CentOS 7
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PXE Boot : Network Install
2015/06/26
 
Install OS tp a client computer from PXE Server via network. It's useful if your client computer has no CD/DVD drive.
[1] Download ISO image first to your PXE server. The following example shows the ISO image of CentOS 7 is under /home/iso directory.
[root@dlp ~]#
mkdir -p /var/pxe/centos7

[root@dlp ~]#
mkdir /var/lib/tftpboot/centos7

[root@dlp ~]#
mount -t iso9660 -o loop /home/iso/CentOS-7-x86_64-DVD-1503-01.iso /var/pxe/centos7

[root@dlp ~]#
cp /var/pxe/centos7/images/pxeboot/vmlinuz /var/lib/tftpboot/centos7/

[root@dlp ~]#
cp /var/pxe/centos7/images/pxeboot/initrd.img /var/lib/tftpboot/centos7/

[root@dlp ~]#
cp /usr/share/syslinux/menu.c32 /var/lib/tftpboot/

[root@dlp ~]#
vi /var/lib/tftpboot/pxelinux.cfg/default
# create new

timeout 100
default menu.c32

menu title ########## PXE Boot Menu ##########
label 1
   menu label ^1) Install CentOS 7
   kernel centos7/vmlinuz
   append initrd=centos7/initrd.img method=http://10.0.0.30/centos7 devfs=nomount

label 2
   menu label ^2) Boot from local drive
   localboot
[2] Start HTTP Server. Refer to here to install httpd. Furthermore add settings like follows.
[root@dlp ~]#
vi /etc/httpd/conf.d/pxeboot.conf
# create new

Alias /centos7 /var/pxe/centos7
<Directory /var/pxe/centos7>
    Options Indexes FollowSymLinks
   
# IP address you allow to access

    Require ip 127.0.0.1 10.0.0.0/24
</Directory>
[root@dlp ~]#
systemctl restart httpd

[3] Enable network boot on BIOS settings of client computer and start it, then installation menu is shown, push Enter key to proceed to install.
[4] Installer starts. It's the same procedure of installation after this.
 
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