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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171 views

Single Munin server to host multiple projects

We have multiple projects to be monitored with Munin, and naturally we have a separate Munin server for each project. But now that we're using Munin 2.0 + Nginx/fcgi and it's scalable with many ...
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1answer
256 views

munin-limits error, Missing configuration options for contact admin; skipping

I am getting an error when trying to configure email alerts with Munin. I've tried with both version 1.4.7 and 2.0.6. My config file: contacts admin contact.admin.command mail -s "Munin notification ...
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1answer
157 views

Munin - graph not visible when host down

This night, a server of my farm has failed But, in my munin server, i have lost graph of the host which failed during the night. After reboot host (this morning), and few minutes later, this host is ...
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1answer
648 views

munin server and munin node both on dynamic IP possible?

I configured munin-server and munin-node on same box and everything works fine. it is a fantastic monitoring tool. Now situation got complicated because I've to add a node which is located in another ...
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1answer
487 views

Munin 2 data not showing up on graph

I have a fresh installation of Munin 2.0.1 on my Ubuntu 12.04 and the first time I tried to view graphs, it showed them properly(After installation, I had to follow ...
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2answers
641 views

apache high system CPU time

I have a web server: ubuntu apache+php app+postgresql and a stats server: ubuntu apache+php - piwik and munin2 installed. The communication for munin2 is made through ssh. In munin i see a lot of ...
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2answers
438 views

ganglia graphs like munin for cpu, etc?

I'm coming from munin and a CPU graph contains data for system, user, nice, etc ALL on one graph. I just installed ganglia and setup the basic monitoring. It appears that each type of cpu data is a ...
0
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1answer
240 views

How to chart a per minute figure from an incrementing number in Munin

I've got a database number that increments in real time with certain page views. I want to make a Munin chart which charts not the total, but how it's changed from minute to minute. I know it's ...
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4answers
12k views

Munin on Centos 6 - missing perl MODULE_COMPAT_5.8.8

I'm trying to install Munin on a new VPS through yum install munin but I keep getting an error about a missing perl module: Requires: perl(:MODULE_COMPAT_5.8.8). This is the perl version currently ...
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2answers
292 views

Munin does not produce any output

To setup munin I did the following: yum install munin munin-node -y Then set the htmldir /var/www/virtualhosts/ssl.foo.com/bar [foo.com] address 127.0.0.1 use_node_name yes In ...
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2answers
113 views

Looking for a reference to munin single-letter prefixes

I am looking for a reference to what the prefixes shown in the munin graphs mean, e.g., m, u, k, etc. I can guess several, but it would be helpful to have a complete list.
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56 views

installed and configured munin server monitoring too: but where is ram usage? and mysql usage?

I'm at loss, have been trying to dig out something in documentation,but nothing... It seems mysql ram usage should be part of default Munin package, but they don't show up. Anyone can confirm me ...
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34 views

How to set munin-master to shows graphs even when the nodes (munin-node) are down?

How do I set munin-master to shows graphs even when the nodes (munin-node) are down? Is this even possible?
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1answer
815 views

Can Munin be configured to display hourly graphs?

By default, Munin (I’m using 1.4.5) shows graphs for the day, week, month, and year. Can I configure it to additionally display an hourly graph?
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2answers
1k views

How can I configure Munin to give me a “total” view of all my cloud servers?

I have a dozen load balanced cloud servers all monitored by Munin. I can track each one individually just fine. But I'm wondering if I can somehow bundle them up to see just how much collective CPU ...
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1answer
494 views

Monitor SMART Values of a SAS/SCSI drive with Munin

I'm trying to monitor my two SAS drives using the SMART Tools Plugin for MUNIN. On SATA drives its no problem, all SMART values are being shown. It seems that smartctl doesn't output valuable SMART ...
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1answer
51 views

Munin plugins with 2 lines

I need munin plugin with 2 lines in/out. What args i must put in my plugin like this graph view: I need to lines and zero line. Thank you.
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2answers
2k views

Network monitoring systems in Python

There are a host of open source network monitoring systems available. I tried we used to use Nagios, I have been hearing good things about Munin too. The thing is most networking monitors are written ...
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1answer
221 views

Run munin and all dependencies in userspace on AIX 6.1

Summary: I would like to have a portable munin in user space without installing anything at all on the client system, (like portable Firefox, without root tasks). I've downloaded all the ...
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0answers
624 views

Munin won't draw iowait

Munin shows high iowait (see legend), but does not reflect it on graphs. It has default config, except the graph_height (but the problem was from beginning, before the graph_height was chnaged). ...
3
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1answer
296 views

How to investigate peak in MySQL throughput?

Recently one of our servers has ran out of memory and crashed. After reviewing the munin graphs, it appears that the only metric (other than memory usage) that peaked just before the crash was the ...
0
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1answer
81 views

Munin graphs picking different data from munin-nodes

I am using Munin graphs with multiple VPSes at the moment and most of them are running Ubuntu version 10.04 LTS or greater. The issue is, im installing munin-node from the the default repo BUT some ...
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3answers
88 views

Innodb statistics

We're running InnoDB as a MySQL engine and using phpMyadmin to administer our database. Under Status -> Query statistics, phpMyadmin gives us the following: We would like to know where these ...
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1answer
389 views

SSH Tunneling for Munin

I had at home an NAS and in the datacenter a Server. I make an SSH Tunnel with the following command: autossh -fN -M20404 -R 1337:localhost:22 user@server (from the nas to the server) Its working ...
4
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1answer
821 views

Interpreting Munin graphs showing available entropy and MySQL slow queries in sync

We're experiencing performance issues on our website, and after reviewing our munin graphs, the only metrics we've found in sync are Available entropy and MySQL slow queries, with the latter ...
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3answers
12k 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 ...
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1answer
356 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?
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1answer
594 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 ' ...
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1answer
737 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 ...
2
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1answer
261 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] ...
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1answer
495 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 ...
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1answer
526 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 ...
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1answer
1k 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 ...
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1answer
510 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 ...
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1answer
392 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
119 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
813 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 ...
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2answers
342 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 ...
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1answer
334 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
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1answer
278 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 ...
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1answer
390 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 ...
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1answer
306 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
375 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 ...
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1answer
190 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] ...
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1answer
178 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) ...
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1answer
512 views

VMstat explanation needed

can somebody explain me this graph please? What does it show? What those green peaks mean?
5
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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 ...
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3answers
947 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 # ...
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3answers
4k 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 ...
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0answers
414 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) ...