daily system administration

Linux, Debian and the rest
any questions or comments: Tom@d7031.de

better individual spam defense with amavis and spamassassin

Postfix, amavis and spamassassin is a very good team for handling emails and fighting against SPAM. They catch ninety percent of all SPAM with there ruleset. You can also include the excellent ruleset from Heinlein-Support (german). But. I’ve some special SPAM for health ensurance advertising and so on. So I’ll show a way to catch this last percents. My email setup is very common. Postfix takes the email and delivers these to amavis. Read more →

Checking hard- and software raid with icinga2

Upgrading from Nagios or Icinga 1 to the new and outstanding Icinga 2 is a good moment to review your checks. Steps to configure raid monitoring with Icinga 2 Download and install The standard nagios/monitoring plugin package includes one for a long time, but there is a new check for raid’s under linux. You can find it on GitHub. This is a modular plugin. If you want to have one big file including all modules, you can download this from my site. Read more →

Debian, Apache and HTTP/2 – Important Info !

Deliver your websites with Apache and HTTP/2 IMPORTANT INFO ! I’ve backported apache 2.4.25, but it now depends on openssl from debian backports. The reason for this step back is this bug 828236. So you have to add the debian-backports repo in your system: echo 'deb http://ftp.debian.org/debian jessie-backports main' >> /etc/apt/sources.list.d/debian-backports.list and install/update the openssl packages from there: apt-get install libssl1.0.0 -t jessie-backports Your system is now ready for the apache 2. Read more →

Apache 2.4 Backports for Debian wheezy and (squeeze)

Running Apache 2.4 (SID) under Debian wheezy and (squeeze) Apache 2.4 is the current major release. This version is available in the debian SID and Testing tree (experimental before), so I’ve backported these packages to wheezy and in the past squeeze. The last available squeeze-version for i386 in this repro is 2.4.4-6, because I’ve no squezze-i386 servers anymore and I can’t test this packages. The last squeeze-version for amd64 is 2. Read more →

Moving a XEN-Instance from etch to lenny

With the upgrade from Debian etch to lenny i’ve set up an new machine to serv my XEN-Instances. First install the Dom0 on the new hardware and create a logical volume (here my-lvm-vg on/dev/sdb) for further expansion: pvcreate /dev/sdb vgcreate my-lvm-vg /dev/sdb Then bring up your network by editing the /etc/xen/xend-config.sxp similar to the old system (e. g. network-bridge). If you have broken network interfaces in Dom0, follow this link. Read more →