Statistics
| Branch: | Tag: | Revision:

root / INSTALL @ 44b7a8a8

History | View | Annotate | Download (10 kB)

1
Ganeti quick installation guide
2
===============================
3

    
4
Please note that a more detailed installation procedure is described in
5
the :doc:`install`. A glossary of terms can be found in the
6
:doc:`glossary`.
7

    
8

    
9
Software Requirements
10
---------------------
11

    
12
.. highlight:: shell-example
13

    
14
Before installing, please verify that you have the following programs:
15

    
16
- `Xen Hypervisor <http://www.xen.org/>`_, version 3.0 or above, if
17
  running on Xen
18
- `KVM Hypervisor <http://www.linux-kvm.org>`_, version 72 or above, if
19
  running on KVM. In order to use advanced features, such as live
20
  migration, virtio, etc, an even newer version is recommended (qemu-kvm
21
  versions 0.11.X and above have shown good behavior).
22
- `DRBD <http://www.drbd.org/>`_, kernel module and userspace utils,
23
  version 8.0.7 or above; note that Ganeti doesn't yet support version 8.4
24
- `RBD <http://ceph.newdream.net/>`_, kernel modules
25
  (``rbd.ko``/``libceph.ko``) and userspace utils (``ceph-common``)
26
- `LVM2 <http://sourceware.org/lvm2/>`_
27
- `OpenSSH <http://www.openssh.com/portable.html>`_
28
- `bridge utilities <http://www.linuxfoundation.org/en/Net:Bridge>`_
29
- `iproute2 <http://www.linuxfoundation.org/en/Net:Iproute2>`_
30
- `arping <http://www.skbuff.net/iputils/>`_ (part of iputils)
31
- `ndisc6 <http://www.remlab.net/ndisc6/>`_ (if using IPv6)
32
- `Python <http://www.python.org/>`_, version 2.6 or above, not 3.0
33
- `Python OpenSSL bindings <http://pyopenssl.sourceforge.net/>`_
34
- `simplejson Python module <http://code.google.com/p/simplejson/>`_
35
- `pyparsing Python module <http://pyparsing.wikispaces.com/>`_, version
36
  1.4.6 or above
37
- `pyinotify Python module <https://github.com/seb-m/pyinotify>`_
38
- `PycURL Python module <http://pycurl.sourceforge.net/>`_
39
- `socat <http://www.dest-unreach.org/socat/>`_, see :ref:`note
40
  <socat-note>` below
41
- `Paramiko <http://www.lag.net/paramiko/>`_, if you want to use
42
  ``ganeti-listrunner``
43
- `affinity Python module <http://pypi.python.org/pypi/affinity/0.1.0>`_,
44
  optional python package for supporting CPU pinning under KVM
45
- `qemu-img <http://qemu.org/>`_, if you want to use ``ovfconverter``
46
- `fping <http://fping.sourceforge.net/>`_
47
- `Python IP address manipulation library
48
  <http://code.google.com/p/ipaddr-py/>`_
49
- `Bitarray Python library <http://pypi.python.org/pypi/bitarray/>`_
50

    
51
These programs are supplied as part of most Linux distributions, so
52
usually they can be installed via the standard package manager. Also
53
many of them will already be installed on a standard machine. On
54
Debian/Ubuntu, you can use this command line to install all required
55
packages, except for RBD, DRBD and Xen::
56

    
57
  $ apt-get install lvm2 ssh bridge-utils iproute iputils-arping \
58
                    ndisc6 python python-pyopenssl openssl \
59
                    python-pyparsing python-simplejson \
60
                    python-pyinotify python-pycurl socat fping
61

    
62
Note that this does not install optional packages::
63

    
64
  $ apt-get install python-paramiko python-affinity qemu-img
65

    
66
If some of the python packages are not available in your system,
67
you can try installing them using ``easy_install`` command.
68
For example::
69

    
70
  $ apt-get install python-setuptools python-dev
71
  $ cd / && sudo easy_install \
72
            affinity
73

