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== Install CentOS 5 ==
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My CentOS 5 installation is a DVD install with only the "Desktop - GNOME" group selected.
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= Installation on CentOS =


On restart, a number of questions (timezone/security level/etc) are asked. At this stage set the "SELinux" option to disabled. If you skip this step, then simply modify the /etc/sysconfig/selinux file and disable selinux from there. You will need to reboot before this takes effect, but its okay to wait until you have installed the kernel before doing this (just to save some time :)
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== Install the vserver kernel ==
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=== From Linux-VServer ===


I have found using Daniel's fedora kernel rpm's work great with CentOS 5, so I downloaded the relevent kernel RPMS files
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wget -c http://rpm.hozac.com/dhozac/fedora/6/vserver/i386/kernel-2.6.20-1.2936.fc6.vs2.2.0.1.i686.rpm


Then install the kernel...


rpm -ivh kernel-2.6.20-1.2936.fc6.vs2.2.0.1.i686.rpm
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Double check the grub file to make sure its the bootable kernel (/boot/grub/grub.conf). If all is okay we are ready to restart the server.
Jump to: [[#column-one|navigation]], [[#searchInput|search]]


At this stage (before the reboot) I also modify the hosts sshd config file, so it doesn't listen to every interface on the server. This blocks any guests attempt to run sshd.
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== Contents ==
 
 
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* [[#Install_CentOS_5|<span class="tocnumber">1</span> <span class="toctext">Install CentOS 5</span>]]
* [[#Add_the_repository|<span class="tocnumber">2</span> <span class="toctext">Add the repository</span>]]
* [[#Install_the_kernel|<span class="tocnumber">3</span> <span class="toctext">Install the kernel</span>]]
* [[#Install_util-vserver|<span class="tocnumber">4</span> <span class="toctext">Install util-vserver</span>]]
* [[#Post_installation_steps|<span class="tocnumber">5</span> <span class="toctext">Post installation steps</span>]]
* [[#Install_a_guest|<span class="tocnumber">6</span> <span class="toctext">Install a guest</span>]]
 
|}
 
<span id="Install_CentOS_5"></span>
<span id="edit-install-centos-5"></span>
== <span class="editsection">[<nowiki/>[[index.php?title=Installation_on_CentOS&action=edit&section=1|edit]]]</span> <span class="mw-headline"> Install CentOS 5 </span> ==
 
My CentOS 5 installation is a DVD install with only the &quot;Desktop - GNOME&quot; group selected.
 
On restart, a number of questions (timezone/security level/etc) are asked. At this stage set the &quot;SELinux&quot; option to disabled. If you skip this step, then simply modify the /etc/sysconfig/selinux file and disable selinux from there. You will need to reboot before this takes effect, but its okay to wait until you have installed the kernel before doing this (just to save some time :)
 
<span id="Add_the_repository"></span>
<span id="edit-add-the-repository"></span>
== <span class="editsection">[<nowiki/>[[index.php?title=Installation_on_CentOS&action=edit&section=2|edit]]]</span> <span class="mw-headline"> Add the repository </span> ==
 
In order to install the necessary packages, you will have to add the repository containing them to your yum configuration. Paste the following in /etc/yum.repos.d/dhozac-vserver.repo
 
<pre>[dhozac-vserver]
name=Linux-VServer related packages for CentOS $releasever - $basearch
baseurl=http://rpm.hozac.com/dhozac/centos/$releasever/vserver/$basearch
gpgkey=http://rpm.hozac.com/conf/keys/RPM-DHOZAC-GPG-KEY</pre>
<span id="Install_the_kernel"></span>
<span id="edit-install-the-kernel"></span>
== <span class="editsection">[<nowiki/>[[index.php?title=Installation_on_CentOS&action=edit&section=3|edit]]]</span> <span class="mw-headline"> Install the kernel </span> ==


vi /etc/ssh/sshd_config
To install the kernel, run


and add the line "ListenAddress 192.168.0.1"
<pre>yum install kernel</pre>
Double check the grub file to make sure it is the bootable kernel (/boot/grub/grub.conf). If all is okay we are ready to restart the server.


