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May 20
2010

Startup Script for Apache Tomcat on Snow Leopard HOWTO

Posted by: Marko Tomic

Tagged in: Tomcat , Railo , OS X , HOWTO , Apache

I have just set up Apache Tomcat startup script on Snow Leopard and I thought I'd blog about it while it's still fresh in my head.  Assuming you have installed Tomcat in /usr/local/tomcat directory, you can do the following to start Tomcat on system startup.

1. Create your startup script:

sudo nano /usr/local/tomcat/bin/tomcat

#!/bin/sh # Tomcat Startup Script
 
CATALINA_HOME=/usr/local/tomcat; export CATALINA_HOME
JAVA_HOME=/Library/Java/Home; export JAVA_HOME
TOMCAT_OWNER=root; export TOMCAT_OWNER
 
start() {
        echo -n "Starting Tomcat:  "
        su $TOMCAT_OWNER -c $CATALINA_HOME/bin/startup.sh
        sleep 2
}
stop() {
        echo -n "Stopping Tomcat: "
        su $TOMCAT_OWNER -c $CATALINA_HOME/bin/shutdown.sh
}
 
# See how we were called.
case "$1" in
  start)
        start
        ;;
  stop)
        stop
        ;;
  restart)
        stop
        start
        ;;
  *)
        echo $"Usage: tomcat {start|stop|restart}"
        exit
esac

Set your TOMCAT_OWNER correctly.  You should run it as a valid system user.


2. Create a symbolic link in /usr/bin for easier access

sudo ln -s /usr/local/tomcat/bin/tomcat /usr/bin/tomcat


3. Create the startup daemon which will start Tomcat when the system boots up

sudo mkdir /Library/StartupItems/tomcat
sudo nano /Library/StartupItems/tomcat/tomcat

#!/bin/sh
. /etc/rc.common
 
# The start subroutine
StartService() {
    # Insert your start command below.  
    tomcat start
}
 
# The stop subroutine
StopService() {
    # Insert your stop command(s) below.
    tomcat stop
}
 
# The restart subroutine
RestartService() {
    # Insert your start command below.
    tomcat restart
}
 
RunService "$1"


4. Create your startup parameters plist file

sudo nano /Library/StartupItems/tomcat/StartupParameters.plist

<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE plist SYSTEM "file://localhost/System/Library/DTDs/PropertyList.dtd">
<plist version="0.9">
    <dict>
        <key>Description</key>
        <string>Tomcat web server</string>
        <key>OrderPreference</key>
        <string>Late</string>
        <key>Provides</key>
        <array>
                <string>Local Web Services</string>
        </array>
        <key>Uses</key>
        <array>
                <string>SystemLog</string>
        </array>
    </dict>
</plist>

Restart your Mac and you should be sweet.

For more info on how to install Tomcat, e.g. Railo on Tomcat via Apache see my blog post on Learnosity Website. Also, have a look at Mark's version using Apache mod proxy 
 
Marko

Apr 19
2010

Zen Cart Friendly URLs

Posted by: Marko Tomic

Tagged in: Zen Cart , PHP , HOWTO , Apache

I've been exploring Zen Cart shopping cart for a long time and one thing that, I thought, needed improvement was the support for friendly URLs. Ultimate SEO URLs break my site and I needed another solution. I found this little beauty called Simple SEO URL and it works beautifully.  It's a little tricky to set up, but it's worth the effort.  Installation process will take you about 15-20 minutes.

I use Zen Cart 1.3.8a and SSU 3.8.3. If you have different version(s) the following steps may not work.

Download Simple SEO URL


Requirements
1. PHP 5
2. mod_rewrite enabled on your Apache web server

3. Zen Cart Module Manager installed


Installation
1. Unzip and upload your files to web server
2. Go to Admin==>Extras==>SSU Manager
3. Open path_to_store/.htaccess and add:

If your .htaccess file already has stuff in it, do not overwrite it.  Simply append the following

#### BOF SSU
Options +FollowSymLinks
RewriteEngine On
# Change "/zencart/ to the correct setting
# if your site is located at root folder, then you should have RewriteBase /
# Go to your include/configure.php, this value should be the same with the value of DIR_WS_CATALOG
RewriteBase /zencart/

# Deny access from .htaccess
RewriteRule ^.htaccess$ - [F]

RewriteCond %{SCRIPT_FILENAME} -f [OR]
RewriteCond %{SCRIPT_FILENAME} -d
RewriteRule .* - [L]

RewriteRule ^(.+) index.php/ [E=VAR1:,QSA,L]
#### EOF SSU

Makle sure your "RewriteBase" path is correct.


4. Set path_to_cache_folder/ssu and its subfolders permission to 0777
5. Now go to Admin==>Configuration==>Simple SEO URL to enable and configure your friendly URLs.

That's it.  You can also test your installation http://yoursite/ssu_check.php after which you can remove ssu_check.php from your server.

