docker docker笔记 runrab 2021-09-17 2023-09-13 Centos7 安装docker
1 2 3 4 5 6 7 8 9 10 [root@VM-16-13-centos ~]# sudo yum remove docker \ docker-client \ docker-client-latest \ docker-common \ docker-latest \ docker-latest-logrotate \ docker-logrotate \ docker-selinux \ docker-engine-selinux \ docker-engine
使用 yum 安装 执行以下命令安装依赖包:
1 [root@VM-16-13-centos ~]# sudo yum install -y yum-utils
安装
1 2 3 4 5 6 7 8 9 [root@VM-16-13-centos ~]# sudo yum-config-manager \ --add-repo \ https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo [root@VM-16-13-centos ~]# sudo sed -i 's/download.docker.com/mirrors.aliyun.com\/docker-ce/g' /etc/yum.repos.d/docker-ce.repo # # 官方源 # $ sudo yum-config-manager \
Centos7 手动安装遇到问题： 1 Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?
进入 /etc/docker，没有daemon.json文件就自己新建一个：
l 1 2 3 [root@VM-16-13-centos ~]# cd /etc/docker [root@VM-16-13-centos docker]# ls ## 注意用别的方法安装的 这个地方也可能没有daemon.json key.json daemon.json
编辑daemon.json文件：地址替换为自己想用的 建议用国内镜像
1 2 3 4 { "registry-mirrors": ["https://registry.docker-cn.com"] }
1 systemctl restart docker.service
脚本安装 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 # [root@VM-16-13-centos ~]# curl -fsSL get.docker.com -o get-docker.sh #安装 脚本 [root@VM-16-13-centos ~]# sudo sh get-docker.sh --mirror Aliyun #使用阿里云镜像 # Executing docker install script, commit: 93d2499759296ac1f9c510605fef85052a2c32be + sh -c 'yum install -y -q yum-utils' Package yum-utils-1.1.31-54.el7_8.noarch already installed and latest version + sh -c 'yum-config-manager --add-repo https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo' Loaded plugins: fastestmirror, langpacks adding repo from: https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo grabbing file https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo to /etc/yum.repos.d/docker-ce.repo repo saved to /etc/yum.repos.d/docker-ce.repo + '[' stable '!=' stable ']' + sh -c 'yum makecache' Loaded plugins: fastestmirror, langpacks Loading mirror speeds from cached hostfile docker-ce-stable | 3.5 kB 00:00:00 epel | 4.7 kB 00:00:00 extras | 2.9 kB 00:00:00 os | 3.6 kB 00:00:00 updates | 2.9 kB 00:00:00 (1/13): docker-ce-stable/7/x86_64/updateinfo | 55 B 00:00:00 (2/13): docker-ce-stable/7/x86_64/primary_db | 75 kB 00:00:00 (3/13): docker-ce-stable/7/x86_64/filelists_db | 31 kB 00:00:00 (4/13): docker-ce-stable/7/x86_64/other_db | 123 kB 00:00:00 (5/13): epel/7/x86_64/prestodelta | 4.5 kB 00:00:00 (6/13): extras/7/x86_64/filelists_db | 277 kB 00:00:00 (7/13): extras/7/x86_64/other_db | 147 kB 00:00:00 (8/13): epel/7/x86_64/other_db | 3.4 MB 00:00:00 (9/13): os/7/x86_64/filelists_db | 7.2 MB 00:00:00 (10/13): os/7/x86_64/other_db | 2.6 MB 00:00:00 (11/13): updates/7/x86_64/other_db | 1.0 MB 00:00:00 (12/13): updates/7/x86_64/filelists_db | 7.8 MB 00:00:00 (13/13): epel/7/x86_64/filelists_db | 12 MB 00:00:01 Metadata Cache Created + '[' -n '' ']' + sh -c 'yum install -y -q docker-ce' warning: /var/cache/yum/x86_64/7/docker-ce-stable/packages/docker-ce-20.10.14-3.el7.x86_64.rpm: Header V4 RSA/SHA512 Signature, key ID 621e9f35: NOKEY Public key for docker-ce-20.10.14-3.el7.