docker-ce安装

一、yum安装指定版本docker-ce

docker RPM包官方网址：https://download.docker.com/linux/centos/7/x86_64/stable/Packages/
docker tar包官方网址：https://download.docker.com/linux/static/stable/x86_64/

1、配置本地以及网络yum源

#配置本地yum源
cd /etc/yum.repos.d/
#判断光盘是否挂载
[ -d /media/cdrom ] || mkdir /media/cdrom
mount | grep  sr0 &> /dev/null
[ $? -eq 0 ] || mount /dev/sr0 /media/cdrom
echo "光盘已挂载"
#安装使用包
yum -y install wget net-tools psmisc gcc gcc-c++ make unzip which
mv CentOS-Base.repo CentOS-Base.repo.bak
#配置网络yum源
[ -f CentOS7-Base-163.repo ] || wget http://mirrors.163.com/.help/CentOS7-Base-163.repo
[ -f Centos-7.repo ] || wget http://mirrors.aliyun.com/repo/Centos-7.repo
[ -f epel-testing.repo ] || wget http://mirrors.aliyun.com/repo/epel-testing.repo
[ -f epel-7.repo ] || wget http://mirrors.aliyun.com/repo/epel-7.repo
[ -f epel.repo ] || wget http://mirrors.aliyun.com/repo/epel.repo
yum clean all && yum makecache
yum install -y yum-utils

2、配置docker源以及yum安装

• 卸载旧版本

yum remove docker \
	docker-client \
	docker-client-latest \
	docker-common \
	docker-latest \
	docker-latest-logrotate \
	docker-logrotate \
	docker-engine

• 安装所需软件包

#yum-utils提供了yum-config-manager 效用，并device-mapper-persistent-data和lvm2由需要 devicemapper 存储驱动程序
yum install -y yum-utils
yum install -y device-mapper-persistent-data  lvm2

• 配置docker源

yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
yum clean all
yum makecache

• 查询可安装版本

yum list docker-ce --showduplicates | sort -r

• 安装docker-ce-19.03.5

yum -y install docker-ce-19.03.5 docker-ce-cli-19.03.5 containerd.io

• 启动docker

systemctl start docker

• 检查版本

docker version

Client: Docker Engine - Community
 Version:           19.03.5
 API version:       1.40
 Go version:        go1.12.12
 Git commit:        633a0ea
 Built:             Wed Nov 13 07:25:41 2019
 OS/Arch:           linux/amd64
 Experimental:      false
Server: Docker Engine - Community
 Engine:
  Version:          19.03.5
  API version:      1.40 (minimum version 1.12)
  Go version:       go1.12.12
  Git commit:       633a0ea
  Built:            Wed Nov 13 07:24:18 2019
  OS/Arch:          linux/amd64
  Experimental:     false
 containerd:
  Version:          1.4.3
  GitCommit:        269548fa27e0089a8b8278fc4fc781d7f65a939b
 runc:
  Version:          1.0.0-rc92
  GitCommit:        ff819c7e9184c13b7c2607fe6c30ae19403a7aff
 docker-init:
  Version:          0.18.0
  GitCommit:        fec3683

3、配置阿里云加速

[root@localhost images]# cat /etc/docker/daemon.json 
{ 
	"data-root": "/data/docker",
	"exec-opts": ["native.cgroupdriver=systemd"],
	"registry-mirrors": ["http://hub-mirror.c.163.com"], #国内镜像源
	"insecure-registries": ["docker.erick.com:5000"], #私有仓库
	"log-driver": "json-file",
	"log-opts": {
                "max-size": "100m", #每个容器日志文件大小
                "max-file": "10" #最多生成的文件数
             }
}

二、二进制安装docker

1.下载docker tar包

wget https://download.docker.com/linux/static/stable/x86_64/docker-19.03.3.tgz

2.解压

tar xf docker-19.03.3.tgz
cd docker
ll ./
[root@localhost docker]# ll
总用量 204696
-rwxr-xr-x 1 cka cka 34625816 10月  8 2019 containerd
-rwxr-xr-x 1 cka cka  6116160 10月  8 2019 containerd-shim
-rwxr-xr-x 1 cka cka 18850136 10月  8 2019 ctr
-rwxr-xr-x 1 cka cka 65641747 10月  8 2019 docker
-rwxr-xr-x 1 cka cka 72067152 10月  8 2019 dockerd
-rwxr-xr-x 1 cka cka   764144 10月  8 2019 docker-init
-rwxr-xr-x 1 cka cka  2877369 10月  8 2019 docker-proxy
-rwxr-xr-x 1 cka cka  8649800 10月  8 2019 runc

3.拷贝命令到/usr/bin/

cp docker/* /usr/bin/
PS:因为启动文件中的命令取自/usr/bin

**查看docker版本**
**docker version**
[root@localhost ~]# docker version
Client: Docker Engine - Community
 Version:           19.03.3
 API version:       1.40
 Go version:        go1.12.10
 Git commit:        a872fc2f86
 Built:             Tue Oct  8 00:54:52 2019
 OS/Arch:           linux/amd64
 Experimental:      false
**Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?**
表示找不到docker.sock，docker服务未启动

4.准备service启动文件

vim /lib/systemd/system/docker.service

[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 -H tcp://0.0.0.0:2375 -H unix://var/run/docker.sock
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docker

>chmod +x /lib/systemd/system/docker.service
systemctl daemon-reload   //重载systemd下 xxx.service文件
systemctl start docker       //启动Docker
systemctl enable docker.service   //设置开机自启

• 查看版本

[root@localhost ~] docker version
Client: Docker Engine - Community
 Version:           19.03.3
 API version:       1.40
 Go version:        go1.12.10
 Git commit:        a872fc2f86
 Built:             Tue Oct  8 00:54:52 2019
 OS/Arch:           linux/amd64
 Experimental:      false

Server: Docker Engine - Community
 Engine:
  Version:          19.03.3
  API version:      1.40 (minimum version 1.12)
  Go version:       go1.12.10
  Git commit:       a872fc2f86
  Built:            Tue Oct  8 01:01:20 2019
  OS/Arch:          linux/amd64
  Experimental:     false
 containerd:
  Version:          v1.2.10
  GitCommit:        b34a5c8af56e510852c35414db4c1f4fa6172339
 runc:
  Version:          1.0.0-rc8+dev
  GitCommit:        3e425f80a8c931f88e6d94a8c831b9d5aa481657
 docker-init:
  Version:          0.18.0
  GitCommit:        fec3683

二进制安装脚本

#!/bin/bash
set -x
tar_name=docker-19.03.3.tgz
#var
unamer=`uname -r |cut -d'.' -f1-2`
 
#kernel 3.10+
if [[ $unamer -lt 3.10 ]];then
    echo "the linux kernel too lower" && exit 8
fi
 
#setup
tar xf  $tar_name && mv docker/* /usr/bin/ && rm -rf docker*
 
#systemd config
cat >/lib/systemd/system/docker.service <<-EOF
[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 -H tcp://0.0.0.0:2375 -H unix://var/run/docker.sock
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
EOF


#start
chmod +x /etc/systemd/system/docker.service
systemctl daemon-reload && systemctl start docker && systemctl enable docker.service   
 
#look docker.service
systemctl status docker && docker -v