Comments for MDLog:/sysadmin

Comment on Test your internet connection speed with style using speedtest.net by Tibia

Tibia — Fri, 03 Sep 2010 20:31:32 +0000

Nice…

Thanks, I always love a good read. Dont stop posting!…

Comment on Bash tips: if -e wildcard file check => [: too many arguments by Dan

Dan — Thu, 02 Sep 2010 19:18:16 +0000

Harakiri almost got it right. If there are no files, $EXISTENCE will not be set, resulting in the test to evaluate to TRUE. This is because $EXISTENCE will evaluate to nothing causing the if statement to expand to “if [ =0 ]“. This test evaluates to TRUE (I tried it), which is obviously wrong.

Try this instead:

NOTEXISTS=1 ; for FILE in /tmp/*.cache ; do test -e $FILE ; NOTEXISTS=$? ; break ; done
if [ $NOTEXISTS -eq 0 ] ; then
echo “Cache files exist: do something with them”
else
echo “No cache files…”
fi

Comment on Partition Table Backup by Allen Halsey

Allen Halsey — Tue, 31 Aug 2010 21:12:39 +0000

@Non_E
1) The partition table is contained in the 64 bytes starting at byte 446 of the MBR.
2) An advantage of sfdisk over dd is that sfdisk can handle logical partitons.

Comment on MySQL skip duplicate replication errors by John

John — Tue, 31 Aug 2010 14:08:32 +0000

Thanks for that!

Comment on Mdadm Cheat Sheet by Greg

Greg — Fri, 27 Aug 2010 09:44:46 +0000

AHCI Bios options changes the way disks re represented to the OS, so I’m not surprised it mangled your RAID array. There’s not much you can do but revert to previous BIOS Settings and hope to be able to recover data in circumstances like this. for more info, google/wikipedia “AHCI”

Comment on Adding a secondary IP address on a Cisco ASA Ethernet interface by Ethernet

Ethernet — Fri, 27 Aug 2010 09:07:37 +0000

article very good

Comment on Can I use Google Analytics if my site is generating more than 5 million pageviews? by Bupkus @ RambleOn

Bupkus @ RambleOn — Thu, 26 Aug 2010 02:11:11 +0000

[...] one: I was reading Marius Ducea’s post about Google Analytics and high traffic sites tonight. None of the sites I’m currently [...]

Comment on Can I use Google Analytics if my site is generating more than 5 million pageviews? by Mircea

Mircea — Wed, 25 Aug 2010 17:10:28 +0000

Incearca Omniture sau Webtrends daca vrei un wa solid.

Comment on HowTo install reconnoiter on Debian Lenny by - Marius -

- Marius - — Wed, 25 Aug 2010 16:54:37 +0000

@Vide for my particular project I was interested in adding metrics with collectd from the end servers. It works fine. You can definitely add metrics using the cli, but you will have to automate this to make it useful. I would suggest looking into collectd first as it has already many plugins and makes it much easier to add the metrics automatically as new machines get added to the setup. Hth.

Comment on HowTo install reconnoiter on Debian Lenny by Vide

Vide — Wed, 25 Aug 2010 11:52:59 +0000

Marius, have you already touched the UI? I’ve seen the OSCON presentation and it seems cool and more modern than Zabbix UI for example but how do you rate it? Real time graphs rule but can you for example create new checks/items graphically? Or you must use the CLI (which anyway it’s good looking as well)?