Installing Zend Server Community Edition on a Debian Lenny 5.0 OpenVZ container

If you want to install the Zend Server Community Edition on an existing Debian server you should do it like described here:
http://files.zend.com/help/Zend-Server-5-Community-Edition/zend-server.htm#deb_installation.htm

1) Add the following to your /etc/apt/sources.list:
deb http://repos.zend.com/zend-server/deb server non-free

2) Add the key: wget http://repos.zend.com/deb/zend.key -O- |apt-key add -

3) # apt-get update

4) # apt-get install zend-server-ce-php-5.2

5) Go to https://[servername]:10082/ZendServer to create an admin account
But here i encountered the first problem:

I just got a 503 - Service Not Available - to fix that you have to restart the Zend Server with:
# /usr/local/zend/bin/zendctl.sh restart

6) Go to https://[servername]:10082/ZendServer and enter the configuration screen
Now i was able to load https://[servername]:10082/ZendServer and create a administration account with a password.

But then, when i want to enter the admin interface i get the following error: Failed to access Web server. Please make sure that the Web server is running and listening to the correct port

So to check the status enter this:
# /usr/local/zend/bin/zendctl.sh status
[28.05.2010 17:05:33 SYSTEM] Apache is not running.
[ 28.05.2010 17:56:33 SYSTEM] watchdog for lighttpd is running.
[ 28.05.2010 17:56:33 SYSTEM] lighttpd is running.
/usr/local/zend/etc/rc.d/apache: line 116: www-browser: command not found

I found out that Zend is using lynx for the status, but it was not installed on my system.
# apt-get install lynx

When i retyped the status-info i got the following:

# /usr/local/zend/bin/zendctl.sh status
[28.05.2010 18:05:04 SYSTEM] Apache is not running.
[ 28.05.2010 18:05:04 SYSTEM] watchdog for lighttpd is running.
[ 28.05.2010 18:05:04 SYSTEM] lighttpd is running.

Looking up localhost
Making HTTP connection to localhost
Alert!: Unable to connect to remote host.

lynx: Can't access startfile http://localhost/server-status

So when i looked into /var/log/apache2/error.log i found the following entry:
Fri May 28 19:04:50 2010: [ Zend Optimizer+ (2002) Fatal Error] Unable to allocate shared memory segment of 67108864 bytes: mmap: No space left on device (28)

After some research on the web i found this post. So it turned out to be a problem on virtual environments like Virtuozzo or OpenVZ. After changing the value on the OpenVZ Host to the following it worked:

# vzctl set [OpenVZ-ID] --shmpages $(( 21504*4 )):$(( 21504*4 )) --save

Now i can configure Zend finally.

Using nmap to scan Ports

If you need to know, which ports are open on a system you can scan it with the open source tool nmap.

A simple
nmap [ip or domain]
will result in a list of open/filtered ports.

nmap -sT [ip or domain]
will scan the TCP-Ports.

nmap -sU [ip or domain]
will scan the UDP-Ports.

nmap -p 20-400 [ip or domain]
will check all ports between 20 and 400.

Installing sun-java6-doc on Debian Lenny

During installing Sun Java (now from Oracle) on Debian 5.0 the package sun-java6-doc is asking the user for downloading the docs:

This package is an installer package, it does not actually contain the
JDK documentation. You will need to go download one of the
archives:

jdk-6u12-docs.zip jdk-6u12-docs-ja.zip

(choose the non-update version if this is the first installation).
Please visit

http://java.sun.com/javase/downloads/

now and download. The file should be owned by root.root and be copied
to /tmp.

[Press RETURN to try again, 'no' + RETURN to abort]

Searching for it on the Java site results in 0 entries. But there is a way to get it working:

Download the latest jdk-docs (in my case jdk-6u18-docs.zip) to your /tmp directory and rename it to jdk-6u12-docs.zip. Now the sun-java6-doc will be satisfied.