centos7-linux安裝docker(離線方式)

1. 下載docker的安裝文件

https://download.docker.com/linux/static/stable/x86_64/

下載的是：docker-18.06.3-ce.tgz 這個壓縮文件

2. 將docker-18.06.3-ce.tgz文件上傳到centos7-linux系統上，用ftp工具上傳即可

3. 解壓

[root@localhost java]# tar -zxvf docker-18.06.3-ce.tgz

4. 將解壓出來的docker文件復制到 /usr/bin/ 目錄下

[root@localhost java]# cp docker/* /usr/bin/

5. 進入/etc/systemd/system/目錄,並創建docker.service文件

[root@localhost java]# cd /etc/systemd/system/
[root@localhost system]# touch docker.service

6. 打開docker.service文件,將以下內容復制

[root@localhost system]# vi docker.service

注意： --insecure-registry=192.168.200.128 此處改為你自己服務器ip

[Unit]
Description=Docker Application Container Engine
Documentation=https://docs.docker.com
After=network-online.target firewalld.service
Wants=network-online.target

[Service]
Type=notify
# the default is not to use systemd for cgroups because the delegate issues still
# exists and systemd currently does not support the cgroup feature set required
# for containers run by docker
ExecStart=/usr/bin/dockerd --selinux-enabled=false --insecure-registry=192.168.200.128
ExecReload=/bin/kill -s HUP $MAINPID
# Having non-zero Limit*s causes performance problems due to accounting overhead
# in the kernel. We recommend using cgroups to do container-local accounting.
LimitNOFILE=infinity
LimitNPROC=infinity
LimitCORE=infinity
# Uncomment TasksMax if your systemd version supports it.
# Only systemd 226 and above support this version.
#TasksMax=infinity
TimeoutStartSec=0
# set delegate yes so that systemd does not reset the cgroups of docker containers
Delegate=yes
# kill only the docker process, not all processes in the cgroup
KillMode=process
# restart the docker process if it exits prematurely
Restart=on-failure
StartLimitBurst=3
StartLimitInterval=60s

[Install]
WantedBy=multi-user.target

7. 給docker.service文件添加執行權限

[root@localhost system]# chmod 777 /etc/systemd/system/docker.service 

8. 重新加載配置文件（每次有修改docker.service文件時都要重新加載下）

[root@localhost system]# systemctl daemon-reload 

9. 啟動

[root@localhost system]# systemctl start docker

10. 設置開機啟動

[root@localhost system]# systemctl enable docker.service

11. 查看docker狀態

[root@localhost system]# systemctl status docker

出現下面這個界面就代表docker安裝成功。

12. 配置鏡像加速器,默認是到國外拉取鏡像速度慢,可以配置國內的鏡像如：阿里、網易等等。下面配置一下網易的鏡像加速器。打開docker的配置文件: /etc/docker/daemon.json文件：

[root@localhost docker]# vi /etc/docker/daemon.json

配置如下:

{"registry-mirrors": ["http://hub-mirror.c.163.com"]}

配置完后:wq保存配置並重啟docker 一定要重啟不然加速是不會生效的！！！

[root@localhost docker]# service docker restart

參考：https://www.cnblogs.com/kingsonfu/p/11576797.html