At this stage (before the reboot) I also modify the hosts sshd config file, so it doesn't listen to every interface on the server. This blocks any guests attempt to run sshd.


== Install util-vserver (from source via RPM) ==
<pre>vi /etc/ssh/sshd_config</pre>
and add the line &quot;ListenAddress 192.168.0.1&quot;


At this stage I had to add some packages to my installation
<span id="Install_util-vserver"></span>
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== <span class="editsection">[<nowiki/>[[index.php?title=Installation_on_CentOS&action=edit&section=4|edit]]]</span> <span class="mw-headline"> Install util-vserver </span> ==


sudo yum install rpm-build gcc-c++ e2fsprogs-devel beecrypt-devel doxygen tetex-latex
To install util-vserver, run
wget ftp://rpmfind.net/linux/fedora/extras/5/i386/dietlibc-0.30-1.fc5.i386.rpm
wget ftp://rpmfind.net/linux/fedora/extras/5/i386/dietlibc-lib-0.30-1.fc5.i386.rpm
sudo yum localinstall dietlibc-0.30-1.fc5.i386.rpm dietlibc-lib-0.30-1.fc5.i386.rpm


Now we are ready to make the util-vserver rpm's
<pre>yum install util-vserver{,-core,-lib,-sysv,-build}</pre>
<span id="Post_installation_steps"></span>
<span id="edit-post-installation-steps"></span>
== <span class="editsection">[<nowiki/>[[index.php?title=Installation_on_CentOS&action=edit&section=5|edit]]]</span> <span class="mw-headline"> Post installation steps </span> ==


wget -c http://ftp.linux-vserver.org/pub/utils/util-vserver/util-vserver-0.30.213.tar.bz2
Make certain /proc entries visible
rpmbuild -tb util-vserver-0.30.213.tar.bz2


And finally, install the new rpms
<pre>/etc/init.d/vprocunhide start</pre>
<span id="Install_a_guest"></span>
<span id="edit-install-a-guest"></span>
== <span class="editsection">[<nowiki/>[[index.php?title=Installation_on_CentOS&action=edit&section=6|edit]]]</span> <span class="mw-headline"> Install a guest </span> ==


sudo yum localinstall /usr/src/redhat/RPMS/i386/util-vserver*
As root, try the following to test your installation (this example installs a CentOS 5 guest)


== Post installation steps ==
<pre>vserver testing01 build -m yum --context 4040 --hostname=test01.test.loc \
--interface eth0=eth0:192.168.101.101/255.255.0.0 -- -d centos5</pre>
yum will install the minimal packages now. If you see something like


Make certain /proc entries visable (required every boot, so install the vprocunhide start script on boot)
<pre>    /usr/lib/util-vserver/distributions/centos5/initpost: line 105:  3587 Killed
    $_VSERVER &quot;$vserver&quot; exec bash -c ': &gt;/tmp/startwait' &gt;&amp;/dev/null</pre>
Don't worry, it's okay.


sudo /sbin/chkconfig --add vprocunhide
At this point you should be able to start and enter your vserver install. To start the guest do,
sudo /etc/init.d/vprocunhide start


== Install a guest ==
<pre>vserver testing01 start</pre>
And to enter the guest, do


As root, try the following to test your installation (this example installs a fedora core 6 guest)
<pre>vserver testing01 enter</pre>
If you want to manage the packages inside the guest, you will have to install some package management programs as well as internalize the RPM database. This can be achieved by


sudo vserver testing01 build -m yum --context 4040 --hostname=test01.test.loc \
<pre>vyum testing01 -- install yum
--interface eth0=eth0:192.168.101.101/255.255.0.0 -- -d centos5
vserver testing01 pkgmgmt internalize</pre>
Depending on your host distribution, you may also need to do


yum will install the minimal packages now. After the yum process completes i got this error:
<pre>vserver testing01 exec bash -c &quot;rm -f /var/lib/rpm/__db*; rpm --rebuilddb&quot;</pre>
You'll know it's required if a simple ''rpm -qa'' inside the guest complains about a database version mismatch.


