1
vote
3answers
79 views

How do I detect what is changing file ownership on Linux?

I have inherited a bunch of Linux (Ubuntu Precise) servers and am currently having problems with the ownership of a folder changing to "root" fairly often. We run puppet, which changes the ownership ...
0
votes
1answer
542 views

How to diagnose failed drive on server with raid storage controller?

I have problem with one of my Dell PowerEdge R210. Machine is with Centos 6, today system logs started to inform that the hard drive is failing. Jan 6 03:20:12 centos6 kernel: LSI Debug log info ...
0
votes
3answers
175 views

memtest86+ crashing on server

We have a few DELL 1950 servers. One of those servers has CentOS6.3 and it's randomly rebooting, so I suspected it was hardware (no log generated). The other four servers do not randomly reboot. We ...
4
votes
3answers
2k views

Methods for analyzing Red Hat sosreport output?

For some time (since EL 4.6), Red Hat has embedded a system report and troubleshooting tool into the operating system. The tool, sosreport, collects system information and settings and bundles it into ...
2
votes
2answers
1k views

Diagnosing possible intermittent network failures/slowdowns; tool?

Is there a simple (linux cli) tool that I can run continuously for a period of time to see if the there are any connection problems between two specific network endpoints over the wan? One remote ...
3
votes
2answers
8k views

How to diagnose frequent segfaults

My server is logging frequent segmentation faults to /var/log/kern.log in different tools. So far I've seen them in Perl, PHP and rsync. All installed software is up-to-date Debian packages. Here's an ...
1
vote
5answers
240 views

What does “-k start” mean in the output of ps command

I try to run an apache instance. It doesn't run properly. I am trying to get some diagnostic information. I gave ps command and the apache instance that don't run properly are output with -k start. ...
1
vote
1answer
2k views

Process in the run queue

How do show the current list of processes and threads currently in the run queue? That is to say, if my server's load average is 32.1, then there were on the average about 32 processes or threads ...
3
votes
3answers
496 views

Snapshot of system at high load times?

I'm seeing high load average at regular times on one of my sites. I have alerts setup, but it's not obvious what's causing the high load, so I'd like to capture the state of the system when the alert ...
6
votes
9answers
9k views

Linux - Is there any way to identify the speed of your memory through software?

Is there any way to identify the speed of your memory through software? I am on Fedora 9 and looking to find out the speed of the DIMM's I have in there currently. I have tried a 'lshw' but it doesnt ...