Archive for the ‘Networking’ Category

Cacti Update

Well that was easy. I’ve just moved two tables to the type Memory/Heap and cacti runs like it used to (in fact a hell of a lot better than it has been doing recently.)
The two tables moved are: snmp_counter64* and poller_output. Both these tables can afford to loose the data on restart – [...]

September 17, 2006   Posted in: Networking, Software  Comments Closed

Cacti

Well our age’ed Dell server has finally hit a limit with cacti.
Currently it has:
Hosts:354 Data-Sources:16943 RRDs Processed:8744
And has hit a limit with Disk i/o.
What I plan to do is: Move it onto a temp virtual server. Completely rebuild the old dell with two RAID 1 sets each on 2 disks – One for [...]

September 12, 2006   Posted in: General, Networking, Software  Comments Closed

WPA/IPW2200/Linux/Debian 3

After hearing about Network Manager on LugRadio at Guadec I decided to give it a go.
A bit of messing around – including installing the version from Testing I found out I need a new kernel for WPA.
Of I went and got 2.6.17 and compiled it.
Things of Note:
I had to use the ieee80211 module and the [...]

July 6, 2006   Posted in: Kernel, Networking, Software, Thumbs Up  Comments Closed

Cacti

Just added another plug-in to cacti over the last couple of weeks – weathermap.
Basically allows you to draw diagrams of you’re network, and it takes data from the rrd files and displays different coloured arrows show the percentage of the link used.
Basically allowing you to see whats going on, on your network and where all [...]

July 2, 2006   Posted in: Networking, Software, Thumbs Up, Work / Microsoft  Comments Closed

Open Source & The NHS

The NHS as a whole doesn’t seem to use any open source, nor does it look like any will be coming (unless the likes of Java get GPL’ed)
However at work we have started to look into Open Source.
We currently have an every-growing Cati Install. Cacti is a great bit of software – at its [...]

May 30, 2006   Posted in: Networking, Software, Thumbs Up  Comments Closed

Good Wireless News

After a few weeks of use – I can confirm my wireless works well by just starting wp-supplicant. No constant restarting and removing/radding of modules hoping to get a use-able speed. The speed can sometimes be a bit poor – but at least its use-able and doesn’t hinder unless transferring large files.

May 25, 2006   Posted in: Kernel, Networking  Comments Closed

WPA/IPW2200/Linux/Debian 2

Yes once again I have to go through the pain of WPA/IPW2200/Debian/Kernel problems. Given that I have a laptop I wanted more laptop like features on my system – so I kernel upgrade was needed.
Currently using:
Kernel 2.6.14
-Wireless Extension v19.
Debian Etch + Extra apt sources
wpa_supplicant v0.4.7
Wireless-Tools version 28
The problem this time is that I needed [...]

April 15, 2006   Posted in: Kernel, Networking  Comments Closed

WPA/IPW2200/Linux/Debian

Wireless on Linux sucks. It seems everytime one little bit in the chain of programs, firmware and drivers changes I lose WPA capabilities. In fact currently Debian, IPW2000 and wpa_supplicent don’t work together, and apparently this happens on a number of other distributions.
I have got it working, but I used a custom 2.6.12 [...]

January 9, 2006   Posted in: Kernel, Networking  Comments Closed