CentOS7 operation and maintenance-Cobbler easily and automatically minimize the deployment installation | Super detailed

Cobbler automated deployment

Cobbler is an open source project developed using Python. It provides a fully automatic batch and rapid network installation environment for the establishment of a Linux system by concentrating all the services involved in the deployment system.

1. One-click installation of EPEL source

将代码保存为 xx.sh
chmod 777 xx.sh
./xx.sh运行代码

#!/bin/bash
cd /etc/yum.repos.d/;
rm -rf *;
wget -nc http://mirrors.aliyun.com/repo/Centos-7.repo;
mv Centos-7.repo CentOS-Base.repo;
yum clean all && yum makecache;

wget https://dl.fedoraproject.org/pub/epel/7/x86_64/Packages/e/epel-release-7-13.noarch.rpm;
rpm -ivh epel-release-7-13.noarch.rpm;
yum clean all && yum makecache;
yum install -y cobbler dhcp tftp-server pykickstart httpd rsync xinetid;

systemctl stop firewalld;
setenforce 0;

Manually install and
download the EPEL package [site resources] After
inputting rzin the Shell, select the file and install it

rpm -ivh epel-release-7-13.noarch.rpm

Two, modify the Cobbler main configuration file

vim /etc/cobbler/settings

next_server: 192.168.1.1  
#指向tftp服务器的IP，即本机IP
server: 192.168.1.1 
#指向cobbler服务器的IP，即本机IP
manage_dhcp: 1                 	 
#让cobbler管理dhcp服务
manage_rsync: 1					 
#让cobbler管理rsync服务
manage_tftp: 1			    	 
#让cobbler管理tftp服务

systemctl start httpd
systemctl start cobblerd
#开启服务

Three, Cobbler self-inspection

cobbler check

Fourth, modify the TFTP configuration

vim /etc/xinetd.d/tftp

Open service

systemctl restart xinetd
systemctl start rsyncd

Five, download the boot operation file

cobbler get-loaders

Sixth, set the new machine administrator password

Because Cobbler uses the "salt" method to set the password, this form is also used here to generate a password

openssl passwd -1 -salt '123456' '123456'

Seven, add the generated key to the Cobbler configuration file

vim /etc/cobbler/settings

// 使用命令模式
/default_passwd 定位位置

Change default_password_cryptedthe value in to the value generated in the previous step

Eight, modify the DHCP template file

vim /etc/cobbler/dhcp.template

subnet 192.168.1.0 netmask 255.255.255.0 {
    
    
 option routers             192.168.1.1;		             
 #修改网关
 option domain-name-servers 192.168.1.2;		             
 #修改DNS，如果网卡使用的是dhcp模式
 #可通过nslookup 127.0.0.1 | grep server 查询 DNS地址
 option subnet-mask         255.255.255.0;
 range dynamic-bootp        192.168.1.100 192.168.1.200;   
 #修改地址池

Nine, Cobbler synchronization DHCP template

This step may take a long time, wait patiently

cobbler sync

systemctl restart dhcpd
// 重启一下DHCP服务

10. Import ISO image file

The everything version is recommended here

mount /dev/sr0 /mnt
// 挂载镜像文件

Import the Linux kernel in the iso image and initialize the image file

cobbler import --path=/mnt/ --name=CentOS-7-x86_64 --arch=x86_64  
#参数说明
#--path	表示镜像所挂载的目录
#--name	表示为安装源定义的名字
#--atch	表示指定安装源的系统位数
#默认导入存放路径为/var/www/cobbler/ks_mirror/CentOS-7-x86_64 

systemctl restart cobblerd.service
systemctl restart dhcpd.service
systemctl restart xinetd.service
systemctl restart httpd.service
// 重启所有服务

11. Start the installation

Recommended bare metal memory ≥ 2GB

12. Digression-install graphical interface

yum groupinstall "GNOME Desktop" "Graphical Administration Tools"

After setting the installation startxorreboot