Ganglia is a scalable distributed monitoring system for high-performance computing systems such as clusters and grids.

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Adding more colors in the plots in the Ganglia Web Interface

I use ganglia to monitor my computer cluster. On Ganglia Web Interface, is it possible to add more colors in the plots? There seems to be 9 colors by default, which prevents me from seeing to which ...
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23 views

Ganglia showing both host names and IPs

I restarted the gmond daemon (sudo /etc/init.d/gmetad restart), and now the Ganglia web interface is showing both host names and IPs: As a result, each server now appears as two different entries ...
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33 views

Can Ganglia's gmond be configured so that it doesn't need to be restarted if the Ganglia server is restarted?

I use ganglia to monitor my computer cluster: (source of the image) When I restart the Ganglia server, the gmond daemon on the other servers in the cluster stop sending information to the Ganglia ...
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1answer
68 views

Ganglia's GPU Nvidia module: do we need to patch the ganglia-webfrontend?

I am trying to add the GPU Nvidia module in ganglia (/ganglia/gmond_python_modules/gpu/nvidia/). Do we need to apply the ganglia_web.patch patch? If I do not apply the patch, I don't see any GPU ...
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6 views

ganglia only shows unspecified cluster

I have configured a ganglia in my office to monitor server resource utilization. i have configured a data_source but its showing in ganglia web. data_source "test-cluster" 30 10.220.8.54:8649
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27 views

Ganglia private page

I have read the Ganglia documentation about authorization systems (https://github.com/ganglia/ganglia-web/wiki/Authorization-System). I would like to restrict all access to the page via htaccess so ...
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125 views

Graphs not showing in Ganglia web frontend

I have setup Ganglia as per the following site and everything went well.I was able to test both the gmetad and gmond services. But when i try to access the webfront-end via /server-ip/ganglia i dont ...
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33 views

Ganglia gmond client - send selected metrics

I have recently started testing ganglia for monitoring, some test linux dev clusters. I can successfully send data to the Ganglia monitoring host from Gmond clients on the clusters. Can I disable ...
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173 views

How to create custom graphs in Ganglia?

How can I create custom graphs in ganglia. I have couple of scripts written, which can return the data in intergers, I want to graph them in ganglia. I can get the output from my scripts every ...
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55 views

ganglia authentication between hosts sending data to gmond?

Assuming one works with Ganglia in unicast mode only, is it possible to authenticate hosts that send data to gmond and gmetad or one needs to implement IP access lists only?
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158 views

Is it overkill to use Ganglia and Nagios for one server? [closed]

In my home I run a Plex/Data server. It basically just serves everyone's files and then Plex to play movies and such. A Teamspeak server also runs on it, but nothing major other than those tasks. I ...
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1answer
560 views

Ganglia Running but Not Showing CPUs or Hosts

So I just set up ganglia on a single debian node. It followed a pretty simple process of 1 - installed from stable repo using apt-get install ganglia-monitor gmetad apt-get install ...
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259 views

Ganglia gmetad segfaults after running for a while (on AWS EC2)

We are using Ganglia to monitoring our cloud infrastructure on Amazon AWS. Everything is working correctly (metrics are flowing etc), except that occasionally the gmetad process will segfault out of ...
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1answer
56 views

How to know which script or executable is linked with a metric in ganglia?

I have just started to explore ganglia and my question is "How to know which script or executable is linked with a metric in ganglia?" The fact is that I don't know much about ganglia. I have good ...
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1answer
190 views

Ganglia - gmond + gmetad work, gweb does not

I have created an installation of Ganglia on a RHEL 6.5 EC2 instance. I have gmond, gmetad, and gweb all installed and configured on this host. I am only trying to monitor the localhost for now. I ...
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1answer
510 views

Setting up multiple grids in Ganglia

Has anyone set up multiple grids to show on a single UI with Ganglia? I know how to set up multiple clusters but would love to show Grids on one interface. Here's an example. ...
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1answer
60 views

