Centos8 安装Docker
linux 安装Docker 、配置阿里云加速镜像 .
·
查看系统版本和系统内核信息
[root@Tseng-HW ~]# lsb_release -a
LSB Version: :core-4.1-amd64:core-4.1-noarch
Distributor ID: CentOS
Description: CentOS Linux release 8.2.2004 (Core)
Release: 8.2.2004
Codename: Core
[root@Tseng-HW ~]# uname -r
4.18.0-240.10.1.el8_3.x86_64
[root@Tseng-HW ~]#1. 下载docker-ce的repo
[root@Tseng-HW ~]# curl https://download.docker.com/linux/centos/docker-ce.repo -o /etc/yum.repos.d/docker-ce.repo2. 安装依赖
[root@Tseng-HW ~]# yum install https://download.docker.com/linux/fedora/30/x86_64/stable/Packages/containerd.io-1.2.6-3.3.fc30.x86_64.rpm3. 安装docker-ce
[root@Tseng-HW ~]# dnf -y install docker-ce docker-ce-cli --nobest4.启动 docker
[root@Tseng-HW ~]# systemctl start docker5.查看 docker 版本信息
[root@Tseng-HW ~]# docker -v
Docker version 20.10.11, build dea93966.设置开机自动启动
[root@Tseng-HW ~]# systemctl enable --now docker
Created symlink /etc/systemd/system/multi-user.target.wants/docker.service → /usr/lib/systemd/system/docker.service.
[root@Tseng-HW ~]#7、Alibaba Cloud Linux 3 安装社区版Docker（docker-ce）。
- 运行以下命令，添加docker-ce的dnf源。
dnf config-manager --add-repo=https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo - 运行以下命令，安装Alibaba Cloud Linux 3专用的dnf源兼容插件。
dnf -y install dnf-plugin-releasever-adapter --repo alinux3-plus如果您不使用Alibaba Cloud Linux 3专用的dnf源兼容插件，将无法正常安装docker-ce。
- 运行以下命令，安装docker-ce。
如果执行命令，出现类似下图的报错信息，您需要注释/etc/yum.repos.d下的CentOS源，注释后重新安装docker-ce。dnf -y install docker-ce --nobest
- 运行以下命令，查看docker-ce是否成功安装。
dnf list docker-ce回显信息如下图所示，表示docker-ce成功安装。
-
- 运行以下命令，启动Docker服务。
systemctl start docker - 运行以下命令，查看Docker服务的运行状态
新服务器执行参考：
[root@iZbp19kg4d65mawlshvahzZ ~]# free -h
total used free shared buff/cache available
Mem: 29Gi 218Mi 28Gi 1.0Mi 645Mi 29Gi
Swap: 0B 0B 0B
[root@iZbp19kg4d65mawlshvahzZ ~]# lsb_release -a
LSB Version: :core-4.1-amd64:core-4.1-noarch
Distributor ID: AlibabaCloud
Description: Alibaba Cloud Linux release 3 (Soaring Falcon)
Release: 3
Codename: SoaringFalcon
[root@iZbp19kg4d65mawlshvahzZ ~]# dnf config-manager --add-repo=https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
Adding repo from: https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
[root@iZbp19kg4d65mawlshvahzZ ~]# dnf -y install dnf-plugin-releasever-adapter --repo alinux3-plus
Last metadata expiration check: 0:12:34 ago on Mon 08 May 2023 01:40:42 PM CST.
Package dnf-plugin-releasever-adapter-1.0-2.al8.noarch is already installed.
Dependencies resolved.
Nothing to do.
Complete!
[root@iZbp19kg4d65mawlshvahzZ ~]# dnf -y install docker-ce --nobest
Docker CE Stable - x86_64 301 kB/s | 42 kB 00:00
Dependencies resolved.
