In this setup we will setup a HA failover solution using Corosync and Pacemake, in a Active/Passive setup. Installation and Setup Prerequisites Hosts or DNS resolvers NTP Must be installed and configured on all nodes […]
Below are a few TCP tunables that I ran into when looking into TCP performance tuning for CEPH based on our 10Gbit configuration.
Linux allows us to bond multiple network interfaces into single interface using a special kernel module named bonding. The Linux bonding driver provides a method for combining multiple network interfaces into a single logical “bonded” […]
This detailed how to guides to high availability and performance on Debian/Ubuntu for with a dual FC HBA (Brocade) and shared storage on a HP EVA6300. Tested on Debian Linux 5.x and 6.x bits running […]
Here you will find the step-by-step actions to succesully setup a master/master replication cluster of two MySQL 5.5 nodes on Windows. Prerequisites – Two servers with Windows installed (make sure all updates are installed) – […]
One of our development servers went down this weekend. Problems started with a small PHP script that claimed that claimed “No space left on device”. Nagios however reported 32% usage of space, so that couldn’t […]
On each linux server that you install there will be SSH to login as root and install/edit software. Even if you secure this, by disallowing the root user to login, there is a chance somebody […]
On Suse there are both Yast and Zypper but sometimes i need the option to download source packages to customize them for install.
I’ve had a lot of issues when installing NFDump on a new Wheezy (Debian) system. I solved it after hours of pain. The error i had: So i added the path to my lib folder […]
Trying to compile fontconfig on a suse box i kept getting errors about libxml2 not beeing found. I knew this had something to do with the include path’s but trying to set them manually didn’t […]