Update: I’ve released an updated version of AutoTracOnDreamHost.

I’ve made a few updates to the original AutoTracOnDreamHost.  They are:

• Bumped up to Trac 0.11.2, just released last weekend.
• The python version you use is now a config option in configure.inc – though Trac 0.11.2 proper requires python2.4, this is expected to be fixed in Trac 0.11.2.1.
• If DH has installed setuptools on your machine, now AutoTracOnDreamHost doesn’t use it, as it may be too far out of date to install the latest and greatest mysqldb, genshi, or pygments.
• Minor edits to the README.

Questions?  Bugs?  Please use the comments. Enjoy!

README:

AutoTracOnDreamHost: README

#################### LICENSE #####################

AutoTracOnDreamHost is free software: you can redistribute
it and/or modify it under the terms of the GNU General Public
License as published by the Free Software Foundation, either
version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

http://www.gnu.org/licenses/gpl-3.0.html

#################### HowTo #######################

Preliminaries:

  1. Assuming you're going to use this with SVN, you need to already
     have an SVN repository setup and running.  The webserver needs
     to have at least read permissions to the repository.

  2. You need to have a complete domain/subdomain set up to use
     with trac or a subdirectory of an existing domain.

  3. A MySQL database ready to use with trac.  This doesn't have to
     be it's own database, but AFAIK, there is no good reason not
     to give each trac site it's own database.

  4. Trac 0.11.2.0 requires python 2.4, not 2.3.  Trac 0.11.2.1 (not
     out as of this writing) should fix this
     (http://trac.edgewall.org/ticket/7801).

  5. To avoid permission failings by apache, it's best to install this
     using the same user as you have apache doing it's cgi stuff under (If
     you didn't change anything from the dreamhost default - then you have
     only one user and you can ignore this step.)

Do once:

  1. Edit the configure.inc:

     - you probably want the latest and greatest of Trac, Genshi,
       MySQLDB, and Pygments.  Minor version releases of these
       shouldn't break this script.
     - alter the trac directory structure to your liking, or just
       run with my setup.

  2. Run the backend.sh.  This will set up all the parts of trac that
     are shared between all your trac sites (even if you have only one).

Do once per trac site:

  1. Run the site.sh.  This script will query you for details about
     the configuration of your database, your directory structure,
     svn repository, an admin trac user etc.

  2. Test it! Go to your new trac url and log in, browse the svn
     repository, create a dummy ticket etc.

#################### Help Me! ####################

I'll post about any major updates or known bugs on my blog.
http://blog.fogel.ca  In event of enough interest in these
scripts, I'll set up a public repository for it so we can
all contribute.

If you find any major bugs or want to submit a patch, you can
email me which is my first name (mike) at my domain (fogel.ca).
Requests for personalized help will be answered in the limit
of infinite free time, which I don't have, so no promises.

Elsewise, the best conglomeration of information about Trac
on DreamHost AFAIK is currently at on the DreamHost wiki.
http://wiki.dreamhost.com/Trac

##################################################

configure.inc:

# AutoTracOnDreamHost: configure.inc
# Released under GLPv3. http://www.gnu.org/licenses/gpl-3.0.html
# Copyright 2008 Michael Fogel. http://fogel.ca

# Abort on any errors
set -e

PYTHON_VERS=2.4
TRAC_VERS=0.11.2
GENSHI_VERS=0.5.1
MYSQLDB_VERS=1.2.2
PYGMENTS_VERS=0.11.1

# trac dir structure
TRAC_ROOT="${HOME}/trac"
PKG=${TRAC_ROOT}/packages
EGG=${TRAC_ROOT}/egg_cache
INSTALL=${TRAC_ROOT}/install
SITES=${TRAC_ROOT}/sites
SVN=${HOME}/svn
TRAC_SITE_PACKAGES=${PKG}/lib/python${PYTHON_VERS}/site-packages
TRAC_HTDOCS=${TRAC_SITE_PACKAGES}/Trac-${TRAC_VERS}-py${PYTHON_VERS}.egg/trac/htdocs