==========================================================================================================================================================================================================================
Package Architecture Version Repository Size
==========================================================================================================================================================================================================================
Installing:
docker-ce x86_64 3:23.0.5-1.el8 docker-ce-stable 23 M
Installing dependencies:
checkpolicy x86_64 2.9-1.2.al8 alinux3-os 348 k
container-selinux noarch 2:2.189.0-1.al8 alinux3-updates 59 k
containerd.io x86_64 1.6.21-3.1.el8 docker-ce-stable 34 M
docker-ce-cli x86_64 1:23.0.5-1.el8 docker-ce-stable 7.1 M
docker-ce-rootless-extras x86_64 23.0.5-1.el8 docker-ce-stable 4.8 M
fuse-overlayfs x86_64 1.9-1.al8 alinux3-updates 73 k
fuse3 x86_64 3.3.0-15.al8 alinux3-updates 54 k
fuse3-libs x86_64 3.3.0-15.al8 alinux3-updates 97 k
libcgroup x86_64 0.41-19.2.al8 alinux3-os 70 k
libslirp x86_64 4.4.0-1.al8 alinux3-updates 71 k
policycoreutils-python-utils noarch 2.9-20.al8 alinux3-updates 253 k
python3-audit x86_64 3.0.7-2.al8.2 alinux3-updates 86 k
python3-libsemanage x86_64 2.9-9.al8 alinux3-updates 124 k
python3-policycoreutils noarch 2.9-20.al8 alinux3-updates 2.2 M
python3-setools x86_64 4.3.0-3.al8 alinux3-updates 651 k
slirp4netns x86_64 1.2.0-2.al8 alinux3-updates 54 k
Installing weak dependencies:
docker-buildx-plugin x86_64 0.10.4-1.el8 docker-ce-stable 12 M
docker-compose-plugin x86_64 2.17.3-1.el8 docker-ce-stable 12 M
Transaction Summary
==========================================================================================================================================================================================================================
Install 19 Packages
Total download size: 97 M
Installed size: 367 M
Downloading Packages:
(1/19): container-selinux-2.189.0-1.al8.noarch.rpm 3.1 MB/s | 59 kB 00:00
(2/19): libcgroup-0.41-19.2.al8.x86_64.rpm 1.9 MB/s | 70 kB 00:00
(3/19): checkpolicy-2.9-1.2.al8.x86_64.rpm 7.4 MB/s | 348 kB 00:00
(4/19): fuse-overlayfs-1.9-1.al8.x86_64.rpm 2.2 MB/s | 73 kB 00:00
(5/19): fuse3-3.3.0-15.al8.x86_64.rpm 2.2 MB/s | 54 kB 00:00
(6/19): libslirp-4.4.0-1.al8.x86_64.rpm 2.7 MB/s | 71 kB 00:00
(7/19): fuse3-libs-3.3.0-15.al8.x86_64.rpm 2.5 MB/s | 97 kB 00:00
(8/19): policycoreutils-python-utils-2.9-20.al8.noarch.rpm 9.0 MB/s | 253 kB 00:00
(9/19): python3-libsemanage-2.9-9.al8.x86_64.rpm 10 MB/s | 124 kB 00:00
(10/19): python3-audit-3.0.7-2.al8.2.x86_64.rpm 3.6 MB/s | 86 kB 00:00
(11/19): python3-setools-4.3.0-3.al8.x86_64.rpm 16 MB/s | 651 kB 00:00
(12/19): slirp4netns-1.2.0-2.al8.x86_64.rpm 1.4 MB/s | 54 kB 00:00
(13/19): python3-policycoreutils-2.9-20.al8.noarch.rpm 20 MB/s | 2.2 MB 00:00
(14/19): docker-buildx-plugin-0.10.4-1.el8.x86_64.rpm 5.4 MB/s | 12 MB 00:02
(15/19): docker-ce-cli-23.0.5-1.el8.x86_64.rpm 2.9 MB/s | 7.1 MB 00:02
(16/19): docker-ce-23.0.5-1.el8.x86_64.rpm 4.8 MB/s | 23 MB 00:04
(17/19): docker-ce-rootless-extras-23.0.5-1.el8.x86_64.rpm 3.1 MB/s | 4.8 MB 00:01
(18/19): docker-compose-plugin-2.17.3-1.el8.x86_64.rpm 6.3 MB/s | 12 MB 00:01
(19/19): containerd.io-1.6.21-3.1.el8.x86_64.rpm 4.9 MB/s | 34 MB 00:06
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Total 14 MB/s | 97 MB 00:07
Docker CE Stable - x86_64 27 kB/s | 1.6 kB 00:00
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
Key imported successfully
Running transaction check
Transaction check succeeded.
Running transaction test
Transaction test succeeded.
