yum install gcc kernel-devel perl
reboot

mount /dev/cdrom /mnt
tar -C /tmp -zxvf /mnt/VMwareTools-*.tar.gz
umount /mnt
cd /tmp/vmware-tools-distrib/
./vmware-install.pl default

You can use:

32 bit: http://mirror.centos.org/centos/6/os/i386/
64 bit: http://mirror.centos.org/centos/6/os/x86_64/

• there is no rpmlint on Windows, making Linux tools load one cpu core to 100%
• i needed to transfer every change to linux machine and run rpm build

So I decided to create a dedicated virtual machine for rpm builds, on OpenVZ, running Eclipse and all needed plugins (git and Linux tools).

To install Eclipse dependencies do:

yum install xorg-x11-xauth gtk2 libXtst dejavu-sans-fonts dejavu-sans-mono-fonts dejavu-serif-fonts

Then you need Java (download JDK6 from http://java.oracle.com) and Eclipse (download from http://www.eclipse.org/downloads/).

Unpack Eclipse in /opt

Make sure you have this in /etc/ssh/sshd_config

X11Forwarding yes

I am using MobaXterm as Windows X server and putty to start Eclipse.

Start Putty, set Connection > SSH > X11 > Enable X11 forwarding, login to linux machine, type /opt/eclipse/eclipse and you should see Eclipse running.

Finally. Centos 5.4 with KVM support was released. I was really looking forward to upgrade my XEN guests to KVM guests. For several reasons. Mostly for curiosity, and better integration of KVM with linux kernel.

Upgrade from Centos 5.3 to 5.4 went smoothly, after reading Release Notes, I upgraded all XEN guests and host. Important to mention, I was running XEN 3.4.1 from Gitco repo, which complicated migration to KVM a little bit.

OK, so how did i do that. First of all, I installed non-xen kernel on all XEN guests and host.

yum install kernel

In this step, I could set grub’s menu.lst to run non-xen kernel by default, but I didn’t want to. I wanted to return to XEN quickly, if migration goes bad.

Next, I dumped XML configuration of all XEN guests.

virsh dumpxml  > /root/.xml

We will convert those configurations to KVM later.

Now, I installed KVM support on host system. Here I had a problem, that binaries from Base repo were conflicting with Gitco’s binaries. I solved this by uninstalling Gitco’s binaries.

yum install kvm kmod-kvm
yum install qemu
modprobe kvm-intel

If all went well, we are ready to reboot host to non-xen kernel.

And now, the most interesting part came. I copied one XML configration dumped earlier to /etc/libvirt/qemu/.

<domain type='xen' id='10'>
 <name>webdevel</name>
 <uuid>13d5035a-6c13-4f90-a1f3-68f4d0f90988</uuid>
 <memory>524288</memory>
 <currentMemory>524288</currentMemory>
 <vcpu>1</vcpu>
 <bootloader>/usr/bin/pygrub</bootloader>
 <bootloader_args>-q</bootloader_args>
 <os>
 <type>linux</type>
 </os>
 <clock offset='utc'/>
 <on_poweroff>destroy</on_poweroff>
 <on_reboot>restart</on_reboot>
 <on_crash>restart</on_crash>
 <devices>
 <disk type='block' device='disk'>
 <driver name='phy'/>
 <source dev='/dev/vg01/webdevel-disk'/>
 <target dev='xvda' bus='xen'/>
 </disk>
 <interface type='bridge'>
 <mac address='00:16:3e:33:07:06'/>
 <source bridge='xenbr0'/>
 <script path='/etc/xen/scripts/vif-bridge'/>
 <target dev='vif10.0'/>
 </interface>
 <console type='pty' tty='/dev/pts/3'>
 <source path='/dev/pts/3'/>
 <target port='0'/>
 </console>
 </devices>
</domain>

<domain type='kvm'>
 <name>webdevel</name>
 <uuid>13d5035a-6c13-4f90-a1f3-68f4d0f90988</uuid>
 <memory>524288</memory>
 <currentMemory>524288</currentMemory>
 <vcpu>1</vcpu>
 <os>
 <type>hvm</type>
 <boot dev='hd'/>
 </os>
 <clock offset='utc'/>
 <on_poweroff>destroy</on_poweroff>
 <on_reboot>restart</on_reboot>
 <on_crash>restart</on_crash>
 <devices>
 <disk type='block' device='disk'>
 <source dev='/dev/vg01/webdevel-disk'/>
 <target dev='hda' bus='ide'/>
 </disk>
 <interface type='bridge'>
 <mac address='00:16:3e:33:07:06'/>
 <source bridge='br0'/>
 </interface>
 <input type='mouse' bus='ps2'/>
 <graphics type='vnc' port='-1' autoport='yes' listen='0.0.0.0'/>
 </devices>
</domain>

Main changes:

• domain type
• <bootloader> lines removed
• <os> type changes to hvm and <boot> device is added
• <disk> section is changed, KVM emulated IDE bus with disks hda, hdb, hdc, hdd
• network interface changed from xenbr0 to br0 – I had to create it, as it didn’t exist

And now, I could define configuration into the KVM hypervisor and start it.

virsh define <domain>.xml
virsh start <domain>

I did some typos at first, so I had to fix configuration and run

virsh define <domain>

again to load it.

