Questions tagged [munin]

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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How to show monthly graphs on each node's index page in Munin

I am running Munin 2.0.73 on FreeBSD 13.2. The HTML files generated by Munin only show daily graphs ("by day") and weekly graphs ("by week") on a node's index page (http://...
Flux's user avatar
  • 115
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1 answer
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Munin haproxy plugin is not getting data even though munin-run show data and other plugins work fine

I have a Munin server (2.72) monitoring a lot of servers fine. I have a haproxy server with munin-node (2.0.73) running fine for every plugin except haproxy_* (haproxy_sessions_frontend, ...
Michel's user avatar
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Use of uninitialized value in numeric eq (==) at /usr/share/perl5/Net/Server/Fork.pm line 168

On my new Debian Bookworm, the file /usr/share/perl5/Net/Server/Fork.pm generates an error in logs each time Munin calls it. The error logged is "Use of uninitialized value in numeric eq (==) ...
Dom's user avatar
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1 vote
2 answers
513 views

munin-node worked fine, now "start operation timed out"

I have had munin-node running successfully on my machine for a while, but since recently it won't start anymore. There is no munin-node log for me to check, and systemctl status munin-node does not ...
Energya's user avatar
  • 121
1 vote
1 answer
198 views

How to aggregate Munin's interface traffic graphs?

My goal is to aggregate Munin's interface traffic graphs into one stacked graph for quick overview over the traffic across all servers. This is the an example of an individual graph, I want to ...
burnersk's user avatar
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1 answer
190 views

Which setting is limiting my active connections (ip_conntrack)?

I have a webserver with ispconfig (mysql & php & nginx). My munin statistic shows that there are the connecitons limited to about 9k. But I can't find a settings which is about 9000 which I ...
Wolfgang Pürstner's user avatar
1 vote
1 answer
574 views

Munin server can't connect to node

I want to add a new node running CentOS 7 to be monitored by my munin server (CentOS 7), but it cannot connect to it. It connects to my other nodes (also CentOS 7) just fine, and is able to ping the ...
Energya's user avatar
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1 vote
2 answers
265 views

Hide a field in munin graph

In my new server, a sensor for the ACPI plugin reports 0 K (-273.15 C) as temperature. So, the graph is absolutely useless as this temperature (absolute zero, obviously wrong) makes all the other ...
Magnetic_dud's user avatar
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2 answers
2k views

How to set Munin Critical/Warning alerts when value are under a threshold and not over?

I am trying to do a simple alert in Munin checking SW RAID 1 status where a metric of 2 disks is healthy, 1 disk is Warning and 0 disks is Critical. All the Munin monitors I've seen are triggered when ...
Jason's user avatar
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6 votes
1 answer
1k views

Munin-node plugins on Debian 10 cannot read from home directories. Debian 9 works fine

I am on a completely default Debian Buster installation. I have installed munin-node, which reports itself as version 2.0.49. I have a custom plugin in /etc/munin/plugins. It is a shell script that ...
peterpi's user avatar
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1 answer
200 views

Munin graph is incomplete with Tomcat Threads plugin

I have munin running rather fine on a CentOs webserver machine, except for one graph from the "Tomcat Threads" plugin that is incomplete. Why is it doing this? My server is far from overloaded. See ...
Michel's user avatar
  • 132
2 votes
2 answers
559 views

Munin - make daily plugin query (not every 5 minutes)

I have a metric that should only be checked and logged daily. Calculation is CPU-intensive, and querying multiple times per day returns the same value (i.e. it just wastes CPU time). Is it possible ...
BarsMonster's user avatar
1 vote
0 answers
471 views

Configuring Munin alerts on a per-command basis

I help administer a number of servers which use Munin for monitoring, and currently have all alert emails going to a specific monitoring email list. However, I would like some (but not all) alerts to ...
fluffy's user avatar
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81 views

Munin Mysql plugin and notifications

I can't figure out which trigger I could set in order to send an automatic notification in case mysql server stops by any cause (mem fault or whatever) Most of the triggers I've found are only ...
SirLouen's user avatar
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1 answer
247 views

munin plugin with broken graph

I've modified this munin plugin so that it tracks multiple values on the same graph. The symbolic link file name in my case is ipt_accounting_mail_web. Its purpose is to track both web and mail ...
Lucio Crusca's user avatar
1 vote
4 answers
710 views

Why does disk latency drop during periods of heavy writes?

Looking at the output of Munin's diskstats plugin (which is reading from /proc/diskstats) I'm noticing what seems peculiar to me. The disk is a SSD, and I would assume, magnetic or solid state, that ...
user476819's user avatar
1 vote
0 answers
191 views

What are network errors on munin graphs?

