DC/OS部署前准备

1. 硬件环境准备

节点	系统	配置	IP
boot	centos7.4	1核1G	192.168.22.190
master-01	centos7.4	1核1G	192.168.22.191
node-01	centos7.4	2核2G	192.168.22.192
node-02	centos7.4	2核2G	192.168.22.193

2. 系统环境准备（所有节点上操作）

关闭SELINUX

# sed -i s/SELINUX=enforcing/SELINUX=permissive/g /etc/selinux/config
# reboot

关闭防火墙

# systemctl stop firewalld && systemctl disable firewalld

更新系统到最新版本

# yum update -y

启用NTP服务

# yum install -y ntp
# systemctl start ntpd && sudo systemctl enable ntpd

安装所需的软件

# yum install -y tar xz unzip curl ipset

创建nogroup组

# groupadd nogroup

SSH密钥配置（boot节点上操作）

# ssh-keygen
# cd /root/.ssh
# echo id_rsa.pub > authorized_keys
# chmod 400 authorized_keys
# scp -r /root/.ssh 192.168.22.191/root/
# scp -r /root/.ssh 192.168.22.192/root/
# scp -r /root/.ssh 192.168.22.193/root/

代理配置

方便后面下载DC/OS安装脚本、软件等。

# vi /etc/profile
# 末尾增加以下两行 
export http_proxy=192.168.22.13:1080
export https_proxy=192.168.22.13:1080
# source /etc/profile

启用OverlayFS

# tee /etc/modules-load.d/overlay.conf <<-'EOF'
overlay
EOF

重启后检查是否开启

# lsmod | grep overlay
overlay                71964  0 

配置docker的yum仓库

# tee /etc/yum.repos.d/docker.repo <<-'EOF'
[dockerrepo]
name=Docker Repository
baseurl=https://yum.dockerproject.org/repo/main/centos/$releasever/
enabled=1
gpgcheck=1
gpgkey=https://yum.dockerproject.org/gpg
EOF

配置systemd服务在OverlayFS上运行Docker Daemon

# mkdir -p /etc/systemd/system/docker.service.d && sudo tee /etc/systemd/system/docker.service.d/override.conf <<- EOF
[Service]
ExecStart=
ExecStart=/usr/bin/docker daemon --storage-driver=overlay -H fd://
EOF

安装Docker engine，daemon和service

# yum install -y docker-engine-1.11.2
# systemctl start docker && sudo systemctl enable docker