自动安装

Posted 2020-10-11

7实现PXE支持centos6和7的系统安装

注意：

1 改成独立的网段vnnet12，非桥接，dhcp功能禁用

2 禁用iptables和selinux

1 yum install httpd dhcp tftp-server syslinux

2 cp /usr/share/doc/dhcp-4.2.5/dhcpd.conf.example /etc/dhcp/dhcpd.conf 

vim /etc/dhcp/dhcpd.conf

subnet 192.168.37.0 netmask 255.255.255.0 {

range 192.168.37.10 192.168.37.100;

next-server 192.168.37.107;

filename "pxelinux.0";

}

systemctl start dhcpd

systemctl enable dhcpd

3 systemctl enable tftp

systemctl start tftp

4 systemctl enable httpd

systemctl start httpd

5 mkdir /var/www/html/centos/{6,7}

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

mount -a

6 mkdir /var/www/html/ksdir

ls /var/www/html/ksdir/

ks6.cfg  ks7.cfg

7  cp /usr/share/syslinux/{pxelinux.0,menu.c32} /var/lib/tftpboot/

mkdir /var/lib/tftpboot/centos{6,7}

cp /var/www/html/centos/6/isolinux/{initrd.img,vmlinuz}  /var/lib/tftpboot/centos6

cp /var/www/html/centos/7/isolinux/{initrd.img,vmlinuz}  /var/lib/tftpboot/centos7

mkdir /var/lib/tftpboot/pxelinux.cfg/

cp /var/www/html/centos/7/isolinux/isolinux.cfg  /var/lib/tftpboot/pxelinux.cfg/default

8 vim /var/lib/tftpboot/pxelinux.cfg/default

default menu.c32

timeout 600

menu title CentOS Linux 7

label centos7

  menu label ^Auto Install CentOS Linux 7

  kernel centos7/vmlinuz

  append initrd=centos7/initrd.img ks=http://httpsrv/ksdir/ks7.cfg

label centos6

  menu label Auto install CentOS Linux ^6

  kernel centos6/vmlinuz

  append initrd=centos6/initrd.img  ks=http://httpsrv/ksdir/ks6.cfg

label manualcentos6

  menu label ^Manual install CentOS Linux 6

  kernel centos6/vmlinuz

  append initrd=centos6/initrd.img  inst.repo=http://httpsrv/centos/6/

label local

  menu default

  menu label Boot from ^local drive

  localboot 0xffff

menu end

tree /var/lib/tftpboot/  

/var/lib/tftpboot/

├── centos6

│?? ├── initrd.img

│?? └── vmlinuz

├── centos7

│?? ├── initrd.img

│?? └── vmlinuz

├── menu.c32

├── pxelinux.0

└── pxelinux.cfg

└── default

cobbler安装（基于epel源）：

·设置开机启动systemctl enable httpd tftp cobblerd（安装cobbler之后有cobbler这个服务需要启动）

启动服务 systemctl start httpd tftp cobblerd

·vim /etc/obbler/settings (编辑cobbler配置文件，在server，next_server，default_password_crypted行修改，1.自己服务器ip，2.tftp的ip（本机是TFTP服务就是本机ip）,3.默认密码)

·cp  /usr/share/syslinux/{pxelinux.0,menu.c32}  /var/lib/tftpboot/

·vim /etc/cobbler/dhcp.template (修改网络ip地址和地址段)

·cobbler sync（修改完执行，自动导入到dhcp配置文件里）

·cobbler import --path=/misc/cd/ --name=centos7.3 --arch=x86_64(导入系统光盘到cobbler，--path为光盘路径|cobbler distro list命令查看导入的系统！可以导入多个，指定多个多个光盘路径)

#·/var/www/cobbler/ks_mirror(上一步导入，导入到当前目录下)

#·自己制定ks.cfg（应答文件）文件时指定特定路径(url --url=$tree)

 

·添加启动菜单项：

 

--name为启动时的菜单选项

--distro为cobbler  distro  list的选项（yum源选项）

--kickstart应答文件存放路径必须为此路径

·启动菜单选项删除： 

·

基于web的cobbler：

·yum  install  cobbler-web

·添加用户首次添加需要加上-c选项，之后添加就不需要。

 

·第二种添加用户

useradd  –s /sbin/nologin xxx1

echo  xxx2 | passwd –stdin  xxx1

vim /etc/cobbler/user.conf