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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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10 views

Why does munin's diskstats plugin show values for throughput and iops, but none for latency and utilization?

My diskstats plugins does show values for throughput and iops, but not for latency and utilization. Why can this be? How can it be mitigated? This is the output, when I run the munin command fetch ...
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16 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 ...
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1answer
40 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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4answers
115 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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0answers
83 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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0answers
110 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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1answer
80 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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1answer
168 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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1answer
635 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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1answer
174 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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0answers
208 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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1answer
267 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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2answers
238 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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1answer
166 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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228 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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1answer
1k 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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1answer
514 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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2answers
186 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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1answer
359 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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1answer
1k 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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1answer
2k 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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1answer
55 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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1answer
592 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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1answer
179 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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2answers
63 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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1answer
234 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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1answer
59 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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1answer
399 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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3answers
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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2answers
220 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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1answer
387 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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1answer
2k 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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1answer
2k 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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1answer
124 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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1answer
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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1answer
184 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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1answer
205 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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1answer
311 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 ...
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1answer
1k views

Fail2Ban plug-in is enabled in Munin but the graph images are broken. How to fix?

I recently installed Fail2Ban on an Ubuntu 12.04.5 server and it’s working great. Now I want to setup Munin so it can monitor it and generate graphs/reports. I found that Munin has a built-in Fail2Ban ...
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1answer
643 views

Munin not creating html files in Ubuntu

I installed Munin in a Ubuntu Server 14.04 with Apache 2.4.7 But after all configuration, Munin isn't creating the html files in the html dir. This are my files: munin.conf dbdir /var/lib/munin ...
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1answer
795 views

Munin: some pluggins stopped working after moving to different *virtual* host

I used munin as monitoring serfice and I was happy with it. It is located on localhost machine with CNAME being server.domain.com. Trying to access server.domain.com from remote machine showed up ...
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1answer
255 views

Munin aggregation not working (summing CPU time across servers)

I am trying to get an aggregated graph of CPU usage across some servers. I have come up with this so far: [totals] update no contacts no lb_cpu.graph_title LB Total User CPU lb_cpu....
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4answers
6k views

How to determine which processes have most inodes opened

Here is my problem, visibile in a munin chart: My used/opened inodes are "suddenly" constantly increasing. Is there a way to determine which process is keeping the most currently opened inodes? I ...
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1answer
649 views

Memcached in Munin

I tried to configure the munin to load the memcached plugin. But the memcached plugin wont show up when I add the --suggest to the munin-node-configure command. But I appear when I do not add that ...
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2answers
2k views

Why is the Munin server giving just 404 status when hitting /munin-cgi/munin-cgi-graph?

I am using an Amazon Linux distribution (a recent one). I'm trying to install munin in the local node (just one node, both node and master). So I tried: $ sudo yum install munin munin-node httpd ...
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1answer
2k views

Munin disk utilization calculation.

I have got intel ssd(series 530, 480gb). Data from intel site: Sequential Read - 540 MB/s Sequential Write - 490 MB/s Random Read - 48000 IOPS Random Write - 80000 IOPS Current load is about 5000 ...
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1answer
179 views

Exclude field in munin chart

I have written my first Munin plugin to monitor my WAN traffic at home. The chart includes the actual traffic (as DERIVE) and the maximum possible speed (as GAUGE) for my Internet connection. I want ...
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1answer
94 views

Munin not warning on trespassing warning level

I have a Munin installation which surveils a bunch of servers. Two of them have MySQL replications running of which Munin plots the slave lag by use of mysql_slave_status. [mysql-slave.nmk.loc] ...
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1answer
341 views

munin-node-win32: cannot use a batch file as plugin

I am having trouble getting a defined a plugin which is a batch file to run with Munin-node-win32 (1.6.1). According to the readme, it is capable of integrating external plugins defined in the [...
2
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1answer
4k views

CentOS 7 /proc/net/ip_conntrack: No such file or directory

yesterday I must hard-reset my server and from the reset I can see the following problem in the munin-node.log: 2015/04/28-04:10:02 CONNECT TCP Peer: "[::ffff:127.0.0.1]:58663" Local: "[::ffff:127.0....