Centos7中离线安装DockerCE最新版

Centos7中离线安装DockerCE最新版
来源地址：https://www.cnblogs.com/songxingzhu/p/10651197.html
一、简述
　　离线在Centos7中部署DockerCE。
二、步骤
（1）在有外网的计算A上执行：
新建一台CentOS7 mini虚拟机，联网下载所有所需的rpm包和其依赖
1、配置安装源存放路径

mkdir -p /root/docker-ce-local && cd /root/docker-ce-local

2、获取createrepo安装包

yum install --downloadonly --downloaddir=/root/docker-ce-local createrepo

3、获取系统更新yum源

yum update --downloadonly --downloaddir=/root/docker-ce-local

4、卸载旧版本

yum remove docker docker-common docker-selinux docker-engine

5、获取docker-ce所需依赖

yum install --downloadonly --downloaddir=/root/docker-ce-local yum-utils device-mapper-persistent-data lvm2
yum -y install yum-utils      //安装包括yum-config-manager工具

6、设置docker-ce在线存储库

yum -y install yum-utils
yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo

7、更新yum源索引

yum makecache fast

8、获取docker-ce及相关rpm安装源

yum install --downloadonly --downloaddir=/root/docker-ce-local docker-ce

9、查看安装时docker所需要的密钥并下载

more /etc/yum.repos.d/docker-ce.repo
cd /root/docker-ce-local/
wget https://download.docker.com/linux/centos/gpg

10、先下载，后安装createrepo

yum install --downloadonly --downloaddir=/root/docker-ce-local  createrepo
yum install --downloadonly --downloaddir=/root/docker-ce-local deltarpm libxml2-python python-deltarpm
yum install createrepo

11、初始化源文件的repodata

createrepo -pdo /root/docker-ce-local /root/docker-ce-local
createrepo --update /root/docker-ce-local

12、将文件夹打包为yum-local.tgz

cd /root
tar -zcvf centos-local.tgz docker-ce-local/

（2）在目标计算机B上执行：

13、在目标计算机上将tgz包上传至/root路径下，并解压centos-local.tgz文件

cd /root
tar -xvzf centos-local.tgz

14、安装createrepo

cd /root/docker-ce-local

下载libxml2-2.9.1-6.el7_2.3.x86_64.rpm 地址：
https://centos.pkgs.org/7/centos-x86_64/libxml2-2.9.1-6.el7_2.3.x86_64.rpm.html

rpm -qa | grep libxml2 | xargs rpm -e --nodeps  
rpm -qa | grep deltarpm| xargs rpm -e --nodeps  
rpm -ivh  deltarpm-3.6-3.el7.x86_64.rpm  
rpm -ivh  python-deltarpm-3.6-3.el7.x86_64.rpm  
rpm -ivh  libxml2-2.9.1-6.el7_2.3.x86_64.rpm  
rpm -ivh  libxml2-python-2.9.1-6.el7_2.3.x86_64.rpm  
rpm -ivh  createrepo-0.9.9-28.el7.noarch.rpm

# rpm -ivh createrepo-0.9.9-28.el7.noarch.rpm
//注：createrepo版本可能不一样，根据自己下载的包的版本安装

15、备份安装源　　将所有的安装源移动到备份文件夹中

cd /etc/yum.repos.d/
mkdir repobak
mv CentOS* repobak/

16、新增docker-ce-local.repo源文件，写入以下内容

# vi /etc/yum.repos.d/docker-ce-local.repo
[docker-ce-local]
name=Local Yum
baseurl=file:///root/docker-ce-local/
gpgcheck=1
gpgkey=file:///root/docker-ce-local/gpg
enabled=1

17、生成源索引及缓存

createrepo /root/docker-ce-local
yum makecache

18、安装docker-ce

yum install docker-ce
//如果报错，则添加--nogpgcheck跳过公钥检查
yum install docker-ce   --nogpgcheck

19、启动并测试

systemctl start docker.service 
docker version

//验证结果

[root@node114 docker-ce-local]# systemctl start docker.service
[root@node114 docker-ce-local]# docker version
Client:
 Version:           18.09.6
 API version:       1.39
 Go version:        go1.10.8
 Git commit:        481bc77156
 Built:             Sat May  4 02:34:58 2019
 OS/Arch:           linux/amd64
 Experimental:      false

Server: Docker Engine - Community
 Engine:
  Version:          18.09.6
  API version:      1.39 (minimum version 1.12)
  Go version:       go1.10.8
  Git commit:       481bc77
  Built:            Sat May  4 02:02:43 2019
  OS/Arch:          linux/amd64
  Experimental:     false
[root@node114 docker-ce-local]#

这是下载的离线包文件centos-local.tgz
链接：https://pan.baidu.com/s/1KkD2pSasVEuszI1r2I4TLA
提取码：y4u3

问题集：

1 重启计算机后用docker version报错问题
报错内容如下：
Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?
解决办法：service docker restart
原因可能是上一次没有正常退出docker，所以docker没有正常启动，在相应的/var/run/路径下找不到docker进程。

2关机后或容器关闭后重启容器的方法：
数据还在原处
通过 docker ps -a 看到关闭的容器
docker start your_container_ID

---

CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS                    PORTS               NAMES
52ecb0aa3b1b        supermap/iportal    "/bin/sh -c /opt/run…"   3 weeks ago         Exited (137) 2 days ago                       iportalserver
9f1c40dd51cf        supermap/iserver    "/bin/sh -c /opt/run…"   3 weeks ago         Exited (137) 2 days ago                       supermapiserver
712a3f0e5035        8ef3                "container-entrypoin…"   3 weeks ago         Exited (0) 2 days ago                         MYSQL56docker
5c58116a7eb7        nginx               "nginx -g 'daemon of…"   3 weeks ago         Exited (0) 2 days ago                         test

[root@node114 ~]# docker start 712a3f0e5035
712a3f0e5035
[root@node114 ~]# docker ps -a
CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS                    PORTS                    NAMES
52ecb0aa3b1b        supermap/iportal    "/bin/sh -c /opt/run…"   3 weeks ago         Exited (137) 2 days ago                            iportalserver
9f1c40dd51cf        supermap/iserver    "/bin/sh -c /opt/run…"   3 weeks ago         Exited (137) 2 days ago                            supermapiserver
712a3f0e5035        8ef3                "container-entrypoin…"   3 weeks ago         Up 6 seconds              0.0.0.0:3307->3306/tcp   MYSQL56docker
5c58116a7eb7        nginx               "nginx -g 'daemon of…"   3 weeks ago         Exited (0) 2 days ago                              test