修改主机名：
[root@localhost ~]# hostnamectl set-hostname docker
[root@localhost ~]# bash
[root@docker ~]#
查看主机的内核版本（因为docker官方要求实在3.8以上）
[root@docker ~]# uname -a
Linux docker 3.10.0-1160.el7.x86_64 #1 SMP Mon Oct 19 16:18:59 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
[root@docker ~]#
#3.10可以满足
关闭防火墙：
[root@docker ~]# systemctl stop firewalld
关闭Linux：
#原文件内容
[root@docker ~]# cat /etc/selinux/config
# This file controls the state of SELinux on the system.
# SELINUX= can take one of these three values:
# enforcing - SELinux security policy is enforced.
# permissive - SELinux prints warnings instead of enforcing.
# disabled - No SELinux policy is loaded.
SELINUX=enforcing
# SELINUXTYPE= can take one of three values:
# targeted - Targeted processes are protected,
# minimum - Modification of targeted policy. Only selected processes are protected.
# mls - Multi Level Security protection.
SELINUXTYPE=targeted
#修改后文件内容：
[root@docker ~]# cat /etc/selinux/config
# This file controls the state of SELinux on the system.
# SELINUX= can take one of these three values:
# enforcing - SELinux security policy is enforced.
# permissive - SELinux prints warnings instead of enforcing.
# disabled - No SELinux policy is loaded.
SELINUX=disabled
# SELINUXTYPE= can take one of three values:
# targeted - Targeted processes are protected,
# minimum - Modification of targeted policy. Only selected processes are protected.
# mls - Multi Level Security protection.
SELINUXTYPE=targeted
通过安装wget命令后续来完成安装docker社区版：
[root@docker ~]# yum install wget -y
查看目前可安装docker版本：
[root@docker ~]# yum list | grep docker
cockpit-docker.x86_64 195.12-1.el7.centos extras
docker.x86_64 2:1.13.1-209.git7d71120.el7.centos
docker-client.x86_64 2:1.13.1-209.git7d71120.el7.centos
docker-client-latest.x86_64 1.13.1-58.git87f2fab.el7.centos
docker-common.x86_64 2:1.13.1-209.git7d71120.el7.centos
docker-distribution.x86_64 2.6.2-2.git48294d9.el7 extras
docker-latest.x86_64 1.13.1-58.git87f2fab.el7.centos
docker-latest-logrotate.x86_64 1.13.1-58.git87f2fab.el7.centos
docker-latest-v1.10-migrator.x86_64 1.13.1-58.git87f2fab.el7.centos
docker-logrotate.x86_64 2:1.13.1-209.git7d71120.el7.centos
docker-lvm-plugin.x86_64 2:1.13.1-209.git7d71120.el7.centos
docker-novolume-plugin.x86_64 2:1.13.1-209.git7d71120.el7.centos
docker-registry.x86_64 0.9.1-7.el7 extras
docker-v1.10-migrator.x86_64 2:1.13.1-209.git7d71120.el7.centos
pcp-pmda-docker.x86_64 4.3.2-13.el7_9 updates
podman-docker.noarch 1.6.4-36.el7_9 extras
python-docker-py.noarch 1:1.10.6-11.el7 extras
python-docker-pycreds.noarch 1:0.3.0-11.el7 extras
[root@docker ~]#
#上述安装包没有社区版咱们可以从阿里云的源中来下载获取当然也可以直接安装docker.x86_64
进入源目录配置阿里云
[root@docker ~]# cd /etc/yum.repos.d/
[root@docker yum.repos.d]# wget http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo --2023-02-03 12:11:20-- http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
正在解析主机 mirrors.aliyun.com (mirrors.aliyun.com)... 140.249.32.238, 140.249.32.241, 140.249.32.242, ...