EXP_CMD1="export PYTHONPATH=$TRAC_SITE_PACKAGES"
EXP_CMD2="export PYTHON_EGG_CACHE=$EGG"
EXP_CMD3="export LD_LIBRARY_PATH=$PKG/lib"
EXP_CMD4="export PATH=$PKG/bin:\$PATH"

cat <<OutputDreamTracInstallReminder

==== Put the following in your ~/.bash_profile ====
Where trac/packages=PKG
$EXP_CMD1
$EXP_CMD2
$EXP_CMD3
$EXP_CMD4
===================================================

OutputDreamTracInstallReminder

# modify those env vars for the duration of this script too.
$EXP_CMD1
$EXP_CMD2
$EXP_CMD3
if [[ "$PATH" != *"$PKG/bin"* ]]; then export PATH=$PKG/bin:$PATH; fi

# Update version information here and DIRs below.

TRAC=http://ftp.edgewall.com/pub/trac/Trac-${TRAC_VERS}.tar.gz
GENSHI=http://ftp.edgewall.com/pub/genshi/Genshi-${GENSHI_VERS}.tar.gz
SETUPTOOLS=http://peak.telecommunity.com/dist/ez_setup.py
MYSQLDB=http://switch.dl.sourceforge.net/sourceforge/mysql-python/MySQL-python-${MYSQLDB_VERS}.tar.gz
PYGMENTS=http://pypi.python.org/packages/source/P/Pygments/Pygments-${PYGMENTS_VERS}.tar.gz

TRACDIR=Trac-${TRAC_VERS}
GENSHIDIR=Genshi-${GENSHI_VERS}
MYSQLDBDIR=MySQL-python-${MYSQLDB_VERS}
PYGMENTSDIR=Pygments-${PYGMENTS_VERS}

#### function getInupt - used primarily in site.sh #####
# arg 1: message
# arg 2: initial value
function getInput {
  MES="$1"
  eval "VAL=\$$2"
  echo ""
  echo "Press enter to accept the current value, or input a new value."
  TMP="$VAL"
  while [[ -n "$TMP" ]]; do
    VAL="$TMP"
    echo "$MES: $VAL"
    read TMP
  done
  echo "Using $MES: $VAL"
  eval "$2=\"$VAL\""
}

backend.sh:

# AutoTracOnDreamHost: backend.sh
# Released under GLPv3. http://www.gnu.org/licenses/gpl-3.0.html
# Copyright 2008 Michael Fogel. http://fogel.ca

source ./configure.inc

echo -e "\n==== Creating need dir structure ===="
[ ! -d ${PKG} ] && mkdir -p ${PKG}
# the egg_cache dir must be writable by your apache cgi/python user
[ ! -d ${EGG} ] && mkdir -p ${EGG} && chmod 770 ${EGG}
[ ! -d ${INSTALL} ] && mkdir -p ${INSTALL}
[ ! -d ${SITES} ] && mkdir -p ${SITES}

echo -e "\n==== Retrieving installation files ===="
cd ${INSTALL}
[ ! -f ${TRACDIR}.tar.gz ] && wget ${TRAC}
[ ! -f ${GENSHIDIR}.tar.gz ] && wget ${GENSHI}
[ ! -f ${MYSQLDBDIR}.tar.gz ] && wget ${MYSQLDB}
[ ! -f ${PYGMENTSDIR}.tar.gz ] && wget ${PYGMENTS}
[ ! -f ez_setup.py ] && wget ${SETUPTOOLS}

echo -e "\n==== Installing Setup Tools ===="
#Create site-packages directory. Script will fail without it.
mkdir -p ${TRAC_SITE_PACKAGES}
cd ${INSTALL} && python ez_setup.py --prefix=${PKG}

echo -e "\n==== Installing Pygments ===="
cd ${INSTALL} && tar xzf ${PYGMENTSDIR}.tar.gz
cd ${PYGMENTSDIR} && python setup.py install --prefix=${PKG}