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://mirrors.aliyun.com/docker-ce/linux/centos/gpg Warning: RPMDB altered outside of yum. setsebool: SELinux is disabled. + version_gte 20.10 + '[' -z '' ']' + return 0 + sh -c 'yum install -y -q docker-ce-rootless-extras' Package docker-ce-rootless-extras-20.10.14-3.el7.x86_64 already installed and latest version ================================================================================ To run Docker as a non-privileged user, consider setting up the Docker daemon in rootless mode for your user: dockerd-rootless-setuptool.sh install Visit https://docs.docker.com/go/rootless/ to learn about rootless mode. To run the Docker daemon as a fully privileged service, but granting non-root users access, refer to https://docs.docker.com/go/daemon-access/ WARNING: Access to the remote API on a privileged Docker daemon is equivalent to root access on the host. Refer to the 'Docker daemon attack surface' documentation for details: https://docs.docker.com/go/attack-surface/ ================================================================================
常见操作 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 [root@VM-16-13-centos ~]# systemctl enable docker #启动docker Created symlink from /etc/systemd/system/multi-user.target.wants/docker.service to /usr/lib/systemd/system/docker.service. [root@VM-16-13-centos ~]# systemctl start docker #启动docker [root@VM-16-13-centos ~]# docker pull hello-world #从 Docker 镜像仓库获取镜像 Using default tag: latest latest: Pulling from library/hello-world 2db29710123e: Pull complete Digest: sha256:bfea6278a0a267fad2634554f4f0c6f31981eea41c553fdf5a83e95a41d40c38 Status: Downloaded newer image for hello-world:latest docker.io/library/hello-world:latest [root@VM-16-13-centos ~]# docker image ls #列出镜像 REPOSITORY TAG IMAGE ID CREATED SIZE hello-world latest feb5d9fea6a5 6 months ago 13.3kB [root@VM-16-13-centos ~]# docker system df #查看镜像、容器、数据卷所占用的空间。 TYPE TOTAL ACTIVE SIZE RECLAIMABLE Images 1 0 13.26kB 13.26kB (100%) Containers 0 0 0B 0B Local Volumes 0 0 0B 0B Build Cache 0 0 0B 0B [root@VM-16-13-centos ~]# docker image ls -f dangling=true #查看虚悬镜像 REPOSITORY TAG IMAGE ID CREATED SIZE [root@VM-16-13-centos ~]# docker image prune #删除虚悬镜像 WARNING! This will remove all dangling images. Are you sure you want to continue? [y/N] y Total reclaimed space: 0B # [root@VM-16-13-centos ~]# docker pull nginx Using default tag: latest latest: Pulling from library/nginx c229119241af: Pull complete 2215908dc0a2: Pull complete 08c3cb2073f1: Pull complete 18f38162c0ce: Pull complete 10e2168f148a: Pull complete c4ffe9532b5f: Pull complete Digest: sha256:2275af0f20d71b293916f1958f8497f987b8d8fd8113df54635f2a5915002bf1 Status: Downloaded newer image for nginx:latest docker.io/library/nginx:latest [root@VM-16-13-centos ~]# docker pull redis Using default tag: latest latest: Pulling from library/redis c229119241af: Already exists bed41eb8190a: Pull complete 5e59eaa723f1: Pull complete fd5ad7669819: Pull complete 566c064eef6e: Pull complete 20c7cfac25de: Pull complete Digest: sha256:69a3ab2516b560690e37197b71bc61ba245aafe4525ebdece1d8a0bc5669e3e2 Status: Downloaded newer image for redis:latest docker.io/library/redis:latest [root@VM-16-13-centos ~]# docker image ls -a #-a 显示 中间层镜像 REPOSITORY TAG IMAGE ID CREATED SIZE redis latest bba24acba395 8 days ago 113MB nginx latest 12766a6745ee 8 days ago 142MB hello-world latest feb5d9fea6a5 6 months ago 13.3kB [root@VM-16-13-centos ~]# docker image ls hello #列出部分镜像 要不写出全称 要不 用通配符 REPOSITORY TAG IMAGE ID CREATED SIZE [root@VM-16-13-centos ~]# docker image ls hello* # 通配符 REPOSITORY TAG IMAGE ID CREATED SIZE hello-world latest feb5d9fea6a5 6 months ago 13.3kB [root@VM-16-13-centos ~]# docker image ls -q #以特定格式显示 bba24acba395 12766a6745ee feb5d9fea6a5 [root@VM-16-13-centos ~]# docker image ls --format "{{.ID}}: {{.Repository}}" bba24acba395: redis 12766a6745ee: nginx feb5d9fea6a5: hello-world [root@VM-16-13-centos ~]# docker image ls --format "table {{.ID}}\t{{.Repository}}\t{{.Tag}}" IMAGE ID REPOSITORY TAG bba24acba395 redis latest 12766a6745ee nginx latest feb5d9fea6a5 hello-world latest
