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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4
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3answers
969 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 # ...
1
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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 ...
1
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0answers
426 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) ...
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2answers
1k views

Munin stopped updating

today at 02:20 I noticed that suddenly Munin stopped updating its graphs. It is not showing blank data, the whole graphs are not being updated anymore. I run CentOs 5.7 (64) and ive installed Munin ...
5
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1answer
2k views

Can someone explain the “use-cases” for the default munin graphs?

When installing munin, it activates a default set of plugins (at least on ubuntu). Alternatively, you can simply run munin-node-configure to figure out which plugins are supported on your system. Most ...
0
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1answer
806 views

Munin quota usage

I'm trying to get Munin to report quota usage but it's not working. On top of quota_usage_ it says: # Usage: place in /etc/munin/node.d/quota-usage_<dev> (or link it there using # ln -s), for ...
1
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2answers
629 views

How to monitor servers in different network using munin?

I would like to monitor some servers using munin, that are in a different network and are not reachable directly by telnet. I wonder what are the possibilities: Can I install a central node in the ...
2
votes
2answers
2k views

'inode table usage' spiking every morning at 8am

I installed munin on my ubuntu server. It's showing my 'inode table usage' spiking every morning at 8am. It then rapidly curves down and settles over the course of several hours. What might cause ...
1
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1answer
625 views

Munin CPU usage graph doesn't go all the way to 100% on a busy VM

We've noticed that our Munin CPU graphs look a little odd on VMs that are quite busy. VM is running Ubuntu 8.04, VMware tools up-to-date and running, host is VMware ESXi 4.1.0 build 348481. This is ...
4
votes
5answers
8k views

apache server-status not found. check if mod_status is enabled

I've enabled the apache_ plugins on a munin node: ln -sv /usr/share/munin/plugins/apache_* /etc/munin/plugins/ After restarting the node with service munin-node restart here are the errors I'm ...
2
votes
1answer
4k views

Unable to add new munin node to existing munin master

I'm trying to add a node to an existing munin master (which I didn't setup but which seems to be working fine as it shows graphs for 8 existing nodes) and I'm having some troubles. Here are the steps ...
4
votes
4answers
672 views

What metrics should I monitor on my Linux-server?

I've been tasked with setting up monitoring of 300 servers, doing different things. I've been looking at various tools, such as Nagios, Munin, and others - so I got a pretty good idea on how I can ...
2
votes
3answers
232 views

Pulling Server Stats for Remote Monitoring

I'd like to write my own server monitoring app. Ideally it could show stats like load, uptime, cpu activity, most active processes, memory usage by process, etc. What's the best way to grab that ...
1
vote
2answers
576 views

How to read the scale of the munin monitoring system, tomcat accesses by day graph

The tomcat accesses by day graph in munin has a y axis that shows "accesses / second", and currently shows "66 m". It can't be 66 million accesses per second, a single server couldn't return that ...
0
votes
5answers
2k views

How can i enable telnet on ubuntu 10.4

I am trying to telnet from host 10.0.1.91 (centos) to host 10.0.11.162 (ubuntu). When I try to connect to the Ubuntu host, I get: telnet 10.0.11.162 4949 Trying 10.0.11.162... Connected to a.b.c ...
2
votes
1answer
151 views

What does a jagged committed memory graph mean?

We've been attempting to debug load programs on our servers, and along the way we've been looking at some graphs, like this one: (The white spaces are when the server got so hosed we couldn't ...
1
vote
1answer
320 views

munin monitor ssh tunnel traffic stats?

