Installing Deki Wiki package on Gentoo

Install PHP 5

Install the php ebuild.  Deki Wiki requires the additional modules curl, GD, PEAR and PEAR_Cache_Lite which are separate ebuilds in Gentoo.  The apache2 USE flag will take care of building mod_php.
 

# emerge -av php curl gd PEAR-Cache_Lite PEAR-PEAR 

Install MySQL

Install the mysql ebuild

# emerge -av mysql

Also in Gentoo, the default mysql install has the following setting in the mysql config file /etc/mysql/my.cnf

# security:
# using "localhost" in connects uses sockets by default
# skip-networking
bind-address                          = 127.0.0.1

The "bind-address"  line is not commented out. Please comment out that line for its needed for the dekihost to work. (see faq entry)

Setup MySQL to start automatically at boot time and start MySQL:

# rc-update add default mysql
# /etc/init.d/mysql start 

Login to mysql as root and change the root password.  Run the commands in bold below, replacing 'newpwd' with your secure password and 'host_name' with your Gentoo server's host name:
 

# mysql -u root
Welcom to the MySQL monitor.  Commands end with ; or \g
Your MySQL Connection id is #
Server version:  5.0.##-log Gentoo Linux mysql-5.0.##

Type 'help;' or '\h' for help.  Type '\c' to clear the buffer.
mysql> SET PASSWORD FOR ''@'localhost' = PASSWORD('newpwd');
mysql> SET PASSWORD FOR ''@'host_name' = PASSWORD('newpwd');

Install HTML2PS 

The HTML2PS ebuild is lacking a maintainer and is no longer supported (any volunteers?).  In the mean time you'll have to install this manually by visiting the HTML2PS homepage and following the instructions located there.
 

Install Remaining Dependencies  

Install the remaining ebuilds that don't require any sepcial configuration
 

# emerge -av mono wv pdf2html html2text htmldoc XML-Parser imagemagick

Install Apache

Apache uses the variable APACHE_MODULES in /etc/make.conf to control which modules are built.  Without this variable  a default set is provided, however, it is missing mod_proxy and mod_proxy_http.  The example below includes the default set with the addition of mod_proxy and mod_proxy_http.
 

APACHE2_MODULES="access actions alias auth auth_basic auth_digest authn_anon authn_dbd authn_dbm \
authn_default authn_file authz_dbm authz_default authz_groupfile authz_host authz_owner authz_user \
autoindex cache dav dav_fs dav_lock dbd deflate dir disk_cache env expires ext_filter file_cache \
filter headers ident imagemap include info log_config logio mem_cache mime mime_magic negotiation \
proxy proxy_ajp proxy_balancer proxy_connect proxy_http rewrite setenvif so speling status unique_id \
userdir usertrack vhost_alias"

Note:  This is probably overkill for almost any apache installation, however, you can control which modules are loaded in the httpd.conf file.

Install the apache ebuild.  Deki Wiki requires mod_proxy_html, which is a separate ebuild in Gentoo, so grab that while we're at it.
 

# emerge -av apache mod_proxy_html

In /etc/conf.d/apache2 add "-D PHP5 -D PROXY -D PROXY_HTML" to the APACHE2_OPTS environment variable.
 

edit your /etc/apache2/httpd.conf file to ensure that the proper modules are loaded.  Add the following lines to the Load Module section

LoadModule rewrite_module	modules/mod_rewrite.so
LoadModule proxy_module		modules/mod_proxy.so
LoadModule proxy_http_module    modules/mod_proxy_http.so

Note:  The default Gentoo Apache configuration will load all of the .conf files in /etc/apache2/modules.d.  The -D PROXY in /etc/conf.d/apache2 will load and configure mod_php in /etc/apache2/modules.d/70_mod_php5.conf and the -D PROXY_HTML will load the mod_proxy_html module in /etc/apache2/modules.d/27_mod_proxy_html.conf.
 

Copy the deki-apache configuration file from the Deki Wiki source directory

# cp ${DEKI_SRC}/config/deki-apache.conf \
   /etc/apache2/vhosts.d/deki-apache.include

Note:  I changed the file extension from .conf to .include during this step.  Gentoo's default Apache configuration includes everything in the /etc/apache2/vhosts.d/ directory that ends in a .conf extension automatically and I wanted a little more control over when this file gets included. 

Edit your Apache configuration file to include Deki Wiki's Apache configuration script.  Add the following to the bottom of the /etc/apache2/httpd.conf file:

Include /etc/apache2/vhosts.d/deki-apache.include 

I had to add this to the apache virtual host config in /etc/apache2/vhosts.d/ but it is probably specific to the latest Gentoo apache config, more than anything to do with Deki Wiki.
 

       <Directory />
           Options FollowSymLinks
           AllowOverride None
           Order allow,deny
           Allow from all
        </Directory> 

Wherever the Install Guide refers to "www-data," use "apache" instead since that is the user apache runs under.  You'll need to also change this in the /etc/init.d/dekihost script.

When using the web installr, http://deki-hayes/config/index.php you will need to edit index.php to comment out the section under "apache > 2.0.0" since this test fails, inappropriately saying you have a wrong version of apache installed even though you don't.  Accordingly comment out the following section so as to not run the test.  Note:  In Deki Wiki 1.9.0, the code is slightly different and can be found in ${DEKI_SRC}/Deki_Wiki_1.9.0b_Itasca_source/web/maintenance/install_utils.inc.
 

