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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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Keep showing old node in munin to review data

I am using munin to monitor some servers and now I have delete a server but I want to keep the graphs in my overview to be able to compare the data from the old server to the things that happen on the ...
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Munin - batch-update with data from past

I have a solution which measures some values and transmits it in batches when the network is available, so let's say once a day I get measurements for every 5 minutes of the past day. Is there any way ...
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13 views

How to stop munin from calculating the values in millis?

I wrote my own munin-plugin and I'm confused, how munin represents values between 0 and 1. Many values uses a notation with 'm'. I found the meaning of 'm' in this post: what does the 'm' unit ...
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22 views

Defining mean utilization of two GPUs changes other value or errors when used with negative

I'm monitoring some multi-GPU machines and want to make a combined CPU/GPU utilization graph with GPU as positive and CPU as negative. I can create such a graph just fine for a single GPU against 100 -...
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135 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 ...
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  • 111
1 vote
1 answer
71 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 ...
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47 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 ...
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1 vote
1 answer
224 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 ...
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  • 111
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2 answers
123 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 ...
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1 answer
527 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 ...
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1 answer
575 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 ...
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143 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 ...
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  • 113
2 votes
2 answers
404 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 ...
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1 vote
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294 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 ...
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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 ...
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1 answer
196 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 ...
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1 vote
4 answers
251 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 ...
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1 vote
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149 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 ...
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150 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?
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1 answer
202 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:...
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1 answer
879 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 ...
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1 vote
1 answer
1k 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 ...
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4 votes
1 answer
615 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 ...
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2 votes
0 answers
360 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 ...
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2 votes
1 answer
449 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 ...
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1 vote
2 answers
564 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 ...
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288 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. ...
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439 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 ...
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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....
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1 answer
902 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 ...
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1 vote
2 answers
241 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 ...
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4 votes
1 answer
524 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 ...
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3 votes
1 answer
2k 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 ...
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2 votes
4 answers
5k 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....
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1 answer
62 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 ...
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4 votes
1 answer
601 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 ...
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1 answer
331 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: ...
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  • 113
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2 answers
87 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 ...
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1 vote
2 answers
759 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 ...
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1 answer
67 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 ...
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1 vote
1 answer
561 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 ...
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5 votes
3 answers
1k 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 ...
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2 votes
2 answers
328 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-...
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3 votes
1 answer
547 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 ...
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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....
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3 votes
1 answer
3k 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 ...
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0 votes
1 answer
186 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 ...
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1 vote
1 answer
2k 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....
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2 votes
1 answer
346 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) ...
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1 vote
1 answer
319 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 ...
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