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kopiluwak [2009/09/14 09:04]
193.190.76.58
kopiluwak [2010/10/02 17:26]
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-====== Kopiluwak: The Build Machine ====== 
-===== Hardware ====== 
-  * HP DL145 G3 
-  * Firmware based on coreboot [[http://​www.coreboot.org/​HP_DL145_G3|Coreboot page on HP DL145 g3]] 
-    * original bios did not support hardware virtualisation 
-    * bootloader is embedded in the firmware and is similar to grub. Config file in /​boot/​filo/​menu.lst . 
-  * Dual Opteron 2218HE 
-  * 8GB reg ecc ram (kingston) 
-  * dual 200GB sata drives (software raid 1) 
-===== Idea ====== 
-The machine hosts virtual machines. Other than that no functionality runs on the machine. 
- 
-===== Host ===== 
-==== Software ==== 
-^ 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> 
-#!/bin/bash 
-# 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 
-</​code>​ 
-== network == 
-  * eth0: fixed ip - external ip (dns: buildbot.xfce.org) 
-  * eth1: internal nic connected to the virtual switch (ip: 10.0.0.2) 
-== software == 
-  * buildbot 0.7.10p1 
-== config buildbot == 
-  * 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 master.cfg 
-</​code>​ 
-  * master.cfg: 
-<code python> 
-</​code>​ 
-==== Guest 2: buildslave ==== 
- 
-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