//apache > 2.0.0
//if(function_exists('apache_get_version')) {
//      $apache_ver = apache_get_version();
//      if(preg_match('/Apache\/(2\.[0-9]+\.[0-9]+)/', $apache_ver, $matches))
//              print "<li>Apache version <tt>" . htmlspecialchars( $matches[0] ) . "</tt>.</li>\n";
//      else
//             dieout("<li class='error'><strong>Fatal: Detected apache version: <tt>" . htmlspecialchars($apache_ver) . "</tt>.  Apache 2.x is required. Aborting...</strong></li></ul>");
//}

Setup Apache to start automatically at boot time:

# rc-update add default apache2 

Start Apache and make sure it works.  The default index.html file that comes with Apache should simply contain "It works!" 

# /etc/init.d/apache2 start

Install the Deki Wiki web pages

Copy the Deki Wiki web pages to your Apache htdocs directory (I'm assuming that is /var/www/localhost/htdocs, if not you'll need to change the destination path appropriately).

# cp -rp ${DEKI_SRC}/web/* /var/www/localhost/htdocs/ 

Run the Deki Wiki Web-Based Configurator

Open a web browser and go to the URL http://gentoo_host/config/index.php.  If your Apache installation is running and configured correctly you should see a page that checks for the necessary software, and allows you to specify your Deki Wiki settings.  The installer will create your MySQL database, and create some configuration files for you and instruct you to copy them to your Gentoo filesystem. 
 

The installer will have you copy the file mindtouch.host.conf.in to the /etc/dekiwiki directory.  Once this is complete, create a symbolic link named dekiwiki to the file in the /etc/conf.d directory:

# ln -s /etc/dekiwiki/mindtouch.host.conf.in /etc/conf.d/dekiwiki

The Gentoo Dream startup script /etc/init.d/dekiwiki (created below) will use the file /etc/conf.d/dekiwiki. 

The default startup file (that the installer told you to copy to /etc/dekiwiki/mindtouch.deki.host.xml) references a cache directory for the lucene search engine.  Create the directory

# mkdir /var/www/dekiwiki/bin/cache
# mkdir /var/www/dekiwiki/bin/cache/luceneindex
# chown apache:www /var/www/dekiwiki/bin/cache/luceneindex
# chmod 775 /var/www/dekiwiki/bin/cache/luceneindex

Setup the Configuration Files 

You will need to create a startup script to start the Deki Wiki Dream server automatically.  Unfortunately the Deki Wiki source doesn't come with a suitable script.  Create the file /etc/init.d/dekiwiki with your favorte editor (vi).  The following is a bare-bones example of a startup script:
 

#!/sbin/runscript
# Copyright 1999-2007 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2

opts="configtest reload"

depend() {
        need net
        use mysql apache2
        after sshd
}

configtest() {
        ebegin "Checking Dekiwiki Configuration"
        checkconfig
        eend $?
}

checkconfd() {
        if [ -z "$DEKIUSER" ]; then
                eerror "Please enter the username for the DekiWiki daemon"
                return 1
        fi

        if [ ! -f "$MONO" ]; then
                eerror "Please enter the full path to your mono binary"
                return 1
        fi

        if [ ! -d "$BIN_DIR" ]; then
                eerror "Please enter the full path to your DekiWiki bin directory"
                return 1
        fi

        if [ -z "$APIKEY" ]; then
                eerror "Please specify your APIKEY"
                return 1
        fi

        if [ -z "$PATH_PREFIX" ]; then
                PATH_PREFIX="@api"
        fi

        if [ -z "$HTTP_PORT" ]; then
                HTTP_PORT=8081
        fi

        if [ -z "$IP" ]; then
                IP="localhost"
        fi

        if [ -z "$HOST_EXE" ]; then
                HOST_EXE="$BIN_DIR/mindtouch.host.exe"
        fi
     
if [ -z "$SCRIPT" ]; then
                SCRIPT="/etc/dekiwiki/mindtouch.deki.startup.xml"
        fi
      
        if [ -z "$NOTTY" ]; then
                NOTTY="notty"
        fi
      
        if [ -z "$CONNECT_LIMIT" ]; then
                CONNECT_LIMIT="-5"
        fi
        if [ -z "$LOGDIR" ]; then
                LOGDIR="/var/log/dekiwiki"
        fi
      
        if [ -z "$LOGFILE" ]; then
                LOGFILE="${LOGDIR}/deki-api.log"
        fi
      
        if [ -z "$DEKIPID" ]; then
                DEKIPID="/var/run/dekihost.pid"
        fi
}
      
checkconfig() {
        checkconfd || return 1
}
      
start() {
        ebegin "Starting DekiWiki"
        checkconfig || return 1
        if [ ! -d "$LOGDIR" ]; then
                einfo "Creating DekiWiki log director:  $LOGDIR"
                mkdir "$LOGDIR"
        fi
        chown -R $DEKIUSER "$LOGDIR"
        MONO_ARGS="$HOST_EXE apikey $APIKEY script $SCRIPT path-prefix $PATH_PREFIX http-port $HTTP_PORT ip $IP connect-limit $CONNECT_LIMIT $NOTTY"
      
        start-stop-daemon --start --quiet --chuid ${DEKIUSER} \
                --make-pidfile --background --pidfile ${DEKIPID} \
                --exec ${MONO} -- ${MONO_ARGS} > ${LOGFILE} 2>&1
      
        eend $?
}
stop() {
        ebegin "Stopping DekiWiki"
        checkconfd || return 1
        start-stop-daemon --stop --quiet --pidfile ${DEKIPID}
        eend $?
}

Now configure the script to start automatically at boot time:

# chmod 755 /etc/init.d/dekiwiki
# rc-update add default /etc/init.d/dekiwiki

Lastly start the Deki Wiki Dream server before you visit your new Deki Wiki site

# /etc/init.d/dekiwiki start