正在连接 mirrors.aliyun.com (mirrors.aliyun.com)|140.249.32.238|:80... 已连接。
已发出 HTTP 请求，正在等待回应... 200 OK
长度：2081 (2.0K) [application/octet-stream]
正在保存至: “docker-ce.repo”
100%[==========================================================================================>] 2,081 --.-K/s 用时 0s
2023-02-03 12:11:20 (250 MB/s) - 已保存 “docker-ce.repo” [2081/2081])
[root@docker yum.repos.d]#
进行查看：
[root@docker yum.repos.d]# ls -lrt
总用量 44
-rw-r--r--. 1 root root 616 10月 23 2020 CentOS-x86_64-kernel.repo
-rw-r--r--. 1 root root 8515 10月 23 2020 CentOS-Vault.repo
-rw-r--r--. 1 root root 1331 10月 23 2020 CentOS-Sources.repo
-rw-r--r--. 1 root root 630 10月 23 2020 CentOS-Media.repo
-rw-r--r--. 1 root root 314 10月 23 2020 CentOS-fasttrack.repo
-rw-r--r--. 1 root root 649 10月 23 2020 CentOS-Debuginfo.repo
-rw-r--r--. 1 root root 1309 10月 23 2020 CentOS-CR.repo
-rw-r--r--. 1 root root 1664 10月 23 2020 CentOS-Base.repo
-rw-r--r--. 1 root root 2081 2月 3 12:10 docker-ce.repo #可以看到这里有一个docker
[root@docker yum.repos.d]#
再次查看可安装的docker版本：
[root@docker yum.repos.d]# yum list | grep docker
cockpit-docker.x86_64 195.12-1.el7.centos extras
containerd.io.x86_64 1.6.16-3.1.el7 docker-ce-stable
docker.x86_64 2:1.13.1-209.git7d71120.el7.centos
docker-buildx-plugin.x86_64 0.10.2-1.el7 docker-ce-stable
docker-ce.x86_64 #这里、、、 3:23.0.0-1.el7 docker-ce-stable
docker-ce-cli.x86_64 1:23.0.0-1.el7 docker-ce-stable
docker-ce-rootless-extras.x86_64 23.0.0-1.el7 docker-ce-stable
docker-ce-selinux.noarch 17.03.3.ce-1.el7 docker-ce-stable
docker-client.x86_64 2:1.13.1-209.git7d71120.el7.centos
docker-client-latest.x86_64 1.13.1-58.git87f2fab.el7.centos
docker-common.x86_64 2:1.13.1-209.git7d71120.el7.centos
docker-compose-plugin.x86_64 2.15.1-3.el7 docker-ce-stable
docker-distribution.x86_64 2.6.2-2.git48294d9.el7 extras
docker-latest.x86_64 1.13.1-58.git87f2fab.el7.centos
docker-latest-logrotate.x86_64 1.13.1-58.git87f2fab.el7.centos
docker-latest-v1.10-migrator.x86_64 1.13.1-58.git87f2fab.el7.centos
docker-logrotate.x86_64 2:1.13.1-209.git7d71120.el7.centos
docker-lvm-plugin.x86_64 2:1.13.1-209.git7d71120.el7.centos
docker-novolume-plugin.x86_64 2:1.13.1-209.git7d71120.el7.centos
docker-registry.x86_64 0.9.1-7.el7 extras
docker-scan-plugin.x86_64 0.23.0-3.el7 docker-ce-stable
docker-v1.10-migrator.x86_64 2:1.13.1-209.git7d71120.el7.centos
pcp-pmda-docker.x86_64 4.3.2-13.el7_9 updates
podman-docker.noarch 1.6.4-36.el7_9 extras
python-docker-py.noarch 1:1.10.6-11.el7 extras
python-docker-pycreds.noarch 1:0.3.0-11.el7 extras
[root@docker yum.repos.d]#
进行安装docker社区版：
[root@docker yum.repos.d]# yum install docker-ce.x86_64 -y
设置开机自启：
[root@docker yum.repos.d]# systemctl enable docker
Created symlink from /etc/systemd/system/multi-user.target.wants/docker.service to /usr/lib/systemd/system/docker.service.
[root@docker yum.repos.d]#
安装更新日志系统文件（否则可能会报错）
[root@docker ~]# yum install xfsprogs -y
已加载插件：fastestmirror
Loading mirror speeds from cached hostfile
* base: mirrors.ustc.edu.cn
* extras: mirrors.ustc.edu.cn
* updates: mirrors.ustc.edu.cn
软件包 xfsprogs-4.5.0-22.el7.x86_64 已安装并且是最新版本
无须任何处理
[root@docker ~]#
启动docker：
[root@docker ~]# systemctl restart docker
查看docker服务启动情况：
[root@docker ~]# ps -ef | grep docker
root 2073 1 0 12:26 ? 00:00:00 /usr/bin/dockerd -H fd:// --containerd=/run/containerd/containerd.sock
root 2198 1752 0 12:28 pts/0 00:00:00 grep --color=auto docker
[root@docker ~]#正常启动
//////////////////////
[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 五 2023-02-03 12:26:52 CST; 1min 46s ago
Docs: https://docs.docker.com
Main PID: 2073 (dockerd)
Tasks: 7
Memory: 100.7M
CGroup: /system.slice/docker.service
└─2073 /usr/bin/dockerd -H fd:// --containerd=/run/containerd/containerd.sock
2月 03 12:26:52 docker dockerd[2073]: time="2023-02-03T12:26:52.584554775+08:00" level=info msg="[core] [Channel #4 SubCh...le=grpc
2月 03 12:26:52 docker dockerd[2073]: time="2023-02-03T12:26:52.584592507+08:00" level=info msg="[core] [Channel #4] Chan...le=grpc
2月 03 12:26:52 docker dockerd[2073]: time="2023-02-03T12:26:52.597022989+08:00" level=info msg="Loading containers: start."
