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Questions tagged [ganglia]

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

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

Ganglia is based on a hierarchical design targeted at federations of clusters. It leverages widely used technologies such as XML for data representation, XDR for compact, portable data transport, and RRDtool for data storage and visualization. It uses carefully engineered data structures and algorithms to achieve very low per-node overheads and high concurrency. The implementation is robust, has been ported to an extensive set of operating systems and processor architectures, and is currently in use on thousands of clusters around the world. It has been used to link clusters across university campuses and around the world and can scale to handle clusters with 2000 nodes.

The ganglia system comprises two unique daemons, a PHP-based web front-end, and a few other small utility programs.

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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 only authenticated users could access it. Would a…
Daniel Voina
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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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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 have the localhost configured to be the data source.…
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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 ganglia for aggregation and collection.…
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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…
Valter Silva
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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 because Ganglia service is blocking the system from…
Valter Silva
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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 that the other 2 servers send the monitoring…
Gavriel
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Network devices bandwidth monitoring and graphing with open source components?

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 protocol or somehow talk to sFlow/netflow agent…
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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 whisper got invented in the first place. If the problem…
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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 hits this line, it breaks: sudo apt-get install…
Abe
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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 fine. I'd like it to look like…
Robert
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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 to show a flat rate for days at a time, then it…
softbagel
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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 install mcollective from dpkg using…
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Ganglia - missing metrics for some of the servers

I've installed Ganglia on my Ubuntu 16.04 servers, recently. I basically followed the instructions here. The problem is, rrd files for sets of the metrics for some servers are missing. Most importantly, there are no metrics from the "master" node…
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Ganglia only displays localhost

I have a fresh install of Ganglia and it only shows the localhost. It seems no matter what I change nothing works. I'm sure I'm missing something stupid any help out there. /* This configuration is as close to 2.5.x default behavior as possible The…
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