Now I connected to concole using VNC, and could see guest’s GRUB waiting for kernel choose. I have chosen the non-xen kernel, and after a while I could log into the guest host.

I checked that networking is working, and modified grub’s menu.lst to non-xen kernel by default.

Beacuse I wanted to have this guest started then machine starts, I did

virsh autostart <domain>

Some experiences I gained during migration

• virsh shutdown doesn’t shut guests gracefully, it just aborts them
• qemu-0.9.0-4 in Centos 5.4 seems to support only IDE bus, so not more than 4 disk drives can be connected. This is a problem for one of my guests, which has 6 disks attached. I have got “qemu: too many IDE bus” during start. I detached 2 drives, until I find solution. SCSI bus seems to be unsupported in this qemu version.

Reference

• Google doc: HOWTO: Migrate Hypervisor from CentOS/RHEL Xen to Ubuntu Hardy KVM
• Centos: A Quick Guide to Using KVM with CentOS-5
• HowtoForge: Virtualization With KVM On A CentOS 5.2 Server

My video card is:

05:00.0 VGA compatible controller: S3 Inc. 86c764/765 [Trio32/64/64V+] (rev 53)

Well, I found a simple workaround. Just boot Centos installer with parameters

linux vesa=1024x768 depth=16

I heard that this also helps to run Centos installer in Microsoft Virtual PC, but didn’t tried it myself.
I could use text installer, but I needed to set up LVM, and this is not available in text mode yet.

I did a fresh installation of Centos 5.2 in Xen, following by

yum update
reboot

Next, download JDK from java.sun.com (current jdk-6u7-linux-x64-rpm.bin) and install.

chmod o+x jdk-6u7-linux-x64-rpm.bin
./jdk-6u7-linux-x64-rpm.bin

Edit /etc/profile and add to the nearly end of file

export JAVA_HOME=/usr/java/default
export PATH=$PATH:$JAVA_HOME/bin
export CLASSPATH=.:$JAVA_HOME/jre/lib:$JAVA_HOME/lib:$JAVA_HOME/lib/tools.jar

and run

. /etc/profile

to export new settings.

Installing Tomcat 6

cd /tmp
wget http://ftp.sh.cvut.cz/MIRRORS/apache/tomcat/tomcat-6/v6.0.18/bin/apache-tomcat-6.0.18.tar.gz
tar xvzf apache-tomcat-6.0.18.tar.gz
mv -f apache-tomcat-6.0.18 /opt/tomcat6

Next, create user tomcat and set permissions of /opt/tomcat6
useradd -d /opt/tomcat6 -s /sbin/nologin tomcat
chown -R tomcat /opt/tomcat6

Next, create init script, edit /etc/init.d/tomcat6 and fill it with:

#!/bin/sh
#
# Startup script for jakarta tomcat
#
# chkconfig: - 85 20
# description: Tomcat running
# processname: tomcat
# pidfile: /var/run/tomcat.pid # config:# Source function library.
. /etc/rc.d/init.d/functions
# Source networking configuration.
. /etc/sysconfig/network
# Check that networking is up.
[ ${NETWORKING} = "no" ] && exit 0# Set Tomcat environment.
export JAVA_HOME=/usr/java/default
export CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar:$CATALINA_HOME/lib/servlet-api.jar
export CATALINA_HOME=/opt/tomcat6
export CATALINA_OPTS="-Dbuild.compiler.emacs=true"
export PATH=$JAVA_HOME/bin:$PATH
[ -f /opt/tomcat6/bin/startup.sh ] || exit 0 [ -f /opt/tomcat6/bin/shutdown.sh ] || exit 0
export PATH=$PATH:/usr/bin:/usr/lib/bin
# See how we were called.
case "$1" in
start)
# Start daemon.
echo -n "Starting Tomcat: "
/opt/tomcat6/bin/startup.sh
RETVAL=$?
echo
[ $RETVAL = 0 ] && touch /var/lock/subsys/tomcat ;;
stop)
# Stop daemons.
echo -n "Shutting down Tomcat: "
/opt/tomcat6/bin/shutdown.sh
RETVAL=$?
echo
[ $RETVAL = 0 ] && rm -f /var/lock/subsys/tomcat ;;
restart)
$0 stop
$0 start
;;
condrestart)
[ -e /var/lock/subsys/tomcat6 ] && $0 restart ;;
status)
status tomcat
;;
*)
echo "Usage: $0 {start|stop|restart|status}"
exit 1
esac
exit 0