Ganglia multicast with clustering

Let's say I have two hosts. One acts as the server where gmetad and a local gmond resides. It also has the web interface. I then have a client that only has gmond configure as follows. Anyways, ...
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492 views

How to install ganglia on vmware esxi 5.5 host? [closed]

I want to install ganglia monitoring tool on esxi host so that i can monitor vm's usage. Can anyone give me a installation guide/link which i can refer/follow to install it? PS: I am total newbie to ...
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1answer
231 views

Access Internal Website from Public Internet

I have the current setup: laptop -> gatekeeper -> master_server -> my_machine There are 3 SSH's that I need to do to get to my_machine and I found a solution to do it in one step by editing SSH's ...
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1answer
317 views

What is the use of gmond collection group in unicast Ganglia setup?

There is a Ganglia aggregator running: gmond gmetad And three Ganglia agents working in unicast mode, to publish data to the aggregator. From one of the Ganglia agents, I manually push new ...
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403 views

How to make Statsd talk to Ganglia on EC2 (localhost)

As per topic, Im just trying to make this simple setup work. The services are running fine, but as far as I can tell statsd doesn't send anything over to ganglia. Ganglia is working fine I guess since ...
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1answer
63 views

What tool to retain and compare detailed previous ganglia data?

The loss of resolution in Ganglia makes it difficult for my product team to compare periods of load and test performance changes. We have bursty periods, separated by days or weeks. What tools are ...
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1answer
213 views

gmetric data submitted doesn't follow dmax value

I have a custom script that is querying a metric port for an application that I'm running and submitting parsed values to ganglia via gmetric. The script runs every minute, so I submit the data to ...
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182 views

Graph data in ganglia that is only received periodically without zeroing out

I'm wondering how to fix graphing gaps in a custom metric for my companies application that we retreive every five minutes via cronjob. The cronjob collects the data and puts it into rrds and sends to ...
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1answer
1k views

How configure Ganglia in Unicast correctly?

I'm working with Ganglia, great tool by the way! I'm trying to make this topology, with some nodes running centOS 6.4, centOS 5.9. So for this I'm trying this configuration for GMetad (the rest is ...
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2answers
90 views

CentOS won't present login menu after a new service was defined

Yesterday I was trying to install Ganglia in my virtual machine. After I defined Ganglia as a service I reboot the machine, but after that CentOS won't present the log in menu anymore. I think it's ...
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171 views

ganglia stops after rebooting the collector server

I have 3 machines. One of them collects ganglia data for all 3 of them. When I reboot this "collector" server, both gmetad and ganglia-monitor are started from the /etc/rc3.d, and I can see in tcpdump ...
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1answer
350 views

Network devices bandwidth monitoring and graphing with open source components? [closed]

We can use ganglia to monitor metrics on servers, but it does not seem to be an option for network gear monitoring. To monitor bandwidth of a switch, we need to either poll the port through SNMP ...
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539 views

Ganglia web generating “error collecting ganglia data (:): fsockopen error”

Now, I'm trying to install a new ganglia-web interface to replace an older one. Google searching on the error got me a lot, but none of it helps. One large distinction I note is that Google usually ...
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1answer
162 views

How to bring up an hourly graph for a specified period (rather than only “Last Hour”) in Ganglia

Sorry if this is a silly question but I can't find a way to make Ganglia display an hourly graph of a specified time. How do I do this? The version of my Ganglia Web Frontend is 3.1.7
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1answer
1k views

Is Ganglia's RRD module a bottleneck?

I want to monitor a LOT of metrics on a lot of machines, and from Graphite website, I noticed that ganglia's RRD compoent probably impose scalability issue from the following FAQ explaining why ...
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1answer
1k views

How to set up alerts on Ganglia?

How can I set up Ganglia so that I get an email if a machine in the cluster is using, for example, greater than 95% of physical RAM?
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706 views

Graphite Integration breaks ganglia/gmetad?

