docker安装

一、下载rpm包

Docker–离线安装以及本地yum源构建
docker 离线安装包下载
通过命令行，进行下载安装包到/docker/dockerRpm目录下。
yum install --downloadonly --downloaddir=/docker/dockerRpm docker

二、下载tar.gz包安装

linux如何成功地离线安装docker

下载docker-18.03.1-ce.tgz

其他方式安装

1. centOS官网方式安装docker

https://docs.docker.com/install/linux/docker-ce/centos/#install-from-a-package

2.菜鸟教程安装

http://www.runoob.com/docker/centos-docker-install.html

安装脚本样例

只供参考,脚本出处 https://github.com/liumiaocn/easypack/blob/master/docker/install-docker.sh

#!/bin/sh

usage(){
  echo "Usage: $0 FILE_NAME_DOCKER_CE_TAR_GZ"
  echo "       $0 docker-17.09.0-ce.tgz"
  echo "Get docker-ce binary from: https://download.docker.com/linux/static/stable/x86_64/"
  echo "eg: wget https://download.docker.com/linux/static/stable/x86_64/docker-17.09.0-ce.tgz"
  echo ""
}
SYSTEMDDIR=/usr/lib/systemd/system
SERVICEFILE=docker.service
DOCKERDIR=/usr/bin
DOCKERBIN=docker
SERVICENAME=docker

if [ $# -ne 1 ]; then
  usage
  exit 1
else
  FILETARGZ="$1"
fi

if [ ! -f ${FILETARGZ} ]; then
  echo "Docker binary tgz files does not exist, please check it"
  echo "Get docker-ce binary from: https://download.docker.com/linux/static/stable/x86_64/"
  echo "eg: wget https://download.docker.com/linux/static/stable/x86_64/docker-17.09.0-ce.tgz"
  exit 1
fi

echo "##unzip : tar xvpf ${FILETARGZ}"
tar xvpf ${FILETARGZ}
echo

echo "##binary : ${DOCKERBIN} copy to ${DOCKERDIR}"
cp -p ${DOCKERBIN}/* ${DOCKERDIR} >/dev/null 2>&1
which ${DOCKERBIN}

echo "##systemd service: ${SERVICEFILE}"
echo "##docker.service: create docker systemd file"
cat >${SYSTEMDDIR}/${SERVICEFILE} <<EOF
[Unit]
Description=Docker Application Container Engine
Documentation=http://docs.docker.com
After=network.target docker.socket
[Service]
Type=notify
EnvironmentFile=-/run/flannel/docker
WorkingDirectory=/usr/local/bin
ExecStart=/usr/bin/dockerd \
                -H tcp://0.0.0.0:4243 \
                -H unix:///var/run/docker.sock \
                --selinux-enabled=false \
                --log-opt max-size=1g
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=on-failure
[Install]
WantedBy=multi-user.target
EOF

echo ""

systemctl daemon-reload
echo "##Service status: ${SERVICENAME}"
systemctl status ${SERVICENAME}
echo "##Service restart: ${SERVICENAME}"
systemctl restart ${SERVICENAME}
echo "##Service status: ${SERVICENAME}"
systemctl status ${SERVICENAME}

echo "##Service enabled: ${SERVICENAME}"
systemctl enable ${SERVICENAME}

echo "## docker version"
docker version

三、Yum安装指定版本docker

安装docker

# 安装一些必要的系统工具
sudo yum install -y yum-utils device-mapper-persistent-data lvm2
#添加软件源信息
sudo yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
# 更新 yum 缓存
yum makecache fast

#安装docker-ce
sudo yum -y install docker-ce

# 启动 Docker 后台服务
sudo systemctl start docker
# 设置开机启动
sudo systemctl enable docker

设置docker镜像

如果在daemon.json文件中进行配置，需要docker版本高于1.12.6(在这个版本上不生效，1.13.1以上是生效的)

[root@localhost dockerFiles]# cat /etc/docker/daemon.json
{
  "registry-mirrors": ["https://registry.docker-cn.com","https://docker.mirrors.aliyuncs.com","http://hub-mirror.c.163.com"],
  "insecure-registry": ["192.168.0.0/16"]
}

https://dockerhub.azk8s.cn", “https://docker.mirrors.ustc.edu.cn”, “https://registry.docker-cn.com”,“https://docker.mirrors.aliyuncs.com”, “http://hub-mirror.c.163.com”

cat /etc/docker/daemon.json

解决 Client.Timeout exceeded while awaiting headers或Docker Pulling fs layer net/http: TLS handshake的方案 https://blog.youkuaiyun.com/u010268820/article/details/87388054

设置阿里yum镜像源

mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup
wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo

docker常用命令

开机启动docker

systemctl enable

打开2375端口

2376是https端口 需要设置证书等，在其他文档中

文件 /usr/lib/systemd/system/docker.service 中添加

ExecStart=/usr/bin/dockerd -H fd:// --containerd=/run/containerd/containerd.sock

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

ExecStart=/usr/bin/dockerd -H fd:// --containerd=/run/containerd/containerd.sock -H tcp://0.0.0.0:2375  -H unix:///var/run/docker.sock

执行命令使其生效

 systemctl daemon-reload && service docker restart