echo -e "\n==== Installing MYSQLdb ===="
cd ${INSTALL} && tar xzf ${MYSQLDBDIR}.tar.gz
cd ${MYSQLDBDIR} && python setup.py install --prefix=${PKG}

echo -e "\n==== Installing Genshi ===="
cd ${INSTALL} && tar xzf ${GENSHIDIR}.tar.gz
cd ${GENSHIDIR} && python setup.py install --prefix=${PKG}

echo -e "\n==== Installing Trac ===="
cd ${INSTALL} && tar xzf ${TRACDIR}.tar.gz
cd ${TRACDIR} && python setup.py install --prefix=${PKG}
mkdir -p ${PKG}/share/trac
cp -fr ${INSTALL}/${TRACDIR}/cgi-bin ${PKG}/share/trac

echo -e "\n==== Setting permissions for Trac htdocs ===="
DIR=${TRAC_HTDOCS}
while [ "$DIR" != "$HOME" ]; do
  chmod o+x $DIR
  DIR=`dirname $DIR`
done
find ${TRAC_HTDOCS} -type d -exec chmod 751 {} \;
find ${TRAC_HTDOCS} -type f -exec chmod 644 {} \;

echo -e "\n==== Backend install complete ===="

site.sh:

# AutoTracOnDreamHost: site.sh
# Released under GLPv3. http://www.gnu.org/licenses/gpl-3.0.html
# Copyright 2008 Michael Fogel. http://fogel.ca

source ./configure.inc

# Prompt for project parameters, with defaults
PROJECT=somesvnproject;         getInput "Subversion Project ID"  PROJECT
DOMAIN=trac.somedomain.com;     getInput "Domain for Trac"        DOMAIN
DOMAINDIR=${HOME}/http/$DOMAIN; getInput "Path for domain root"   DOMAINDIR
TRACPATH=/trac;                 getInput "Relative Path for Trac" TRACPATH
MYSQLHOST=mysql.$DOMAIN;        getInput "MySQL hostname"         MYSQLHOST
MYSQLUSER=trac_username;        getInput "MySQL username"         MYSQLUSER
MYSQLPASSWD=trac_password;      getInput "MySQL password"         MYSQLPASSWD
MYSQLDBNAME=trac_$PROJECT;      getInput "MySQL DB name"          MYSQLDBNAME
TRAC_USER=admin;                getInput "Trac Admin username"    TRAC_USER
TRAC_PASSWORD=password;         getInput "Trac Admin password"    TRAC_PASSWORD

# confirm those values
echo "Please confirm the values you entered:"
echo "PROJECT:${PROJECT}"
echo "DOMAIN:${DOMAIN}"
echo "DOMAINDIR:${DOMAINDIR}"
echo "TRACPATH:${TRACPATH}"
echo "MYSQLHOST:${MYSQLHOST}"
echo "MYSQLUSER:${MYSQLUSER}"
echo "MYSQLPASSWD:${MYSQLPASSWD}"
echo "MYSQLDBNAME:${MYSQLDBNAME}"
echo "TRAC_USER:${TRAC_USER}"
echo "TRAC_PASSWORD:${TRAC_PASSWORD}"
echo "Look good?"
lookingGood=Yes;
getInput "Looking good? 'Yes' to continue, all else to quit." lookingGood
[ "$lookingGood" != "Yes" ] && exit 1;

# Vars for this site
WEBDIR=${DOMAINDIR}/${TRACPATH}
INDEX_CGI=${WEBDIR}/index.cgi
TRACINI=${SITES}/${PROJECT}/conf/trac.ini
HTACCESS=${WEBDIR}/.htaccess
HTPASSWD=${WEBDIR}/.htpasswd
NAME="Trac: ${DOMAIN}${TRACPATH}/"

echo "Setup site"
if [ ! -d ${SITES}/${PROJECT} ]; then

  #Setup Trac Environment for MySQL
  ${PKG}/bin/trac-admin ${SITES}/${PROJECT} \
    initenv ${PROJECT} \
    "mysql://${MYSQLUSER}:${MYSQLPASSWD}@${MYSQLHOST}/${MYSQLDBNAME}" \
    svn \
    ${SVN}/${PROJECT};

