NAME bolo aggr - Bolo Monitoring System Daemon SYNOPSIS bolo aggr [options] bolo aggr -c /path/to/bolo.conf bolo aggr -F DESCRIPTION bolo is a lightweight monitoring system kernel that aggregates counter data and sample readings, maintains event and state information, and broadcasts its findings to all connected *bolo subscribers*. These subscribers can perform a wide variety of functions, from storing metric data in RRDs to sending notifications on state changes. OPTIONS -V, --version Print version and copyright information. -c, --config */path/to/bolo.conf* Specify the path to an alternate configuration file. If not given, the default configuration file (/etc/bolo.conf) is used instead. -F, --foreground Normally, bolo aggr forks into the background and detaches from the controlling terminal, so that it can run as a system service. This flag disables that behavior. As a side effect, all logging will be forced to go to standard output, regardless of what syslog facility is specified in the configuration file. -D, --dump-config After reading the configuration, format it and print to standard output, then exit. This can be used to verify configuration changes before restarting bolo aggr. FILES /etc/bolo.conf Defaults configuration file that bolo aggr reads on start up. See bolo.conf(5) for details. /var/run/ In daemon mode (the default, unless -F is given), bolo aggr will write its process ID to this file, so that other programs (like /etc/init.d/bolo) can determine if the bolo aggr process is alive, and send signals to it. This can be changed via bolo.conf(5). /var/lib/bolo/save.db bolo aggr will periodically write everything it knows about states, events, counters and samples to this file, so that the information persists across program restarts, daemon crashes and system reboots. This can be changed via bolo.conf(5). NETWORK PRESENCE bolo aggr binds to to three separate endpoints when it starts up. The listener, which normally binds to *tcp://*:2999*, fields incoming requests submitting data. This port should be open to all monitored hosts and devices. bolo aggr cannot be queried via the listener endpoint. The broadcast endpoint (normally bound on *tcp://*:2998*), is where subscribers will connect when they wish to begin receiving broadcast data. This port should only be open to other parts of your monitoring system, since, by its nature, it will send out lots of potentially sensitive information. Finally, the controller endpoint (*tcp://*, by default), allows clients like bolo query(1) to query specific state and event information. Take great care when deciding what parts of your network can access this port, since it affords lots of control over the bolo kernel. All three of these endpoints can be changed via bolo.conf(5). SEE ALSO bolo(7) for general information, bolo(1) and bolo.conf(5) for documentation on the CLI tools, dbolo(1), dbolo.conf(5) for details on the distributed bolo agent, and read about subscribers in bolo2rrd(8), bolo2pg(8), bolo2meta(8), and bolo2redis(8) AUTHOR Bolo was designed and written by James Hunt and Dan Molik.