Linux & Unix Arkiv - Nellemann Data

Proxmox VE – Open Source Virtualiserings Platform

Proxmox VE er en open source hyper-converged og clustered virtualiserings platform, hvor du kan afvikle virtuelle maskiner (med KVM) og/eller Linux Containers (med LXC). Proxmox er et rigtig godt alternativ til VMWare og HyperV.

Proxmox er en open-source virtualiserings platform, hvor du kan afvikle virtuelle maskiner (med KVM) og/eller Linux Containers (med LXC). Du kan installere Proxmox på langt det meste hardware, da Proxmox er bygget oven på Debian GNU/Linux med en patchet kerne fra RedHat. Installationen er ikke svær og minder om de fleste Linux installationer man allerede kender.

Recommended Ubuntu PPAs

When installing an Ubuntu based distribution (KDE Neon in my case), I always add the following extra package archives. This list is a reminder for me, but you might find it useful. sudo apt-get install software-properties-common sudo add-apt-repository ppa:lyzardking/ubuntu-make sudo…

BURP – BackUp and Restore Program

One of my favorite OSS tools is BURP (short for BackUp and Restore Program). Backup is perhaps the single most important task you must deal with when working with It systems and data.

HP ProLiant Fan & Temperature Monitoring

If you have the hpasmcli command installed on your ProLiant server (available from the HP ProLiant Support Pack), you can display the speed of fans and the temperature of different parts of your server and use collectd to store the values. The following has been tested on a ProLiant ML350 G6 server.

On Debian you can add the following line to eg. /etc/apt/sources.list.d/hp.list and install the hp-health package:

# cat /etc/apt/sources.list.d/hp.list 
deb http://downloads.linux.hp.com/SDR/repo/mcp wheezy/current non-free

# apt-get update
# apt-get install hp-health

Example output of running the hpasmcli command directly (to verify that it actually works):

# /sbin/hpasmcli -s "show temp"

Sensor   Location              Temp       Threshold
------   --------              ----       ---------
#1        AMBIENT              26C/78F    42C/107F 
#2        CPU#1                40C/104F   82C/179F 
#3        CPU#2                 -         82C/179F 
#4        MEMORY_BD            37C/98F    87C/188F 
#5        MEMORY_BD            34C/93F    87C/188F 
#6        MEMORY_BD            33C/91F    87C/188F 
#7        MEMORY_BD            33C/91F    87C/188F

Debian Squeeze backport of Burp 1.3.48

I have backported burp on Debian Squeeze 6.0.10 amd64 as of today. Original from Burp-1.3.48-4~bpo70+1. burp_1.3.48-4~bpo70+1~bpo60+1_amd64

Remove unused kernels

Remove all kernels but the latest For regular Debian/Ubuntu, type: for kernel in $(cd /boot; ls -1cr vmlinuz-* | head -n -1 | cut -f2,3 -d’-‘); do sudo apt-get remove -y $(dpkg -l | egrep “^ii linux-image-$kernel” | awk ‘{print…

ZFS Log and Cache on sliced disks

Having two SSD disks in a FreeNAS (w. ZFS) storage system, I wanted to test log and cache. To avoid using 120GB SSD for the log-device (which only needs 1-2GB) I decided to slice the disks, and use the rest…

+2 TB Partitions and +16 TB Filesystems

To make partitions larger than 2TB, a normal DOS partition table will not work. We have to use a GPT partition table to support +2TB partitions. This is easily done with the parted tool. Below we label the /dev/sdb device…

Why Nagios plugin check_dig fails on one host and works on another

It turns out that language/locale settings affects the output of the check_dig Nagios plugin. On one Nagios server it worked as supposed, but on another it threw; DNS WARNING – 0,004 seconds response time (dig returned an error status) Performance…

Forcing HTTPS for php scripts

Ever wanted to enforce HTTPS access to particular scripts or files? Here’s one way to do it. The following Apache example rewrites URL to HTTPS for .html, .htm, and .php files. <IfModule mod_rewrite.c> <FilesMatch “\.(htm|html|php)$”> RewriteEngine On RewriteCond %{HTTPS} off…

Category: Linux & Unix