Tag: Debian

Creating a Xen bridge with bonding on Debian

Like this, but then with bonding: Read More »
By halfgaar, 4 months ago, on March 01, 2013, at 18:03 | No comments

Creating a drbd for an existing Xen domain

I needed some VMs to be available on a backup node, which I accomplished with the distributed remote block device, or DRBD. My host machine is Debian 6. Read More »
By halfgaar, 1 year ago, on May 01, 2012, at 18:05 | 1 comment

Fixing mailscanner insecure dependancy

Mailscanner cut out on me, without errors in the log. It was only after turning on debug (which prevents backgrounding and it then only processes one batch) that it showed me. Read More »
By halfgaar, 1 year ago, on February 25, 2012, at 15:02 | No comments

Executing system commands from PHP with SUID executable.

If you want to execute system commands from something like PHP, you need a SUID executable which you can call from your PHP scripts. This is such a script. It could be extended to support parameters for the commands you want to execute, but that would be an enormous security risk, because then anybody can execute any command. If you need something as flexible as that, you need to think about adding some kind of security restrictions, like a list of allowed commands. Read More »
By halfgaar, 2 years ago, on February 02, 2011, at 16:02 | 1 comment

Allowing apache to set Nagios cmd file

On debian, to prevent: Error: Could not stat() command file ‘/var/lib/nagios3/rw/nagios.cmd’! Read More »
By halfgaar, 2 years ago, on December 28, 2010, at 23:12 | No comments

Disabling exim port 25 listening when zimbra is installed

When you're installing zimbra in an Ubuntu or Debian machine, it seems it installs the MTA in such a way that command line tools like mail and such don't work. But when you install exim, it conflicts with the postfix in Zimbra. Read More »
By halfgaar, 3 years ago, on December 12, 2010, at 19:12 | No comments

grml

grml seems like an interesting Debian-based Linux Live CD. It seems interesting because “[it] includes a collection of GNU/Linux software especially for system administrators and users of texttools.”

Read More »
By Rowan Rodrik, 3 years ago, on December 08, 2010, at 22:12 | No comments

Find all manually installed packages on a Debian system

This should find all manually installed packages on a Debian system:

aptitude search '~i!~E' | grep -v "i A" | cut -d " " -f 4 Read More »
By halfgaar, 3 years ago, on December 05, 2010, at 16:12 | No comments

Making a Debian Squeeze machine into a Xen virtual machine host

My attempts to get Xen working right on Debian stable (Lenny) were not really successful. Xen has had some interesting developments and the version in Lenny is just too old. Plus, the debian bootstrap scripts used to create images don't support Ubuntu Maverick... Squeeze (testing) has the newest Xen and deboostrap, so that's cool. I used the AMD64 architecture. Read More »
By halfgaar, 3 years ago, on November 07, 2010, at 20:11 | 1 comment

Configuring a Debian exim server for internet delivery

I wanted an Exim server which could send mail on its own without the use of another SMTP server. Read More »
By halfgaar, 3 years ago, on July 20, 2010, at 11:07 | No comments