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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27
votes
4answers
18k views

Munin vs Nagios

We're currently using Nagios to monitor about 20 Linux machines (services and functional links). I just find out about Munin and I wonder if this is a Nagios replacement, or it can be used together ...
1
vote
1answer
147 views

monitoring nginx-plus vhost trafic with munin

I am using nginx-plus (the version you have to pay for) and I would like to monitor acces by vhost. When I used nginx free version, I could easily monitor accesses with the byprojects munin plugin: ...
1
vote
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: ...
1
vote
1answer
1k views

Munin - apache_watch_ plugin, does not show any data in the graphs that shows activity for per vhosts

I am using Munin for monitoring my server. I installed the apache_watch_ plugin so that i could see apache related activity. The graphs for apache_accesses, apache_processes and apache_volume work ...
2
votes
1answer
90 views

SELinux: no audit errors but nginx permission errors

I try to isolate a SELinux problem with nging/munin. I see that error message in "/var/log/nging/error.log": [crit] 8802#0: *55 connect() to unix:/var/run/munin/fcgi-html.sock failed (13: ...
2
votes
1answer
878 views

Adding total bandwidth graph to Munin

I've been trying to figure this out for an hour... how to get a total bandwidth graph (showing all network traffic) in Munin? I just installed Munin, got several plugins added but what I'd really like ...
1
vote
0answers
39 views

Nginx: proxy graphs from remote munin server

I'm trying to create, under a series of nginx hosted domains, a /graphs folder (so I'm trying to use proxy...) at which graphs from a remote munin server would be shown. The munin server is graphing ...
3
votes
1answer
94 views

Text in munin graphs corrupted

I'm having a problem in one of my servers, where munin is not able to write the text that accompanies each graph correctly. It is written as random squares, but I haven't found anything in the logs ...
0
votes
2answers
113 views

Export munin data, import it and rebuilt html and graph

I am trying to read data collected from a server to an other server. Reading Change a Munin server and keep the data seems show a way to do this. exporting rrd database using rrdtool dump importing ...
5
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 ...
1
vote
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
votes
1answer
315 views

Intermittent munin-cron error “There is nothing to do here, since there are no nodes with any plugins”

We've installed munin monitoring on one of our servers. Generally it seems to be working well but occasionally, 4 times in 2 months to be exact, munin-cron has generated the following error: ...
1
vote
1answer
693 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
2k views

How much memory can I safely assign to memcached?

I'm looking into using memcached on our server. We've just upgraded and now have a fairly powerful box: DELL PowerEdge R710 Linux RHEL 5 - 64bit 12GB RAM (We used to be on a 32bit 4GB box). The ...
1
vote
1answer
269 views

Suspicious Linux binary file in /tmp/ - Munin?

I have a CENTOS 6.6 x86_64 server running ConfigServer Firewall (installed by us) and Munin (installed by the datacentre). CSF has recently (and for no apparent reason) started sending us warnings, ...
0
votes
0answers
10 views

Interpreting Munin's memory graph high committed memory [duplicate]

I'm trying to make sense of these munin graphs I'm looking at, but I'm not sure what they're telling me. My Ubuntu Apache web server is crashing semi regularly and I can't tell why, but the big thing ...
1
vote
0answers
36 views

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

On a physical X86 server, the cpu's graph is not well draw. Basically the sum of all cpu's usages (system,user, nice, idle, etc) don't reach the 3200% (32 cores) See the image here I have already ...
1
vote
2answers
1k views

syntax error: unknown user 'munin' in statoverride file

Server running Ubuntu 12.04 lts I installed munin the other day on a server. I decided later to remove it with apt-get. I noticed that not everything was removed from the installation so manually ...
0
votes
0answers
59 views

Munin showing apache accesses per virtual host

I have different NameVirtualHosts defined in Apache2 running on debian wheezy. Munin is running and is showing me the apache accesses on "port 80". Every virtual host is writing its own log files and ...
3
votes
2answers
554 views

Munin not creating HTML files in Ubuntu Server 14.04

I have used munin in several servers and this is the first time is taking me so much time to set it up. When I telnet munin directly, I can list the services, there is no error at the logs and munin ...
0
votes
1answer
11 views

Increasing time window for Munin alert and don't send alert immediately

Let's say that I want to set load alert if load > 20 with Munin. However, Munin will immediately alert when the load spikes up to 20. Is it possible to adjust the alert integration time (time window), ...
0
votes
1answer
56 views

What to monitor (key indicators) on web and database server

I just installed Munin for monitoring my web and database server. I lot of plugins were included out-of-the box, but I could use some advice on which one is actually good key indicators to monitor. ...
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 ...
4
votes
2answers
528 views

Munin's smart plugin keeps reporting an error in the past because of the exit code

My hosting provider has inserted a hard drive into my server which seems to have had some sort of error in the past but a full offline smart check showed that everything is (about) ok at the moment. ...
1
vote
1answer
222 views

munin requires perl(RRDs)

I'm in RHEL6.3 and I'm installing munin from epel http://download.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm I already solved all dependencies except this one : Error: Package: ...
0
votes
1answer
47 views

Munin reading apache graph

Do I understand / read Munin apache Graph correct that today aroung lunch (12:00) 9 Clients visited apache +- 50 processes were running at this time and the load was around 50K / s?
0
votes
1answer
275 views

Monitoring network output bandwidth of server for each IP address

I've got a network of static file serving servers. I use nginx to serve the files, and munin to monitor the network traffic. I want to know the output bandwidth of the server that goes to each IP ...
0
votes
1answer
710 views

munin server and munin node both on dynamic IP possible?

I configured munin-server and munin-node on same box and everything works fine. it is a fantastic monitoring tool. Now situation got complicated because I've to add a node which is located in another ...
0
votes
0answers
65 views

How do I set up Munin to ping all devices in my LAN and alert me if anything is offline?

So I managed to set up Munin, which was tearful because it was my first encounter with Linux. But it now works and generates colorful little graphs. The real purpose of that exercise, however, was to ...
1
vote
0answers
999 views

Munin dynamic graph zoom (dynazoom) not working (Nginx, PHP-FPM)

Debian 7.5 Nginx/1.6.0 PHP 5.6.0RC2 (fpm-fcgi) (built: Jul 11 2014 08:17:52) Munin v2.0.21-2 I been searching all over the net for a few days for answers to my problem but it seems like no one knows ...
0
votes
1answer
768 views

Multiple munin-nodes per machine

I'm collecting statistics remotely through JMX. The munin JMX plugin allows you to select an URL to connect to when aggregating statistics. This allows me to collect statistics from hosts which do not ...
0
votes
2answers
88 views

Munin bandwidth_ plugin not showing data

I'm trying to graph the cummulative bandwidth on an interface using Munin. Apparently there is a bandwidth_ plugin for this (see ...
0
votes
1answer
26 views

Munin restart services like monit

The German monit wiki page says: Die gleichen Funktionen, aber mit einer aufwendigeren grafischen Web-Oberfläche versehen, bietet Munin Translation Same functions (as monit) but with a more ...
0
votes
1answer
81 views

Too many emails from munin

I have recently taken the time to look into munin and fix some of the plugins that wore not working. Among them yum. Now for the last few days there have been a few updates released for my centos and ...
1
vote
1answer
93 views

restrict shell commands for munin-node (netcat)

I've spent fair amount of day fiddling with this, and I'm about to give up (for today). I followed the instructions outlined here. All works at the moment. But to increase security I'd like to ...
1
vote
1answer
21 views

Permissions issue in Munin

I have a Fedora machine on which I have successfully installed and configured Munin. The issue that I now face is of permissions. So basically, I have a directory where I have pointed all my html ...
2
votes
1answer
397 views

Munin Postgres plugins: DBD::Pg not found

I'm trying to activate some of the Postgresql plugins for Munin. When I run munin-node-configure --suggest | grep postgres I get the following output: postgres_bgwriter | no | no [DBD::Pg ...
0
votes
2answers
456 views

munin-cron Unable to Copy Contents

I recently installed munin on my (Fedora12 based) server. Now, I wanted to get all the graphs in a static directory (The application runs on Django). So, I edited the file /etc/munin/munin.conf by ...
1
vote
2answers
1k 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 ...
1
vote
0answers
80 views

cannot reach munin port on other AWS instance

2 AWS instances, in the same region but different availability zones, one is in regular EC2 and the other is in VPC, both have an Elastic IP, both are 64bit Amazon Linux AMI 2014.03.1. Both are ...
0
votes
1answer
112 views

How do I change the email address that Munin alerts are sending from?

The issue I'm having here is that when I get an alert from Munin, I want it to create a ticket. When the ticket it created, it sends an email back to the email address that Munin sent from each time ...
1
vote
1answer
923 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 ...
1
vote
2answers
634 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 ...
9
votes
1answer
252 views

How to mark every deploy in munin?

Anyone knows if it's possible to mark every deploy with a red vertical line in munin graphs? It will be great to debug possible performance holes in the code. Thanks in advance!
0
votes
2answers
103 views

Should munin be password-protected?

We use Munin at work. There is a Munin install - which right now is open to the world. An admin doesn't think he needs to password-protect it. What's the worst that can happen? How can I convince ...
3
votes
1answer
3k views

How to change Munin's graph colors?

I started to use Munin for monitoring, but I want to change colors of the graph, which are drawn by it's 'loggrep' plugin. Is there any way to specify colors in the config file?
4
votes
3answers
161 views

Delaying munin notifications

I have a few servers that are monitored by munin, and fairly frequently one of a selection of units has a transient failure to read data. That gets me two emails, one telling me that all the values ...
1
vote
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 ...
2
votes
2answers
1k views

How do I change, sort, add, remove graphs with Munin?

To keep an eye on what's happening with our production servers I recently discovered Munin. It was trivial to install but I'm having a lot of trouble working out how to add/remove graphs. I found ...
0
votes
0answers
16 views

Remove future entries from munin after date change

Having changed the date on the system during some unrelated testing, munin created entries in its database files based on the incorrect future date; it also recreated the summary files which use this ...