Entries in the ' sysadmin ' category
Seeing this error message in /var/log/xen/xend.log?
ERROR (SrvDaemon:347) Exception starting xend (no
element found: line 1, column 0)
You’ve got a corrupt xen status base. Go under /var/lib/xend/ and remove any xml files under any of those directories. Don’t delete the directories or sockets themselves.
I had this happen after a …
I had a weirdness happen as I was feeling my way through this node configuration with crm (pacemaker) 1.0.3.
It turns out that as I configured my resources and created locations and constraints, the crm created a bunch of lrm_resource (location resource manager) objects in the xml cib. You can’t …
With the new email features in the most recent crm_mon daemon, it shouldn’t be too difficult to get a service set up so that Nagios will alert us when a stonith event happens, and maybe even some details about why.
It’ll take much longer for me to decide on …
Random notes … It’s nice to have manuals, but maybe these will help someone.
- Hmn, you should probably add rules to keep the stonith service for a node off of it. It’ll probably also save time if you set it’s failcount low.
- stonith is fun. BOOM, HEADSHOT!
- For some reason, monitoring a
…
You can use pacemaker with ocfs 1.4, but when you’re running service o2cb configure, you need to specify the “cluster stack” pcmk instead of the default o2cb. I haven’t tested this myself yet, but if I don’t blog it, I know I’ll forget it. 
I’ve installed Semantic Mediawiki in our existing mediawiki instance at work to start tracking some of the data we need to retain for compliance and audit documentation purposes.
As the list of things that we support has grown, the number of servers has grown, and our documentation overhead has …
Mm, alphabet soup.
I hadn’t looked into the cluster world since the last time we configured our cluster for SuSE 10.3 last year. Major groundswells, sinkholes, and shifts seem to have opened up … to the point where things aren’t even called the same anymore.
The big difference is that EVMS …
After months of throwing books at one another and not talking despite sitting almost back to back, my co-sysadmin and I are starting the next buildout/migration of our Xen virtual cluster at work. One of the big decisions that we’re making is the OS. In the past, we’ve skipped every …
It’s been quiet around here for the past few months. I’ve been busy working on central syslogging of all kinds of different things, and the project’s been killing my free time because it’s downright interesting to put together this many things all focused on one task.
The end goal …
Apache errors can use a syslog facility as a destination (by default in this mode, local7:info). Apache access logs, rewrite logs, and php error logs can not use syslog. This is annoying if you’re doing things like combining apache logs from a cluster of web servers for stats purposes or …
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