Please note that a more detailed installation procedure is described in the Ganeti installation tutorial. Refer to it if you are setting up Ganeti the first time. This quick installation guide is mainly meant as reference for experienced users. A glossary of terms can be found in the Glossary.
Before installing, please verify that you have the following programs:
These programs are supplied as part of most Linux distributions, so usually they can be installed via the standard package manager. Also many of them will already be installed on a standard machine. On Debian/Ubuntu, you can use this command line to install all required packages, except for RBD, DRBD and Xen:
$ apt-get install lvm2 ssh bridge-utils iproute iputils-arping \
ndisc6 python python-pyopenssl openssl \
python-pyparsing python-simplejson python-bitarray \
python-pyinotify python-pycurl python-ipaddr socat fping
If bitarray is missing it can be installed from easy-install:
$ easy_install bitarray
Or on newer distributions (eg. Debian Wheezy) the above becomes:
$ apt-get install lvm2 ssh bridge-utils iproute iputils-arping \
ndisc6 python python-openssl openssl \
python-pyparsing python-simplejson python-bitarray \
python-pyinotify python-pycurl python-ipaddr socat fping
Note that this does not install optional packages:
$ apt-get install python-paramiko python-affinity qemu-img
If some of the python packages are not available in your system, you can try installing them using easy_install command. For example:
$ apt-get install python-setuptools
$ cd / && sudo easy_install \
affinity
On Fedora to install all required packages except RBD, DRBD and Xen:
$ yum install openssh openssh-clients bridge-utils iproute ndisc6 \
pyOpenSSL pyparsing python-simplejson python-inotify \
python-lxm socat fping
For optional packages use the command:
$ yum install python-paramiko python-affinity qemu-img
If you want to build from source, please see doc/devnotes.rst for more dependencies.
Note
Ganeti’s import/export functionality uses socat with OpenSSL for transferring data between nodes. By default, OpenSSL 0.9.8 and above employ transparent compression of all data using zlib if supported by both sides of a connection. In cases where a lot of data is transferred, this can lead to an increased CPU usage. Additionally, Ganeti already compresses all data using gzip where it makes sense (for inter-cluster instance moves).
To remedey this situation, patches implementing a new socat option for disabling OpenSSL compression have been contributed and will likely be included in the next feature release. Until then, users or distributions need to apply the patches on their own.
Ganeti will use the option if it’s detected by the configure script; auto-detection can be disabled by explicitly passing --enable-socat-compress (use the option to disable compression) or --disable-socat-compress (don’t use the option).
The patches and more information can be found on http://www.dest-unreach.org/socat/contrib/socat-opensslcompress.html.
Starting with Ganeti 2.7, the Haskell GHC compiler and a few base libraries are required in order to build Ganeti (but not to run and deploy Ganeti on production machines). More specifically:
Some of these are also available as package in Debian/Ubuntu:
$ apt-get install ghc6 libghc6-json-dev libghc6-network-dev \
libghc6-parallel-dev libghc6-deepseq-dev
Or in newer versions of these distributions (using GHC 7.x):
$ apt-get install ghc libghc-json-dev libghc-network-dev \
libghc-parallel-dev libghc-deepseq-dev \
libghc-utf8-string-dev
In Fedora, they are available via packages as well:
$ yum install ghc ghc-json-devel ghc-network-devel \
ghc-parallel-devel ghc-deepseq-devel
If using a distribution which does not provide them, first install the Haskell platform. You can also install cabal manually:
$ apt-get install cabal-install
Then install the additional libraries via cabal:
$ cabal install json network parallel utf8-string
The compilation of the htools components is automatically enabled when the compiler and the requisite libraries are found. You can use the --enable-htools configure flag to force the selection (at which point ./configure will fail if it doesn’t find the prerequisites).
Optionally, more functionality can be enabled if your build machine has a few more Haskell libraries enabled: RAPI access to remote cluster from htools (--enable-htools-rapi), the ganeti-confd daemon (--enable-confd) and the monitoring agent (--enable-monitoring). The list of extra dependencies for these is:
These libraries are available in Debian Wheezy (but not in Squeeze, with the exception of curl), so you can use either apt:
$ apt-get install libghc-hslogger-dev libghc-crypto-dev libghc-text-dev \
libghc-hinotify-dev libghc-regex-pcre-dev libghc-curl-dev \
libghc-attoparsec-dev libghc-vector-dev libpcre3-dev
or cabal:
$ apt-get install libpcre3-dev libcurl4-openssl-dev
$ cabal install hslogger Crypto text hinotify==0.3.2 regex-pcre curl \
attoparsec vector
to install them.
The most recent Fedora doesn’t provide curl, crypto, inotify. So these need to be installed using cabal, if desired. The other packages can be installed via yum:
$ yum install ghc-hslogger-devel ghc-text-devel \
ghc-regex-pcre-devel
Note
If one of the cabal packages fails to install due to unfulfilled dependencies, you can try enabling symlinks in ~/.cabal/config.
Make sure that your ~/.cabal/bin directory (or whatever else is defined as bindir) is in your PATH.
To install, simply run the following command:
$ ./configure --localstatedir=/var --sysconfdir=/etc && \
make && \
make install
This will install the software under /usr/local. You then need to copy doc/examples/ganeti.initd to /etc/init.d/ganeti and integrate it into your boot sequence (chkconfig, update-rc.d, etc.).
Before initialising the cluster, on each node you need to create the following directories:
After this, use gnt-cluster init.