Monitoring with Ganglia by Matt Massie, Bernard Li, Brad Nicholes, Vladimir Vuksan

By Matt Massie, Bernard Li, Brad Nicholes, Vladimir Vuksan

Written via Ganglia designers and maintainers, this e-book exhibits you the way to assemble and visualize metrics from clusters, grids, and cloud infrastructures at any scale. are looking to music CPU usage from 20,000 hosts each ten seconds? Ganglia is simply the software you would like, when you understand how its major elements interact. This hands-on publication is helping skilled approach directors benefit from Ganglia 3.x.

Learn the best way to expand the bottom set of metrics you acquire, fetch present values, see mixture perspectives of metrics, and become aware of time-series traits on your info. You’ll additionally research real-world case reviews of Ganglia installs that characteristic hard tracking requirements.
* make certain even if Ganglia is an efficient healthy to your atmosphere
* find out how Ganglia’s gmond and gmetad daemons construct a metric assortment overlay
* Plan for scalability early on your Ganglia deployment, with important assistance and recommendation
* Take facts visualization to a brand new point with gweb, Ganglia’s net frontend
* Write plugins to increase gmond’s metric-collection strength
* Troubleshoot concerns you could stumble upon with a Ganglia deploy
* combine Ganglia with the sFlow and Nagios tracking structures

Contributors comprise: Robert Alexander, Jeff Buchbinder, Frederiko Costa, Alex Dean, Dave Josephsen, Peter Phaal, and Daniel Pocock.

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The globals section configures the general characteristics of the daemon itself. It should appear only once in the configuration file. 1: globals { daemonize = yes setuid = yes user = nobody debug_level = 0 max_udp_msg_len = 1472 Configuring Ganglia | 23 } mute = no deaf = no allow_extra_data = yes host_dmax = 86400 /*secs. Expires (removes from web interface) hosts in 1 day */ host_tmax = 20 /*secs */ cleanup_threshold = 300 /*secs */ gexec = no send_metadata_interval = 0 /*secs */ daemonize (boolean) When true, gmond will fork and run in the background.

Configure --with-gmetad LDFLAGS="-L/opt/local/lib" CPPFLAGS="-I/opt/local/include" Compile and install Ganglia: $ make $ sudo make install Solaris Convenient binary packages for Solaris are distributed in the OpenCSW collection. Follow the standard procedure to install the OpenCSW. Run the pkgutil tool on Solaris, and then use the tool to install the package: $ pkgutil $ CSWgangliagmetad The default location for the configuration files on Solaris (OpenCSW) is /etc/opt/csw/ ganglia. You can now start and stop all the Ganglia processes using the normal SMF utility on Solaris, as in: $ svcadm enable cswgmetad gweb Ganglia wouldn’t be complete without its web interface: gweb (Ganglia Web).

Debian-based distributions. To install gweb on a Debian-based Linux distribution, execute the following command as either root or user with high privilege: root@host:# apt-get install apache2 php5 php5-json This command installs Apache and PHP 5 to satisfy its dependencies, in case you don’t have it already installed. You might have to enable the PHP JSON module as well. ini You are ready to download the latest gweb. release Edit Makefile and set DESTDIR and APACHE_USER variables. On Debian-based distros, the default settings are the following: # Location where gweb should be installed to DESTDIR = /var/www/html/ganglia2 APACHE_USER = www-data ...

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