I'm trying to forward metrics from gmetad to graphite/carbon. After configuring carbon_server and ganglia_prefix in gmetad.conf gmetad starts losing metrics. gmetad Version is 3.3.5, ...
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196 views

Suppress user input when installing ganglia on ubuntu

I'm writing a hadoop configuration script, but I'm running into trouble installing ganglia. The script needs to run all the way through without any human intervention. Unfortunately, but when it ...
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2answers
585 views

ganglia graphs like munin for cpu, etc?

I'm coming from munin and a CPU graph contains data for system, user, nice, etc ALL on one graph. I just installed ganglia and setup the basic monitoring. It appears that each type of cpu data is a ...
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1answer
368 views

Can ZenOSS integrate Ganglia smoothly?

I like Ganglia for its Gmetric function, and I like its multi-layer capability. But Ganglia does not have healthiness check, alerting and etc. for the server monitor functionality. So it would be ...
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183 views

having trouble setting up ganglia on three machines

I am running ubuntu 11.10 I have one machine with gmetad, gmond and ganglia-webinterface. When I browse the web interface this machine picks up the local gmond output. I then added another machine, ...
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1answer
898 views

Ganglia homepage defaults to Cluster Report rather than Grid Report

As title says, the ganglia page is defaulting to cluster report, which is quite ugly as it is attempting to mesh the 2 clusters together. Both ganglia/?c=kvmsrvGrid and ganglia/?c=unspecified work ...
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1answer
537 views

Ganglia network stats incorrect

I am using ubuntu 10.04LTS. The Ganglia on all of my nodes is not reporting the network usage correctly. There is a fairly large amount of fluctuation on the actual network, but on ganglia it seems ...
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1answer
215 views

Installed ruby from source on debian, apt-get no longer works due to failed dependencies, how do I fix it?

I installed ruby from source, and everything ruby related seems to work just fine. I can't install anything that depends on ruby using apt because I don't want 2 versions of ruby installed. After I ...
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1answer
1k views

Redirecting syslog output for certain processes to a particular file

I must admit to being a complete syslog newbie. I haven't touched it until now, but I use its output on a daily basis, like most of us :) I currently have a problem with the gmetad daemon spamming my ...
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1answer
955 views

Alternative Ganglia interfaces?

I'm evaluating various metric collection systems and appreciate just about everything in Ganglia, except for the less than clean interface. Does anyone know of alternative Ganglia interfaces or ...
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3answers
3k views

Ganglia doesnt update graph

I started to notice my web interface hasn't updated the graph in hours. Each time I restart the gmond process on my clients, I see that the graphs does work. I come back an hour or so later and my ...
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2answers
3k views

Setting up Ganglia for multiple clusters

Say I have a bunch of clients with ONE master host that houses the gmetad and web interface. If I define one cluster (i.e. 'Cluster'), it works, but let's say I want a second set of cluster, how does ...
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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...) ...
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1answer
2k views

What does cpu_aidle mean in Ganglia reports?

The cpu_aidle graph mysteriously flat at roughly 12 percent on all machines reporting on a friend's cluster. Given how everything else CPU related is spiky, this seems unusual. Can anyone shed light ...
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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 ...
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791 views

How to install Ganglia on CentOS 5.4 64 bit?

In my case it's running on EC2 Compute Cluster HVM instance, so it should use TCP instead of UDP.
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2k views

Collectl Disk IO and Ganglia

I'm trying to push disk io statistics from collectl V3.3.5-4 (with the multicast and socket Perl modules installed) through to a Ganglia version 3.0.7 instance. Configured and followed the ...
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3answers
2k views

Using Ganglia on EC2

In Amazon EC2 I have a setup of proxies and 1 monitor (MON). I've installed gmond in the proxies and gmetad in MON. My data source for gmetad.conf in MON look like this: data_source "proxies" ...