2月 03 12:26:52 docker dockerd[2073]: time="2023-02-03T12:26:52.725787229+08:00" level=info msg="Default bridge (docker0)...ddress"
2月 03 12:26:52 docker dockerd[2073]: time="2023-02-03T12:26:52.777153908+08:00" level=info msg="Loading containers: done."
2月 03 12:26:52 docker dockerd[2073]: time="2023-02-03T12:26:52.808877009+08:00" level=info msg="Docker daemon" commit=d7...=23.0.0
2月 03 12:26:52 docker dockerd[2073]: time="2023-02-03T12:26:52.808971789+08:00" level=info msg="Daemon has completed ini...zation"
2月 03 12:26:52 docker systemd[1]: Started Docker Application Container Engine.
2月 03 12:26:52 docker dockerd[2073]: time="2023-02-03T12:26:52.822648772+08:00" level=info msg="[core] [Server #7] Serve...le=grpc
2月 03 12:26:52 docker dockerd[2073]: time="2023-02-03T12:26:52.841132066+08:00" level=info msg="API listen on /run/docker.sock"
Hint: Some lines were ellipsized, use -l to show in full.
[root@docker ~]#
查看docker的版本：
[root@docker ~]# docker version
Client: Docker Engine - Community
Version: 23.0.0
API version: 1.42
Go version: go1.19.5
Git commit: e92dd87
Built: Wed Feb 1 17:49:02 2023
OS/Arch: linux/amd64
Context: default
Server: Docker Engine - Community
Engine:
Version: 23.0.0
API version: 1.42 (minimum version 1.12)
Go version: go1.19.5
Git commit: d7573ab
Built: Wed Feb 1 17:46:49 2023
OS/Arch: linux/amd64
Experimental: false
containerd:
Version: 1.6.16
GitCommit: 31aa4358a36870b21a992d3ad2bef29e1d693bec
runc:
Version: 1.1.4
GitCommit: v1.1.4-0-g5fd4c4d
docker-init:
Version: 0.19.0
GitCommit: de40ad0
[root@docker ~]#
查看docker的详细信息：
[root@docker ~]# docker info
Client:
Context: default
Debug Mode: false
Plugins:
buildx: Docker Buildx (Docker Inc.)
Version: v0.10.2
Path: /usr/libexec/docker/cli-plugins/docker-buildx
compose: Docker Compose (Docker Inc.)
Version: v2.15.1
Path: /usr/libexec/docker/cli-plugins/docker-compose
scan: Docker Scan (Docker Inc.)
Version: v0.23.0
Path: /usr/libexec/docker/cli-plugins/docker-scan
Server:
Containers: 0
Running: 0
Paused: 0
Stopped: 0
Images: 0
Server Version: 23.0.0
Storage Driver: overlay2
Backing Filesystem: xfs
Supports d_type: true
Using metacopy: false
Native Overlay Diff: true
userxattr: false
Logging Driver: json-file
Cgroup Driver: cgroupfs
Cgroup Version: 1
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: io.containerd.runc.v2 runc
Default Runtime: runc
Init Binary: docker-init
containerd version: 31aa4358a36870b21a992d3ad2bef29e1d693bec
runc version: v1.1.4-0-g5fd4c4d
init version: de40ad0
Security Options:
seccomp
Profile: builtin
Kernel Version: 3.10.0-1160.el7.x86_64
Operating System: CentOS Linux 7 (Core)
OSType: linux
Architecture: x86_64
CPUs: 1
Total Memory: 972.3MiB
Name: docker
ID: ce24bf61-6e13-4004-988f-1777f98d9e74
Docker Root Dir: /var/lib/docker
Debug Mode: false
Registry: https://index.docker.io/v1/
Experimental: false
Insecure Registries:
127.0.0.0/8
Live Restore Enabled: false
[root@docker ~]#