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Misc. Ganglia scripts, add-ons
This project forked from vvuksan/ganglia-misc
Misc. Ganglia scripts, add-ons
This is an attempt to make the Ganglia UI more usable. You should be able to drop this into your $HTTPD_ROOT/ganglia then run make to generate conf.php. Please modify Makefile to point the directory where you installed the code. Also note that Makefile will create directories /var/lib/ganglia/rrds and /var/lib/ganglia/dwoo which are required for UI to function. IMPORTANT ========= Make file will create a file called conf_default.php. These are default settings. If you would like to override any of the $conf settings put them in conf.php file ie. my conf.php looks like this <?php $conf['graphreport_stats'] = false; ?> That way upgrades are much simpler and we can add/change configuration options with as little impact as possible. New features ============ Views ===== Views are an arbitrary collection of hostname/metric graphs. They are defined using JSON files and stored in the /conf directory. View file names have to start with view ie. view_web_servers_vitals.json There are two types of views, standard (default) and regex views. Standard views are defined as follows {"view_name":"web_servers_vitals", "items": [ { "hostname":"web1", "metric":"disk_free"}, { "hostname":"web2", "graph":"cpu_report"} ] } Regex views allow using regex to match hostnames (need to specify view_type regex) e.g. {"view_name":"web_servers_wiki", "view_type":"regex", "items": [ { "hostname":"web-wiki.*", "metric":"disk_free"}, { "hostname":".*wiki", "graph":"cpu_report"} ] } Obviously you can write a regex that matches a single host. Easy Graph Aggregation ====================== You can also define add graphs created through easy graph aggregation by specifying "aggregate_graph": true then specifying all the regex rules to match host_regexes. For example this is one example. Save it as view_myview.json and put in the conf directory. { "view_name":"myview", "items":[ { "hostname":"web01.domain.com","graph":"cpu_report"}, { "aggregate_graph":"true", "host_regex":[ {"regex":"web-0[1-6]"}, {"regex":"web-2[3-6]"} ], "metric":"load_one", "graph_type":"line", "description":"Prod Web Servers load1" } ], "view_type":"standard" } Auto Rotation ============= Automatically rotate view graphs every 30 seconds with hour, day, week and month overview for each metric on a single page. It will rotate until page closed. Optional Graphs =============== Ability to define optional graphs that are show at the top of the page for any host. Those are defined using overrides stored in $GANGLIA_DIR/conf directory. You need to make sure that directory is writeable by the Apache/Web user. This should work like the normal Ganglia web UI. The difference is that you need to make the conf/ directory writeable by the Apache user. Search ====== You can search for a metric or a host in a live manner. You should be able to click on the host or metric in the search and Installation notes ================== IMPORTANT: You should install the PHP JSON extension. It comes with PHP 5.2+. If you are on 5.1 use pecl install json pecl is part of php-pear package on RHEL/CentOS. Make sure you have # cat /etc/php.d/json.ini extension=json.so On RHEL/CentOS 4, you will also need phpize which comes with the php-devel package. In recent versions, a native version of JSON encoding/decoding is used, but using the PECL extension is recommended for performance reasons. BUGS ==== In the search window when you click on a metric it should actually jump to the metric once the page is opened. That doesn't work. If you just press enter in the Location bar it does jump.
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