docker dockerd[12932 ]: time="2020-0... Mar 30 13:17:47 Docker systemd[1 ]: Started Docker A... Hint: Some lines were ellipsized, use -l to show in full. [root@Docker ]# docker version Client: Docker Engine - Community Version: 19.03.8 API version: 1.40 Go version: go1.12.17 Git commit: afacb8b Built: Wed Mar 11 01:27:04 2020 OS/Arch: linux/amd64 Experimental: false Server: Docker Engine - Community Engine: Version: 19.03.8 API version: 1.40 (minimum version 1.12) Go version: go1.12.17 Git commit: afacb8b Built: Wed Mar 11 01:25:42 2020 OS/Arch: linux/amd64 Experimental: false containerd: Version: 1.2.13 GitCommit: 7ad184331fa3e55e52b890ea95e65ba581ae3429 runc: Version: 1.0.0-rc10 GitCommit: dc9208a3303feef5b3839f4323d9beb36df0a9dd docker-init: Version: 0.18.0 GitCommit: fec36832 指定docker 鏡像加速器 （很重要，不然后期從國外下載docker鏡像會直接報錯，而且速度慢）
國內docker倉庫加速站點
https://registry.docker-cn.com http://hub-mirror.c.163.com https://3laho3y3.mirror.aliyuncs.com http://f1361db2.m.daocloud.io https://mirror.ccs.tencentyun.com https://docker.mirrors.ustc.edu.cn http://dockerhub.azk8s.cn/配置加速節(jié)點
[root@Docker ]# vim /etc/docker/daemon.json { "registry-mirrors": ["https://registry.docker-cn.com" ] }注意不可見字符！ 注：如果需要使用自己的本地私有倉庫，寫成如下：
{ "registry-mirrors": ["https://e9yneuymirror.aliyuncs.com" ] "insecure-registries": ["192.168.10.7:4000" ] }另外的參考配置：
{ "insecure-registries": ["0.0.0.0/0" ], "log-opts": { "max-size": "20m", "max-file": "5" } }3 重啟相關服務
[root@Docker ]# systemctl daemon-reload [root@Docker ]# systemctl restart docker && systemctl status docker4 顯示 Docker 系統(tǒng)信息
[root@Docker ]# docker info Client: Debug Mode: false Server: Containers: 0 Running: 0 Paused: 0 Stopped: 0 Images: 0 Server Version: 19.03.8 Storage Driver: overlay2 Backing Filesystem: Supports d_type: true Native Overlay Diff: true Logging Driver: json-file Cgroup Driver: cgroupfs Plugins: Volume: local Network: bridge host ipvlan macvlan null overlay Log: awslogs fluentd gcplogs gelf journald json-file local logentries splunk syslog Swarm: inactive Runtimes: runc Default Runtime: runc Init Binary: docker-init containerd version: 7ad184331fa3e55e52b890ea95e65ba581ae3429 runc version: dc9208a3303feef5b3839f4323d9beb36df0a9dd init version: fec3683 Security Options: seccomp Profile: default Kernel Version: 3.10.0-957.el7.x86_64 Operating System: CentOS Linux 7 (Core) OSType: linux Architecture: x86_64 CPUs: 2 Total Memory: 7.62GiB Name: Docker ID: SZWH:KWZM:GDQA:ZRHY:PU7A:JV23:7TX3:SYUM:J3UX:ZEOR:JG44:SDHL Docker Root Dir: /var/lib/docker Debug Mode: false Registry: https://index.docker.io/v1/ Labels: Experimental: false Insecure Registries: 127.0.0.0/8 Registry Mirrors: https://registry.docker-cn.com Live Restore Enabled: false WARNING: IPv4 forwarding is disabled WARNING: bridge-nf-call-iptables is disabled WARNING: bridge-nf-call-ip6tables is disabled5 測試拉取 Docker 鏡像
[root@Docker ]# docker image pull centos:latest latest: Pulling from library/centos 8a29a15cefae: Pull complete Digest: sha256:fe8d824220415eed5477b63addf40fb06c3b049404242b31982106ac204f6700 Status: Downloaded newer image for centos:latest docker.io/library/centos:latest #拉取 Docker 鏡像成功 [root@Docker ]# docker images REPOSITORY TAG IMAGE ID CREATED SIZE centos latest 470671670cac 2 months ago 237MB
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