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Entries from August 2014.

New Shutter packages for EL6 & EL7

Shutter is a wonderful project which started as a screenshot tool, but I find myself using its editing capabilities more and more. I barely touch GIMP nowadays!
I have updated the Shutter packages for EL6 and EL7 the other day. You may notice some improvements and a few UI changes (nice icons).
To install it you need EPEL and nux-dextop repos on your system. Check this page for how to do that if you do not have them already:
http://li.nux.ro/repos.html

Once that's done, just:
yum install shutter

Enjoy!

512k routes ought to be enough for everyone

Today someone announced some more IPv4 classes on the Internet, nothing new here, but this meant the global routing table has exceeded 500k entries (501,525 as we speak).
This has caused a lot of very popular Cisco router models to go belly up because their default value for the IPv4 table size is 512k which in this case was not enough to hold the global table.[1]
Here in UK I noticed a lot of companies had problems, from smaller ones like Coreix to bigger ones like BT, the impact was pretty large. I imagine this problem was felt globally.

This default value can be changed easily[2], but it requires a reboot of the router which in the network engineering world is a big thing as it is one of the most critical pieces of infrastructure; everyone should plan their maintenance windows accordingly.






[1] - Theoretically the table should hold up to 512k entries, but the memory is not exclusively used for it, some of it goes to IPv6, some to maintaining various sessions, MPLS etc, so it crapped out at around 500k.
[2] - http://www.cisco.com/c/en/us/support/docs/switches/catalyst-6500-series-switches/117712-problemsolution-cat6500-00.html

Install Skype on CentOS 7 (and other RH clones)

Hello there. CentOS 7 is a fresh and major release, but fear not, Skype works well on it.
As usual, just yum install skype if you have my nux-dextop repo installed or just grab the latest RPM from here http://li.nux.ro/download/nux/dextop/el7/x86_64/ and install it.

Don't be shy and let me know if you encounter any issues - rpm at li.nux.ro !