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Category: Technology

Checking 3ware raid controllers over ssh with nagios

First check this to see how you enable a host to be checked with nagios over SSH. Read More »

Configuring nagios checks over SSH

I had to do a lot of fiddling before I got nagios over ssh working. I used this article as source, mostly, even though I did it differently. Read More »

Dropping all Linux disk cache

sync; echo 3 > /proc/sys/vm/drop_caches


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Making apache log files world readable

Just chmod the dir, and to make sure rotated files are also readable, change /etc/logrotate.d/apache2. The mask is defined in there. Read More »

Show privileges for mysql users

(source) To show one users privilges in mysql: Read More »

Apache rewrite rule to rewrite to sub dir

One one particular site, I wanted to rewrite all requests to a sub dir. It took me over an hour, because of some obscure problem I haven't been able to identify. Read More »

Exim cheatsheet

Lazy blogging today.

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Working with a postfix mail queue

Some useful commands when working with a postfix mailqueue: "postsuper -r ALL". Requeues all messages. "postcat [file]". Views queue files in /var/spool/bla. "postqueue". Deal with queue. Read More »

Rewrite rules to redirect to a temporary offline page

Sometimes you want to take a site offline for a while. You can put this in .htaccess or the vhost config: Read More »

Enabling authentication and SSL for Postfix on Debian

I used this document as main source. This blogpost is also useful. Read More »