安装docker

centos7.2下安装docker1.13.1或者安装17.03.2

关闭selinux

setenforce 0
sed -ri 's/^(SELINUX=).*/1disabled/' /etc/selinux/config

　　

开启防火墙:

yum install firewalld -y
systemctl start firewalld && systemctl enable firewalld && systemctl stop iptables && systemctl disable iptables
#开启相应的端口
firewall-cmd --zone=public --add-port=8000-10200/tcp --permanent
firewall-cmd --zone=public --add-port=5000/tcp --permanent
firewall-cmd --zone=public --add-port=2375/tcp --permanent
firewall-cmd --reload

　　

　　

设置IPV4转发

vim /etc/sysctl.conf
#开启转发
net.ipv4.ip_forward = 1
net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1

#端口范围
net.ipv4.ip_local_port_range = 2048 65535
#监听队列长度
net.core.somaxconn = 4096
#网络接口接收数据包的速率比内核处理包的速率快时，允许送到队列的数据包的最大数目
net.core.netdev_max_backlog = 65000
#SYN_RECV状态队列长度
net.ipv4.tcp_max_syn_backlog = 8196


执行如下命令生效： 
sysctl -p

　　

系统资源修改:

vim /etc/security/limits.d/10-nproc.conf
*         soft       nproc     20480
*         hard       nproc     20480
root      soft       nproc     unlimited
root      hard       nproc     unlimited
*         soft       nofile    1048576
*         hard       nofile    1048576

　　

一  yum安装docker, 默认的版本是1.13.1，比以往的要高，以前都是1.12.3或者1.12.6

yum install docker -y && systemctl start docker && systemctl stop docker

　　

使用devicemapper存储驱动程序配置Docker

https://docs.docker.com/storage/storagedriver/device-mapper-driver/#configure-docker-with-the-devicemapper-storage-driver

修改docker配置

a. vim /etc/docker/daemon.json
{
    "storage-driver": "devicemapper",
    "storage-opts": [
    "dm.thinpooldev=/dev/mapper/docker-thinpool",
    "dm.use_deferred_removal=true",
    "dm.use_deferred_deletion=true"
    ],
    "registry-mirrors": [
        "http://f2d6cb40.m.daocloud.io",
        "https://registry.docker-cn.com",
        "http://ef017c13.m.daocloud.io",
        "http://74ecfe5d.m.daocloud.io",
        "http://e1c83636.m.daocloud.io"
    ],
    "insecure-registries": [
        "ip:5000",
        "ip:5000"
    ],
    "live-restore": true,
    "graph": "/opt/docker",
    "hosts": [
        "unix:///var/run/docker.sock",
        "tcp://0.0.0.0:2375"
    ]
}


b.vim /etc/sysconfig/docker-storage-setup
#STORAGE_DRIVER=overlay2
CONTAINER_THINPOOL=docker-pool


c.vim /etc/sysconfig/docker-storage
DOCKER_STORAGE_OPTIONS=

　　

　　　　　

启动docker:

systemctl daemon-reload  && systemctl restart docker && systemctl enable docker

　　

二 通过阿里云的方式安装docker-ce-17.03.2.ce

# step 0: 删除系统里面的docker组件
yum remove docker docker-common container-selinux docker-selinux docker-engine docker-engine-selinux
# step 1: 安装必要的一些系统工具
sudo yum install -y yum-utils device-mapper-persistent-data lvm2 
# Step 2: 添加软件源信息
sudo yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
# Step 3: 更新并安装 Docker-CE
sudo yum makecache fast
yum install -y  --setopt=obsoletes=0 docker-ce-17.03.2.ce docker-ce-selinux-17.03.2.ce
# Step 4: 开启Docker服务
sudo systemctl start docker

　

使用devicemapper存储驱动程序配置Docker

https://docs.docker.com/storage/storagedriver/device-mapper-driver/#configure-docker-with-the-devicemapper-storage-driver

修改docker配置

vim /etc/docker/daemon.json

{
    "storage-driver": "devicemapper",
    "storage-opts": [
        "dm.thinpooldev=/dev/mapper/docker-thinpool",
        "dm.use_deferred_removal=true",
        "dm.use_deferred_deletion=true"
    ],
    "registry-mirrors": [
        "http://f2d6cb40.m.daocloud.io",
        "http://ef017c13.m.daocloud.io",
        "http://74ecfe5d.m.daocloud.io",
        "http://e1c83636.m.daocloud.io"
    ],
    "insecure-registries": [
        "ip:5000",
        "harbor.xxx.com"
    ],
    "live-restore": true,
    "graph": "/opt/docker",
    "hosts": [
        "unix:///var/run/docker.sock",
        "tcp://0.0.0.0:2375"
    ],
    "selinux-enabled": false,
    "userland-proxy": false,
    "exec-opts": [
        "native.cgroupdriver=systemd"
    ]
}

　　

启动docker:

systemctl daemon-reload  && systemctl restart docker && systemctl enable docker