Running transaction
Preparing : 1/1
Installing : docker-compose-plugin-2.17.3-1.el8.x86_64 1/19
Running scriptlet: docker-compose-plugin-2.17.3-1.el8.x86_64 1/19
Installing : fuse3-libs-3.3.0-15.al8.x86_64 2/19
Running scriptlet: fuse3-libs-3.3.0-15.al8.x86_64 2/19
Installing : fuse3-3.3.0-15.al8.x86_64 3/19
Installing : fuse-overlayfs-1.9-1.al8.x86_64 4/19
Running scriptlet: fuse-overlayfs-1.9-1.al8.x86_64 4/19
Installing : docker-buildx-plugin-0.10.4-1.el8.x86_64 5/19
Running scriptlet: docker-buildx-plugin-0.10.4-1.el8.x86_64 5/19
Installing : docker-ce-cli-1:23.0.5-1.el8.x86_64 6/19
Running scriptlet: docker-ce-cli-1:23.0.5-1.el8.x86_64 6/19
Installing : python3-setools-4.3.0-3.al8.x86_64 7/19
Installing : python3-libsemanage-2.9-9.al8.x86_64 8/19
Installing : python3-audit-3.0.7-2.al8.2.x86_64 9/19
Installing : libslirp-4.4.0-1.al8.x86_64 10/19
Installing : slirp4netns-1.2.0-2.al8.x86_64 11/19
Running scriptlet: libcgroup-0.41-19.2.al8.x86_64 12/19
Installing : libcgroup-0.41-19.2.al8.x86_64 12/19
Running scriptlet: libcgroup-0.41-19.2.al8.x86_64 12/19
Installing : checkpolicy-2.9-1.2.al8.x86_64 13/19
Installing : python3-policycoreutils-2.9-20.al8.noarch 14/19
Installing : policycoreutils-python-utils-2.9-20.al8.noarch 15/19
Running scriptlet: container-selinux-2:2.189.0-1.al8.noarch 16/19
Installing : container-selinux-2:2.189.0-1.al8.noarch 16/19
Running scriptlet: container-selinux-2:2.189.0-1.al8.noarch 16/19
Installing : containerd.io-1.6.21-3.1.el8.x86_64 17/19
Running scriptlet: containerd.io-1.6.21-3.1.el8.x86_64 17/19
Installing : docker-ce-rootless-extras-23.0.5-1.el8.x86_64 18/19
Running scriptlet: docker-ce-rootless-extras-23.0.5-1.el8.x86_64 18/19
Installing : docker-ce-3:23.0.5-1.el8.x86_64 19/19
Running scriptlet: docker-ce-3:23.0.5-1.el8.x86_64 19/19
Running scriptlet: container-selinux-2:2.189.0-1.al8.noarch 19/19
Running scriptlet: docker-ce-3:23.0.5-1.el8.x86_64 19/19
Verifying : checkpolicy-2.9-1.2.al8.x86_64 1/19
Verifying : libcgroup-0.41-19.2.al8.x86_64 2/19
Verifying : container-selinux-2:2.189.0-1.al8.noarch 3/19
Verifying : fuse-overlayfs-1.9-1.al8.x86_64 4/19
Verifying : fuse3-3.3.0-15.al8.x86_64 5/19
Verifying : fuse3-libs-3.3.0-15.al8.x86_64 6/19
Verifying : libslirp-4.4.0-1.al8.x86_64 7/19
Verifying : policycoreutils-python-utils-2.9-20.al8.noarch 8/19
Verifying : python3-audit-3.0.7-2.al8.2.x86_64 9/19
Verifying : python3-libsemanage-2.9-9.al8.x86_64 10/19
Verifying : python3-policycoreutils-2.9-20.al8.noarch 11/19
Verifying : python3-setools-4.3.0-3.al8.x86_64 12/19
Verifying : slirp4netns-1.2.0-2.al8.x86_64 13/19
Verifying : containerd.io-1.6.21-3.1.el8.x86_64 14/19
Verifying : docker-buildx-plugin-0.10.4-1.el8.x86_64 15/19
Verifying : docker-ce-3:23.0.5-1.el8.x86_64 16/19
Verifying : docker-ce-cli-1:23.0.5-1.el8.x86_64 17/19
Verifying : docker-ce-rootless-extras-23.0.5-1.el8.x86_64 18/19
Verifying : docker-compose-plugin-2.17.3-1.el8.x86_64 19/19
Installed:
checkpolicy-2.9-1.2.al8.x86_64 container-selinux-2:2.189.0-1.al8.noarch containerd.io-1.6.21-3.1.el8.x86_64 docker-buildx-plugin-0.10.4-1.el8.x86_64 docker-ce-3:23.0.5-1.el8.x86_64
docker-ce-cli-1:23.0.5-1.el8.x86_64 docker-ce-rootless-extras-23.0.5-1.el8.x86_64 docker-compose-plugin-2.17.3-1.el8.x86_64 fuse-overlayfs-1.9-1.al8.x86_64 fuse3-3.3.0-15.al8.x86_64
fuse3-libs-3.3.0-15.al8.x86_64 libcgroup-0.41-19.2.al8.x86_64 libslirp-4.4.0-1.al8.x86_64 policycoreutils-python-utils-2.9-20.al8.noarch python3-audit-3.0.7-2.al8.2.x86_64
python3-libsemanage-2.9-9.al8.x86_64 python3-policycoreutils-2.9-20.al8.noarch python3-setools-4.3.0-3.al8.x86_64 slirp4netns-1.2.0-2.al8.x86_64
Complete!
