Author / svennd

I hit on this annoying little bugger while setting up snmpd : snmpwalk -c servers compute-0-1 SNMPv2-MIB::sysDescr.0 No log handling enabled – turning on stderr logging snmpwalk: No securityName specified Version of snmp : snmpd -v NET-SNMP version: 5.5 Web: http://www.net-snmp.org/ Email: net-snmp-coders@lists.sourceforge.net In this particilar case I had to specificaly add the security version […]

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Just playing around with bareos-webui and suddenly I’m greeted with a 500 error on the website. The director was running nicely and /var/log/messages did not show anything. Since this is a web server error, luckily there is something logged in the /var/log/httpd/error.log : [Fri Mar 10 16:38:08.009365 2017] [:error] [pid 11266] [client hidden-ip:64292] PHP Fatal error: Uncaught […]

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In the last posts, we setup bareos and connected a client to the bareos server, there are however no backup jobs auto-magically added to the bareos server so that’s our job. At first creating a job seems difficult and complex, but most of the options only become interesting in specific applications and a simple basic […]

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Bareos is really powerful, but also pretty complex. If we take it step by step, we will get stuff up and running soon enough. Let’s start simpel by adding a client and setting up a backup job for the configuration of Linux servers (next post). Since I like to run yum-cron its quit common for configuration files to […]

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Bareos (Backup Archiving Recovery Open Sourced) is a backup solution, its a fork of the better known Bacula. At work we use a commercial package called retrospect, it has proven itself in many situations, never the less, its good to look out what free and open-source alternatives are out there. Bareos caught my eye in particular, cause […]

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Create a ZFS mirror pool

8 March, 2017

I recently revived a “old” compute cluster. While its hardware was formidable back in the day, now it has been replaced with a younger version, which has more compute nodes. I wanted to create a data partition of two disks, normally I have a raid controller but on this server, there is none.  An open invitation for […]

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Once ipmitools are installed (if not see this post) its easy : ipmitool -I open user set password 2 NEW_PASSWORD (the capitals are the new password) The 2 stands for second user, all the machines I have seen 1 is “guest” who has no access.

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During installing mysql2 gem on ruby : checking for mysql_query() in -lmysqlclient… no checking for main() in -lm… yes checking for mysql_query() in -lmysqlclient… no checking for main() in -lz… yes checking for mysql_query() in -lmysqlclient… no checking for main() in -lsocket… no checking for mysql_query() in -lmysqlclient… no checking for main() in -lnsl… yes […]

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I got this weird error, which -to be fair- I haven’t exactly found out why it happens but I found a way around it. If you ever figure out how please let me know. There are some markers of this issue : Trying to log in remote, seems to work but ends up with : […]

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top explained visually

21 February, 2017

A while ago, I read this blog post htop explained visually. I  liked the idea of visually representing htop, but beside the result of a visual representation it gives a good opportunity to dive in to those columns you silently have been ignoring for a large time. The author of the idea commented “I hope this post […]

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