Based Cobbler introduced in CentOS7 deployment environment (a)

First, prepare the system environment

 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。

Second, the installation Cobbler

• 1, install cobbler related packages

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, installation debmirror (support for Debian, and other systems can be skipped)

shell> yum -y install debmirror

Third, the configuration Cobbler

• 1, set the tftp and rsync service

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

• 2, set the default password root (only valid for RedHat / CentOS system)

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

• 3, modify / etc / cobbler / settings file contents

# tftp服务器IP地址
next_server: 10.20.57.32
# cobbler管理HDCP
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"

• 4, /etc/cobbler/dhcp.template configuration file content (excerpt)

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;
}

• 5, start related services

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

• 6, open dynamic update

# 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

• 7, a lead Menu

shell> cobbler get-loaders
shell> cobbler sync

• 8, the configuration check cobbler

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.

• 9, modify the data directory cobbler

# 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