On Wed, Sep 26, 2007 at 02:00:57PM -0400, Fernanda Foertter wrote: > When I login through X11 I can do firefox --no-remote and see Ganglia > through X11 on Firefox.
what you are looking at is the ganglia frontend running in some web server, the URL should point to a host which is running gmetad and the PHP scripts that make up that page. there is no need (and usually is not recommended) that this server is part of the cluster in any way as it is going to be very busy updating RRDs and polluting its filesystem cache with all the metric updates, and will need to be running some sort of web server with PHP and be accessible from outside the cluster. > But what I really want is to install the web thing on another > separate computer that can get this info through some secure means > and have this be our intranet to see ganglia, if that makes sense. you probably want to consult with the rocks people about their ganglia setup on this, but as I mentioned before there is no reason why the server that runs gmetad and the PHP scripts need to be part of the cluster at all. all you need is that the server where gmetad runs can access any gmond that contains your cluster metric (any of them if you are using multicast as configured by default) and that is done through a TCP connection on port 8649. the configuration for gmetad in /etc/gmetad.conf should point to the gmond used as a cluster collector on your setup (probably localhost if using multicast and gmetad is installed in one of the nodes as it might seem from your explanation), the collector is defined also in the /etc/gmond.conf on each of the nodes (multicast by default) all details about your configuration are on those configuration files, and explanations on each one of the settings can be found in the corresponding man pages or in the documentation of the ganglia setup that rocks has. > Thanks for the crontab suggestion...I'll try and do that. depending on your configuration (if your host are set to be immortal in gmond.conf by host_dmax = 0 as set by default) you could be able to get a list of all servers which are defunct (not sending gmond updates for several seconds) by parsing the output of : gstat -d beware that this doesn't correspond with a node failure, as the only thing reported is that gmond in that node is not running anymore or not sending updates for some reason (probably a network misconfiguration) > And what's Nagios? this is offtopic for this mail list, but nagios is a monitoring system which is designed to let you get status about specific servers and their services and send notifications when there are problems with them, more information in : http://www.nagios.org/ > Any suggestions I'm more than open! probably all you need is to enable a second network interface in the server that is currently running gmetad and the web server and connect it to a different VLAN that is then allowed access from the internet to port 80. as I said before though, I have no experience with rocks clusters, so maybe asking them might be better. Carlo (without the s) ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2005. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ Ganglia-general mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/ganglia-general
