Project: Apache CouchDB
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INSTALL.Unix
Apache CouchDB INSTALL.Unix
==========================

A high-level guide to Unix-like systems, inc. Mac OS X and Ubuntu.

Community installation guides are available on the wiki:

    http://wiki.apache.org/couchdb/Installation

If you are trying to build CouchDB from a git checkout rather than
a .tar.gz, see the `DEVELOPERS` file.
    
This document is the canonical source of installation
information. However, many systems have gotchas that you need to be
aware of. In addition, dependencies frequently change as distributions
update their archives. If you're running into trouble, be sure to
check out the wiki. If you have any tips to share, please also update
the wiki so that others can benefit from your experience.

Troubleshooting
---------------

There is a troubleshooting guide:

    http://wiki.apache.org/couchdb/Troubleshooting

There is a wiki for general documentation:

    http://wiki.apache.org/couchdb/

There are collection of friendly mailing lists:

    http://couchdb.apache.org/community/lists.html

Please work through these in order if you experience any problems.

Dependencies
------------

You should have the following installed:

 * Erlang OTP (>=R14B01, =<R17) (http://erlang.org/)
 * ICU                          (http://icu-project.org/)
 * OpenSSL                      (http://www.openssl.org/)
 * Mozilla SpiderMonkey (1.8.5) (http://www.mozilla.org/js/spidermonkey/)
 * GNU Make                     (http://www.gnu.org/software/make/)
 * GNU Compiler Collection      (http://gcc.gnu.org/)
 * libcurl                      (http://curl.haxx.se/libcurl/)
 * help2man                     (http://www.gnu.org/s/help2man/)
 * Python (>=2.7) for docs      (http://python.org/)
 * Python Sphinx (>=1.1.3)      (http://pypi.python.org/pypi/Sphinx)

It is recommended that you install Erlang OTP R13B-4 or above where
possible.  You will only need libcurl if you plan to run the
JavaScript test suite. And help2man is only need if you plan on
installing the CouchDB man pages.  Python and Sphinx are only required
for building the online documentation.

Debian-based Systems
~~~~~~~~~~~~~~~~~~~~

You can install the dependencies by running:

    sudo apt-get install build-essential
    sudo apt-get install erlang-base-hipe
    sudo apt-get install erlang-dev
    sudo apt-get install erlang-manpages
    sudo apt-get install erlang-eunit
    sudo apt-get install erlang-nox
    sudo apt-get install libicu-dev
    sudo apt-get install libmozjs-dev
    sudo apt-get install libcurl4-openssl-dev
    sudo apt-get install pkg-config

There are lots of Erlang packages. If there is a problem with your
install, try a different mix. There is more information on the
wiki. Additionally, you might want to install some of the optional
Erlang tools which may also be useful.

Be sure to update the version numbers to match your system's available
packages.

For up to date instructions, please see:

  http://wiki.apache.org/couchdb/Installing_on_Debian

  http://wiki.apache.org/couchdb/Installing_on_Ubuntu

Unfortunately, it seems that installing dependencies on Ubuntu is
troublesome.

RedHat-based (Fedora, Centos, RHEL) Systems
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

You can install the dependencies by running:

    sudo yum install autoconf
    sudo yum install autoconf-archive
    sudo yum install automake
    sudo yum install curl-devel
    sudo yum install erlang-asn1
    sudo yum install erlang-erts
    sudo yum install erlang-eunit
    sudo yum install erlang-os_mon
    sudo yum install erlang-xmerl
    sudo yum install help2man
    sudo yum install js-devel
    sudo yum install libicu-devel
    sudo yum install libtool
    sudo yum install perl-Test-Harness

While CouchDB builds against the default js-devel-1.7.0 included in
some distributions, it's recommended to use a more recent
js-devel-1.8.5.

Mac OS X
~~~~~~~~

To build CouchDB from source on Mac OS X, you will need to install
Xcode.

You can install the other dependencies by running:

    brew install autoconf
    brew install autoconf-archive
    brew install automake
    brew install libtool
    brew install erlang
    brew install icu4c
    brew install spidermonkey
    brew install curl
    brew install pkg-config

You will need Homebrew installed to use the `brew` command.

Learn more about Homebrew at:

    http://mxcl.github.com/homebrew/

Some versions of Mac OS X ship a problematic OpenSSL library. If
you're experiencing troubles with CouchDB crashing intermittently with
a segmentation fault or a bus error, you will need to install your own
version of OpenSSL. See the troubleshooting guide, mentioned above,
for more information.

