通过pxe批量部署linux环境(一)

通过pxe批量部署linux环境(一)

一、系统环境准备

1、系统环境:CentOS7.5 x86-64

2、软件包:采用 yum 安装方式,为提高软件包下载速度,将源修改为阿里云。

二、安装Cobbler

2.1 安装cobbler相关软件包

shell> wget -O /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-7.repo
shell> wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
shell> yum -y install cobbler cobbler-web pykickstart httpd rsync tftp-server dhcp xinetd
shell> yum install fence-agents -y

2.2 安装debmirror(提供对Debian的支持,其他系统可略过)

shell> yum -y install debmirror

三、配置Cobbler

3.1 设置tftp和rsync服务

shell> sed -i '/disable/c\\tdisable\t\t\t= no' /etc/xinetd.d/tftp
shell> cat > /etc/rsyncd.conf << EOF
read only = yes
list = no
max connections = 100
hosts allow=10.52.0.0/16,10.32.0.0/16,192.168.0.0/16
uid = nobody
gid = nobody
log file = /var/log/rsyncd.log
pid file = /var/run/rsyncd.pid
lock file = /var/run/rsync.lock
EOF

3.2 设置 root 默认密码(只对RedHat/CentOS系统有效)

# openssl passwd -1 -salt 'random-phrase-here' 'your-password-here'
shell> openssl passwd -1 -salt '91donkey.com' '1q2w3e4r' 
$1$91donkey$KJwQNrYEdGksTB2L9v2bC0

3.3 修改 /etc/cobbler/settings 文件内容

# tftp服务器IP地址
next_server: 10.20.57.32
# cobbler管理DHCP
manage_dhcp: 1
# cobbler管理rsync(可选)
manage_rsnyc: 1
# cobbler管理dns(可选)
manage_dns: 1
# 修改pxe_just_once值:
# 1、预防由于服务器设置从网络引导,导致循环安装;
# 2、激活此设置,机器会告诉Cobbler安装已完成。Cobbler会将对象的netboot标志改为false,这会强制服务器从本地引导。
pxe_just_once: 1
server: 10.20.57.32
default_password_crypted: "$1$91donkey$KJwQNrYEdGksTB2L9v2bC0"
 

3.4 配置 /etc/cobbler/dhcp.template 文件内容(节选)

subnet 10.20.48.0 netmask 255.255.248.0 {
 option routers 10.20.48.1;
 option domain-name-servers 114.114.114.114;
 option subnet-mask 255.255.248.0;
 range dynamic-bootp 10.20.49.1 10.20.49.20;
 default-lease-time 900;
 max-lease-time 1800;
 next-server $next_server;
}

3.5 启动相关服务

# rsync
shell> systemctl enable rsyncd && systemctl start rsyncd
# xinetd
shell> systemctl enable xinetd && systemctl start xinetd
# httpd
shell> systemctl enable httpd && systemctl start httpd
# cobbler
shell> systemctl enable cobblerd && systemctl start cobblerd
shell> cobbler sync
# dhcp
shell> systemctl enable dhcpd && systemctl start dhcpd

3.6 开启动态更新

# 如果启用,Cobbler将允许动态修改设置,而无需重新启动到cobblerd守护程序。
shell> sed -i 's/allow_dynamic_settings: 0/allow_dynamic_settings: 1/' /etc/cobbler/settings
shell> systemctl restart cobblerd

3.7 配置引导菜单

shell> cobbler get-loaders
shell> cobbler signature update
shell> cobbler sync

3.8 检查 cobbler 配置结果

shell> cobbler check
The following are potential configuration items that you may want to fix:
1 : enable and start rsyncd.service with systemctl
2 : debmirror package is not installed, it will be required to manage debian deployments and repositories
Restart cobblerd and then run 'cobbler sync' to apply changes.

3.9 修改 cobbler 数据目录

# 由于cobbler默认将数据放在/var目录下,而按照我的系统安装习惯,/var目录一般不会分太大空间,需要修改文件存放路径。
shell> mv /var/www/cobbler /export/
shell> ln -s /export/cobbler /var/www/cobbler

3.10 修改开机画面显示

shell> sed -i 's/cobbler.github.io/www.91donkey.com/' /etc/cobbler/pxe/pxedefault.template
shell> cobbler sync

作者:龍龍小宝

原文:https://www.cnblogs.com/91donkey/p/11635375.html

通过pxe批量部署linux环境(一)


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