Attempting to generate a traffic graph to monitor tunnel traffic between two vps'es. two servers: 111.111.111.111 & 222.222.222.222 111 is an app server, 222 is a db server. Proper iptables ...
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2answers
2k views

Munin graphing by CGI

I have Munin working just fine, but any time I try to do cgi graphing - it just stops graphing... no errors in the log, nothing. I've followed the instructions here: ...
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0answers
380 views

Munin does not connect to SNMP service on Windows 2008r2

I'm using this tutorial to configure SNMP on my Windows server and Munin on my Linux server: http://munin-monitoring.org/wiki/Using_SNMP_plugins. SNMP on the Windows server works fine, I have checked ...
2
votes
1answer
618 views

Can't get IPMI sensor data

I have SuperMicro 1U 6016T-MTHF with Winbond WPCM450 BMC server. Here's my problem: root@foo:~# ipmitool -I open sensor FAN 1 | 8281.000 | RPM | ok | 400.000 | 576.000 | ...
2
votes
1answer
288 views

How do I get Apache stats into munin when proxied from nginx?

I have munin plugins for mysql and nginx working, but, I'm not sure how to get the apache plugin working (it's there, I just haven't setup apache yet). nginx proxies requests to apache running django ...
2
votes
1answer
635 views

Force Munin email notifications only on status change, not on update

I got Munin to notify me with email if certain values goes above my thresholds. This works very well and I am happy with it. However, there is a small glitch. If any of my values is in critical or ...
1
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2answers
2k views

Munin email notification

I am trying to get munin to notify me via email. I have configured munin and it reports critical and warning values but no alerts are being sent neither is any script being called. Can you please ...
1
vote
1answer
913 views

How to setup Munin permissions?

I've just installed munin on my CentOS server but I can't get it to output anything to the html directory I set in /etc/munin/munin.conf htmldir /home/mydir/munin In ...
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4answers
1k views

Installing Munin on Centos 6

I've hit problems installing munin on Centos 6. This seems to be a conflict between parts of Perl. I think the version of Perl is newer on Centos 6 (v5.10.1) When installing munin via yum I get ...
0
votes
2answers
466 views

Munin's graphic about Interrupts and context switches through the roof

I realized that sometimes one of our servers monitored by Munin had a strange graphic of "Interrupts and context switches". The server have a Xeon 5560 (8 cores) with 8gb of RAM. At rush hour, the ...
1
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1answer
298 views

How to send report created by Munin to email once per week

I have a page with Munin reports and I want to send the email with graphs once per week on specific email. Any thoughts on how to achieve this? Thanks!
0
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1answer
3k views

nginx + munin “internal redirection cycle”

I have an SSL domain that runs nginx, and I want to be able to access my munin graphs/stats on that domain. So, in the domain's server block, I added this: location = /munin/ { alias ...
1
vote
1answer
174 views

Disk IOs spikes at set times in CentOS

I recently installed Munin on my servers. Now 2 of my machines show big spikes in DiskIO at the same time, everyday at 4am. I run Centos 5.6 (64bit). I've checked my cron logs, and I have no personal ...
0
votes
1answer
148 views

If a Munin plugin fails, nobody gets notified. Why is this so?

I've built a bunch of munin plugins that monitor various back-end services. If the metrics dip below thresholds set in munin.conf, we're notified by email. However, if one of these services goes down ...
1
vote
1answer
168 views

Why is my munin plugin being double executed (concurrently)?

I have a custom made munin plugin that currently is being executed twice every time $ ps fax 16844 ? Ss 0:00 /usr/sbin/munin-node 18206 ? S 0:00 \_ /usr/sbin/munin-node 18863 ...
5
votes
2answers
244 views

How to disable updates for a host in Munin but keep the historical graphs?

I need to disable updates for a particular host but I want to keep the graphs for historical data. I've tried using update no on the host definition in munin.conf but that removes the host from the ...
1
vote
1answer
434 views

Munin cdef problem

I'm getting nuts writing a simple plugin to query my ehcache statistics. Look what i have so far: $ munin-run ehcache standardquerycache_cachehits.value 1779609 standardquerycache_cachemisses.value ...
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1answer
570 views

How to configure Munin to montior Microsoft SQL Server 2008

Is it possible to configure Munin to montior Microsoft SQL Server 2008? On Windows 2003 Server.
2
votes
3answers
2k views

How to monitor HTTP response error codes from nginx using munin?