  # set admin user to premissions
  ${PKG}/bin/trac-admin ${SITES}/${PROJECT} \
  permission add $TRAC_USER TRAC_ADMIN
fi

echo "Make Trac Web Accessible"
# Make Trac Web Accessible
mkdir -p ${WEBDIR}
chmod 751 ${WEBDIR}

if [ -f "${INDEX_CGI}" ]; then
  rm ${INDEX_CGI}
fi
echo "#!/bin/bash" >> ${INDEX_CGI}
echo "export HOME=\"/home/${USER}\"" >> ${INDEX_CGI}
echo "export TRAC_ENV=\"$SITES/${PROJECT}\"" >> ${INDEX_CGI}
echo "$EXP_CMD1" >> ${INDEX_CGI}
echo "$EXP_CMD2" >> ${INDEX_CGI}
echo "$EXP_CMD3" >> ${INDEX_CGI}
echo "$EXP_CMD4" >> ${INDEX_CGI}
echo "exec $PKG/share/trac/cgi-bin/trac.cgi" >> ${INDEX_CGI}
chmod 755 ${INDEX_CGI}

# logo in trac.ini
sed -i "s/^alt = .*$/alt = trac_banner.png/" ${TRACINI}
# some fancy sed to escape forward slashes... simplier patches are welcome.
TRACPATH_S=`echo ${TRACPATH} | sed -e "s/\/$//" -e "s/\//\\\\\\ \//g" -e "s/ \//\//g"`
sed -i "s/^src = .*$/src = ${TRACPATH_S}\/chrome\/common\/trac_banner.png/"${TRACINI}

#Pretty URLs
mkdir -p ${WEBDIR}/chrome
chmod 751 ${WEBDIR}/chrome
ln -sf ${TRAC_HTDOCS} ${WEBDIR}/chrome/common

# .htaccess fun
if [ -f ${HTACCESS} ]; then
  rm ${HTACCESS}
fi

touch ${HTACCESS}
chmod 644 ${HTACCESS}

echo "AuthType Basic" >> ${HTACCESS}
echo "AuthUserFile ${HTPASSWD}" >> ${HTACCESS}
echo "AuthName '${NAME}'" >> ${HTACCESS}
echo "require valid-user" >> ${HTACCESS}
echo "" >> ${HTACCESS}
echo "DirectoryIndex index.cgi" >> ${HTACCESS}
echo "Options ExecCGI FollowSymLinks" >> ${HTACCESS}
echo "" >> ${HTACCESS}
echo "" >> ${HTACCESS}
echo "RewriteEngine On" >> ${HTACCESS}
echo "RewriteCond %{REQUEST_FILENAME} !-f" >> ${HTACCESS}
echo "RewriteCond %{REQUEST_FILENAME} !-d" >> ${HTACCESS}
echo "RewriteRule ^(.*)\$ ${TRACPATH}/index.cgi/\$1 [L]" >> ${HTACCESS}
echo "" >> ${HTACCESS}

#Create .htpasswd file for trac admin with password
htpasswd -bc ${HTPASSWD} $TRAC_USER "$TRAC_PASSWORD"

# Note: on DreamHost you avoid a world-readable htpasswd file by
# setting one up via panel.dreamhost.com->Goodies->Htaccess/WebDAV.
# This will make htpasswd and htaccess files (overwriting anything
# that's there) that has group dhapache, is group readable, and
# the apache user is in the dhapache group.  Baring this, you need
# to make your htpasswd file word-readable (or email support for
# some chgrp action as root)
chmod 644 ${HTPASSWD}

echo ---------- SITE INSTALL COMPLETE! ----------