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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2answers
20k views

How should I monitor memory usage/performance in SunOS/Solaris?

Last week we decided to add some SunOS (uname -a = SunOS bbs-sam-belair 5.10 Generic_127128-11 i86pc i386 i86pc) machines into our running munin instance. First off, the machines are pre-configured ...
1
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1answer
557 views

Monitor Nginx response time with munin

Well, nginx is configured to put $request_time in it's access logs. Now I need to monitor this parameter with munin. Is there any existing plugin to do this?
2
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1answer
834 views

How to optimize munin fw_conntrack script

I have a server with about 65k connections in ip_conntrack. How can I optimize munin script that counts various types of connections (default fw_conntrack script): cat /proc/net/ip_conntrack | awk ' ...
0
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1answer
977 views

Multiple munin-nodes per machine

I'm collecting statistics remotely through JMX. The munin JMX plugin allows you to select an URL to connect to when aggregating statistics. This allows me to collect statistics from hosts which do not ...
3
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1answer
404 views

Munin - Netstat Graph

I've installed Munin on a couple of our servers (CentOS) so I'll have some way to monitor what is going on. [Sorry the images arn't embedded in, as it turns out new user's can't post images directly] ...
0
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1answer
647 views

Munin graphs are broken

My munin graphs all of a sudden display n/a I tried removing the RRD files, but they still display n/a. I've run munin-check and it says it's ok. How do I reset munin or what can cause this ...
0
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1answer
619 views

Short write and read speed disk benchmarking

We're using cloud hosting for some of our backend servers and we noticed that performance on the disks (which as confirmed by the provider are shared with other customers) vary depending on the ...
3
votes
1answer
2k views

Amazon EC2: how to find out detailed CPU usage?

I am running several EC2 instances, and I want to know the exact work my CPU is doing. On "normal" machines I am doing this with munin and its CPU plugin which looks at the statistics provided by ...
0
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1answer
691 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 ...
0
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1answer
466 views

Server management tool for small network [closed]

What would be the right management tool for my network? I take a look on Cacti, Nagios, OpenNMS, Munin & Monit ... but I'm not sure which will be the best direction. I prefer something that will ...
2
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1answer
168 views

Alert if munin-master contact node

I have installed munin on one of my servers, and munin-node on another server I wish to monitor. I would like an alert if for any reason the node can't be contacted by the master. Is it possible to ...
2
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1answer
1k views

Adding total bandwidth graph to Munin

I've been trying to figure this out for an hour... how to get a total bandwidth graph (showing all network traffic) in Munin? I just installed Munin, got several plugins added but what I'd really like ...
0
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2answers
470 views

Nagios (or a similar tool) with more variety in alert levels?

I'm looking at monitoring and alerting for some of our business metrics in a web app (pageviews, signups, etc). We already use Nagios and Munin for a wide variety of server monitoring and alerting ...
1
vote
1answer
397 views

What is the syntax for munin eth1 traffic?

I want my nodes' eth0 and eth1 traffic side by side in a single munin graph, like I have for load. I can't find the variable names for eth0 and eth1. For load it's myserver.com:load.load Any ideas? ...
2
votes
1answer
302 views

Starting Linode instances via StackScripts based on Nagios events

I'm developing a web application (django/gunicorn/nginx) that needs to be scaled out according to load. The app will be hosted on Linodes so I intend to use StackScripts (and maybe Puppet) to start ...
1
vote
1answer
573 views

What file should be the DirectoryIndex in Apache to properly serve Munin graphs?

This is probably going to be one of those of course! answers, but I've spent all night looking up tutorials and FAQs on Munin and can't seem to find the answer. I have Munin installed, and I'm trying ...
6
votes
1answer
427 views

Intermittent munin-cron error “There is nothing to do here, since there are no nodes with any plugins”

We've installed munin monitoring on one of our servers. Generally it seems to be working well but occasionally, 4 times in 2 months to be exact, munin-cron has generated the following error: ...
0
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1answer
459 views

Munin: Service 'fw_conntrack' timed out

Since a few hours the fw_conntrack plugin in munin gives always timeout error. It looks like the timeout is just because it took too much time to process, as it had happened a few times before in ...
1
vote
1answer
218 views

Why is the munin apache_activity plugin checking /server-status on a different server?

I have two web servers at different locations (let's call them WEB1 and WEB2) being monitored by the same Munin server. Today, I noticed the following error in the apache logs for WEB1: [error] ...
0
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1answer
187 views

Munin isn't showing graph history

I'm setting up my new Ubuntu 10.04 server and installed munin to view my machine's stats. It was working for a while, then I changed a couple of things (PHP spawn-fcgi to PHP FPM, reinstalled nginx) ...
0
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1answer
659 views

VMstat explanation needed

can somebody explain me this graph please? What does it show? What those green peaks mean?
7
votes
1answer
5k 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 ...
5
votes
3answers
1k views

Bash-Scripting - Munin Plugin don't work

i have written a munin-plugin to count the http-statuscodes of lighttpd. The script: #!/bin/bash ###################################### # Munin-Script: Lighttpd-Statuscodes # ...
1
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3answers
6k views

Configuring the Tomcat Plugin of Munin

It would be great if anyone can share a working configuration for the tomcat_ plugin of munin. I need to monitor several tomcat instances on one machine. So far I can't figure out: which are the ...
1
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0answers
557 views

munin-node installation on 10.7 OSX host

We've got a pretty good setup in house for using nagios + munin-node to monitor the various boxes. having some trouble getting munin-node going on our first OSX server (10.7 mac mini server model) ...
2
votes
2answers
2k views

Munin stopped updating

today at 02:20 I noticed that suddenly Munin stopped updating its graphs. It is not showing blank data, the whole graphs are not being updated anymore. I run CentOs 5.7 (64) and ive installed Munin ...
7
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1answer
2k views

Can someone explain the “use-cases” for the default munin graphs?

