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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restrict shell commands for munin-node (netcat)

I've spent fair amount of day fiddling with this, and I'm about to give up (for today). I followed the instructions outlined here. All works at the moment. But to increase security I'd like to ...
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34 views

monitoring nginx-plus vhost trafic with munin

I am using nginx-plus (the version you have to pay for) and I would like to monitor acces by vhost. When I used nginx free version, I could easily monitor accesses with the byprojects munin plugin: ...
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2answers
104 views

How do I change, sort, add, remove graphs with Munin?

To keep an eye on what's happening with our production servers I recently discovered Munin. It was trivial to install but I'm having a lot of trouble working out how to add/remove graphs. I found ...
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5 views

Remove future entries from munin after date change

Having changed the date on the system during some unrelated testing, munin created entries in its database files based on the incorrect future date; it also recreated the summary files which use this ...
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2answers
19 views

How to bind munin to use a vhost or port number?

Currently I'am able to access my munin setup using the default url. www.mydomain.com/munin For security reasons, I want to only allow Munin to be access using port number. Like this ...
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51 views

Munin not working, error message

Munin does not show any graph... When I make munin-update I have this error: /usr/share/munin/munin-update 2014/02/15 10:53:43 [ERROR] config error under [amavis] for 'group adm' : Parse error in ...
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24 views

Munin Data gathering - Some nodes fail gathering data

Hy Everybody I've run into a strange Problem with munin for which i didnt find any solution... maybe somebody here will be able to help. Im running the munin-master on a debian 7. Here's the config ...
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11 views

How to extract single day Munin graphs

We have one monitoring server and on that I install Munin. Now i need to extract Feb 1 Graphs. Is it possible to extract the graph and will it effect the latest graphs
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15 views

Ubuntu munin-node reports incorrect committed memory

Ever since we upgraded our vps server, munin's committed memory goes through the roof, and we don't even have that much physical memory on our server in the first place. Is this something we should ...
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47 views

Why does this iptables config prevent munin from working?

I have created an iptables config which I thought that I understood, however it seems to be preventing munin from generating graphs and I'm not sure why. If I disable iptables, munin will generate ...
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22 views

CPU graph in Munin showing 0.00 utilization

Munin Server installed on Redhat 5.6 is connected to one the Windows Server is showing CPU graph 0.00. I checked on Munin Server and find no problem. Not even permission error. Im sure CPU utilization ...
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74 views

How to access min/max/avg value in munin plugins?

I'm writing a munin plugin and display a GAUGE which displays a value which constantly increases. What I want to add to that plugin is a day/week/etc. average. I simply have to substract the day's ...
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68 views

Delaying munin notifications

I have a few servers that are monitored by munin, and fairly frequently one of a selection of units has a transient failure to read data. That gets me two emails, one telling me that all the values ...
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47 views

Munin graph Disk IOs for /dev/sda k unit interpretation

From Munin diskstats plugin Disk IOs for /dev/sda graph shows Max IO/sec -read/+write 1.75k/920.92. What does the k unit in Disk IOs graph mean?
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58 views

How to query a munin plugin via netcat?

I want to query a present Munin plugin from Nagios. As I would like to do some calculations and aggregations (the plugin reports data over a period of time) and not just look at the last values, the ...
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33 views

management network to a network port for additional ones munin and monit [closed]

management network to a network port for additional ones munin and monit I want to build a separate Netzwek for server management. I have several network cards a linux / debian / ubuntu with ...
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1answer
40 views

munin-node apache_ with basic authentication - please be more specific

Can someone please explain this to me: In this answer: munin-node apache_ with basic authentication there is a line saying: If you need authenticated access to the URL you can specify the ...
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1answer
143 views

syntax error: unknown user 'munin' in statoverride file

Server running Ubuntu 12.04 lts I installed munin the other day on a server. I decided later to remove it with apt-get. I noticed that not everything was removed from the installation so manually ...
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45 views

Munin: make plugin output depend on querying master

I have a Munin supersampling plugin which returns high resolution data (sample rate of 1 second). The node offering this plugin is queried by two Munin masters, one of which is a version 1.4 instance ...
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99 views

Munin plugins for monitoring software RAID?

Are there any good munin plugins for monitoring a RAID10 array, in more detail than the default munin-nodes-extra set?
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36 views

munin-node send data to more than one master?

I'm in the process of making everything on our server setups redundant, and so comes the monitoring. We have one virtual machine acting as munin master and all other virtual machines are munin nodes ...
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149 views

Munin disable dynazoom.html

Doing a quick google search for "Munin dynazoom.html doesn't work" yields many results. There doesn't seem to be a solution that works -- at least not that I have seen. I have munin installed on a ...
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1answer
71 views

Munin UNKNOWN spamming

By adding unknown_limit 50 to munin.conf I've been able to drastically decrease the number of emails I receive from hosts that generate an otherwise acceptable level of UNKNOWN values. The problem is ...
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1answer
28 views

Linode Munin Nodes

I have 3 servers in Linode. All of them are configured with private lan network. All 3 are able to ping each other. I have install a Munin master server in one of them and Munin node to all of them. ...
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58 views

Munin mysql plugins results inconsistent, with IPC::Sharelite store() error: Identifier removed

I've recently setup a munin-node on a CentOS server. All was working fine until I tried to add the apache plugin (which works fine). For some odd reason, the mysql plugins for munin that used to work ...
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23 views