I'm beginning to use Munin to monitor an in-production Nginx server. One thing I'm particularly interested in graphing is the rate of errors--HTTP responses with codes in the 50x range. I'm wondering ...
0
votes
1answer
266 views

munin-node in openvz-container not reachable from host-system

I have a problem figuring out why my openvz-container is not reachable from the outside (host-system) on port 4949. netstat in the container: [root@openvz ~]# netstat -utapn |grep 4949 tcp 0 ...
0
votes
1answer
144 views

Add marks at specified times on a Munin graph

I want to mark some events on my Munin graphs to see how the graphs change at these points. It seems that in RRD terms they can be created by VRULE command, but I can't find a way to use it with ...
0
votes
2answers
537 views

Collectd agent, Munin master

For monitoring and graphing of servers and services, I would like to make a setup where collectd is the agent, collecting the data on the server, and munin is on the monitoring server, collecting the ...
0
votes
1answer
652 views

Munin Aggregate Graph

I am trying to aggregate munin graphs (http://munin-monitoring.org/wiki/aggregate_examples) for my nginx_request plugin (http://exchange.munin-monitoring.org/plugins/nginx_request/version/2) The ...
4
votes
3answers
1k views

Munin Aggregate Graphs from several servers

I am using DNS round robin load balancing and have divided my total traffic onto multiple servers. Each server does around 300-400req/second but I am interested in having an aggregate graph telling me ...
1
vote
1answer
361 views

Problem: Munin Graph

I've been trying to install Munin for 15 days, I looked for information, analized logs, I even deleted and reinstalled Munin using YUM. I'm hosted at Media Temple on a VPS with CentOS. The problem is ...
1
vote
2answers
543 views

Best plugin for tracking Apache response codes with Munin

I'd like to monitor the rate of 404, 403, 500 etc errors in my Apache logs with Munin but I can't find a plugin to do this. Surely it exists?
1
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1answer
88 views

is there any problem with my server

Below is a Munin Service Monitor screenshot for netstat by day which have a lot of failed connection. so I need to know is this a serious issue?
4
votes
1answer
286 views

Does jmxremote affect tomcat performance?

I'd like to enable jmxremote to monitor Apache Tomcat resources utilization with Munin, but I want to know if this will affect the servers performance, is so, how much will it be impacted.
1
vote
1answer
674 views

How can I use munin-node apache_ with basic authentication?

munin-node-configure --suggest tells me that the apache_* nodes cannot be used: apache_accesses | no | no [Port 80: Authorization Required] apache_processes | no | no ...
0
votes
1answer
114 views

VPS (LAMP) Runs out of memory every so often

I have a VPS on CentOS 5, running LAMP. Twice now in the last 3 months the server has had to be rebooted due to being out of memory. Downtime ends up being an hour, before someone can look at it. I ...
0
votes
2answers
2k views

Munin access to MySQL

According to several tutorials, the following should work: Create a new user in MySQL. $ mysql -uroot -p > CREATE USER 'munin'@'localhost'; > exit; Use that user in munin to access the ...
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0answers
2k views

Installed Munin on CentOS, but it does not generate data

I've installed Munin on CentOS, in Munin directory, it only has a few files and I could not see the website data. The Munin log shows the connection to 127.0.0.1 was refused. I have tried to disable ...
3
votes
3answers
2k views

Removing a spike from RRDTool database

I've got an RRDtool graph that has a huge spike after a reboot. I've tried using the popular removespikes.pl script on it, but just returns a "No peaks found.!". What's the best way to take care of ...
7
votes
5answers
7k views

I need to replace munin with something more scalable [closed]

I have used munin on multiple servers for many years with great success, however with more than 100 munin-nodes and when there is load on the clients, the processing is timing out. I have made some ...