I have an VPS running OpenVPN server, that also does have munin installed for monitorig (I've installed it not because it's a real need, but because all these graphs looks cool). At first I've ...
Mikhail F.'s user avatar
4 votes
0 answers
221 views

Is it possible to add another graph 10 years to munin?

Is it possible to add a fifth graph (following after day, week, month, year), e.g. "10 years" to munin? If yes, is it possible without losing the existing data/graphs?
hellcode's user avatar
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1 answer
253 views

Munin-Graph for "eth* traffic" gets into negative values

I've installed an configured Munin on one node and munin-node on three nodes at digitalocean. First I got the issue that eth0-traffic graph was enabled but not generated - for this I found this patch:...
NoPoday's user avatar
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1 answer
1k views

Munin master cannot trace data from munin node

I'm new to Munin, I followed the tutorial on digital ocean to install munin master on a debian, and then a munin-node on another server also under debian 8.9. Munin master is working perfectly, from ...
Yvon Huynh's user avatar
1 vote
1 answer
2k views

munin-run mysql_ plugin returns data but munin server gets 'Bad exit' error

I've a Munin server with several Munin nodes, all configured using Ansible so configuration it's pretty the same. Systems are Debian Jessie. The mysql_* graphs from two of the servers are present but ...
sanzante's user avatar
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4 votes
1 answer
814 views

How do I silence one of Munin's plugin warnings?

I have a server running backups from various servers concurrently and get a lot of "Write IO Wait time" warnings. Is it possible to silence the warning of a single plugin on a single host? I think it ...
Dax's user avatar
  • 294
2 votes
0 answers
439 views

Configure Munin to monitor multiple instances on one node

I need to configure Munin to monitor multiple instances of a server daemon that run on a single host. I've tried creating a different named symlink for each instance, but unless I also pass an env ...
Alnitak's user avatar
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2 votes
1 answer
541 views

Munin monitoring of FreeBSD clients via munin-asyncd does not work

I have set up a Munin master node with the intent of monitoring different kinds of Unix machines. I have followed the instructions to the letter and found that while monitoring works flawless with all ...
herrbischoff's user avatar
1 vote
2 answers
697 views

Munin: cannot add new custom munin node

I've written my own simple munin-node implementation, but cannot get it to show on an master (2.0.33-1) in munin-cgi-html. munin.conf configuration: [uberlamp3] address 192.167.0.21 ...
BarsMonster's user avatar
0 votes
1 answer
353 views

Enabling munin-agent throught Windows Server Firewall

I installed munin-node on some servers and so far they seem to be working pretty nicely. However since I was asked to install the munin-agent on a Windows Server 2012 R2 I'm having some problems. ...
Rodrigo Sousa's user avatar
1 vote
1 answer
886 views

Munin stopped working after rebooting the server

Munin stopped working after rebooting the server. When I try to run, it gives: Unit munin-node.service entered failed state. munin-node.service never wrote its PID file. Failing. Failed to start ...
Dmitrii Maslennikov's user avatar
4 votes
1 answer
2k views

Munin Disk Latency Alerts

I have setup my Munin server and alerts and have tested them aswell. I have set the alerts for disk usage as under: df._dev_mapper_centos_root.warning 90 df._dev_md126p2.warning 90 df._dev_md126p1....
Daud Zeb's user avatar
0 votes
1 answer
1k views

Munin not sending email alerts

I am new to Linux. I have installed Munin and setup email alerts, but no alerts have been generated. Can you please help me? Here is part of my munin.conf config: contact.sha.command mail -s "Munin ...
Daud Zeb's user avatar
1 vote
2 answers
261 views

Why is CPU usage somewhat "nicer" today than yesterday?

First post here from an eager learner more educated with front end. Please consider the following munin graph: Considering the general traffic the site on this box got today was the "same" as ...
mayersdesign's user avatar
4 votes
1 answer
562 views

Configuring Munin's Tomcat plugin for Tomcat 8

Hi i've followed several guides about configuring tomcat plugin on a munin node but all of them was for tomcat 6 although i did neccessary corrections in tomcat-users.xml and whatnot, i couldn't get ...
Mustafa Yılmaz's user avatar
3 votes
1 answer
3k views

Munin node not showing up in overview

I have munin and munin-node installed on a "master" server, (lets call it server1) and munin-node installed on a second server (let's call that one server2) I am fairly certain that my configuration ...
Zak's user avatar
  • 356
2 votes
4 answers
6k views

Munin could not draw graph

I configured the munin on Centos 7 and it is configured but the graph is not creating when I am going to check the current day graph it is not showing anything. I checked the log file munin-cgi-graph....
Shiraz Musaddique's user avatar
0 votes
1 answer
75 views

Page load time increased 7 times after Debian update 6 to 7

I updated Debian 6 to 7. After update HTTP page load time graph (Munin) increased from 0.1 to 0.7 seconds. What could be the problem? What could break and need to check? Thanks! Munin - HTTP load ...
user451555's user avatar
4 votes
1 answer
604 views

Munin: Why is the utilization by month higher than by year?

