Posts

VMware ESXi 5.5 and LSI RAID monitoring

Adding LSI RAID controller status to VI client and connecting to ESX using MSM (Megaraid Storage Manager) running on Windows.

Adding pagespeed module to nginx 1.7.8 on Ubuntu 14.04

Wanted run fresh nginx version with Google Pagespeed on Ubuntu 14.04.

Installing Ubuntu 14.04 LTS with Cacti 0.8.8c

Ubuntu provides only Cacti 0.8.8b so we need to compile our own package with 0.8.8c after installing OS.

Virtualizing old Centos 5 server with software RAID disks

VMware Converter does decent job converting old physical servers to virtual machines, but it refuses to do anything to servers using software RAID. I really don't get why such arbitary limitation is in place. It really doesn't matter if physical server used RAID, software or not, because everything is copied by Converter on file lever rather than block level.

Remapping bad sectors with Linux and dd

I have one faulty non-RAID disk on server which I can't replace right now so I wanted to see if I could mask problems by manually triggering bad sector reallocation.

Using Sonera 6rd IPv6 with Cisco IOS router

Sonera recently started offering 6rd tunnels to their customers in Finland. Based on this Comcast example it was easy to get Sonera 6rd up with Cisco 892 running IOS 15.5(1)T.

Prefer IPv4 over IPv6 on CentOS 6

To prefer IPv4 (A) addresses over IPv6 (AAAA) on CentOS 6 you need to add new file named /etc/gai.conf with following content. Last line is what controls if IPv4 or IPv6 should be tried first.