[root@iZbp19kg4d65mawlshvahzZ ~]#
[root@iZbp19kg4d65mawlshvahzZ ~]#
[root@iZbp19kg4d65mawlshvahzZ ~]#
[root@iZbp19kg4d65mawlshvahzZ ~]# dnf list docker-ce
Last metadata expiration check: 0:00:13 ago on Mon 08 May 2023 01:54:47 PM CST.
Installed Packages
docker-ce.x86_64 3:23.0.5-1.el8 @docker-ce-stable
[root@iZbp19kg4d65mawlshvahzZ ~]# systemctl start docker
[root@iZbp19kg4d65mawlshvahzZ ~]# systemctl status docker
● docker.service - Docker Application Container Engine
Loaded: loaded (/usr/lib/systemd/system/docker.service; enabled; vendor preset: enabled)
Active: active (running) since Mon 2023-05-08 13:55:27 CST; 7s ago
Docs: https://docs.docker.com
Main PID: 7253 (dockerd)
Tasks: 12
Memory: 29.3M
CGroup: /system.slice/docker.service
└─7253 /usr/bin/dockerd -H fd:// --containerd=/run/containerd/containerd.sock
May 08 13:55:26 iZbp19kg4d65mawlshvahzZ systemd[1]: Starting Docker Application Container Engine...
May 08 13:55:26 iZbp19kg4d65mawlshvahzZ dockerd[7253]: time="2023-05-08T13:55:26.784482286+08:00" level=info msg="Starting up"
May 08 13:55:26 iZbp19kg4d65mawlshvahzZ dockerd[7253]: time="2023-05-08T13:55:26.821512467+08:00" level=info msg="Loading containers: start."
May 08 13:55:27 iZbp19kg4d65mawlshvahzZ dockerd[7253]: time="2023-05-08T13:55:27.132312686+08:00" level=info msg="Loading containers: done."
May 08 13:55:27 iZbp19kg4d65mawlshvahzZ dockerd[7253]: time="2023-05-08T13:55:27.147869717+08:00" level=warning msg="Not using native diff for overlay2, this may cause degraded performance for building images: kernel >
May 08 13:55:27 iZbp19kg4d65mawlshvahzZ dockerd[7253]: time="2023-05-08T13:55:27.148058427+08:00" level=info msg="Docker daemon" commit=94d3ad6 graphdriver=overlay2 version=23.0.5
May 08 13:55:27 iZbp19kg4d65mawlshvahzZ dockerd[7253]: time="2023-05-08T13:55:27.148147446+08:00" level=info msg="Daemon has completed initialization"
May 08 13:55:27 iZbp19kg4d65mawlshvahzZ systemd[1]: Started Docker Application Container Engine.
May 08 13:55:27 iZbp19kg4d65mawlshvahzZ dockerd[7253]: time="2023-05-08T13:55:27.180481680+08:00" level=info msg="API listen on /run/docker.sock"
[root@iZbp19kg4d65mawlshvahzZ ~]# systemctl enable docker
[root@iZbp19kg4d65mawlshvahzZ ~]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
[root@iZbp19kg4d65mawlshvahzZ ~]# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
[root@iZbp19kg4d65mawlshvahzZ ~]#-
回显信息如下图所示，表示Docker服务处于运行中的状态。systemctl status docker
说明 如果您需要查看Docker的版本，请运行docker -v命令。
使用Docker Docker有以下基本用法： 管理Docker守护进程。
systemctl start docker #运行Docker守护进程
systemctl stop docker #停止Docker守护进程
systemctl restart docker #重启Docker守护进程
systemctl enable docker #设置Docker开机自启动
systemctl status docker #查看Docker的运行状态
说明 通过yum源的方式安装的Docker（podman-docker）没有守护进程（systemd），因此不支持systemctl命令的相关操作。
7、设置加速镜像（阿里云镜像）
针对Docker客户端版本大于 1.10.0 的用户
您可以通过修改daemon配置文件/etc/docker/daemon.json来使用加速器
sudo mkdir -p /etc/docker sudo tee /etc/docker/daemon.json <<-'EOF' { "registry-mirrors": ["https://8dp7kg6k.mirror.aliyuncs.com"] } EOF sudo systemctl daemon-reload sudo systemctl restart docker
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