xz: Your next default compression tool
The xz compression program, run with defaults, can be so slow that you might wonder why anybody uses it. But on a modern machine, xz… Read More »xz: Your next default compression tool
sysadmin
rsnapshot-parallel
Today we released rsnapshot-parallel to Github. While we’ve used rsnapshot for years, recently with the proliferation of virtual machines we’ve noticed our backups running much… Read More »rsnapshot-parallel
Automatic HTTP Basic Authentication with mod_proxy
Let’s say you need to access a resource that’s protected by HTTP Basic authentication but the system you’re using doesn’t support it. Like, say, Google… Read More »Automatic HTTP Basic Authentication with mod_proxy
Multi-Port Port Knocking with IPTables
Maybe you’re tired of all the fail2ban log messages about attempts to crack your ssh passwords. Maybe you have developers who need to access a… Read More »Multi-Port Port Knocking with IPTables
RT – Redirecting Comments Directly to a Ticket with Postfix
We would like to be able to redirect a message directly from our inbox to an RT ticket, in the form ticketnumber@rthost and have it… Read More »RT – Redirecting Comments Directly to a Ticket with Postfix
Puppetizing EL6 & EL7
Some tips and tricks for dealing with multiple OS releases with the current version of Puppet in EPEL6/7.
Updating CyanogenMod 11 (KitKat) Milestones on Encrypted Devices
Instructions for how to update a KitKat version of CyanogenMod’s Android distribution with adb on a computer and TWRP on the phone.
Fixing Chromium “your profile could not be opened”
A script to rebuild the sqlite files that Chromium/Chrome depend on.
RT4 Packages for EL7
You can now install RT/Request Tracker version 4 on CentOS/Redhat Enterprise 7 via RPM packages.
Installing CentOS 7 on Xen
Installing EL7 on a modern Xen setup requires some changes from the EL4/5/6 methodology.