Munin is a networked resource monitoring tool that can help analyze resource trends and "what just happened to kill our performance?" problems.

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4
votes
1answer
5k views

how to get a total bandwidth graph in munin

I have munin-node in a basic default configuration on all my servers, I would like to create a summary chart that displays total bandwidth in/out http and another chart showing total bandwidth in/out ...
4
votes
5answers
8k views

apache server-status not found. check if mod_status is enabled

I've enabled the apache_ plugins on a munin node: ln -sv /usr/share/munin/plugins/apache_* /etc/munin/plugins/ After restarting the node with service munin-node restart here are the errors I'm ...
1
vote
3answers
4k views

How to export munin raw data to CSV?

I'm monitoring my Debian GNU/Linux server with Munin monitoring software. I was wondering whether I could export the raw data used to generate Munin charts? I want to do some in-depth statistical ...
27
votes
4answers
18k views

Munin vs Nagios

We're currently using Nagios to monitor about 20 Linux machines (services and functional links). I just find out about Munin and I wonder if this is a Nagios replacement, or it can be used together ...
8
votes
6answers
13k views

Nagios graphing solutions vs Munin/Cacti/Ganglia

I've got a nagios server setup for monitoring ~ 30 Windows servers. I want to add some trending charts. I've read that nagios graphing plugins are simple and many people use seperate, standalone ...
12
votes
2answers
4k views

Change a Munin server and keep the data

We are migrating some servers, and we need tp change our Munin server. Most of the Munin nodes are not changed, and we would want to keep track of the historical data, if possible. I can set up a ...
5
votes
1answer
3k views

Interpreting munin graph and committed memory

I've been noticing that my server has been using swap a quite more often now but I can't seem to figure out why. The munin graph shows that the apps memory usage is about 0.7G out of the 1.5G. The ...
0
votes
1answer
144 views

Add marks at specified times on a Munin graph

I want to mark some events on my Munin graphs to see how the graphs change at these points. It seems that in RRD terms they can be created by VRULE command, but I can't find a way to use it with ...
2
votes
2answers
2k views

'inode table usage' spiking every morning at 8am

I installed munin on my ubuntu server. It's showing my 'inode table usage' spiking every morning at 8am. It then rapidly curves down and settles over the course of several hours. What might cause ...
2
votes
1answer
151 views

What does a jagged committed memory graph mean?

We've been attempting to debug load programs on our servers, and along the way we've been looking at some graphs, like this one: (The white spaces are when the server got so hosed we couldn't ...
2
votes
3answers
2k views

How to monitor HTTP response error codes from nginx using munin?

I'm beginning to use Munin to monitor an in-production Nginx server. One thing I'm particularly interested in graphing is the rate of errors--HTTP responses with codes in the 50x range. I'm wondering ...
2
votes
1answer
1k views

Munin's fw_conntrack reports strange number of sockets in TIME_WAIT

Ubuntu Server 10.04.1 x86 Munin 1.4.4 Here is what Munin tells me about connections through firewall on my server: Here is what netstat -n has to say about this: $ netstat -an|awk '/tcp/ ...
2
votes
1answer
1k views

munin to monitor apache hits on particular URLs

We are having a problem with our web application, and are currently monitoring performance via munin. We have defined a list of URLs that are causing problems, and am hoping for munin to find out from ...
1
vote
2answers
575 views

How to read the scale of the munin monitoring system, tomcat accesses by day graph

The tomcat accesses by day graph in munin has a y axis that shows "accesses / second", and currently shows "66 m". It can't be 66 million accesses per second, a single server couldn't return that ...
1
vote
1answer
673 views

How can I use munin-node apache_ with basic authentication?

munin-node-configure --suggest tells me that the apache_* nodes cannot be used: apache_accesses | no | no [Port 80: Authorization Required] apache_processes | no | no ...
0
votes
2answers
146 views

PHP scripts time out but regular pages are snappy

I'm having a strange issue with nginx and PHP-FPM. I have a server set up to serve downloads for my website. It's not very beasty, it's only a Celeron G530 and 4GB of RAM, because of this, I'm running ...
0
votes
1answer
525 views

Munin: Graph not plotting one label

I have set up munin to monitor EC2 instances. Now my CPU usage graph (using the unmodified cpu plugin) looks like this: The problem is that the "iowait" parameter is returned correctly (see text ...