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Archive for the 'Admin' Category

Mailing List Statistics

Recently a friend showed me the tool MailListStat to generate mailing list statistics and I thought it would be much easier to implement this in Perl or Python instead of C.
So I tried and the result is Py-MailListStat 1.0 (I am not very creative with names). Maybe someone finds it useful…

Apache 2.2.13

Apache LogoI already love the new Apache httpd version 2.2.13 because its mod_ssl finally supports the TLS extension for Server Name Indication. In other words: it allows for every name based VirtualHost to use its own HTTPS certificate.

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Murphy’s Law applied to power failures

Some observations after a power failure at my office:

  • Because of low occurence probability a UPS configuration update/test can stay an the end of a todo-list for months and years.
  • Over time too many devices are attached to one UPS.
  • On power failure the battery running time is always shorter than previously measured in self-test.
  • Some devices just do not shutdown fast enough.
  • Those devices that do shutdown correctly will have errors at startup instead.

FreeBSD 7.2

Just updated to FreeBSD 7.2 and I already like it. — Finally I can use IPv6 adresses for my jailed websites :-)

HELO-Check, die zweite

Weil ich letztens auf HELO-Checks angesprochen wurde habe ich mir nochmal angesehen was ich damit so alles filtere. Im Dezember 2007 hatte ich schonmal eine Stichprobe beschrieben und versuche nun möglichst gleich auszuwerten.

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CLT09

Und nun der obligatorische Eintrag live vom BSD-Stand auf den Chemnitzer Linux-Tagen.
Mein eigener Vortrag zu den Syslog-RFCs lief gut. Grunix hat auch schon erste Bilder.

Finally, the Syslog RFCs

Today the RFCs for the new Syslog procol and transport were published:

Automate ‘periodic daily’ e-mail reading

Many systems send status e-mails from their periodic {daily,weekly,monthly} cronjobs. But just as with log messages you probably stop reading them because there are too many mails (one or two mails per day and host) and they are very repetitious (on healthy systems they should not change too much). — This demands automation.

A simple solution is to eliminate variable fields from the periodic output and only send an e-mail if the output is different from the expected or the previous output.

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