Set executable flag and ensure it starts on machine boot
chmod +x /etc/init.d/tomcat6
chkconfig tomcat6 on

edit /opt/tomcat6/conf/tomcat-users.xml and modify line

<user username="tomcat" password="tomcat" roles="manager,admin"/>

Now, you should be able to start tomcat and access http://server_ip:8080/

/etc/init.d/tomcat6 start

Download JIRA Enterprise (current version 3.12.3)

cd /tmp
wget http://www.atlassian.com/software/jira/downloads/binary/atlassian-jira-enterprise-3.12.3.tar.gz
useradd --create-home -c "Jira role account" jira
mkdir -p /opt/jira
cd /opt/jira/
tar xvfz /tmp/atlassian-jira-enterprise-3.12.3-standalone.tar.gz
ln -s atlassian-jira-enterprise-3.12.3-standalone/ current
chown -R jira: /opt/jira

Create file /etc/init.d/jira

chmod +x /etc/init.d/jira
chkconfig --add jira
chkconfig jira on

Check ports in current/conf/server.xml
I changed Server port=”8002″ and Connector port=”8082″

Start Jira now and check log file

/etc/init.d/jira start
less /opt/jira/current/logs/catalina.out

If everything went all right, you should see Setup Wizard on http://serverip:8082

Setup mysql database

If you don’t have Mysql server installed, do it now.

yum install mysql-server
/etc/init.d/mysqld start
chkconfig mysqld on

Next, create database user for jira

mysql -u root -p
create database jiradb character set utf8;
grant all privileges on jiradb.* to jirauser@localhost identified by 'mypassword' with grant option;
flush privileges;
quit

Next, get MySQL/J JDBC driver and install it

cd /tmp
wget http://dev.mysql.com/get/Downloads/Connector-J/mysql-connector-java-5.1.6.tar.gz/from/http://mysql.linux.cz/
tar xvfz mysql-connector-java-5.1.6.tar.gz
cp mysql-connector-java-5.1.6/mysql-connector-java-5.1.6-bin.jar /opt/jira/current/common/lib/

Now we need to edit some configuration files to get MySQL working.

Edit /opt/jira/current/conf/server.xml and set

<Context path="" docBase="${catalina.home}/atlassian-jira" reloadable="false">
  <Resource name="jdbc/JiraDS" auth="Container" type="javax.sql.DataSource"
    username="jirauser"
    password="ji123ra"
    driverClassName="com.mysql.jdbc.Driver"
    url="jdbc:mysql://localhost/jiradb?autoReconnect=true&amp;useUnicode=true&amp;characterEncoding=UTF8"/>

Next, edit /opt/jira/current/atlassian-jira/WEB-INF/classes/entityengine.xml and set

    <datasource name="defaultDS" field-type-name="mysql"
      helper-class="org.ofbiz.core.entity.GenericHelperDAO"
      check-on-start="true"
      use-foreign-keys="false"
      use-foreign-key-indices="false"
      check-fks-on-start="false"
      check-fk-indices-on-start="false"
      add-missing-on-start="true"
      check-indices-on-start="true">

Now, restart JIRA and return back to JIRA Setup Wizzard at http://server_ip:8082

Download Linux Standalone version of Confluence at http://www.atlassian.com/software/confluence/ConfluenceDownloadCenter.jspa.

cd /tmp
wget http://www.atlassian.com/software/confluence/downloads/binary/confluence-2.9-std.tar.gz
useradd --create-home -c "Confluence role account" confluence
mkdir -p /opt/confluence
cd /opt/confluence/
tar xvzf /tmp/confluence-2.9-std.tar.gz
ln -s confluence-2.9-std/ current
chown -R confluence: /opt/confluence

Edit current/confluence/WEB-INF/classes/confluence-init.properties and set

confluence.home=/opt/confluence/home

Create file /etc/init.d/confluence

chmod +x /etc/init.d/confluence
chkconfig --add confluence
chkconfig confluence on

Check ports in current/conf/server.xml
I changed Server port=”8001″ and Connector port=”8081″

