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This document briefly describes the steps needed to install OpenVZ on your machine.
This document is also available in the following languages: [http://forum.openvz.org/index.php?t=tree&goto=35&#msg_35 French], [http://forum.openvz.org/index.php?t=tree&goto=1805&#msg_1805 German].
OpenVZ consists of a kernel, user-level tools, and VE templates. This guide tells how to install the kernel and the tools.
== Requirements ==
This guide assumes you are running recent release of Fedora Core (like FC5) or RHEL/CentOS 4. Currently, OpenVZ kernel tries to support the same hardware that Red Hat kernels support. For full hardware compatibility list, see [http://www.virtuozzo.com/en/products/virtuozzo/hcl/ Virtuozzo HCL].
== Kernel installation ==
{{Note|In case you want to recompile the kernel yourself rather than use the one provided by OpenVZ, see [[kernel build]].}}
Get the kernel binary RPM from the [http://openvz.org/download/kernel/ Download » Kernel] page. You need only one kernel RPM so please [[Kernel flavors|choose the appropriate one] depending on your hardware.
Next, install the kernel RPM you chose:
<pre>
rpm -ihv ovzkernel-name*.rpm
</pre>
{{Note|<tt>rpm -U</tt> (where <tt>-U</tt> stands for ''upgrade'') should not be used, otherwise all currently installed kernels will be uninstalled.}}
== Configuring the bootloader ==
In case GRUB is used as the boot loader, it will be configured automatically: lines similar to these will be added to the <tt>/boot/grub/grub.conf</tt> file:
<pre>
title Fedora Core (2.6.8-022stab029.1)
root (hd0,0)
kernel /vmlinuz-2.6.8-022stab029.1 ro root=/dev/sda5 quiet rhgb vga=0x31B
initrd /initrd-2.6.8-022stab029.1.img
</pre>
Change <tt>Fedora Core</tt> to <tt>OpenVZ</tt> (just for clarity reasons, so the OpenVZ kernels will not be mixed up with non OpenVZ ones). Remove extra arguments from the kernel line, leaving only the <tt>root=...</tt> parameter. The modifed portion of <tt>/etc/grub.conf</tt> should look like this:
<pre>
title OpenVZ (2.6.8-022stab029.1)
root (hd0,0)
kernel /vmlinuz-2.6.8-022stab029.1 ro root=/dev/sda5
initrd /initrd-2.6.8-022stab029.1.img
</pre>
== Configuring sysctl settings ==
There is a number of kernel parameters that should be set for OpenVZ to work correctly. These parameters are stored in <tt>/etc/sysctl.conf</tt> file. Here is the relevant part of the file; please edit it accordingly.
<pre>
# On Hardware Node we generally need
# packet forwarding enabled and proxy arp disabled
net.ipv4.ip_forward = 1
net.ipv4.conf.default.proxy_arp = 0
# Enables source route verification
net.ipv4.conf.all.rp_filter = 1
# Enables the magic-sysrq key
kernel.sysrq = 1
# TCP Explict Congestion Notification
#net.ipv4.tcp_ecn = 0
# we do not want all our interfaces to send redirects
net.ipv4.conf.default.send_redirects = 1
net.ipv4.conf.all.send_redirects = 0
</pre>
== Rebooting into OpenVZ kernel ==
Now reboot the machine and choose "OpenVZ" on the boot loader menu. If the OpenVZ kernel has been booted successfully, proceed to installing the user-level tools for OpenVZ.
== Installing the utilities ==
OpenVZ needs some user-level tools installed. Those are:
; vzctl
: A utility to control OpenVZ VPSs (create, destroy, start, stop, set parameters etc.)
; vzquota
: A utility to manage quotas for VPSs. Mostly used indirectly (by vzctl).
Download the binary RPMs of these utilities from [http://openvz.org/download/utils/ Download » Utils] and install them:
<pre>
rpm -Uhv vzctl*.rpm vzquota*.rpm
</pre>
If rpm complains about unresolved dependencies, you'll have to satisfy them first, then repeat the installation.
When all the tools are installed, start the OpenVZ subsystem.
== Starting OpenVZ ==
As root, execute the following command:
<pre>
/sbin/service vz start
</pre>
This will load all the needed OpenVZ kernel modules. This script should also start all the VPSs marked to be auto-started on machine boot (there aren't any yet).
During the next reboot, this script should be executed automatically.
== Next steps ==
OpenVZ is now set up on your machine. To load OpenVZ kernel by default, edit the default line in the /boot/grub/grub.conf file to point to the OpenVZ kernel. For example, if the OpenVZ kernel is the first kernel mentioned in the file, put it as default 0. See man grub.conf for more details.
The next step is to prepare the [[OS template]]: please continue to [[OS template cache preparation]] document.
