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Jun
18
answered Hadoop cluster. 2 Fast, 4 Medium, 8 slower machines?
Jun
18
answered Do you skip a rack unit between servers?
Jun
17
comment Server load average is 25% in top
Your description is not quite correct. The load average is not the number of processes waiting on the processor. On Linux, the load average includes processes in the running, runnable, and uninterruptible sleep states. That means the load goes up by 1 for each processor currently using the CPU, waiting for the CPU, or waiting for something else (usually disk I/O, or in this case, NFS).
Jun
17
awarded  Critic
Jun
17
comment Password Management System for multiple SysAdmins?
Evan wasn't the one asking the original question...
Jun
17
answered Can I change the name of an NFS export
Jun
14
comment How to tell what process has a specific port open on Linux?
If neither netstat nor lsof show the port as being used, but the machine is responding to it, chances are there's been a root kit installed. I recommend moving any data off the machine somewhere else and then nuking it.
Jun
11
asked NFS mount “hanging” when accessing from a server on a different subnet
Jun
11
answered Single sign-on for a mixed-OS network
Jun
10
comment Open Directory Failover
Yes, I've read that. It's also possible that the second scenario they are describing is more appropriate for a remote site that replicates from a master site somewhere. The clients would then be configured authenticate with the replica by default simply because of proximity reasons.
Jun
10
comment Linux server is only using 60% of memory, then swapping
Thanks. This really seems like the crux of the problem. We'll look at ways to rectify it.
Jun
10
accepted Linux server is only using 60% of memory, then swapping
Jun
10
asked Open Directory Failover
Jun
10
comment Linux server is only using 60% of memory, then swapping
I'll look at some of your suggestions. No, I'm not crazy and running a production database on the backup system. The PostgreSQL is part of the backup system, as Bacula uses that as its information store for keeping track of what is on what tape, etc. I'll take a look at tuning some of the parameters you specified. The high I/O throughput is a result of other servers dumping data to this server's disk tray, and this server subsequently pulling that data and writing it to an LTO4 tape library.
Jun
9
comment What's a good tool for collecting statistics on filesystem usage?
I think Evan pretty much hit the nail on the head with the link to that paper. That's basically the exact kind of data I'd like to be able to collect. Just trying to see if there's a way short of purchasing an expensive NetApp box to do it :)
Jun
9
comment Linux server is only using 60% of memory, then swapping
It's an SGI Altix XE240, I'm pretty sure it can support more than 4 GB of RAM as I've used demo units with 32 GB.
Jun
9
answered While gentoo is doing emerge update world, can I safely work in another terminal window (ALT-F3 for example)?
Jun
9
comment What's a good tool for collecting statistics on filesystem usage?
The operating system is Linux. Sure, I can do ls, but I don't see how running that on a 12TB filesystem is going to give me a concise view of its usage characteristics without me writing a lot of code to analyze the output from multiple runs.
Jun
9
asked What's a good tool for collecting statistics on filesystem usage?
Jun
9
comment Extending the Filesystem Hierarchy Standard (FHS) to house Enterprise Software
I also think this is pretty much the best way to go. It also doesn't require any "extension" to the FHS. Isn't this already the standard?