Docker的部署-1

环境: Linux Centos-7.5 联网状态 (需要最少RHEL6.5以上版本,64位操作系统)
利用的yum源(阿里源): http://mirrors.aliyun.com/repo/Centos-7.repo

1、查看是否已经安装过docker

[root@python3 ~]# yum list installed | grep docker
docker.x86_64                             2:1.13.1-108.git4ef4b30.el7.centos
docker-client.x86_64                      2:1.13.1-108.git4ef4b30.el7.centos
docker-common.x86_64                      2:1.13.1-108.git4ef4b30.el7.centos

2、以上表示已经安装过，删除docker

[root@python3 ~]# yum remove -y docker.x86_64 && yum remove -y docker-client && yum remove -y docker-common

3.下载阿里Yum源到指定的位置

[root@python3 ~]# wget -O /etc/yum.repos.d/Centos-7.repo http://mirrors.aliyun.com/repo/Centos-7.repo

4.如果用上述命令报错,如下:

[root@python3 ~]# wget -O /etc/yum.repos.d/Centos-7.repo http://mirrors.aliyun.com/repo/Centos-7.repo
-bash: /usr/bin/wget: 没有那个文件或目录

解决办法:

[root@python3 ~]# yum -y install wget

安装wget,并执行下载yum源命令

5.查看yum源的安装包数量,确定是否正确

[root@python3 ~]# yum repolist
已加载插件：fastestmirror
Loading mirror speeds from cached hostfile
 * base: mirrors.aliyun.com
 * extras: mirrors.aliyun.com
 * updates: mirrors.aliyun.com
源标识                   源名称                                          状态
base/7/x86_64            CentOS-7 - Base - mirrors.aliyun.com            10,097
extras/7/x86_64          CentOS-7 - Extras - mirrors.aliyun.com             323
local_repo               CentOS-7 - Base                                  9,911
updates/7/x86_64         CentOS-7 - Updates - mirrors.aliyun.com          1,446
repolist: 21,777

6.用yum安装docker,自动解决依赖

[root@python3 ~]# yum -y install docker
.........

已安装:
  docker.x86_64 2:1.13.1-108.git4ef4b30.el7.centos                             

作为依赖被安装:
  docker-client.x86_64 2:1.13.1-108.git4ef4b30.el7.centos                      
  docker-common.x86_64 2:1.13.1-108.git4ef4b30.el7.centos

7.启动docker,并开机自启,确定docker是否安装成功,成功会形成docker0虚拟网卡

[root@python3 ~]# systemctl restart docker
[root@python3 ~]# systemctl enable docker
Created symlink from /etc/systemd/system/multi-user.target.wants/docker.service to /usr/lib/systemd/system/docker.service.
[root@python3 ~]# ifconfig
docker0: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500
        inet 172.17.0.1  netmask 255.255.0.0  broadcast 0.0.0.0
        ether 02:42:4e:eb:b1:77  txqueuelen 0  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 0  bytes 0 (0.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.1.11  netmask 255.255.255.0  broadcast 192.168.1.255
        ether 52:54:00:fd:7e:63  txqueuelen 1000  (Ethernet)
        RX packets 161342  bytes 174859557 (166.7 MiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 89253  bytes 154706996 (147.5 MiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
        inet 127.0.0.1  netmask 255.0.0.0
        inet6 ::1  prefixlen 128  scopeid 0x10<host>
        loop  txqueuelen 1000  (Local Loopback)
        RX packets 13714  bytes 130086976 (124.0 MiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 13714  bytes 130086976 (124.0 MiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

8.下载docker-centos镜像

[root@python3 ~]# docker pull centos
Using default tag: latest
Trying to pull repository docker.io/library/centos ... 
latest: Pulling from docker.io/library/centos
8a29a15cefae: Pull complete 
Digest: sha256:fe8d824220415eed5477b63addf40fb06c3b049404242b31982106ac204f6700
Status: Downloaded newer image for docker.io/centos:latest
[root@python3 ~]# docker images
REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE
docker.io/centos    latest              470671670cac        3 weeks ago         237 MB

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