Monitoring with Ganglia

Index

A note on the digital index

A link in an index entry is displayed as the section title in which that entry appears. Because some sections have multiple index markers, it is not unusual for an entry to have several links to the same section. Clicking on any link will take you directly to the place in the text in which the marker appears.

Symbols

| (pipe symbol) in text returned by Nagios plug-in, Sending Nagios Data to Ganglia

A

access control

configuring for gmond, Access control

default setup or configuring new rules, Access Controls

ACLs (access control lists)

for gmond, Access control

testing with netcat for gmetad hosts, gmetad hierarchy and federation; some grids don’t appear on the Web

actions

allow or deny, Access control

view and edit, Actions

action_url attribute (Nagios services), pointing to Ganglia graph.php, Displaying Ganglia Data in the Nagios UI

active-active gmetad topology, gmetad topology

aggregated services, problems with, Check Multiple Metrics on a Specific Host

aggregrate graphs in gweb, The gweb Aggregated Graphs Tab

AJAX requests from JavaScript applications in client browsers, Web load

Android, mobile VoIP on (see Lumicall case study)

Apache Portable Runtime (APR) libraries, Requirements, Extended Metrics

major component of gmond, C/C++ Modules

Apache web servers

Apache virtual host configuration for gweb, Apache virtual host configuration

configuring authentication, Sample Apache configuration

expanding capabilities by adding modules, Extended Metrics

mod_sflow, Ganglia and ...