- chrony
Chrony daemon statistics: Local clock drift, offset to peers, etc.
+ - connectivity
+ Event-based interface status.
+
- conntrack
Number of nf_conntrack entries.
- processes
Process counts: Number of running, sleeping, zombie, ... processes.
+ - procevent
+ Listens for process starts and exits via netlink.
+
- protocols
Counts various aspects of network protocols such as IP, TCP, UDP, etc.
Acts as a StatsD server, reading values sent over the network from StatsD
clients and calculating rates and other aggregates out of these values.
+ - sysevent
+ Listens to rsyslog events and submits matched values.
+
- swap
Pages swapped out onto hard disk or whatever is called `swap' by the OS..
Sends data to Sensu, a stream processing and monitoring system, via the
Sensu client local TCP socket.
+ - write_syslog
+ Sends data in syslog format, using TCP, where the message
+ contains the metric in human or JSON format.
+
- write_tsdb
Sends data OpenTSDB, a scalable no master, no shared state time series
database.