    
74

    
75
On Fedora to install all required packages except RBD, DRBD and Xen::
76

    
77
  $ yum install openssh openssh-clients bridge-utils iproute ndisc6 \
78
                pyOpenSSL pyparsing python-simplejson python-inotify \
79
                python-lxm socat fping
80

    
81
For optional packages use the command::
82

    
83
  $ yum install python-paramiko python-affinity qemu-img
84

    
85
If you want to build from source, please see doc/devnotes.rst for more
86
dependencies.
87

    
88
.. _socat-note:
89
.. note::
90
  Ganeti's import/export functionality uses ``socat`` with OpenSSL for
91
  transferring data between nodes. By default, OpenSSL 0.9.8 and above
92
  employ transparent compression of all data using zlib if supported by
93
  both sides of a connection. In cases where a lot of data is
94
  transferred, this can lead to an increased CPU usage. Additionally,
95
  Ganeti already compresses all data using ``gzip`` where it makes sense
96
  (for inter-cluster instance moves).
97

    
98
  To remedey this situation, patches implementing a new ``socat`` option
99
  for disabling OpenSSL compression have been contributed and will
100
  likely be included in the next feature release. Until then, users or
101
  distributions need to apply the patches on their own.
102

    
103
  Ganeti will use the option if it's detected by the ``configure``
104
  script; auto-detection can be disabled by explicitly passing
105
  ``--enable-socat-compress`` (use the option to disable compression) or
106
  ``--disable-socat-compress`` (don't use the option).
107

    
108
  The patches and more information can be found on
109
  http://www.dest-unreach.org/socat/contrib/socat-opensslcompress.html.
110

    
111
Haskell requirements
112
~~~~~~~~~~~~~~~~~~~~
113

    
114
Starting with Ganeti 2.7, the Haskell GHC compiler and a few base
115
libraries are required in order to build Ganeti (but not to run and
116
deploy Ganeti on production machines). More specifically:
117

    
118
- `GHC <http://www.haskell.org/ghc/>`_ version 6.12 or higher
119
- or even better, `The Haskell Platform
120
  <http://hackage.haskell.org/platform/>`_ which gives you a simple way
121
  to bootstrap Haskell
122
- `json <http://hackage.haskell.org/package/json>`_, a JSON library
123
- `network <http://hackage.haskell.org/package/network>`_, a basic
124
  network library
125
- `parallel <http://hackage.haskell.org/package/parallel>`_, a parallel
126
  programming library (note: tested with up to version 3.x)
127
- `bytestring <http://hackage.haskell.org/package/bytestring>`_ and
128
  `utf8-string <http://hackage.haskell.org/package/utf8-string>`_
129
  libraries; these usually come with the GHC compiler
130
- `deepseq <http://hackage.haskell.org/package/deepseq>`_
131
- `curl <http://hackage.haskell.org/package/curl>`_, tested with
132
  versions 1.3.4 and above
133

    
134
Some of these are also available as package in Debian/Ubuntu::
135

    
136
  $ apt-get install ghc6 libghc6-json-dev libghc6-network-dev \
137
                    libghc6-parallel-dev libghc6-deepseq-dev \
138
                    libghc6-curl-dev
139

    
140
Or in newer versions of these distributions (using GHC 7.x)::
141

    
142
  $ apt-get install ghc libghc-json-dev libghc-network-dev \
143
                    libghc-parallel-dev libghc-deepseq-dev \
144
                    libghc-utf8-string-dev libghc-curl-dev
145

    
146
In Fedora, some of them are available via packages as well::
147

    
148
  $ yum install ghc ghc-json-devel ghc-network-devel \
149
                    ghc-parallel-devel ghc-deepseq-devel
150

    
151
If using a distribution which does not provide them, first install
152
the Haskell platform. You can also install ``cabal`` manually::
153

    
154
  $ apt-get install cabal-install
155

    
156
Then install the additional libraries via
157
``cabal``::
158

    
159
  $ cabal install json network parallel utf8-string curl
160

    
161
Haskell optional features
162
~~~~~~~~~~~~~~~~~~~~~~~~~
163

