Category: Uncategorised

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Cisco people update and Patch NOW!

Cisco Tiki art from logic board
Cisco logic board

Just a quick shout out …. So one of the things that is some times talked about is the problem of the “non heterogeneous” or homogenous networking environment. The illusion that choosing the market dominant product (because everyone else buys it) is the right thing to do …. Anyhow it seems that Cisco is in a bit of bother due to its some what hated buggy protocol CDP. If your a cisco nerd and haven’t caught up on this it might be time to do a bit of serious patching!

Have a look at this wired article
Cisco Flaws Put Millions of Workplace Devices at Risk

And also the Reg have something about it
Tens of millions of Cisco devices vulnerable to CDPwn flaws: Network segmentation blown apart by security bugs

Stay safe on the Interwebs!

Steve

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Outages and other stuff

Well that took longer than I thought it would (site being down!). It’s interesting trying to get a computer server stack just right – I’m close with this build but it’s something that you have to keep on top of. Hence it took me a week or so to get the site up again – and I may have a hardware issue to sort out but that’s a story for another day, but also part of the reason it took me a while to re build. But I must also admit that the last build stood the test of time (about 2-3 years) so it’s not all bad.

Computer

Onward and up ward, the next phase is a blue green development enviroument so that hopefully this won’t happen again. We learn from our mistakes!

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Setting up software based raid

This is a very quick and dirty collection of notes to just get you up and running

View existing drives

lsblk -o NAME,SIZE,FSTYPE,TYPE,MOUNTPOINT

Create raid array

sudo mdadm –create –verbose /dev/md0 –level=6 –raid-devices=4 /dev/sda /dev/sdb /dev/sde /dev/sdd

 

Observe process of building

watch -n 3 -d cat /proc/mdstat