安装Docker
wget -qO- https://get.docker.com/|sh
[root@localhost ~]# wget -qO- https://get.docker.com/|sh # Executing docker install script, commit: fc04d2c + sh -c 'yum install -y -q yum-utils' + sh -c 'yum-config-manager --add-repo https://download.docker.com/linux/centos/ docker-ce.repo' Loaded plugins: fastestmirror adding repo from: https://download.docker.com/linux/centos/docker-ce.repo grabbing file https://download.docker.com/linux/centos/docker-ce.repo to /etc/yu m.repos.d/docker-ce.repo repo saved to /etc/yum.repos.d/docker-ce.repo + '[' edge '!=' stable ']' + sh -c 'yum-config-manager --enable docker-ce-edge' Loaded plugins: fastestmirror ============================= repo: docker-ce-edge ============================= [docker-ce-edge] async = True bandwidth = 0 base_persistdir = /var/lib/yum/repos/x86_64/7 baseurl = https://download.docker.com/linux/centos/7/x86_64/edge cache = 0 cachedir = /var/cache/yum/x86_64/7/docker-ce-edge check_config_file_age = True compare_providers_priority = 80 cost = 1000 deltarpm_metadata_percentage = 100 deltarpm_percentage = enabled = 1 enablegroups = True exclude = failovermethod = priority ftp_disable_epsv = False gpgcadir = /var/lib/yum/repos/x86_64/7/docker-ce-edge/gpgcadir gpgcakey = gpgcheck = True gpgdir = /var/lib/yum/repos/x86_64/7/docker-ce-edge/gpgdir gpgkey = https://download.docker.com/linux/centos/gpg hdrdir = /var/cache/yum/x86_64/7/docker-ce-edge/headers http_caching = all includepkgs = ip_resolve = keepalive = True keepcache = False mddownloadpolicy = sqlite mdpolicy = group:small mediaid = metadata_expire = 21600 metadata_expire_filter = read-only:present metalink = minrate = 0 mirrorlist = mirrorlist_expire = 86400 name = Docker CE Edge - x86_64 old_base_cache_dir = password = persistdir = /var/lib/yum/repos/x86_64/7/docker-ce-edge pkgdir = /var/cache/yum/x86_64/7/docker-ce-edge/packages proxy = False proxy_dict = proxy_password = proxy_username = repo_gpgcheck = False retries = 10 skip_if_unavailable = False ssl_check_cert_permissions = True sslcacert = sslclientcert = sslclientkey = sslverify = True throttle = 0 timeout = 30.0 ui_id = docker-ce-edge/x86_64 ui_repoid_vars = releasever, basearch username = + sh -c 'yum makecache' Loaded plugins: fastestmirror base | 3.6 kB 00:00 docker-ce-edge | 2.9 kB 00:00 docker-ce-stable | 2.9 kB 00:00 extras | 3.4 kB 00:00 updates | 3.4 kB 00:00 (1/6): docker-ce-edge/x86_64/primary_db | 14 kB 00:00 (2/6): docker-ce-edge/x86_64/filelists_db | 8.3 kB 00:00 (3/6): docker-ce-edge/x86_64/other_db | 61 kB 00:00 (4/6): docker-ce-stable/x86_64/primary_db | 11 kB 00:01 (5/6): docker-ce-stable/x86_64/other_db | 65 kB 00:00 (6/6): docker-ce-stable/x86_64/filelists_db | 6.9 kB 00:03 Loading mirror speeds from cached hostfile * base: mirrors.163.com * extras: mirrors.aliyun.com * updates: mirrors.cn99.com Metadata Cache Created + sh -c 'yum install -y -q docker-ce' http://mirrors.shu.edu.cn/centos/7.4.1708/extras/x86_64/Packages/pigz-2.3.3-1.el 7.centos.x86_64.rpm: [Errno 12] Timeout on http://mirrors.shu.edu.cn/centos/7.4. 1708/extras/x86_64/Packages/pigz-2.3.3-1.el7.centos.x86_64.rpm: (28, 'Operation too slow. Less than 1000 bytes/sec transferred the last 30 seconds') Trying other mirror. https://download.docker.com/linux/centos/7/x86_64/edge/Packages/docker-ce-18.02. 0.ce-1.el7.centos.x86_64.rpm: [Errno 12] Timeout on https://download.docker.com/ linux/centos/7/x86_64/edge/Packages/docker-ce-18.02.0.ce-1.el7.centos.x86_64.rpm : (28, 'Operation too slow. Less than 1000 bytes/sec transferred the last 30 sec onds') Trying other mirror. warning: /var/cache/yum/x86_64/7/docker-ce-edge/packages/docker-ce-18.02.0.ce-1. el7.centos.x86_64.rpm: Header V4 RSA/SHA512 Signature, key ID 621e9f35: NOKEY Public key for docker-ce-18.02.0.ce-1.el7.centos.x86_64.rpm is not installed Importing GPG key 0x621E9F35: Userid : "Docker Release (CE rpm) <docker@docker.com>" Fingerprint: 060a 61c5 1b55 8a7f 742b 77aa c52f eb6b 621e 9f35 From : https://download.docker.com/linux/centos/gpg If you would like to use Docker as a non-root user, you should now consider adding your user to the "docker" group with something like: sudo usermod -aG docker your-user Remember that you will have to log out and back in for this to take effect! WARNING: Adding a user to the "docker" group will grant the ability to run containers which can be used to obtain root privileges on the docker host. Refer to https://docs.docker.com/engine/security/security/#docker-daemo n-attack-surface for more information.
提示：warning: /var/cache/yum/x86_64/7/docker-ce-edge/packages/docker-ce-18.02.0.ce-1. el7.centos.x86_64.rpm: Header V4 RSA/SHA512 Signature, key ID 621e9f35: NOKEY Public key for docker-ce-18.02.0.ce-1.el7.centos.x86_64.rpm is not installed
本意：docker-ce-18.02.0.ce-1.el7.centos.x86_64.rpm 公钥未安装，key没有导入
[root@localhost ~]# wget https://get.docker.com/gpg --2018-03-01 23:30:16-- https://get.docker.com/gpg Resolving get.docker.com (get.docker.com)... 54.192.212.188, 54.192.212.223, 54. 192.212.14, ... Connecting to get.docker.com (get.docker.com)|54.192.212.188|:443... connected. HTTP request sent, awaiting response... 200 OK Length: 975 [binary/octet-stream] Saving to: ‘gpg’ 100%[======================================>] 975 --.-K/s in 0s 2018-03-01 23:30:18 (122 MB/s) - ‘gpg’ saved [975/975] [root@localhost ~]# rpmkeys --import ./gpg
启动docker
[root@localhost ~]# systemctl start docker.service
查看docker
[root@localhost ~]# docker version Client: Version: 18.02.0-ce API version: 1.36 Go version: go1.9.3 Git commit: fc4de44 Built: Wed Feb 7 21:14:12 2018 OS/Arch: linux/amd64 Experimental: false Orchestrator: swarm Server: Engine: Version: 18.02.0-ce API version: 1.36 (minimum version 1.12) Go version: go1.9.3 Git commit: fc4de44 Built: Wed Feb 7 21:17:42 2018 OS/Arch: linux/amd64 Experimental: false
可以看到docker的客户端和服务端的信息，则docker服务启动成功