When installing munin, it activates a default set of plugins (at least on ubuntu). Alternatively, you can simply run munin-node-configure to figure out which plugins are supported on your system. Most ...
0
votes
1answer
992 views

Munin quota usage

I'm trying to get Munin to report quota usage but it's not working. On top of quota_usage_ it says: # Usage: place in /etc/munin/node.d/quota-usage_<dev> (or link it there using # ln -s), for ...
1
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2answers
726 views

How to monitor servers in different network using munin?

I would like to monitor some servers using munin, that are in a different network and are not reachable directly by telnet. I wonder what are the possibilities: Can I install a central node in the ...
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 ...
1
vote
1answer
892 views

Munin CPU usage graph doesn't go all the way to 100% on a busy VM

We've noticed that our Munin CPU graphs look a little odd on VMs that are quite busy. VM is running Ubuntu 8.04, VMware tools up-to-date and running, host is VMware ESXi 4.1.0 build 348481. This is ...
8
votes
6answers
12k 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 ...
3
votes
1answer
6k views

Unable to add new munin node to existing munin master

I'm trying to add a node to an existing munin master (which I didn't setup but which seems to be working fine as it shows graphs for 8 existing nodes) and I'm having some troubles. Here are the steps ...
5
votes
4answers
1k views

What metrics should I monitor on my Linux-server?

I've been tasked with setting up monitoring of 300 servers, doing different things. I've been looking at various tools, such as Nagios, Munin, and others - so I got a pretty good idea on how I can ...
2
votes
3answers
247 views

Pulling Server Stats for Remote Monitoring

I'd like to write my own server monitoring app. Ideally it could show stats like load, uptime, cpu activity, most active processes, memory usage by process, etc. What's the best way to grab that ...
1
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2answers
866 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 ...
0
votes
5answers
2k views

How can i enable telnet on ubuntu 10.4

I am trying to telnet from host 10.0.1.91 (centos) to host 10.0.11.162 (ubuntu). When I try to connect to the Ubuntu host, I get: telnet 10.0.11.162 4949 Trying 10.0.11.162... Connected to a.b.c ...
2
votes
1answer
168 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 ...
1
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1answer
430 views

munin monitor ssh tunnel traffic stats?

Attempting to generate a traffic graph to monitor tunnel traffic between two vps'es. two servers: 111.111.111.111 & 222.222.222.222 111 is an app server, 222 is a db server. Proper iptables ...
1
vote
2answers
3k views

Munin graphing by CGI

I have Munin working just fine, but any time I try to do cgi graphing - it just stops graphing... no errors in the log, nothing. I've followed the instructions here: ...
1
vote
0answers
478 views

Munin does not connect to SNMP service on Windows 2008r2

I'm using this tutorial to configure SNMP on my Windows server and Munin on my Linux server: http://munin-monitoring.org/wiki/Using_SNMP_plugins. SNMP on the Windows server works fine, I have checked ...
2
votes
1answer
912 views

Can't get IPMI sensor data

I have SuperMicro 1U 6016T-MTHF with Winbond WPCM450 BMC server. Here's my problem: root@foo:~# ipmitool -I open sensor FAN 1 | 8281.000 | RPM | ok | 400.000 | 576.000 | ...
2
votes
1answer
341 views

How do I get Apache stats into munin when proxied from nginx?

I have munin plugins for mysql and nginx working, but, I'm not sure how to get the apache plugin working (it's there, I just haven't setup apache yet). nginx proxies requests to apache running django ...
5
votes
1answer
864 views

Force Munin email notifications only on status change, not on update

I got Munin to notify me with email if certain values goes above my thresholds. This works very well and I am happy with it. However, there is a small glitch. If any of my values is in critical or ...
2
votes
2answers
4k views

Munin email notification

I am trying to get munin to notify me via email. I have configured munin and it reports critical and warning values but no alerts are being sent neither is any script being called. Can you please help ...
1
vote
1answer
1k views

How to setup Munin permissions?

I've just installed munin on my CentOS server but I can't get it to output anything to the html directory I set in /etc/munin/munin.conf htmldir /home/mydir/munin In ...
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vote
4answers
1k views

Installing Munin on Centos 6

I've hit problems installing munin on Centos 6. This seems to be a conflict between parts of Perl. I think the version of Perl is newer on Centos 6 (v5.10.1) When installing munin via yum I get ...
0
votes
2answers
576 views

Munin's graphic about Interrupts and context switches through the roof

I realized that sometimes one of our servers monitored by Munin had a strange graphic of "Interrupts and context switches". The server have a Xeon 5560 (8 cores) with 8gb of RAM. At rush hour, the ...
3
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1answer
412 views

How to send report created by Munin to email once per week

I have a page with Munin reports and I want to send the email with graphs once per week on specific email. Any thoughts on how to achieve this? Thanks!
0
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1answer
4k views

nginx + munin “internal redirection cycle”

I have an SSL domain that runs nginx, and I want to be able to access my munin graphs/stats on that domain. So, in the domain's server block, I added this: location = /munin/ { alias ...