    
164
Optionally, more functionality can be enabled if your build machine has
165
a few more Haskell libraries enabled: the ``ganeti-confd`` daemon
166
(``--enable-confd``) and the monitoring daemon
167
(``--enable-mond``). The list of extra dependencies for these is:
168

    
169
- `hslogger <http://software.complete.org/hslogger>`_, version 1.1 and
170
  above (note that Debian Squeeze only has version 1.0.9)
171
- `Crypto <http://hackage.haskell.org/package/Crypto>`_, tested with
172
  version 4.2.4
173
- `text <http://hackage.haskell.org/package/text>`_
174
- `hinotify <http://hackage.haskell.org/package/hinotify>`_, tested with
175
  version 0.3.2
176
- `regex-pcre <http://hackage.haskell.org/package/regex-pcre>`_,
177
  bindings for the ``pcre`` library
178
- `attoparsec <http://hackage.haskell.org/package/attoparsec>`_
179
- `vector <http://hackage.haskell.org/package/vector>`_
180
- `snap-server` <http://hackage.haskell.org/package/snap-server>`_, version
181
  0.8.1 and above.
182

    
183
These libraries are available in Debian Wheezy (but not in Squeeze, with
184
the exception of curl), so you can use either apt::
185

    
186
  $ apt-get install libghc-hslogger-dev libghc-crypto-dev libghc-text-dev \
187
                    libghc-hinotify-dev libghc-regex-pcre-dev \
188
                    libghc-attoparsec-dev libghc-vector-dev \
189
                    libghc-snap-server-dev
190

    
191
or ``cabal``, after installing a required non-Haskell dependency::
192

    
193
  $ apt-get install libpcre3-dev
194
  $ cabal install hslogger Crypto text hinotify regex-pcre \
195
                  attoparsec vector snap-server
196

    
197
to install them.
198

    
199
In case you still use ghc-6.12, note that ``cabal`` would automatically try to
200
install newer versions of some of the libraries snap-server depends on, that
201
cannot be compiled with ghc-6.12, so you have to install snap-server on its
202
own, esplicitly forcing the installation of compatible versions::
203

    
204
  $ cabal install MonadCatchIO-transformers==0.2.2.0 mtl==2.0.1.0 \
205
                  hashable==1.1.2.0 case-insensitive==0.3 parsec==3.0.1 \
206
                  network==2.3 snap-server==0.8.1
207

    
208
The most recent Fedora doesn't provide ``crypto``, ``inotify``. So these
209
need to be installed using ``cabal``, if desired. The other packages can
210
be installed via ``yum``::
211

    
212
  $ yum install ghc-hslogger-devel ghc-text-devel \
213
                ghc-regex-pcre-devel
214

    
215
.. _cabal-note:
216
.. note::
217
  If one of the cabal packages fails to install due to unfulfilled
218
  dependencies, you can try enabling symlinks in ``~/.cabal/config``.
219

    
220
  Make sure that your ``~/.cabal/bin`` directory (or whatever else
221
  is defined as ``bindir``) is in your ``PATH``.
222

    
223
Installation of the software
224
----------------------------
225

    
226
To install, simply run the following command::
227

    
228
  $ ./configure --localstatedir=/var --sysconfdir=/etc && \
229
    make && \
230
    make install
231

    
232
This will install the software under ``/usr/local``. You then need to
233
copy ``doc/examples/ganeti.initd`` to ``/etc/init.d/ganeti`` and
234
integrate it into your boot sequence (``chkconfig``, ``update-rc.d``,
235
etc.).
236

    
237

    
238
Cluster initialisation
239
----------------------
240

    
241
Before initialising the cluster, on each node you need to create the
242
following directories:
243

    
244
- ``/etc/ganeti``
245
- ``/var/lib/ganeti``
246
- ``/var/log/ganeti``
247
- ``/srv/ganeti``
248
- ``/srv/ganeti/os``
249
- ``/srv/ganeti/export``
250

    
251
After this, use ``gnt-cluster init``.
252

    
253
.. vim: set textwidth=72 syntax=rst :
254
.. Local Variables:
255
.. mode: rst
256
.. fill-column: 72
257
.. End: