Munin is a networked resource monitoring tool that can help analyze resource trends and "what just happened to kill our performance?" problems.

learn more… | top users | synonyms

0
votes
1answer
4k 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
192 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
163 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
193 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 ...
8
votes
2answers
286 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 ...
2
votes
1answer
576 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 ...
1
vote
1answer
917 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
314 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
175 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 ...
1
vote
2answers
741 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
775 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
2k 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
383 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
897 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
vote
1answer
92 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
414 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
847 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 ...
1
vote
1answer
134 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
3k 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 ...
1
vote
0answers
3k 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
3k 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
10k 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 ...
3
votes
2answers
3k views

Monitoring Nginx vhosts with Munin

I've set up Munin and so far, loving it. I got some basic Nginx monitoring set up and am able to monitor Nginx's status and RAM usage (with stub_status compiled into Nginx and activated in the ...
0
votes
1answer
432 views

How to interpret these munin stats of nginx?

The following stats are from a site where nginx was placed in front of a webserver to deliver static files and let the CMS application on the legacy webserver focus on the dynamic work. This is done ...
0
votes
1answer
177 views

Possible causes for large drop in measured firewall throughput

We run our application on ec2 and use Munin to monitor various metrics. We do a bi-weekly fresh deploy on new ec2 + rds instances. After our most recent fresh deploy, we noticed a 4x reduction in the ...
1
vote
1answer
584 views

Trying to move munin master from one debian server to another

I am trying to move munin master node from one debian server to another and preserve the history graphs, how could I proceed (maybe someone can write the instruction on munin wiki website). Regards, ...
3
votes
1answer
1k views

How to migrate Munin graph history

I have a pretty basic munin configuration, with a host in my munin.conf like this [old;name] and a Plugin, that gives host_name: name I changed the munin.conf to [new;name] the host_name in ...
1
vote
1answer
390 views

Disable graph_total in Munin Graphs

Is there any way to disable the graph_total for a Munin graph? For example, the apache_processes plugin generates a "total" line that becomes meaningless when there are multiple ports monitored. I'd ...
0
votes
1answer
1k views

Munin node not listing any plugins on new Fedora 14 installation

I have just installed munin-node from the base repo on Fedora 14 and then started it. I found that my munin server is not able to collect data from this node so I tried connecting via telnet to test. ...
3
votes
4answers
2k views

Stop Munin messages from /var/log/syslog

I am using munin on a system which is adding a log entry in syslog everytime the munin-node cron job executes. It is not an issue but it sometimes makes other errors spotting difficult. There are ...
3
votes
1answer
4k views

HTTP response time profiling

I have a nginx reverse proxy. The server is close to serving 600-700 requests per second. I have a Munin HTTP load time plugin which is outputting this: ...
0
votes
1answer
375 views

Munin FW_Conntrack Timing Out

I recently installed CSF firewall. Immediately after this, my Munin has stopped showing me graphs for Connections through firewall and ipconntrack. I looked into log files and found this ...
4
votes
2answers
4k views

Configure Munin graphs to show different time periods

I'm running a server with Munin installed through WHM cPanel. I've been googling around and I can't seem to find out how to do the following: A: Change a graph to show a different time period ...
7
votes
2answers
3k views

Munin graph size

Munin graphs is very small. That makes some multigrpahs useless for me. Is it possible to increase graph image size?
0
votes
1answer
959 views

RPM ERRORs on a cloud CentOS 5.5 server

I am attempting to add an rpm repo in order to Yum install a Munin node, however i keep getting the following error: rpm -Uvh ...
4
votes
1answer
7k views

how to get a total bandwidth graph in munin

I have munin-node in a basic default configuration on all my servers, I would like to create a summary chart that displays total bandwidth in/out http and another chart showing total bandwidth in/out ...
2
votes
2answers
491 views

Monitoring System for the cloud?

I need a monitoring system, much like ganglia / nagios that is build for the cloud. I need it to support : Adding / removing nodes dynamically. (Node shuts down, dose not imply node failure...) ...
1
vote
1answer
377 views

Apache Munin Graphs / Mod-Server-Status: Why Would There Be A Spike In Proceses But Not A Spike In Accesses

Our system just suffered through a huge surge in connections. Our load balancer graphs reflect this surge in connections. Netstat graphs reflect this surge in connections. Our Apache Processes ...
3
votes
2answers
2k views

Munin - Load old/historic data from a database to prepopulate the graphs?

I have a Munin setup that monitors some data from our database about the number of sales. My munin plugin extracts this data from the database with a query. I could run this query for any time in the ...
0
votes
2answers
804 views

Munin - 'by week/month/year' to use the total, rather than the average values?

I have some custom munin graphs that measure an aspect of our sales in our webapp. So I measure "Number of sales so far today". The graph goes up and then reset to 0 at midnight. This is what I want. ...
2
votes
3answers
2k views

Munin Graphs - Have one graph/plugin only update once per hour?

I am writing a custom munin plugin/graph and it's slightly computationally expensive. It's also unlikely to change much in a few minutes. Is it possible to have this one graph/plugin only update once ...
1
vote
2answers
2k views

Getting Pango-WARNING: Invalid UTF-8 string passed to pango_layout_set_text()

About three days ago, I noticed the exim mailqueue started filling up on one of my servers, and upon inspecting some of the emails using # exim -Mvb $ID, I noticed they were being sent to some system ...
2
votes
2answers
665 views

Stacking Munin graph plugins

Is there a simple way to stack existing plugin graphs and hide the originals? For example, I'd like to stack ping_ with say, ping_google.com and ping_amazon.com together. Do I need to write a new ...
9
votes
6answers
15k views

Nagios graphing solutions vs Munin/Cacti/Ganglia

I've got a nagios server setup for monitoring ~ 30 Windows servers. I want to add some trending charts. I've read that nagios graphing plugins are simple and many people use seperate, standalone ...
0
votes
1answer
2k views

Adjusting Munin's accept timeout

I have a Munin master that's contacting 5 nodes at the moment and I'm seeing one to two warnings like this in the munin-update.log. [WARNING] Call to accept timed out. Remaining workers: xyz;abc ...
2
votes
2answers
1k views

How do I run Munin plugins written in Ruby, using RVM?

I try to run some Munin plugins written in Ruby. I would like to use RVM, so Munin needs to know where to find Ruby. I tried to change the line calling munin-cron in the cron file as follows: */5 * * ...
0
votes
1answer
81 views

What group should a munin-node run as on MacOSX?

I'm installing a mac osx munin node, and the default value of User root Group root Produces an error that there is no 'root' group. What should the group be for a munin node?
1
vote
2answers
668 views

munin graph interpretation

I have a quick question. The following mysqlslowquerys / second graph marked 3 entries last day. http://img8.imageshack.us/i/picturert.png/ how do you interpret the peak legend? Is the peak ~3 ...
0
votes
1answer
1k views

MySQL per user monitoring

Is there a tool for monitoring per user MySQL usage? Like number of queries for example. I have been looking on Munin which I currently use, but did not find anything. A similar tool is the per user ...