这周针对自动化安装我们讲述PXE自动化安装centos6和centos7
一、需要提前关闭防火墙和SELINUX，DHCP服务器使用静态IP
用getenforce查看SELINUX是否关闭
iptables -F 关闭防火墙
二、安装http、tftp-server、dhcp、syslinux包
yum install http tftp-server dhcp syslinux
三、启动httpd服务
设置httpd开启自启
systemctl enable httpd
启动httpd服务
systemctl start httpd
创建目录
mkdir -p /var/www/html/centos/{6,7}
挂载对应的光盘
mount /dev/sr0 /var/www/html/centos/7
mount /dev/sr1 /var/www/html/centos/6
设置开启自动挂载
vim /etc/fstab
/dev/sr0 /var/www/html/centos/6 iso9660 defaults 0 0
/dev/sr1 /var/www/html/centos/7 iso9660 defaults 0 0
四、修改DHCP配置文件
cp /usr/share/doc/dhcp-4.2.5/dhcpd.conf.example /etc/dhcp/dhcpd.conf
vim /etc/dhcp/dhcpd.conf
systemctl start dhcpd
ss -nul查看DHCP67端口是否开启
systemctl enable dhcpd
五、启动tftp服务
cp /usr/share/syslinux/pxelinux.0 /var/lib/tftpboot
cp /usr/share/syslinux/menu.c32 /var/lib/tftpboot
cp /var/www/html/centos/7/isolinux/isolinux.cfg pxelinux.cfg/
vim default内容如下：
设置开机启动
systemctl enable tftp
启动服务
systemctl start tftp
六、准备应达文件
mkdir /var/www/html/ks
cp /root/{ks6.cfg,ks7.cfg} /var/www/html/ks/
vim ks6.cfg内容如下：
# Kickstart file automatically generated by anaconda.
#version=DEVEL
install
url --url="http://172.17.0.1/centos/6"
lang en_US.UTF-8
keyboard us
network --onboot yes --device eth1 --bootproto dhcp --noipv6
rootpw --iscrypted $6$tXmSEQTX.96Oxlwf$CS6RX80cUp/M/ME7NudrGH8uMtQA32fq9qWHGpda
VOyFExQGZtG3aBGcbHikxZ5Q69YR5pDJaF98C3MtCDU5b1
firewall --service=ssh
authconfig --enableshadow --passalgo=sha512
selinux --disabled
timezone Asia/Shanghai
bootloader --location=mbr --driveorder=sda --append="crashkernel=auto rhgb quiet
"
# The following is the partition information you requested
# Note that any partitions you deleted are not expressed
# here so unless you clear all partitions first, this is
# not guaranteed to work
#clearpart --none
part /boot --fstype=ext4 --size=1024
part / --fstype=ext4 --size=51200
part /app --fstype=ext4 --size=51200
part swap —size=2048
repo --name="CentOS" --baseurl=cdrom:sr0 --cost=100
%packages
@core
@server-policy
@workstation-policy
autofs
@desktop
%end
%post
rm -rf /etc/yum.repos.d/*
cat > /etc/yum.repos.d/base.repo <
[base]
name=base
baseurl=http://172.17.0.1/centos/6
gpgcheck=0
EOF
useradd wang
echo magedu |passwd --stdin wang
%end
vim ks7.cfg内容如下：
#version=DEVEL
# System authorization information
auth --enableshadow --passalgo=sha512
# Use CDROM installation media
url --url=http://192.168.153.146/centos/7/
# Use graphical install
text
reboot
# Run the Setup Agent on first boot
firstboot --disable
ignoredisk --only-use=sda
# Keyboard layouts
keyboard --vckeymap=us --xlayouts='us'
# System language
lang en_US.UTF-8
# Network information
network --bootproto=dhcp --device=ens33 --onboot=on --ipv6=auto --activate
network --hostname=centos7.magedu.com
# Root password
rootpw --iscrypted $6$JXYEkzjhvNHA9CO8$yIDZnl0jc5YRRSkzQZIVnGiBRTLv1eF/q1ubmmG0a
Dpj20vTpvn56rCCQl9kfnBNENkxWxSiuzqo/qX9Un3nt0
# System services
services --disabled="chronyd"
# System timezone
timezone Asia/Shanghai --isUtc —nontp
user --name=magedu --password=$6$qhd7tuB6MGxRHCoB$EIsmRGtxp4J/hl2AnYjIBhJMYGUXRG
KgD/zrPfL0yStVwvbCn60UqrSLQBtYWcJTjZXSwSMkuHldD7G2GTdgD/ --iscrypted --gecos="ma
gedu"
# X Window System configuration information
xconfig --startxonboot
# System bootloader configuration
bootloader --location=mbr --boot-drive=sda
autopart --type=lvm
# Partition clearing information
clearpart --none --initlabel
%packages
@^graphical-server-environment
@base
@core
@desktop-debugging
@dial-up
@fonts
@gnome-desktop
@guest-agents
@guest-desktop-agents
@hardware-monitoring
@input-methods
@internet-browser
@multimedia
@print-client
@x11
%end
%addon com_redhat_kdump --disable --reserve-mb='auto'
%end
%anaconda
pwpolicy root --minlen=6 --minquality=50 --notstrict --nochanges --notempty
pwpolicy user --minlen=6 --minquality=50 --notstrict --nochanges --notempty
pwpolicy luks --minlen=6 --minquality=50 --notstrict --nochanges --notempty
%end
到此为止就可以基于网络自动化安装了。