Marko

Nov 02
2009

MAMP vs Entropy PHP on OS X

Posted by: Marko Tomic

Tagged in: PHP , OS X , MySQL , Apache

Following my post on Snow Leopard Gotchas, I discovered another problem you might run into. SL comes with currently the latest version of PHP 5.3.0. However, not all PHP projects will play nice on v5.3.0. What you could do is:

1. build and configure an older version of PHP from source - e.g. 5.2.11
2. Install Entropy PHP (note: this will modify your SL Apache config files).
3. Or just be lazy and install MAMP (Macintosh, Apache, MySQL, PHP) in a few seconds.

I chose the last option for 5 reasons:
1. I'm lazy
2. Comes with PHP 4.4.9 & 5.2.10
3. It installs a complete package in one directory
4. It doesn't mess with my existing apache config files
5. it's easy to uninstall.

This is particularly useful for content editors who have phobia of terminal windows (I don't blame them). Hopefully some developers will find this useful too.

After you've downloaded and installed MAMP, you'll notice that the installer created /Applications/MAMP directory. Launch your MAMP Control Center, start your services and away you go.

By default, your Apache web server will run on port 8888. You can change this to port 80 in Preferences, but if you do that you will have to make sure that your OS X Web Sharing is stopped. You can stop it in System Preferences=>Sharing=>Web Sharing.

Normally your Apache virtual would be here:

/etc/apache2/users/*.conf or /etc/apache2/extra/httpd-vhosts.conf

MAMP keeps virtual hosts separately in:

/Applications/MAMP/Library/vhosts

If you ever want to uninstall MAMP, all you need to do is Trash /Applications/MAMP directory and you're done. It's simple and clean.

For more info see MAMP documentation.

Problems you may have with Entropy PHP

NOTE: always backup any .conf file you are going to modify or remove.

Entropy PHP will add a new config file in /etc/apache2/other and possibly modify your httpd.conf. If you're having problems running PHP, there could be various symptoms. The one I was seeing in apache error logs was this one:

child pid 7563 exit signal Segmentation fault (11)

I'm not sure what this means exactly, but it happens when your Entropy config file:

/etc/apache2/other/+entropy-php.conf

tries to load the problematic php module:

LoadModule php5_module /usr/local/php5/libphp5.so

To solve this, I would recommend removing all Entropy stuff and go back to your native PHP 5.3.0. You could try removing, or backing up +entropy-php.conf and uncomment the following line in your httpd.conf

LoadModule php5_module libexec/apache2/libphp5.so

Also check that this file exists:

/etc/apache2/other/php5.conf

and that it contains

<IfModule php5_module>
AddType application/x-httpd-php .php
AddType application/x-httpd-php-source .phps

DirectoryIndex index.html index.php
</IfModule>

 

Oct 25
2009

Snow Leopard Gotchas

Posted by: Marko Tomic

Tagged in: OS X , MySQL , Apache

I recently upgraded to Snow Leopard from 10.5 and everything went relatively smoothly. I was particularly pleased to see extra 13GB of hard drive space.

However, I noticed a couple of things that I wasn't so pleased about:

  1. Apache unable to start
  2. PHP disabled
  3. MySQL unable to start

I've already walked a couple of people through this, so if you run into the same problem you can try the following:

1. For some reason Snow Leopard modified the following file:

/etc/apache2/extra/httpd-ssl.conf

I was using a self-signed SSL certificate for one of my local sites, which was stored in my custom "SSL" directory. The path to my SSL cert was specified in httpd-ssl.conf, but after upgrading to Snow Leopard, that path was replaced with the default path:

SSLCertificateFile "/private/etc/apache2/server.crt"
SSLCertificateKeyFile "/private/etc/apache2/server.key"

The default .crt and .key files didn't exist on my system, hence Apache failed to start. The error I got was:

Syntax error on line 99 of /private/etc/apache2/extra/httpd-ssl.conf SSLCertificateFile: file '/private/etc/apache2/server.crt' does not exist or is empty

You actually have to type 'httpd' in your terminal window to see those errors.

2. PHP disabled.  This problem is closely related to the previous one and it is very simple to fix.  In your httpd.conf file uncomment the following line:

LoadModule php5_module libexec/apache2/libphp5.so


For some reason Snow Leopard upgrade commented this line out for me.

3. MySQL unable to start.  This one scared me a little bit as I do all of my development work on my local machine running against a local MySQL database.   I typically start my MySQL server in terminal:

sudo mysqld -u root


To my surprise, I go this:

mysqld: command not found


The problem was that the following symbolic link was deleted: {/xtypo_code}/usr/local/mysql{/xtypo_code}
mysql symbolic link points to your current version of MySQL install, typically in the same directory. In my case, that directory is here:

/usr/local/mysql-5.0.45-osx10.4-i686/


All you need to do is recreate the symbolic link and you should be able to start your MySQL server again. You can create the symbolic link in your terminal window by typing the following:

sudo ln -s /usr/local/mysql-5.0.45-osx10.4-i686/ mysql

Note: You need to cd into /usr/local/ before running the command above.

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