One of my dedicated servers was in bad need of major LVM surgery today. Since the rescue system delivered with the server by the housing provider suffers from lack of LVM support, I needed to pull a creative stunt with grub and grml to accomplish this.
Continue reading "using grml to prepare LVM surgery"I keep wondering why people keep writing HUB, WEB and SPAM, where the correct technical terms are Hub, Web and Spam. Neither of the three expressions is an acronym.
Well, SPAM is, but Spiced Pork and Ham is a Trademark of Hormel Industries, and they ask people not to use their trademark to talk about Unsolicited Commercial/Bulk E-Mail on the Internet. They do, however, allow the expression Spam to be used for UCE/UBE.
Any idea why people keep treating Hub and Web as an acronym? It disturbes my reading tremendously.
Ich habe damals entgegen meiner Ankündigung meinen Hetzner DS1000 nicht gekündigt und das System als torres.zugschlus.de in Betrieb genommen. Dabei wäre es geblieben, wenn nicht Hetzner zum 1. April 2007 den Preis für den DS1000 von 19,90 auf 29,90 Euro erhöhen würde.
Das habe ich zum Anlass genommen, einkaufen zu gehen und bin diesmal bei First Dedicated gelandet. Dort gibt es - nach Anwendung eines Einkaufstricks - einen Celeron 2400 mit 512 MB und 80 GB Platte für 19,90 Euro im Monat. Das ist eine ganz ähnliche Maschine wie der Strato-Powerserver, für den ich 29 Euro im Monat bezahle. Für zehn Euro weniger Geld gibt es auch eine ganze Menge weniger Leistung. You get what you pay for.
Continue reading "First Dedicated Power Server S Limited Edition"the other day, on ICQ:
K: "What are you doing today?"
Me: "Taking some training in using a commercial spam filter appliance."
K: "It's all Spam. Autodelete everything."
Next thing I remember was the trainer asking why I was laughing so hysterically.
After asking for useable CA Software, I have finally settled on using EasyRSA. This is what I did to come across the packaging shortcomings of EasyRSA in Debian.
Continue reading "EasyRSA on Debian for an OpenVPN CA"
Description: SMTP command-line test tool swaks (Swiss Army Knife SMTP) is a command-line tool written in Perl for testing SMTP setups; it supports STARTTLS and SMTP AUTH (PLAIN, LOGIN, CRAM-MD5, SPA, and DIGEST-MD5). swaks allows to stop the SMTP dialog at any stage, e.g to check RCPT TO: without actually sending a mail. . If you are spending too much time iterating "telnet foo.example 25" swaks is for you.
A very important tool which makes debugging e-mail a breeze. A must for every mail admin.
Ich sitze hier gerade in einem Vortrag über Open Source im Auswärtigen Amt. Der erste Satz, den ich - knapp zehn Minuten zu spät kommend - auf der Folie sehe, ist "Debian als führendes Betriebssysem".
Auf der nächsten Folie steht dann "Nagios, Munin als Ablösung für HP OpenView". Ich glaube, mein Tag ist gerettet.
Dear Lazyweb, in late 2001, I bought a shiny new computer to replace my VHS VCR and to finally help me in getting my last 200 hours worth of music form analog audio tapes into the digital domain. I have to admit that I have failed to do this.
While the TV ambitions were originally spoiled with the rotten Windows TV software that came with the Hauppauge PVR PCI card, audio with windows used to work rather decently. Until I decided to ditch Windows and to use Linux. Which looks like a mistake. Not even the audio stuff works any more.
I have bought a new TV card and a new sound card, but all I currently get (with the old sound card, btw) are audio recordings that sound way too fast.
Continue reading "Recording digital audio with Linux impossible?"Die DSL-Router aus Thomsons SpeedTouch-Serie genießen den Ruf, eine ausgezeichnete Modembaugruppe zu haben und außerdem auch als reines Modem betreibbar zu sein. Das war für mich genug Grund, mir mal so ein Gerät aus der Nähe anzugucken.
Continue reading "SpeedTouch 536i"relativ neu: Von Kindern geschraubt die noch weniger wissen als die Alten.
Quelle: Dietz Pröpper in dasr (<2224939.d8E1qJU1S8@rotfl.franken.de>).
relativ neu:Aus n+1 Quellen mit alten Fehlern zusammengestellt.
Quelle: Helmut Springer in dasr (<mT3pqjceIt5fN254@delta.citecs.de>).
Unter dem tag "fdi" veröffentliche ich in loser Folge Fachbegriffe der Informatik im Stile der von Lutz geführten Liste
Alle Artikel aus dieser Gruppe im Blog-Layout gibt es hier; und den RSS-Feed hier.
Zwischen Weihnachten und Neujahr war ich in Berlin auf dem 23. Chaos Communication Congress. Und bin mit gemischten Gefühlen wieder gefahren.
Continue reading "23c3 - Who can you trust"For nearly two years, I have been pondering about a good and failure-resilient DNS setup to implement for my own domains. In the last days, I have set the first prototype into use.
No, I haven't dared to touch zugschlus.de, my most important domain, yet. This is planned for the weekend. So, if you experience difficulties in accessing any of my Internet services, please inform me and allow me to fix the issue.
Continue reading "New DNS setup getting productive"I recently had an issue where a remote host would frequently run out of memory after a number of processes had been invoked from remote. I looked in the wrong direction first, but finally found out that each process invocation leaves two sshd processes hanging around, which are eventually exhausting the memory on the box.
Next step was finding out what happened for the sshd processes not to properly terminate. Eventually, I remembered that the incoming ssh connections were not invoked directly, but via a third host with "proxycommand ssh other-host socket %h %p". Looking on other-host quickly showed a number of socket processes being around, and killing them made the sshds on the low-memory host vanish as well.
Short-term remedy was therefore to set ClientAliveInterval in the low-memory host's sshd configuration.
I then searched for reasons why ClientAliveInterval is not set by default at least in Debian's sshd configuration. I didn't find a reason and proceeded to file a wishlist bug request againnst openesh-server for this option to be set by default.
Before filing this bug, I routinely visited the BTS, just to find out that the bug was already filed. By me. One year and 285 days ago. And that the openssh maintainer(s) didn't even bother to reply to it yet.
Guys, _this_ is a textbook example how to discourage people from filing Bugs against your packages. Please, give them at least the appreciation of a short ACK if you don't get around to fixing the bugs in reasonably short time. Having a bug rot away uncommented and unfixed in the BTS for two years is simpy not acceptable. Yes, that goes even for a wishlist bug.