Software Requirements
---------------------
+.. highlight:: shell-example
+
Before installing, please verify that you have the following programs:
- `Xen Hypervisor <http://www.xen.org/>`_, version 3.0 or above, if
- `KVM Hypervisor <http://www.linux-kvm.org>`_, version 72 or above, if
running on KVM. In order to use advanced features, such as live
migration, virtio, etc, an even newer version is recommended (qemu-kvm
- versions 0.11.X or above have shown good behavior).
+ versions 0.11.X and above have shown good behavior).
- `DRBD <http://www.drbd.org/>`_, kernel module and userspace utils,
- version 8.0.7 or above
+ version 8.0.7 or above; note that Ganeti doesn't yet support version 8.4
+- `RBD <http://ceph.newdream.net/>`_, kernel modules
+ (``rbd.ko``/``libceph.ko``) and userspace utils (``ceph-common``)
- `LVM2 <http://sourceware.org/lvm2/>`_
- `OpenSSH <http://www.openssh.com/portable.html>`_
- `bridge utilities <http://www.linuxfoundation.org/en/Net:Bridge>`_
<socat-note>` below
- `Paramiko <http://www.lag.net/paramiko/>`_, if you want automated SSH
setup; optional otherwise but manual setup of the nodes required
+- `affinity Python module <http://pypi.python.org/pypi/affinity/0.1.0>`_,
+ optional python package for supporting CPU pinning under KVM
+- `ElementTree Python module <http://effbot.org/zone/element-index.htm>`_,
+ if running python 2.4 (optional, used by the ``ovfconverter`` tool)
+- `qemu-img <http://qemu.org/>`_, if you want to use ``ovfconverter``
+- `fping <http://fping.sourceforge.net/>`_
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 DRBD and Xen::
+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-pyinotify python-pycurl socat
+ python-pyinotify python-pycurl socat \
+ python-elementtree qemu
+
+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-lxml python-paramiko socat qemu-img
+
+
+If you want to build from source, please see doc/devnotes.rst for more
+dependencies.
+
+.. _socat-note:
+.. 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.
+
+Haskell requirements
+~~~~~~~~~~~~~~~~~~~~
-If you want to also enable the `htools` components, which is recommended
-on bigger deployments (they give you automatic instance placement,
-cluster balancing, etc.), then you need to have a Haskell compiler
-installed. More specifically:
+If you want to enable the `htools` component, which is recommended on
+bigger deployments (this give you automatic instance placement, cluster
+balancing, etc.), then you need to have a Haskell compiler installed on
+your build machine (but this is not required on the machines which are
+just going to run Ganeti). More specifically:
-- `GHC <http://www.haskell.org/ghc/>`_ version 6.10 or higher
+- `GHC <http://www.haskell.org/ghc/>`_ version 6.12 or higher
- or even better, `The Haskell Platform
<http://hackage.haskell.org/platform/>`_ which gives you a simple way
to bootstrap Haskell
$ apt-get install ghc6 libghc6-json-dev libghc6-network-dev \
libghc6-parallel-dev libghc6-curl-dev
+Or in Fedora running::
+
+ $ yum install ghc ghc-json-devel ghc-network-devel ghc-parallel-devel
+
+The most recent Fedora doesn't provide ``ghc-curl``. So this needs to be
+installed using ``cabal`` or alternatively htools can be build without
+curl support.
+
Note that more recent version have switched to GHC 7.x and the packages
were renamed::
$ apt-get install ghc libghc-json-dev libghc-network-dev \
libghc-parallel-dev libghc-curl-dev
+If using a distribution which does not provide them, the first install
+the Haskell platform and then install the additional libraries via
+``cabal``::
+
+ $ cabal install json network parallel curl
+
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).
-If you want to build from source, please see doc/devnotes.rst for more
-dependencies.
+In Ganeti version 2.6, one of the daemons (``ganeti-confd``) is shipped
+in two versions: the Python default version (which has no extra
+dependencies), and an experimental Haskell version. This latter version
+can be enabled via the ``./configure`` flag ``--enable-confd=haskell``
+and a few has extra dependencies:
-.. _socat-note:
-.. 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).
+- `hslogger <http://software.complete.org/hslogger>`_, version 1.1 and
+ above (note that Debian Squeeze only has version 1.0.9)
+- `Crypto <http://hackage.haskell.org/package/Crypto>`_, tested with
+ version 4.2.4
+- `text <http://hackage.haskell.org/package/text>`_
+- ``bytestring``, which usually comes with the compiler
+- `hinotify <http://hackage.haskell.org/package/hinotify>`_
- 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.
+These libraries are available in Debian Wheezy (but not in Squeeze), so
+you can use either apt::
- Ganeti will use the option if it's detected by the ``configure``
- script; auto-detection can be disabled by explicitely passing
- ``--enable-socat-compress`` (use the option to disable compression) or
- ``--disable-socat-compress`` (don't use the option).
+ $ apt-get install libghc-hslogger-dev libghc-crypto-dev libghc-text-dev \
+ libghc-hinotify-dev
- The patches and more information can be found on
- http://www.dest-unreach.org/socat/contrib/socat-opensslcompress.html.
+or ``cabal``::
+
+ $ cabal install hslogger Crypto text hinotify
+to install them.
Installation of the software
----------------------------
To install, simply run the following command::
- ./configure --localstatedir=/var --sysconfdir=/etc && \
- make && \
- make install
+ $ ./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
projects / ganeti-local / blobdiff