I just learned about Munin and I checked out some example diagramms. I don't get how the utilization by month is at about 60% and the utilization by year says its bellow around 10%. I would expect ...
yemerra's user avatar
  • 143
0 votes
1 answer
406 views

Munin plugin does not have access to nginx logs

I want Munin to graph nginx error codes, so I tried a couple of plugins I found: A Bash script: https://github.com/munin-monitoring/contrib/blob/master/plugins/nginx/nginx_error A Python script: ...
fulv's user avatar
  • 113
0 votes
2 answers
111 views

Server unresponsive: Is it Munin?

We have a dedicated machine that mostly serves as a webserver. It is running Plesk for several domains, our webservers and the munin central node that is connecting to around 10 other machines that ...
rewb0rn's user avatar
  • 27
1 vote
2 answers
968 views

Munin combine network traffic graph from multiple servers

I've been searching through munin wiki and docs, tried various combinations for setting custom graphs but all ended unsuccessfull. Thing is that I actually cannot understand the mechanism behind ...
titus's user avatar
  • 414
0 votes
1 answer
100 views

Get server stats by user

I run a server with centos, ispconfig, about 100 websites on it. It occasionally gets high load, but I have no real way to pinpoint whats causing this. I really want to see stats of hits/cpu usage per ...
anarki's user avatar
  • 1
1 vote
1 answer
635 views

munin not showing traffic of interfaces pfsense 2.2

I'm trying out some systems and plug ins for monitoring bandwidth I came to Munin to monitor the interfaces of my PFSense 2.2.6 installing Munin was very easy and on normal debian VM's I could see ...
Roel's user avatar
  • 33
5 votes
3 answers
2k views

Munin : notification when everything is ok

I use one Munin-Master to monitore 20+ servers, all run fine, except for one server. Last three Munin mails receveid : 05h25 infra :: backup2.infra :: Disk usage in percent OKs: /var is ...
Cédric Girard's user avatar
2 votes
2 answers
373 views

Aggregated munin graphs file is empty

I'm unable to aggregate some custom graphs I wrote. I know aggregation is functional, because I'm able to aggregate default plugins, but am unsure what's wrong with mine. munin.conf: [myapp;web-...
w00t's user avatar
  • 1,164
3 votes
1 answer
719 views

Munin/Nginx - Nginx prepending root path to file despite different path specifed with alias

I have installed munin (for the time being available here: http://brailsford.xyz/munin ) the problem is that whilst the core loads from /var/cache/munin/www - none o the static files load. I have the ...
AviateX14's user avatar
  • 175
0 votes
1 answer
3k views

Munin and mysql plugin

I've installed munin on a vps and I want to monitor mysql usage of 3 mysql servers, I have configured mysql_ plugin as follow: [mysql_*] env.mysqlconnection DBI:mysql:mysql;host=mysql1.neocrafters....
MacFresno's user avatar
4 votes
1 answer
4k views

Apache graphs and data not updating in Munin on Ubuntu 14.04

So I am rebuilding a server from Ubuntu 12.04 to Ubuntu 14.04; not doing the upgrade path because I would rather build from scratch in this case. I have installed Munin as I have done before in Ubuntu ...
Giacomo1968's user avatar
  • 3,571
0 votes
1 answer
235 views

CPU Load on Virtual Machine

This picture shows the CPU Usage of a Debian 8 installation running on a Virtual Machine (VMWare ESXi). I'm wondering about two things here Why doesn't the usage sum up to 200% (the virtual machine ...
0x4a42's user avatar
  • 1
1 vote
1 answer
3k views

Setting warning / critical thresholds in plugin-conf.d file

I can set warning / critical thresholds in munin.conf (for a plugin that I've written) like this: load_per_core.load_per_core.warning 0.2 # Low value to trigger warnings load_per_core.load_per_core....
Eric Clack's user avatar
2 votes
1 answer
464 views

Multiple munin-node daemons with different plugins on same machine

my company recently moved to a new infrastructure provider. We got a partially managed server there with a basic installation of Ubuntu 14.04. The provider also has munin-node (munin version 2.0.19) ...
Jan Uhlig's user avatar
1 vote
1 answer
337 views

Why is Munin being annoying?

We have a Munin server that's taken to some really strange behaviour lately. The website itself is working perfectly, we're getting our statistics, I'm getting paged, everything is otherwise fine ...
Ernie's user avatar
  • 5,362
0 votes
1 answer
461 views

Munin tomcat Graphs stay empty

on a Ubuntu 12.04 server I´ve installed munin and setup tomcat plugins following this thread. The Only Graphs that fills is JVM Memory all others (access,threads, volume stay empty) If i test sudo ...
toni's user avatar
  • 139

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