安装
升级内核
建议升级内核 ，以便使用新特性
在线安装
配置yum源
yum可用跳过
CentOS 7
rm -f /etc/yum.repos.d/*
curl -o /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
curl -o /etc/yum.repos.d/epel-7.repo http://mirrors.aliyun.com/repo/epel-7.repo
配置yum代理
宿主机可直接访问互联网情况跳过
配置代理
vi /etc/yum.conf
文件最后添加以下内容
proxy=http://username:password@host:port
- username: http代理账号
- password: http代理密码
- host: http代理主机（ip或域名）
- port: http代理端口
清理旧版本docker
yum remove docker -y \
docker-client \
docker-client-latest \
docker-common \
docker-latest \
docker-latest-logrotate \
docker-logrotate \
docker-selinux \
docker-engine-selinux \
docker-engine
rm -rf /etc/systemd/system/docker.service.d
rm -rf /var/lib/docker
rm -rf /var/run/docker
rm -rf /usr/local/docker
rm -rf /etc/docker
安装docker
以下安装方式：二选一
安装最新版
yum -y install yum-utils device-mapper-persistent-data lvm2
yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
yum makecache fast
yum -y install docker-ce
安装指定版本
查看可选版本
[root@localhost ~]# yum list docker-ce --showduplicates|sort -r
* updates: mirrors.aliyun.com
Loading mirror speeds from cached hostfile
Loaded plugins: fastestmirror
* extras: mirrors.aliyun.com
docker-ce.x86_64 3:20.10.7-3.el7 docker-ce-stable
docker-ce.x86_64 3:20.10.6-3.el7 docker-ce-stable
docker-ce.x86_64 3:20.10.5-3.el7 docker-ce-stable
docker-ce.x86_64 3:20.10.4-3.el7 docker-ce-stable
docker-ce.x86_64 3:20.10.3-3.el7 docker-ce-stable
docker-ce.x86_64 3:20.10.2-3.el7 docker-ce-stable
docker-ce.x86_64 3:20.10.1-3.el7 docker-ce-stable
docker-ce.x86_64 3:20.10.0-3.el7 docker-ce-stable
docker-ce.x86_64 3:19.03.9-3.el7 docker-ce-stable
docker-ce.x86_64 3:19.03.8-3.el7 docker-ce-stable
docker-ce.x86_64 3:19.03.7-3.el7 docker-ce-stable
docker-ce.x86_64 3:19.03.6-3.el7 docker-ce-stable
docker-ce.x86_64 3:19.03.5-3.el7 docker-ce-stable
docker-ce.x86_64 3:19.03.4-3.el7 docker-ce-stable
docker-ce.x86_64 3:19.03.3-3.el7 docker-ce-stable
docker-ce.x86_64 3:19.03.2-3.el7 docker-ce-stable
docker-ce.x86_64 3:19.03.15-3.el7 docker-ce-stable
docker-ce.x86_64 3:19.03.14-3.el7 docker-ce-stable
docker-ce.x86_64 3:19.03.1-3.el7 docker-ce-stable
docker-ce.x86_64 3:19.03.13-3.el7 docker-ce-stable
docker-ce.x86_64 3:19.03.12-3.el7 docker-ce-stable
docker-ce.x86_64 3:19.03.11-3.el7 docker-ce-stable
docker-ce.x86_64 3:19.03.10-3.el7 docker-ce-stable
docker-ce.x86_64 3:19.03.0-3.el7 docker-ce-stable
docker-ce.x86_64 3:18.09.9-3.el7 docker-ce-stable
docker-ce.x86_64 3:18.09.8-3.el7 docker-ce-stable
docker-ce.x86_64 3:18.09.7-3.el7 docker-ce-stable
docker-ce.x86_64 3:18.09.6-3.el7 docker-ce-stable
docker-ce.x86_64 3:18.09.5-3.el7 docker-ce-stable
docker-ce.x86_64 3:18.09.4-3.el7 docker-ce-stable
docker-ce.x86_64 3:18.09.3-3.el7 docker-ce-stable
docker-ce.x86_64 3:18.09.2-3.el7 docker-ce-stable
docker-ce.x86_64 3:18.09.1-3.el7 docker-ce-stable
docker-ce.x86_64 3:18.09.0-3.el7 docker-ce-stable
docker-ce.x86_64 18.06.3.ce-3.el7 docker-ce-stable
docker-ce.x86_64 18.06.2.ce-3.el7 docker-ce-stable
docker-ce.x86_64 18.06.1.ce-3.el7 docker-ce-stable
docker-ce.x86_64 18.06.0.ce-3.el7 docker-ce-stable
docker-ce.x86_64 18.03.1.ce-1.el7.centos docker-ce-stable
docker-ce.x86_64 18.03.0.ce-1.el7.centos docker-ce-stable
docker-ce.x86_64 17.12.1.ce-1.el7.centos docker-ce-stable
docker-ce.x86_64 17.12.0.ce-1.el7.centos docker-ce-stable
