This document discusses using Puppet and Cobbler together to provision and manage servers. Some key points: 1) Puppet is used to configure and manage servers, while Cobbler is used for provisioning like PXE booting and installing operating systems. 2) Cobbler can install a base operating system and register the server with Puppet. Then Puppet can configure the server by applying manifests. 3) Koan can be used at kickstart time to register virtual machines as Cobbler systems and provision them, allowing virtual machines to be managed like physical servers.

1. puppet + cobbler
Naoya Nakazawa
@techlifecookpad
2009/12/3

2. About me
•
•
• id:n0ts
• : Carpe Diem
• http://www.sssg.org/blogs/naoya/

3. Motivation
•
•
•
•

4. Hardware
•D 1U
• 30 1
• 6

5. Software
• CentOS 5.x x86_64
• Puppet 0.24.7
• Cobbler 1.6.4

6. • https://fedorahosted.org/cobbler/
•
•

7. Manage Server
• puppetmaster+cobblerd
• Manage puppet
• yum

8. How to set up
my servers

9. 0
1)
2)
3)

10. 1
1.
2. BIOS/IPMI
• PXE
3. eth0 MAC
4. PXE pause

11. 2
1. manage manifest
2. manage puppetrun
cobbler_add_system_base { "s1":
mac1 => "xx:xx:xx:xx:xx:xx",
xen_domu_num => 3,
}

12. 3
• puppet manifest
• PXE

13. 4
•
• 10 20
• SSH

14. Tips & Tricks

15. puppetd at kickstart
• %post puppet
#if $hostname
/usr/sbin/puppetd
--fqdn "$hostname"
--logdest /root/puppet.log
--verbose --no-daemonize
--onetime --report
#end if

16. koan
•
• Xen, KVM,VMWare
• cobbler

17. koan at kickstart 1
• /etc/rc.local koan
Xen DomU
• cobbler system
cobbler_add_system_web { "s1-u1": }
cobbler_add_system_lvs { "s1-u2": }
cobbler_add_system_dbm { "s1-u3": }

18. koan at kickstart 2
#set $xen_domu_num = $int($getVar('$xen_domu_num', 0))
#if $hostname != "" and $xen_domu_num > 0
/bin/cat << EOF >> /etc/rc.local
FACTER=/usr/bin/facter
if [ -x $FACTER ]; then
VIRTUAL=`$FACTER virtual`
if [ $VIRTUAL == "xen0" ]; then
EOF
#for $i in $range(1, $xen_domu_num + 1)
/bin/cat << EOF >> /etc/rc.local
if [ ! -f /etc/xen/`/bin/hostname -s`-u$i ]; then
sleep 10
/usr/bin/koan --server=cobbler.`/bin/hostname -d` --system=`/bin/hostname -s`-u$i
--virt --nogfx
ln -s /etc/xen/`/bin/hostname -s`-u$i /etc/xen/auto/`/bin/hostname -s`-u$i
fi
EOF
#end for
/bin/cat << EOF >> /etc/rc.local
fi
fi
EOF
#end if

19. matrix 1
• DSAS like MATRIX
s1:
s1-u1: hoge_web
s1-u2: hoge_lvs
s1-u3: hoge_dbm

20. matrix 2
• matrix puppet node
$ ./tools/puppet_node.rb ./nodes/matrix s1-u1.example.com
---
parameters:
classes:
- hoge_web
- puppet.conf -
# An external command that can produce node information.
external_nodes = "$confdir/tools/puppet_node.rb $confdir/nodes/matrix"
# Where to find information about nodes.
node_terminus = exec

21. facter
•
facter
$ sudo facter -p bios_vendor
DXXX Inc.
class baseclass {
if $bios_vendor == "DXXX Inc." {
include dXXX
}
}

22. puppet directory tree
• puppet
• /etc/sysconfig/puppetmaster
PUPPETMASTER_EXTRA_OPTS="--confdir=/hoge/puppet"

23. puppet module
• Puppet Best Practices 2.0
http://reductivelabs.com/trac/puppet/wiki/PuppetBestPractice

24. my puppet module
• CentOS
•
http://github.com/n0ts/puppet

25. Challenges
• iptables
• BIOS/IPMI
• D
• DomU

26. Puppet at Velocity
• Velocity Puppet
http://www.sssg.org/~naoya/puppet/project.html

27. Thank You!