WH Worktips(1)
Jun 17, 2015
Technology
Preparation
Hardware: 2G Memory, 1-Core, the Cobbler Server, which runs CentOS6.6.
Network: Use a 10.47.58.0/24(Its name is WHNetwork), no dhcp server in this network.
Cobbler Server Preparation
First Change its IP address to 10.47.58.2, gateway to 10.47.58.1.
[root@z_WHServer ~]# cat /etc/sysconfig/network-scripts/ifcfg-eth0
DEVICE=eth0
TYPE=Ethernet
UUID=a6e5b56f-661f-4128-ab8c-c575a9623245
ONBOOT=yes
NM_CONTROLLED=yes
BOOTPROTO=none
IPADDR=10.47.58.2
GATEWAY=10.47.58.1
......
[root@z_WHServer ~]# cat /etc/sysconfig/network
NETWORKING=yes
HOSTNAME=z_WHServer
# vim /etc/selinux/config
#SELINUX=enforcing
SELINUX=disabled
# reboot
Install and configure Cobbler Server via:
# yum -y update && yum install -y cobbler cobbler-web
# reboot
# openssl passwd -1 │
Password: │
Verifying - Password: │
igaowugoauwgoueougo
# vim /etc/cobbler/settings
default_password_crypted: "agowuoguwoawoguwoe"
# default, localhost
server: 10.47.58.2
# default, localhost
next_server: 10.47.58.2
manage_dhcp: 1
Edit the dhcp template:
# vim /etc/cobbler/dhcp.template
#### subnet 192.168.1.0 netmask 255.255.255.0 {
#### option routers 192.168.1.5;
#### option domain-name-servers 192.168.1.1;
#### option subnet-mask 255.255.255.0;
#### range dynamic-bootp 192.168.1.100 192.168.1.254;
#### default-lease-time 21600;
#### max-lease-time 43200;
#### next-server $next_server;
subnet 10.47.58.0 netmask 255.255.255.0 {
option routers 10.47.58.1;
range dynamic-bootp 10.47.58.3 10.47.58.254;
option domain-name-servers 114.114.114.114, 180.76.76.76;
option subnet-mask 255.255.255.0;
filename "/pxelinux.0";
default-lease-time 21600;
max-lease-time 43200;
next-server $next_server;
class "pxeclients" {
Check via:
[root@z_WHServer ~]# service cobblerd start
Starting cobbler daemon: [ OK ]
[root@z_WHServer ~]# chkconfig cobblerd on
[root@z_WHServer ~]# chkconfig httpd on
[root@z_WHServer ~]# service cobblerd status
cobblerd (pid 5421) is running...
Reboot and Check via:
# cobbler check
You will get lots of the errors, first solve the dhcpd issue, notice the following dhcpd configuration file is temporarily used.
# yum install -y dhcp
# vim /etc/dhcp/dhcpd.conf
#
# DHCP Server Configuration file.
# see /usr/share/doc/dhcp*/dhcpd.conf.sample
# see 'man 5 dhcpd.conf'
#
# create new
# specify domain name
option domain-name "server.world";
# specify name server's hostname or IP address
option domain-name-servers dlp.server.world;
# default lease time
default-lease-time 600;
# max lease time
max-lease-time 7200;
# this DHCP server to be declared valid
authoritative;
# specify network address and subnet mask
subnet 10.47.58.0 netmask 255.255.255.0 {
# specify the range of lease IP address
range dynamic-bootp 10.47.58.200 10.47.58.254;
# specify broadcast address
option broadcast-address 10.47.58.255;
# specify default gateway
option routers 10.47.58.1;
}
# service dhcpd start
# chkconfig dhcpd on
# chkconfig xinetd on
# reboot
Get loaders to download the loaders to /var/lib/cobbler/loaders:
!!! Notice, this step maybe failed because of networking issues!!!!
$ cobbler get-loaders
Change xinted:
# cat /etc/xinetd.d/rsync
# default: off
# description: The rsync server is a good addition to an ftp server, as it \
# allows crc checksumming etc.
service rsync
{
disable = no
Edit iptables:
$ sudo vim /etc/sysconfig/iptables
:OUTPUT ACCEPT [0:0]
-A INPUT -p udp -m multiport --dports 69,80,443,25151 -j ACCEPT
-A INPUT -p tcp -m multiport --dports 69,80,443,25151 -j ACCEPT
-A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
$ sudo reboot
Install packages:
# yum install -y debmirror pykickstart cman
# cobbler check
# cobbler sync
Import Systems
Import 2 DVD iso via:
# mount -o loop -t iso9660 CentOS-6.5-x86_64-bin-DVD1.iso /mnt1/
# cobbler import --name=CentOS-6.5 --arch=x86_64 --path=/mnt1
# mount -o loop -t iso9660 CentOS-6.5-x86_64-bin-DVD2.iso /mnt2
# rsync -a '/mnt2/' /var/www/cobbler/ks_mirror/CentOS-6.5-x86_64/ --exclude-from=/etc/cobbler/rsync.exclude --progress
# COMPSXML=$(ls /var/www/cobbler/ks_mirror/CentOS-6.5-x86_64/repodata/*comps*.xml)
# createrepo -c cache -s sha --update --groupfile ${COMPSXML} /var/www/cobbler/ks_mirror/CentOS-6.5-x86_64/
Verify it via:
[root@z_WHServer repodata]# cobbler distro list
CentOS-6.5-x86_64
[root@z_WHServer repodata]# cobbler profile list
CentOS-6.5-x86_64
[root@z_WHServer repodata]# cobbler distro report --name=CentOS-6.5-x86_64
Name : CentOS-6.5-x86_64
Architecture : x86_64
TFTP Boot Files : {}
Breed : redhat
Comment :
Fetchable Files : {}
Initrd : /var/www/cobbler/ks_mirror/CentOS-6.5-x86_64/images/pxeboot/initrd.img
Kernel : /var/www/cobbler/ks_mirror/CentOS-6.5-x86_64/images/pxeboot/vmlinuz
Check if your tftp working:
# yum install tftp-server
# vim /etc/xinetd.d/tftp
# /sbin/chkconfig tftp on
# service xinetd start
# netstat -anp | grep 69
# tftp 10.47.58.2
get pxelinux.0
If successful, the pxelinux.0 will downloaded to your directory.
Install New Systems
Use a machine, configure to the same network, then start from pxe.
Customize the KS file
Generate kickstart configuration file via:
# system-config-kickstart
Add a new profile via:
[root@z_WHServer kickstarts]# cobbler profile add --name=CentOS6.5-Desktop --kickstart=/var/lib/cobbler/kickstarts/CentOS-6.5-x86_64/C
sktop.cfg --distro=CentOS-6.5-x86_64
[root@z_WHServer kickstarts]# cobbler profile list
CentOS-6.5-x86_64
CentOS6.5-Desktop
Cobbler Web Interface
$ htdigest /etc/cobbler/users.digest "Cobbler" cobbler
Which will prompt you for a new password.
Once you have updated the password remember to run
$ cobbler sync