docker-ce.x86_64 17.09.1.ce-1.el7.centos docker-ce-stable
docker-ce.x86_64 17.09.0.ce-1.el7.centos docker-ce-stable
docker-ce.x86_64 17.06.2.ce-1.el7.centos docker-ce-stable
docker-ce.x86_64 17.06.1.ce-1.el7.centos docker-ce-stable
docker-ce.x86_64 17.06.0.ce-1.el7.centos docker-ce-stable
docker-ce.x86_64 17.03.3.ce-1.el7 docker-ce-stable
docker-ce.x86_64 17.03.2.ce-1.el7.centos docker-ce-stable
docker-ce.x86_64 17.03.1.ce-1.el7.centos docker-ce-stable
docker-ce.x86_64 17.03.0.ce-1.el7.centos docker-ce-stable
安装指定版本
```bash
yum install -y docker-ce-19.03.15-3.el7
配置docker
关闭selinux
setenforce 0
sed -i "s#SELINUX=enforcing#SELINUX=disabled#g" /etc/selinux/config
调整系统参数
sed -i ':a;$!{N;ba};s@# docker limit BEGIN.*# docker limit END@@' /etc/security/limits.conf
cat <<EOF >> /etc/security/limits.conf
# docker limit BEGIN
* soft nofile 65535
* hard nofile 65535
* soft nproc 65535
* hard nproc 65535
# docker limit END
EOF
sed -i "/user.max_user_namespaces/d" /etc/sysctl.conf
echo "user.max_user_namespaces=15000" >> /etc/sysctl.conf
sysctl -p
ulimit -u 65535
ulimit -n 65535
echo 'net.ipv4.ip_forward = 1' >> /etc/sysctl.conf
echo 'net.bridge.bridge-nf-call-arptables = 1' >> /etc/sysctl.conf
echo 'net.bridge.bridge-nf-call-ip6tables = 1' >> /etc/sysctl.conf
echo 'net.bridge.bridge-nf-call-iptables = 1' >> /etc/sysctl.conf
echo 'vm.max_map_count = 262144' >> /etc/sysctl.conf
echo 'vm.swappiness = 1' >> /etc/sysctl.conf
echo 'fs.inotify.max_user_instances = 524288' >> /etc/sysctl.conf
#See https://imroc.io/posts/kubernetes/troubleshooting-with-kubernetes-network/
sed -r -i "s@#{0,}?net.ipv4.tcp_tw_recycle ?= ?(0|1)@net.ipv4.tcp_tw_recycle = 0@g" /etc/sysctl.conf
sed -r -i "s@#{0,}?net.ipv4.ip_forward ?= ?(0|1)@net.ipv4.ip_forward = 1@g" /etc/sysctl.conf
sed -r -i "s@#{0,}?net.bridge.bridge-nf-call-arptables ?= ?(0|1)@net.bridge.bridge-nf-call-arptables = 1@g" /etc/sysctl.conf
sed -r -i "s@#{0,}?net.bridge.bridge-nf-call-ip6tables ?= ?(0|1)@net.bridge.bridge-nf-call-ip6tables = 1@g" /etc/sysctl.conf
sed -r -i "s@#{0,}?net.bridge.bridge-nf-call-iptables ?= ?(0|1)@net.bridge.bridge-nf-call-iptables = 1@g" /etc/sysctl.conf
sed -r -i "s@#{0,}?vm.max_map_count ?= ?(0|1)@vm.max_map_count = 262144@g" /etc/sysctl.conf
sed -r -i "s@#{0,}?vm.swappiness ?= ?(0|1)@vm.swappiness = 1@g" /etc/sysctl.conf
sed -r -i "s@#{0,}?fs.inotify.max_user_instances ?= ?(0|1)@fs.inotify.max_user_instances = 524288@g" /etc/sysctl.conf
awk ' !x[$0]++{print > "/etc/sysctl.conf"}' /etc/sysctl.conf
配置
docker daemon
mkdir -p /etc/docker
cat <<EOF > /etc/docker/daemon.json
{
"log-opts": {
"max-size": "10m",
"max-file":"3"
},
"userland-proxy": false,
"live-restore": true,
"default-ulimits": {
"nofile": {
"Hard": 65535,
"Name": "nofile",
"Soft": 65535
}
},
"default-address-pools": [
{
"base": "172.80.0.0/16",
"size": 24
},
{
"base": "172.90.0.0/16",
"size": 24
}
],
"no-new-privileges": false,
"default-gateway": "",
"default-gateway-v6": "",
"default-runtime": "runc",
"default-shm-size": "64M",
"exec-opts": ["native.cgroupdriver=systemd"]
}
EOF
配置阿里云加速
可选
调整
/etc/docker/daemon.json
添加如下内容
"registry-mirrors": ["https://jz73200c.mirror.aliyuncs.com"]
重启
sudo systemctl daemon-reload
sudo systemctl restart docker
启动
systemctl daemon-reload
systemctl enable docker --now