docker安装并设置开机启动（CentOS7/8） |
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docker安装并设置开机启动（CentOS7/8）
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CentOS7.2
docker分为CE和EE版本，EE版本收费，一般我们使用CE版本就满足要求了 docker安装及启动 docker安装很简单，直接使用如下命令安装即可，安装后的docker版本即为CE免费版(对于更高的linux版本，可以先执行安装docker-ce,如果提示Nothing to do，则再直接使用如下命令) yum -y install docker安装结束后，查看docker运行状态
启动docker
查看/var/log/messages日志，扎到如下错误信息 Aug 12 19:29:14 localhost dockerd-current: Error starting daemon: SELinux is not supported with the overlay2 graph driver on this kernel. Either boot into a newer kernel or disable selinux in docker (--selinux-enabled=false)根据错误提示，修改docker配置文件，设置--selinux-enabled=false vim /etc/sysconfig/docker
保存后，重新启动docker，查看启动状态
设置docker开机启动 docker安装之后，已经安装了开机启动service文件，但还需要在设置下开机启动，才能在服务器重启时自动启动 systemctl enable docker
CentOS8 查询docker 系统版本为Basic Web Server [root@localhost ~]# yum search docker Last metadata expiration check: 7:18:55 ago on Sun 13 Oct 2019 01:30:27 AM CST. ============================================================================== Summary & Name Matched: docker =============================================================================== podman-docker.noarch : Emulate Docker CLI using podman podman-docker.noarch : Emulate Docker CLI using podman pcp-pmda-docker.x86_64 : Performance Co-Pilot (PCP) metrics from the Docker daemon ================================================================================== Summary Matched: docker ================================================================================== oci-umount.x86_64 : OCI umount hook for docker oci-systemd-hook.x86_64 : OCI systemd hook for docker oci-systemd-hook.x86_64 : OCI systemd hook for docker skopeo.x86_64 : Inspect Docker images and repositories on registries这里没有我们想要的docker-ce 下载docker-ce repo curl https://download.docker.com/linux/centos/docker-ce.repo -o /etc/yum.repos.d/docker-ce.repo安装docker [root@localhost ~]# yum -y install docker-ce Docker CE Stable - x86_64 6.5 kB/s | 20 kB 00:03 Error: Problem: package docker-ce-3:19.03.3-3.el7.x86_64 requires containerd.io >= 1.2.2-3, but none of the providers can be installed - cannot install the best candidate for the job - package containerd.io-1.2.10-3.2.el7.x86_64 is excluded - package containerd.io-1.2.2-3.3.el7.x86_64 is excluded - package containerd.io-1.2.2-3.el7.x86_64 is excluded - package containerd.io-1.2.4-3.1.el7.x86_64 is excluded - package containerd.io-1.2.5-3.1.el7.x86_64 is excluded - package containerd.io-1.2.6-3.3.el7.x86_64 is excluded (try to add '--skip-broken' to skip uninstallable packages or '--nobest' to use not only best candidate packages)提示信息中告诉我们需要containerd.io依赖 yum -y install https://download.docker.com/linux/fedora/30/x86_64/stable/Packages/containerd.io-1.2.6-3.3.fc30.x86_64.rpm再次安装docker（如果在安装docker-ce repo之前执行过yum -y install docker，则需要先执行yum remove docker卸载） yum -y install docker-ce启动docker systemctl start docker加入开机启动 systemctl enable docker systemctl daemon-reload查看docker版本 [root@localhost ~]# docker version Client: Docker Engine - Community Version: 19.03.3 API version: 1.40 Go version: go1.12.10 Git commit: a872fc2f86 Built: Tue Oct 8 00:58:10 2019 OS/Arch: linux/amd64 Experimental: false Server: Docker Engine - Community Engine: Version: 19.03.3 API version: 1.40 (minimum version 1.12) Go version: go1.12.10 Git commit: a872fc2f86 Built: Tue Oct 8 00:56:46 2019 OS/Arch: linux/amd64 Experimental: false containerd: Version: 1.2.6 GitCommit: 894b81a4b802e4eb2a91d1ce216b8817763c29fb runc: Version: 1.0.0-rc8 GitCommit: 425e105d5a03fabd737a126ad93d62a9eeede87f docker-init: Version: 0.18.0 GitCommit: fec3683到此docker就安装完成了 |
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