Definition of nginx graphs in munin

Can anyone provide me with a definition of the "Nginx requests - by day" graph in Munin. I know what it suggests, but the units used dont seem to make sense. The vertical axis is titled Request per ...
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49 views

Munin Limits on COUNTER and DERIVE Data

For Munin plugins of COUNTER and DERIVE type, what values should I use for ${name}.warning and ${name}.critical values?
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79 views

Munin's load plugin does not appear

I just did a fresh install of Munin 2.0.6-4 on a Debian 7.1 server from the debian repositories. The "load" plugin appears as loaded: # munin-node-configure | grep load load | ...
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182 views

I have setup munin how do I set up alerts for specific parameters

I have setup alerts in munin.conf contacts user1 user2 user3 user4 contact.user1.command mail -s "Munin notification" mailid1@mydomain.in contact.user2.command mail -s "Munin notification" ...
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39 views

Munin Interpretation - Server Limits

I've installed Munin to monitor my debian (squeeze) webserver (2 x Intel Quad Xeon 4x2.66GHz, 16GB RAM, 2x1000GB HDD Raid). There are around 50k visits per day. The scripts are very simple and there ...
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2answers
142 views

No Graphs available in Munin

I have a problem using munin (on Ubuntu 10.05 LTS). No graphs are available. Instead, an image placeholder is shown. I tried different settings, but it does not work. I used ...
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1answer
62 views

Using munin for server monitoring

I want to use munin for monitoring my VPS servers. I'm just interested is it possible to use it without apache installing? So is it possible to install only munin-node on each node I want to monitor ...
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1answer
125 views

“sudo: no tty present” for munin plugin using password-less sudo

I am writing a plugin for munin to monitor something on our Ubuntu Linux server (which is on Amazon EC2). The plugin requires running a programme /usr/sbin/rabbitmqctl via sudo. I have the following ...
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22 views

using munin-plugins-rails to monitor rails app perfromance

I have been trying to configure munin-plugins-rails to monitor the performance of our rails apps from Munin. The graphs appear, but no data is shown in the graphs. The log files show Error output ...
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99 views

How to determine if you need to upgrade memory?

My CentOS server's munin graph shows high swap, but the amount of apps memory seems low. Does this still mean I need to upgrade my memory? What is causing all that swap? Is it because of the ...
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2answers
34 views

How to export list of hosts in Munin?

I have inherited a Munin installation and I want to make a list of all the monitored hosts. Is there a command or other way to export a list of all monitored hosts to CSV or XML?
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1answer
86 views

munin fw_conntrack going bananas after dist upgrade to debian wheezy

after i upgrade from squeezy to wheezy munin began doing sth weird. it seams as if it only keeps adding the numbers and does not show the current value but only the cumulative values... by the ...
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375 views

How to make munin graph (derive or counter) not per second?

I have values: 10:00 - 505 11:00 - 507 12:00 - 510 13:00 - 525 and i want get graph: 11:00 - 2 12:00 - 3 13:00 - 15 but have per second(munin run every 5 minutes): 11:00 - 2/300 12:00 - 3/300 ...
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1answer
40 views

How to set up HTTP authentication to Munin?

Today I installed and configured Munin on my server. I didn't like how it shows all those graphs without having any login system nor authentication. Is there a way to set up an authentication to ...
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1answer
292 views

Munin in a subdomain using Apache Virtual Host

I'm trying to install Munin in my server and configure the web interface to work in a subdomain. I've configured the subdomain stats.mysite.com and created the file ...
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62 views

set — $(cat /proc/loadavg)

Hi I have a munin plugin that does this load_fetch() { set -- $(cat /proc/loadavg) cat <<EOF ...
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1answer
362 views

Postfix Plugins for Munin not working

I have a fresh munin (system monitor) installation on a FreeBSD 9.1 machine up and running fine. Now I wanted to include our Postfix server on the same machine in munin, so I tried to run the standard ...
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1answer
66 views

munin aggregate graph problems

Munin is driving me crazy. I'm trying to get an aggregate graph working. Here is my conf file: [Mydomain;machine-1] address xxx.xxx.xxx.xxx use_node_name yes [Mydomain;machine-2] address ...
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1answer
60 views

How can I get Munin to generate image source paths properly?

I'm having trouble with Munin's comparison pages. All other pages work just fine. What happens is that the relative URLs it is generating for the img src parameters are wrong. In the snippet below you ...
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1answer
259 views

Munin : aggregate network traffic

I have a default configuration of munin-node on 3 of my servers, and I would like to create a summary chart that displays total output bandwidth. Here is what I have done minin.conf : ...
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1answer
126 views

How to make aggregate graphs of varnish in munin

I'm trying to sum the graphs of varnish in munin. I've tried with all the possibilities than i could but i don't manage to succeed. [group;Agregadas] update no varnish.graph_title Hit ...
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1answer
154 views

How do I configure munin to show separate graphs for virtual hosts on a single server?

I have a machine with several virtual hosts. How do I configure munin and munin-node to break up the network traffic/bandwidth by virtual host? i.e. vhost1.example.com, vhost2.example.com where both ...
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3answers
2k 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 ...
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145 views

How to mark every deploy in munin?

Anyone knows if it's possible to mark every deploy with a red vertical line in munin graphs? It will be great to debug possible performance holes in the code. Thanks in advance!
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212 views

Passively monitor IO wait spike on process level

We use munin and monit to keep track of general stats about our vps, in last a couple of weeks, we have been running into issues where random IO wait spike is killing our server performance. Since ...