[[Category: Installation]]
[[Category: HOWTO]]
This document is also available in the following languages: [http://forum.openvz.org/index.php?t=tree&goto=35&#msg_35 French], [http://forum.openvz.org/index.php?t=tree&goto=1805&#msg_1805 German].
OpenVZ consists of a kernel, user-level tools, and VE templates. This guide tells how to install the kernel and the tools.
== Requirements ==
This guide assumes you are running recent release of Fedora Core (like FC5) or RHEL/CentOS 4. Currently, OpenVZ kernel tries to support the same hardware that Red Hat kernels support. For full hardware compatibility list, see [http://www.virtuozzo.com/en/products/virtuozzo/hcl/ Virtuozzo HCL].
== Kernel installation ==
{{Note|In case you want to recompile the kernel yourself rather than use the one provided by OpenVZ, see [[kernel build]].}}
Get the kernel binary RPM from the [http://openvz.org/download/kernel/ Download » Kernel] page. You need only one kernel RPM so please [[Kernel flavors|choose the appropriate one] depending on your hardware.
Next, install the kernel RPM you chose:
<pre>
rpm -ihv ovzkernel-name*.rpm
</pre>
{{Note|<tt>rpm -U</tt> (where <tt>-U</tt> stands for ''upgrade'') should not be used, otherwise all currently installed kernels will be uninstalled.}}
== Configuring the bootloader ==
In case GRUB is used as the boot loader, it will be configured automatically: lines similar to these will be added to the <tt>/boot/grub/grub.conf</tt> file:
<pre>
title Fedora Core (2.6.8-022stab029.1)
root (hd0,0)
kernel /vmlinuz-2.6.8-022stab029.1 ro root=/dev/sda5 quiet rhgb vga=0x31B
initrd /initrd-2.6.8-022stab029.1.img
</pre>
Change <tt>Fedora Core</tt> to <tt>OpenVZ</tt> (just for clarity reasons, so the OpenVZ kernels will not be mixed up with non OpenVZ ones). Remove extra arguments from the kernel line, leaving only the <tt>root=...</tt> parameter. The modifed portion of <tt>/etc/grub.conf</tt> should look like this:
<pre>
title OpenVZ (2.6.8-022stab029.1)
root (hd0,0)
kernel /vmlinuz-2.6.8-022stab029.1 ro root=/dev/sda5
initrd /initrd-2.6.8-022stab029.1.img
</pre>
== Configuring sysctl settings ==
There is a number of kernel parameters that should be set for OpenVZ to work correctly. These parameters are stored in <tt>/etc/sysctl.conf</tt> file. Here is the relevant part of the file; please edit it accordingly.
<pre>
# On Hardware Node we generally need
# packet forwarding enabled and proxy arp disabled
net.ipv4.ip_forward = 1
net.ipv4.conf.default.proxy_arp = 0
# Enables source route verification
net.ipv4.conf.all.rp_filter = 1
# Enables the magic-sysrq key
kernel.sysrq = 1
# TCP Explict Congestion Notification
#net.ipv4.tcp_ecn = 0
# we do not want all our interfaces to send redirects
net.ipv4.conf.default.send_redirects = 1
net.ipv4.conf.all.send_redirects = 0
</pre>
== Rebooting into OpenVZ kernel ==
Now reboot the machine and choose "OpenVZ" on the boot loader menu. If the OpenVZ kernel has been booted successfully, proceed to installing the user-level tools for OpenVZ.
== Installing the utilities ==
OpenVZ needs some user-level tools installed. Those are:
; vzctl
: A utility to control OpenVZ VPSs (create, destroy, start, stop, set parameters etc.)
; vzquota
: A utility to manage quotas for VPSs. Mostly used indirectly (by vzctl).
Download the binary RPMs of these utilities from [http://openvz.org/download/utils/ Download » Utils] and install them:
<pre>
rpm -Uhv vzctl*.rpm vzquota*.rpm
</pre>
If rpm complains about unresolved dependencies, you'll have to satisfy them first, then repeat the installation.
When all the tools are installed, start the OpenVZ subsystem.
== Starting OpenVZ ==
As root, execute the following command:
<pre>
/sbin/service vz start
</pre>
This will load all the needed OpenVZ kernel modules. This script should also start all the VPSs marked to be auto-started on machine boot (there aren't any yet).
During the next reboot, this script should be executed automatically.
== Next steps ==
OpenVZ is now set up on your machine. To load OpenVZ kernel by default, edit the default line in the /boot/grub/grub.conf file to point to the OpenVZ kernel. For example, if the OpenVZ kernel is the first kernel mentioned in the file, put it as default 0. See man grub.conf for more details.
The next step is to prepare the [[OS template]]: please continue to [[OS template cache preparation]] document.
[[Category: Installation]]
[[Category: HOWTO]]