Start Confluence now and check log file

/etc/init.d/confluence start
less /opt/confluence/current/logs/catalina.out

If everything went all right, you should see Setup Wizard on http://serverip:8081

Setup mysql database

If you don’t have Mysql server installed, do it now.

yum install mysql-server
/etc/init.d/mysqld start
chkconfig mysqld on

Next, create database user for confluence

mysql -u root -p

create database confluencedb character set utf8;
grant all privileges on confluencedb.* to confluenceuser@localhost identified by 'mypassword' with grant option;
flush privileges;
quit

Next, get MySQL/J JDBC driver and install it

cd /tmp
wget http://dev.mysql.com/get/Downloads/Connector-J/mysql-connector-java-5.1.6.tar.gz/from/http://mysql.linux.cz/
tar xvfz mysql-connector-java-5.1.6.tar.gz
cp mysql-connector-java-5.1.6/mysql-connector-java-5.1.6-bin.jar /opt/confluence/current/confluence/WEB-INF/lib/

Restart Confluence

/etc/init.d/confluence restart

Navigate to Setup wizard at http://serverip:8081
Enter Licence key and click on Custom Installation
Select MySQL and click on External Database button
On the next page, click on Direct JDBC button
Change the database URL to

jdbc:mysql://localhost/confluencedb?autoReconnect=true

Enter confluenceuser to User Name and your password to Password field.
Click on Next, after a while you should see Load Content screen. You can choose how to continue here.

Debian is installed on to a 1GB Compact Flash card. Installation was made using Debian LiveCD on a WMware Workstation, with no hard-drive defined and Compact Flash card in a card reader connected via USB.

I used Debian Etch LiveCD http://debian-live.alioth.debian.org/ debian-live-etch-i386-standard.iso

Boot the Live CD and make sure your CF/microdrive is attached as /dev/sda.

Switch to root

sudo -s

Update etch, there may be some questions about aborting configuration, just say No

echo "do_initrd = Yes" >> /etc/kernel-img.conf
aptitude update && aptitude -V dist-upgrade

Set partitions of CF card, I created 2 partitions, 32MB and 512MB.

fdisk /dev/sda

Mine configuration – 1 bootable partition

Disk /dev/sda: 2500 MB, 2500485120 bytes
77 heads, 62 sectors/track, 1022 cylinders
Units = cylinders of 4774 * 512 = 2444288 bytes
Device    Boot      Start         End      Blocks   Id  System
/dev/sda1   *           1          14        33387  83  Linux
/dev/sda2              15         224       501270  83  Linux

Now we format CF card to ext2, chroot to new router environment and debootstrap debian etch into in

mkfs.ext2 /dev/sda1
mkfs.ext2 /dev/sda2
aptitude install debootstrap binutils
mount /dev/sda2 /mnt
mkdir /mnt/boot
mount /dev/sda1 /mnt/boot
debootstrap --verbose --arch i386 etch /mnt http://ftp.cz.debian.org/debian
chroot /mnt /bin/bash
echo "do_initrd = Yes" >> /etc/kernel-img.conf
mount -t proc proc /proc
mount -t devpts devpts /dev/pts
aptitude update
aptitude install locales
dpkg-reconfigure locales
aptitude install linux-image-2.6-486 openssh-server grub
mkdir /boot/grub
cp /usr/lib/grub/i386-pc/* /boot/grub

Now we configure new installation – we need to configure grub and enable console on a serial port

nano /boot/grub/menu.lst

Mine looks like this:

serial --speed=115200
terminal serial
timeout 5
default 0
title Debian router
root (hd0,0)
kernel /vmlinuz-2.6.18-6-486 root=/dev/hda2 console=ttyS0,115200n8
initrd /initrd.img-2.6.18-6-486

nano /etc/inittab

Comment out (add # at lines beginning) block of

*:*:respawn:/sbin/getty 38400 tty*

Uncomment and modify T0 line to

T0:23:respawn:/sbin/getty -L ttyS0 115200

Edit /etc/fstab:

proc /proc proc defaults 0 0
/dev/hda2 / ext2 noatime,errors=remount-ro 0 1
/dev/hda1 /boot ext2 defaults 0 1

We are done in chrooted environment, now we exit to LiveCD and install grub to boot from CF card.

umount /proc
umount /dev/pts
exit
aptitude install grub
echo '(hd0)  /dev/sda' > /mnt/boot/grub/device.map
grub-install --root-directory=/mnt /dev/sda

Now, unmount CF disk, remove it from card reader and try to boot your alix device, and login with root and no password, configure /etc/network/interfaces and so on…

umount /mnt/boot
umount /mnt