离线安装docker

一、基础环境

1、下载docker:https://download.docker.com/linux/static/stable/x86_64/
2、网络正常得情况下直接yum install docker-ce

二、Docker安装

1、将下载好的docker上传到服务器上
2、解压

tar -xvf docker-18.06.1-ce.tgz

3、将解压出来的docker文件内容拷贝到 /usr/bin/ 目录下

cp docker/* /usr/bin/

4、将docker注册为service

vim /etc/systemd/system/docker.service

将下列配置加到docker.service中并保存:

[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

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

5、启动

chmod +x /etc/systemd/system/docker.service  #添加文件权限并启动docker

systemctl daemon-reload   #重载unit配置文件

systemctl start docker    #启动Docker

systemctl enable docker.service  #设置开机自启

6、验证

systemctl status docker   #查看Docker状态

docker -v    #查看Docker版本

docker load导入镜像报错：

open /opt/docker/installation/docker/tmp/docker-import-429515006/docker-images/json: no such file or director

原因：下载的tar包缺少一些json文件

解决办法：

cat mysql5.7.19.tar | docker import - mysql5.7.19

docker images就可以看到已经成功导入了

开通docker2375端口

1、新建daemon,json文件

vi /etc/docker/daemon.json

2、保存配置

{
"log-driver":"json-file",
"log-opts": {"max-size":"500m", "max-file":"1"},
"hosts": ["unix:///var/run/docker.sock", "tcp://0.0.0.0:2375"]
}

3、重启docker守护进程

# systemctl daemon-reload

# systemctl restart docker

docker日志迁移方案

1、停止docker服务

systemctl stop docker

2、创建存放docker的日志文件
分别在此路径/opt/docker

mkdir images
mkdir installation

3、vi clean_docker_logs.sh

#!/bin/sh 

echo "======== start clean docker containers logs ========"  

logs=$(find /var/lib/docker/containers/ -name *-json.log)  

for log in $logs  
        do  
                echo "clean logs : $log"  
                cat /dev/null > $log  
        done  

echo "======== end clean docker containers logs ========"

4、将原docker下的文件拷贝到新创建的目录下

cp -a /var/lib/docker /opt/docker/installation/docker

5、移动文件

mv -u /var/lib/docker /var/lib/docker.bak

6、建立软连接

ln -fs /opt/docker/installation/docker /var/lib/docker

7、重启docker

systemctl start docker.service