    /usr/lib/util-vserver/distributions/fc6/initpost: line 105:  3587 Killed
To get back to the host, just exit the shell.
    $_VSERVER "$vserver" exec bash -c ': >/tmp/startwait' >&/dev/null


Some part of the script is broken it seems, but it won't affect the install. At this point you must be able to start and enter your vserver install. To start it the vserver do,
If all goes well you now have a working setup :)


  sudo vserver testing01 start
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And to enter the vserver, do
Retrieved from &quot;http://wiki.linux-vserver.org/Installation_on_CentOS&quot;


  sudo vserver testing01 enter
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Now you must be inside the centos5 install, you can start installing the packages you need now.
In case yum is not installed, you can do it via the following in the host system


  sudo vyum testing01 -- install yum


To get out of the vserver to the host you should use
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  Ctrl+d
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If all goes well you now have a working setup :)
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Latest revision as of 00:44, 11 November 2025

Installation on CentOS[edit]

From Linux-VServer[edit]


Jump to: navigation, search

Contents[edit]

[edit] Install CentOS 5 [edit]

My CentOS 5 installation is a DVD install with only the "Desktop - GNOME" group selected.

On restart, a number of questions (timezone/security level/etc) are asked. At this stage set the "SELinux" option to disabled. If you skip this step, then simply modify the /etc/sysconfig/selinux file and disable selinux from there. You will need to reboot before this takes effect, but its okay to wait until you have installed the kernel before doing this (just to save some time :)

[edit] Add the repository [edit]

In order to install the necessary packages, you will have to add the repository containing them to your yum configuration. Paste the following in /etc/yum.repos.d/dhozac-vserver.repo

[dhozac-vserver]
name=Linux-VServer related packages for CentOS $releasever - $basearch
baseurl=http://rpm.hozac.com/dhozac/centos/$releasever/vserver/$basearch
gpgkey=http://rpm.hozac.com/conf/keys/RPM-DHOZAC-GPG-KEY

[edit] Install the kernel [edit]

To install the kernel, run

yum install kernel

Double check the grub file to make sure it is the bootable kernel (/boot/grub/grub.conf). If all is okay we are ready to restart the server.

At this stage (before the reboot) I also modify the hosts sshd config file, so it doesn't listen to every interface on the server. This blocks any guests attempt to run sshd.

vi /etc/ssh/sshd_config

and add the line "ListenAddress 192.168.0.1"

[edit] Install util-vserver [edit]

To install util-vserver, run

yum install util-vserver{,-core,-lib,-sysv,-build}

[edit] Post installation steps [edit]

Make certain /proc entries visible

/etc/init.d/vprocunhide start

[edit] Install a guest [edit]

As root, try the following to test your installation (this example installs a CentOS 5 guest)

vserver testing01 build -m yum --context 4040 --hostname=test01.test.loc \
--interface eth0=eth0:192.168.101.101/255.255.0.0 -- -d centos5

yum will install the minimal packages now. If you see something like

    /usr/lib/util-vserver/distributions/centos5/initpost: line 105:  3587 Killed
    $_VSERVER "$vserver" exec bash -c ': >/tmp/startwait' >&/dev/null

Don't worry, it's okay.

At this point you should be able to start and enter your vserver install. To start the guest do,

vserver testing01 start

And to enter the guest, do

vserver testing01 enter

If you want to manage the packages inside the guest, you will have to install some package management programs as well as internalize the RPM database. This can be achieved by

vyum testing01 -- install yum
vserver testing01 pkgmgmt internalize

Depending on your host distribution, you may also need to do

vserver testing01 exec bash -c "rm -f /var/lib/rpm/__db*; rpm --rebuilddb"

You'll know it's required if a simple rpm -qa inside the guest complains about a database version mismatch.

To get back to the host, just exit the shell.

If all goes well you now have a working setup :)