APPLIES TO:
Linux OS - Version: 4.4 to 5.3 - Release: OEL4U4 to OEL5U3
Linux x86
Linux x86-64
GOAL
To be able to boot into Rescue Mode with PXE
SOLUTION
Requirements
- DHCP Server
- TFTP Server
- HTTP Server
In the following Example the dhcp, tftp and http server is 192.168.79.110. The server that should be booted with PXE has the MAC Address: 00:16:3E:53:17:D7
Configuration
- add the following entry into your dhcpd.conf
host pxetest {
hardware ethernet 00:16:3E:53:17:D7;
next-server 192.168.79.110;
filename "/el4u5/pxelinux.0";
}
- restart the dhcpd server
- kickstart config ( in /var/ww/kickstart/ks.cfg ):
lang en_US.UTF-8
langsupport --default=en_US.UTF-8 en_US.UTF-8
keyboard us
mouse none
url --url http://192.168.79.110/el4u5/
network --bootproto=dhcp
- mount an Enterprise Linux iso file
# mount -o loop Enterprise-R4-U5-i386-dvd.iso /var/www/el4u5
- copy all necessary files to /tftpboot/el4u5
# up2date syslinux
# mkdir /tftpboot
# mkdir /tftpboot/el4u5
# cp /usr/lib/syslinux/pxelinux.0 /tftpboot/el4u5
# mkdir /tftpboot/el4u5/pxelinux.cfg
# touch /tftpboot/el4u5/pxelinux.cfg/default
# cp /var/www/el4u5/images/pxeboot/* /tftpboot/el4u5/
- configure /tfpboot/pxelinux.cfg/default entries:
default linux
timeout 100
prompt 1
LABEL linux
KERNEL vmlinuz
APPEND initrd=initrd.img ramdisk_size=10000 text rescue ks=http://192.168.79.110/kickstart/ks.cfg
- httpd config ( not necessary if you already have a running httpd )
DocumentRoot "/var/www"
# This should be changed to whatever you set DocumentRoot to.
#
<Directory "/var/www">
Options Indexes FollowSymLinks
AllowOverride None
Order allow,deny
Allow from all
</Directory>
- start httpd
# /etc/init.d/httpd start
- tftp server
- install tftp server
# up2date tftp-server
- enable the tftp server
# /sbin/chkconfig --level 345 xinetd on
- in /etc/xinetd.d/tfpt change
"disable = yes"
to
"disable = no"
- restart xinetd
# /etc/init.d/xinetd restart
Now your client 00:16:3E:53:17:D7, if pxe boot enabled, will boot into Rescue Mode.