Installing
----------

Once you have satisfied the dependencies you should run:

    ./configure

This script will configure CouchDB to be installed into `/usr/local`
by default.

If you wish to customize the installation, pass `--help` to this
script.

If everything was successful you should see the following message:

    You have configured Apache CouchDB, time to relax.

Relax.

To install CouchDB you should run:

    make && sudo make install

You only need to use `sudo` if you're installing into a system directory.

Try `gmake` if `make` is giving you any problems.

If everything was successful you should see the following message:

    You have installed Apache CouchDB, time to relax.

Relax.

First Run
---------

You can start the CouchDB server by running:

    sudo -i -u couchdb couchdb

This uses the `sudo` command to run the `couchdb` command as the
`couchdb` user.

When CouchDB starts it should eventually display the following
message:

    Apache CouchDB has started, time to relax.

Relax.

To check that everything has worked, point your web browser to:

    http://127.0.0.1:5984/_utils/index.html

From here you should run the test suite in Firefox.

Security Considerations
-----------------------

You should create a special `couchdb` user for CouchDB.

On many Unix-like systems you can run:

    adduser --system \
            --home /usr/local/var/lib/couchdb \
            --no-create-home \
            --shell /bin/bash \
            --group --gecos \
            "CouchDB Administrator" couchdb

On Mac OS X you can use the Workgroup Manager to create users:

  http://www.apple.com/support/downloads/serveradmintools1047.html

You must make sure that:

    * The user has a working POSIX shell

    * The user's home directory is `/usr/local/var/lib/couchdb`

You can test this by:

    * Trying to log in as the `couchdb` user

    * Running `pwd` and checking the present working directory

Change the ownership of the CouchDB directories by running:

    chown -R couchdb:couchdb /usr/local/etc/couchdb
    chown -R couchdb:couchdb /usr/local/var/lib/couchdb
    chown -R couchdb:couchdb /usr/local/var/log/couchdb
    chown -R couchdb:couchdb /usr/local/var/run/couchdb

Change the permission of the CouchDB directories by running:

    chmod 0770 /usr/local/etc/couchdb
    chmod 0770 /usr/local/var/lib/couchdb
    chmod 0770 /usr/local/var/log/couchdb
    chmod 0770 /usr/local/var/run/couchdb

Update the permissions for your `default.ini` file:

    chmod 0644 /usr/local/etc/couchdb/default.ini

Running as a Daemon
-------------------

SysV/BSD-style Systems
~~~~~~~~~~~~~~~~~~~~~~

You can use the `couchdb` init script to control the CouchDB daemon.

On SysV-style systems, the init script will be installed into:

    /usr/local/etc/init.d

On BSD-style systems, the init script will be installed into:

    /usr/local/etc/rc.d

We use the `[init.d|rc.d]` notation to refer to both of these
directories.

You can control the CouchDB daemon by running:

    /usr/local/etc/[init.d|rc.d]/couchdb [start|stop|restart|status]

If you wish to configure how the init script works, you can edit:

    /usr/local/etc/default/couchdb

Comment out the `COUCHDB_USER` setting if you're running as a
non-superuser.

To start the daemon on boot, copy the init script to:

    /etc/[init.d|rc.d]

You should then configure your system to run the init script
automatically.

You may be able to run:

    sudo update-rc.d couchdb defaults

If this fails, consult your system documentation for more information.

A `logrotate` configuration is installed into:

    /usr/local/etc/logrotate.d/couchdb

Consult your `logrotate` documentation for more information.

It is critical that the CouchDB logs are rotated so as not to fill
your disk.

Mac OS X
~~~~~~~~

You can use the `launchctl` command to control the CouchDB daemon.

You can load the configuration by running:

    sudo launchctl load \
         /usr/local/Library/LaunchDaemons/org.apache.couchdb.plist

You can stop the CouchDB daemon by running:

    sudo launchctl unload \
         /usr/local/Library/LaunchDaemons/org.apache.couchdb.plist

You can start CouchDB by running:

    sudo launchctl start org.apache.couchdb

You can restart CouchDB by running:

    sudo launchctl stop org.apache.couchdb

You can edit the launchd configuration by running:

    open /usr/local/Library/LaunchDaemons/org.apache.couchdb.plist

To start the daemon on boot, copy the configuration file to:

    /Library/LaunchDaemons

Consult your system documentation for more information.