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kopiluwak [2009/06/23 13:13] 193.190.76.58kopiluwak [2010/10/02 17:26] (current) – external edit 127.0.0.1
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 ===== Idea ====== ===== Idea ======
 The machine hosts virtual machines. Other than that no functionality runs on the machine. The machine hosts virtual machines. Other than that no functionality runs on the machine.
-===== KVM ===== + 
-=== Guest 1: buildbot.xfce.org === +===== Host ===== 
-== Configuration == +==== Software ==== 
-  Start the machine:+^ software    ^ version      ^ website                            ^ 
 +| Lunar Linux | 1.6.4 x86_64 | [[http://lunar-linux.org]]         | 
 +| Linux       | 2.6.30.5                                        | 
 +| kvm         | 88           | [[http://kvm.qumranet.com]]        | 
 +| vde         | 2.2.2        | [[http://vde.sourceforge.net]]     | 
 +| lvm2        | 2.02.45      | [[http://sources.redhat.com/lvm2]] | 
 +| tunctl      | 1.5          | [[http://tunctl.sourceforge.net]] 
 +==== Configuration ==== 
 +=== Storage === 
 +* root and boot 
 +| /dev/md1 | /     | ext3 | 
 +| /dev/md0 | /boot | ext3 | 
 +* var, home, luns for vm's 
 +VolumeGroup: vg on /dev/md2 
 +| /dev/mapper/vg-home | /home | ext4 | 
 +| /dev/mapper/vg-var | /var | ext4 | 
 + 
 +=== Network === 
 +  * eth0 - bridged to br0, ip assigned with dhcp 
 +  * br0: run script in screen 
 +<code bash> 
 +#!/bin/bash 
 +if [ $TERM == screen ]; then 
 +/usr/bin/killall dhcpcd 
 +/bin/rm -fr /var/db/dhcpcd* 
 +/sbin/modprobe tun 
 +/usr/sbin/tunctl -t tap0 
 +/usr/sbin/brctl addbr br0 
 +/usr/sbin/brctl addif br0 eth0 
 +/usr/sbin/brctl addif br0 tap0 
 +/sbin/ifconfig eth0 0.0.0.0 promisc up #still need to test if promisc is needed 
 +/sbin/ifconfig tap0 0.0.0.0 promisc up #still need to test if promisc is needed 
 +/sbin/ifconfig br0 up 
 +/usr/sbin/dhcpcd br0 
 + 
 +echo "Sleep for 5 minutes, Ctrl ^ C to stop, will revert changes if you don't" 
 +sleep 5m 
 + 
 +echo "revert changes" 
 +/sbin/ifconfig br0 down 
 +/usr/bin/killall dhcpcd 
 +/bin/rm -fr /var/db/dhcpcd* 
 +/usr/sbin/brctl delif br0 eth0 
 +/usr/sbin/brctl delif br0 tap0 
 +/usr/sbin/brctl delbr br0 
 +/usr/sbin/tunctl -d tap0 
 +/sbin/ifconfig eth0 up 
 +/usr/sbin/dhcpcd eth0 
 + 
 +echo "Sleep for 5 minutes, Ctrl ^ C to stop, will revert changes if you don't" 
 +sleep 5m 
 +echo "reboot" 
 +/sbin/reboot 
 +else 
 +echo "USE SCREEN"; 
 +fi 
 +</code> 
 +  * vde_switch: Switch that the virtual machines (buildslaves) will use to communicate with the buildmaster. 
 +<code bash> 
 +vde_switch -tap tap1 -daemon; 
 +ifconfig tap1 10.0.0.1; 
 +echo "1" >  /proc/sys/net/ipv4/ip_forward; 
 +iptables -t nat -A POSTROUTING -o br0 -j MASQUERADE 
 +</code> 
 + 
 +===== Hosted Virtual Machines ===== 
 +==== Guest 1: buildbot.xfce.org ==== 
 +=== Configuration === 
 +== Start the machine ==
 <code bash> <code bash>
 #!/bin/bash #!/bin/bash
 # This script starts the buildbot # This script starts the buildbot
 vdeq qemu-system-x86_64 -vnc :1 -hda /dev/vg/BuildBot -m 512 -net nic,vlan=0 -net tap,vlan=0,ifname=tap0,script=no -net vde,vlan=1 -net nic,vlan=1 -daemonize vdeq qemu-system-x86_64 -vnc :1 -hda /dev/vg/BuildBot -m 512 -net nic,vlan=0 -net tap,vlan=0,ifname=tap0,script=no -net vde,vlan=1 -net nic,vlan=1 -daemonize
-ze 
 </code> </code>
-  * network +== network == 
-    * eth0: fixed ip - external ip (dns: buildbot.xfce.org) +  * eth0: fixed ip - external ip (dns: buildbot.xfce.org) 
-    * eth1: internal nic connected to the virtual switch (ip: 10.0.0.2) +  * eth1: internal nic connected to the virtual switch (ip: 10.0.0.2) 
-  software +== software == 
-    * lunar-linux 1.6.4 x86_64 +  * buildbot 0.7.10p1 
-    * buildbot 0.7.10p1 +== config buildbot == 
-== Guest 2: buildslave ==+  * create the user buildmaster 
 +  * Create instance of buildbot: 
 +<code bash> 
 +buildbot create-master /home/buildmaster/xfce 
 +</code> 
 +  * start the buildbot instance: 
 +<code bash> 
 +buildbot start /home/buildmaster/xfce 
 +</code> 
 +  * configure the buildbot instance: edit master.cfg 
 +  * validate the edits: 
 +<code bash> 
 +buildbot checkconfig master.cfg 
 +</code> 
 +  * reread the config in the current instance: 
 +<code bash> 
 +buildbot reconfig /home/buildmaster/xfce 
 +</code> 
 +  * master.cfg: 
 +<code python> 
 +</code>
  
 +==== Guest 2: buildslave ====
  
-=== buildbot ===+lunar 
 +ip 10.0.0.3 
 +  vdeq qemu-system-x86_64 -vnc :2 -hda /dev/vg/lunar -m 512 -net vde,vlan=1 -net nic,vlan=1 -daemonize