X-Git-Url: https://code.grnet.gr/git/ganeti-local/blobdiff_plain/6c4811dc68db531aa3bc45c451cb8a352a345baa..262703669afad0c57582e8666f190d374c084fe8:/INSTALL
diff --git a/INSTALL b/INSTALL
index 1f2eed9..31a08c1 100644
--- a/INSTALL
+++ b/INSTALL
@@ -1,67 +1,263 @@
-Documentation
-=============
+Ganeti quick installation guide
+===============================
-Please note that a more detailed installation procedure is described in the
-doc/install.html file. A glossary of terms can be found in the doc/admin.html
-file.
+Please note that a more detailed installation procedure is described in
+the :doc:`install`. 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 :doc:`glossary`.
Software Requirements
-=====================
+---------------------
+
+.. highlight:: shell-example
Before installing, please verify that you have the following programs:
- - Xen virtualization (version 3.0.x or 3.1)
- http://xen.xensource.com/
- - DRBD (kernel module and userspace utils), version 0.7.x or 8.0.x
- http://www.drbd.org/
- - LVM2
- http://sourceware.org/lvm2/
- - OpenSSL
- http://www.openssl.org/
- - OpenSSH
- http://www.openssh.com/portable.html
- - bridge utilities
- http://bridge.sourceforge.net/
- - iproute2
- http://developer.osdl.org/dev/iproute2
- - arping (part of iputils package)
- ftp://ftp.inr.ac.ru/ip-routing/iputils-current.tar.gz
- - mdadm (Linux Software Raid tools) (needed only with drbd 0.7.x)
- http://www.kernel.org/pub/linux/utils/raid/mdadm/
- - Python 2.4
- http://www.python.org
- - Python Twisted library (the core is enough)
- http://twistedmatrix.com/
- - Python OpenSSL bindings
- http://pyopenssl.sourceforge.net/
- - simplejson Python module
- http://www.undefined.org/python/#simplejson
- - pyparsing Python module
- http://pyparsing.wikispaces.com/
-
-For testing, you also need the YAML module for Python (http://pyyaml.org/).
-
-For building from source, you also need tar, gzip or bzip2 and make.
+- `Xen Hypervisor `_, version 3.0 or above, if
+ running on Xen
+- `KVM Hypervisor `_, 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 and above have shown good behavior).
+- `DRBD `_, kernel module and userspace utils,
+ version 8.0.7 or above; note that Ganeti doesn't yet support version 8.4
+- `RBD `_, kernel modules
+ (``rbd.ko``/``libceph.ko``) and userspace utils (``ceph-common``)
+- `LVM2 `_
+- `OpenSSH `_
+- `bridge utilities `_
+- `iproute2 `_
+- `arping `_ (part of iputils)
+- `ndisc6 `_ (if using IPv6)
+- `Python `_, version 2.4 or above, not 3.0
+- `Python OpenSSL bindings `_
+- `simplejson Python module `_
+- `pyparsing Python module `_, version
+ 1.4.6 or above
+- `pyinotify Python module `_
+- `PycURL Python module `_
+- `socat `_, see :ref:`note
+ ` below
+- `Paramiko `_, if you want to use
+ ``ganeti-listrunner``
+- `affinity Python module `_,
+ optional python package for supporting CPU pinning under KVM
+- `qemu-img `_, if you want to use ``ovfconverter``
+- `fping `_
+- `Python IP address manipulation library
+ `_
+- `Bitarray Python library `_
+
+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.
+
+.. _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
+~~~~~~~~~~~~~~~~~~~~
+
+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:
+
+- `GHC `_ version 6.12 or higher
+- or even better, `The Haskell Platform
+ `_ which gives you a simple way
+ to bootstrap Haskell
+- `json `_, a JSON library
+- `network `_, a basic
+ network library
+- `parallel `_, a parallel
+ programming library (note: tested with up to version 3.x)
+- `bytestring `_ and
+ `utf8-string `_
+ libraries; these usually come with the GHC compiler
+- `deepseq `_
+
+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).
+
+
+Haskell optional features
+~~~~~~~~~~~~~~~~~~~~~~~~~
+
+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:
+
+- `curl `_, tested with
+ versions 1.3.4 and above
+- `hslogger `_, version 1.1 and
+ above (note that Debian Squeeze only has version 1.0.9)
+- `Crypto `_, tested with
+ version 4.2.4
+- `text `_
+- `hinotify `_, tested with
+ version 0.3.2
+- `regex-pcre `_,
+ bindings for the ``pcre`` library
+- `attoparsec `_
+- `vector `_
+
+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 libprcre3-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
+
+.. _cabal-note:
+.. 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``.
Installation of the software
-============================
+----------------------------
+
+To install, simply run the following command::
-To install, simply do ``./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
-ganeti.init to /etc/init.d/ganeti and integrate it into your boot sequence
-(``chkconfig``, ``update-rc.d``, etc.).
+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.).
Cluster initialisation
-======================
+----------------------
-Before initialising the cluster, on each node you need to create the following
-directories:
+Before initialising the cluster, on each node you need to create the
+following directories:
- - /etc/ganeti
- - /srv/ganeti, /srv/ganeti/os, /srv/ganeti/export
+- ``/etc/ganeti``
+- ``/var/lib/ganeti``
+- ``/var/log/ganeti``
+- ``/srv/ganeti``
+- ``/srv/ganeti/os``
+- ``/srv/ganeti/export``
After this, use ``gnt-cluster init``.
+
+.. vim: set textwidth=72 syntax=rst :
+.. Local Variables:
+.. mode: rst
+.. fill-column: 72
+.. End: