Centreon is a nice GUI wrapper for Nagios. It is using MySQL as its configuration engine, and it functions quite well. One thing Cacti can do but Centreon can’t is mass automatic addition of servers. I have had a new site with an installed Centreon, and I wanted to add about 40 servers to be…
Working with RH Cluster quite a lot, I have decided to create an online store of customer agents/scripts. I have not, so far, invested the effort of making these agents accept settings from the cluster.conf file, but this might happen. Let the library be! Oracle DB script/agent: Although I discovered (a bit late) that RH…
I have neglected this blog due to routine work lately. I have done some things, but not much to write home about, and being swamped with work, I just lacked the initiative to add new stuff, or to dwell into new technologies and problems. Routine is routine, and upgrade to WordPress Mu sometimes introduces new…
This sounds weird, but I have witnessed it today, and had to work rather hard to figure the cause of the problem. When using ” Intel Corporation 82575EB Gigabit Network Connection (rev 02)” (as lspci reports), TCP offload causes problems. Symptoms: The host can communicate with the guest flawlessly (including HTTP get for larger than…
To burn Dual-Layer (or Double-Layer, of you stick to the official name for DVD+R) medias, I use growisofs. The syntax is as follow: growisofs -dvd-compat -use-the-force-luke=break:1913760 -Z /dev/scd0=file.iso Change the break blocks to match your own values, and replace the file.iso with the actual name of your ISO file. If you do not set layer…
As the owner of a nice laptop running Hardy, I had a huge performance degradation when accessing USB storage devices. Speed could reach 1MB/s at most, and usually, half that speed. The trick that solved my problem was suggested in this post, and after I have tested it, I was happy with the results. The…
