6
edits
Changes
This packege did'nt install by you for dependenses, and, Debian/Ubuntu template cahe did'nt created
Pkg-cacher is a transparent caching proxy daemon optimized for Debian and RPM packages. In other terms, pkg-cacher is a service that runs on a machine that other machines and containers, or "clients", use to update themselves instead of each of them directly hitting the package repositories. Pkg-cacher only downloads a file once and then gives that to all its clients, instead of each of the clients downloading the file from the Internet at large. It is based on [http://www.nick-andrew.net/projects/apt-cacher/ apt-cacher], available with Debian. This version has been modified to understand RedHat RPM repositories. It also adds support for the HTTP Range header and deals correctly with files which have the same name but different content on different distributions or in some cases different versions of the same distribution.
Robert has setup an RPM repository repositories for Fedora , CentOS and CentOS installs, but when this document was written there were no repositories for Ubuntu or Debian setup yet.
===Installation=Screencast==== Scott Dowdle has recorded a good screencast overview of vzpkg2 and pkg-cacher at:
For CentOS:
wget http://repo.opensource-sw.net/ossw_centoscentos/ossw.repo -P /etc/yum.repos.d
For Fedora:
wget http://repo.opensource-sw.net/ossw_fedorafedora/ossw.repo -P /etc/yum.repos.d
You may wish to edit the repository file, perhaps to add a priorities setting.
yum install vzpkg2 vztmpl2-centos vztmpl2-fedora vztmpl2-debian vztmpl2-ubuntu
yum install pkg-cacher-sa debootstrap =====<u>Configure vzpkg2</u>=====
Open /etc/vz/vzpkg.conf in an editor. Replace 'hostname' with the hostname or IP of the machine you are installing this on for VZPKG_CACHE_HOST, make sure not to use 'localhost', because this name is what OpenVZ Containers will use to access the pkg-cacher daemon:
VZPKG_DNS=192.168.1.2,192.168.1.3
=====<u>Configure pkg-cacher</u>=====
Edit /etc/pkg-cacher/pkg-cacher.conf. You should read the included documentation in the file to ensure it is appropriate for your setup. Mostly the defaults will work just fine. By default pkg-cacher will let any system use its cache. You will probably want to limit it to your own systems on the line:
allowed_hosts=*
Once you have checked and updated pkg-cacher.conf, simply restart it by running as root:
service pkg-cacher restart
=====<u>Generate the new template cache</u>=====
Now everything should be ready to go! Make sure both the 'vz' service and 'pkg-cacher' service are running.
To build an individual OS Template just run the 'vzpkgcache' command and pass it the name of the OS Template you want to build. For a list of OS Templates you can build, run the 'vzpkgls' command. Example:
vzpkgcache centos-5-i386-default
If you'd like to build all OS Templates available, just run the 'vzpkgcache' command without any parameters. Example:
vzpkgcache
vzpkg2 should get to work generating your initial caches. Now you can run 'vzctl create' and use them.
====Debian Installs:====
=====<u>Remove Old Packages</u>=====
If this is an '''existing''' install, uninstall your vzpkg and vztmpl-* packages:
apt-get erase vzpkg vzctl-ostmpl-*
and backup & remove your current template directory:
tar cjf /some/backup/location/old_templates.tbz /vz/template
rm -r /vz/template
If this is a '''new''' install, you should probably review the [http://download.openvz.org/doc/OpenVZ-Users-Guide.pdf OpenVZ User's Guide] and the wiki's [[Installation on Debian]] page. The only way you would vary your installation setups is declining to install the default vzpkg package, and instead using vzpkg2 here.
=====<u>Add the deb repositories to your /etc/apt/sources.list:</u>=====
Add the following lines to your /etc/apt/sources.list:
Etch:
deb http://repo.opensource-sw.net/debian/ etch openvz
deb-src http://repo.opensource-sw.net/debian/ etch openvz
Sarge:
deb http://repo.opensource-sw.net/debian/ sarge openvz
deb-src http://repo.opensource-sw.net/debian/ sarge openvz
Then do:
apt-get update
apt-get install pkg-cacher-sa vzpkg2
=====<u>Adding New Templates:</u>=====
Install the desired OS Template Metadata packages:
apt-get install vztmpl2-centos vztmpl2-fedora vztmpl2-ubuntu vztmpl2-debian
=====<u>Configure vzpkg2</u>=====
Open /etc/vz/vzpkg.conf in an editor. Replace 'hostname' with the hostname or IP of the machine you are installing this on for VZPKG_CACHE_HOST, make sure not to use 'localhost', because this name is what OpenVZ Containers will use to access the pkg-cacher daemon:
VZPKG_CACHE_HOST=hostname:3142
While you are here, review this file to ensure it makes sense for your setup. In particular, you will probably have to update the VZPKG_DNS line with IP addresses of DNS servers you use.
VZPKG_DNS=192.168.1.2,192.168.1.3
=====<u>Configure pkg-cacher</u>=====
Edit /etc/pkg-cacher/pkg-cacher.conf. You should read the included documentation in the file to ensure it is appropriate for your setup. Mostly the defaults will work just fine. By default pkg-cacher will let any system use its cache. You will probably want to limit it to your own systems on the line:
allowed_hosts=*
Once you have checked and updated pkg-cacher.conf, simply restart it.
=====<u>Generate the new template cache</u>=====
Now everything should be ready to go! Make sure both the 'vz' service and 'pkg-cacher' service are running
To get a list of what OS Templates you may now use, type the following:
vzpkgls
That will produce a list of available OS Templates. Use any name given in the list as a parameter to vzpkgcache to build that OS Template. Example:
vzpkgcache centos-5-i386-default
If you want to build all OS Templates you can simply run vzpkgcache without any paramters:
vzpkgcache
vzpkg2 should get to work generating your initial caches. Now you can run 'vzctl create' and use them.
===Source===
