# Copyright 1999-2024 Gentoo Authors # Distributed under the terms of the GNU General Public License v2 # This file contains descriptions of COLLECTD_PLUGINS USE_EXPAND flags. # Keep it sorted. aggregation - Build the aggregation plugin (aggregates multiplte values into a single value) amqp - Build the AMQP output plugin (transmits or receives values collected by collectd via the Advanced Message Queuing Protocol (AMQP)) apache - Build the apache input plugin (collects statistics from Apache's mod_status module) apcups - Build the apcups input plugin (reads various statistics about a connected uninterruptible power supply (UPS)) ascent - Build the ascent input plugin (reads and parses the statistics page of Ascent) battery - Build the battery input plugin (collects the battery's charge, the drawn current and the battery's voltage) bind - Build the bind input plugin (collects statistics from bind instances) buddyinfo - Build the buddyinfo input plugin (collects statistics from /proc/buddyinfo) capabilities - Build the capabilities input plugin (collects platform capabilities decoded from the hardware subsystems) ceph - Build the Ceph input plugin (collects statistics from the Ceph distributed storage system) cgroups - Build the cgroups input plugin (collects CPU accounting information for processes in a cgroup) check_uptime - Build a plugin to notify about uptime reset chrony - Build the chrony input plugin (collects statistics from a chrony NTP server) connectivity - Build the connectivity input plugin (monitors interface up/down status via netlink library) conntrack - Build the conntrack input plugin (tracks the number of entries in Linux's connection tracking table) contextswitch - Build the contextswitch input plugin (collects the number of context switches done by the operating system) cpu - Build the cpu input plugin (collects the amount of time spent by the CPU in various states) cpufreq - Build the cpufreq input plugin (collects the current CPU's frequency) cpusleep - Build the cpusleep input plugin (measures time spent by CPU in deep sleep mode) csv - Build the csv output plugin (writes to comma separated values (CSV) files) curl - Build the curl input plugin (reads streams using net-misc/curl and then parses them according to the configuration) curl_json - Build the curl_json input plugin (queries JavaScript Object Notation (JSON) data using net-misc/curl and parses it according to the user's configuration using dev-libs/yajl) curl_xml - Build the curl_xml input plugin (reads files using net-misc/curl and parses it as Extensible Markup Language (XML)) dbi - Build the dbi input plugin (executes SQL statements on databases and reads back the result) df - Build the df input plugin (collects file system usage information, i. e. basically how much space on a mounted partition is used and how much is available) disk - Build the disk input plugin (collects performance statistics of disks and, where supported, partitions) dns - Build the dns input plugin (collects statistics of your DNS traffic on port udp/53 using net-libs/libpcap) drbd - Build the Linux's Distributed Replicated Block Device (DRBD) input plugin (reads Linux's DRBD statistics) email - Build the email input plugin (opens a UNIX domain socket and starts accepting connections on that socket) entropy - Build the entropy input plugin (collects the available entropy on a system) ethstat - Build the ethstat input plugin (reads performance statistics directly from ethernet cards) exec - Build the exec input/output plugin (executes scripts / applications and reads values back) fhcount - Build the file handles input plugin (reports the number of used file handles) filecount - Build the filecount input plugin (counts the number of files in a directory and all its subdirectories) fscache - Build the fscache input plugin (collects information about the file-system based caching infrastructure for network file-systems and other slow media) gps - Build the gps input plugin (collects number of satellites seen by a GPS receiver using sci-geosciences/gpsd) gpu_nvidia - Build the NVIDIA GPU input plugin (collects stats from NVIDIA GPU) hddtemp - Build the hddtemp input plugin (collects the temperature of disks from hddtemp daemon) hugepages - Build the hugepages input plugin (collects the number of used and free hugepages on Linux) interface - Build the interface input plugin (collects information about the traffic, packets per second and errors of interfaces) ipc - Build the IPC input plugin (collects information related to shared memory) ipmi - Build the ipmi input plugin (reads hardware sensors from servers using the Intelligent Platform Management Interface (IPMI)) iptables - Build the iptables input plugin (collects statistics from a ip_tables based packet filter) ipvs - Build the IPVS input plugin (collects statistics from Linux IP Virtual Server) irq - Build the irq input plugin (collects the number of times each interrupt has been handled by the operating system) java - Build the java input plugin (embeds a JVM into collectd for writing plugins) load - Build the load input plugin (collects the system load) logfile - Build the logfile output plugin (receives log messages from collectd and writes them to a text file) logparser - Build the logparser plugin (allows for filtering and parsing log messages) log_logstash - Build the Logstash output plugin (writes collectd logs and events as Logstash JSON formatted events) lua - Build the LUA language binding plugin (uses dev-lang/lua) for writing plugins madwifi - Build the madwifi input plugin (collects information about Atheros wireless LAN chipsets from the MadWifi driver) match_empty_counter - Build the match_empty_counter filter plugin match_hashed - Build the match_hashed filter plugin match_regex - Build the match_regex filter plugin match_timediff - Build the match_timediff filter plugin match_value - Build the match_value filter plugin mbmon - Build the mbmon input plugin (collects information from mainboard sensors) mcelog - Build the mcelog input plugin (subscribes to Machine Check Exceptions (MCE) and dispatches notifications) md - Build the md input plugin (reports the number of disks in various states in Linux software RAID devices) memcachec - Build the memcachec input plugin (queries one or more given pages from a memcached instance and parses the returned data according to user specification) memcached - Build the memcached input plugin (collects statistics from memcached daemon) memory - Build the memory input plugin (collects physical memory utilization) modbus - Build the Modbus input plugin (reads register values from a Modbus "slave" via Modbus/TCP) mqtt - Build the MQTT plugin (sends metrics to and/or receives metrics from an MQTT broker using app-misc/mosquitto) multimeter - Build the multimeter input plugin (reads a voltage or current from a multimeter connected to a serial bus) mysql - Build the mysql input plugin (collects values from 'SHOW STATUS' command of a MySQL server) netlink - Build the netlink input plugin (collects statistics for interfaces, qdiscs, classes and filters using netlink socket) network - Build the network input/output plugin (send values to other and/or receive values from from other collectd instances) nfs - Build the nfs input plugin (collects information about the usage of the Network File System (NFS)) nginx - Build the nginx input plugin (collects number of requests handled and the number of current connections by connection state by the nginx daemon) notify_desktop - Build the notify_desktop output plugin (uses x11-libs/libnotify to display notifications to the user) notify_email - Build the notify_email output plugin (uses net-libs/libesmtp to send notifications to a configured email address) notify_nagios - Build the notify_nagios output plugin (sends notifications to Nagios as a passive check result) ntpd - Build the ntpd input plugin (collects statistics from a NTP server) numa - Build the numa input plugin (collects statistics of the Linux Non-Uniform Memory Access (NUMA) subsystem) nut - Build the nut input plugin (collects UPS statistics using the Network UPS Tools) olsrd - Build the olsrd input plugin (reads information about the Optimized Link State Routing daemon) onewire - Build the onewire (1-Wire) input plugin (collects temperature information from sensors) openldap - Build the OpenLDAP input plugin (reads monitoring information from OpenLDAP's cn=Monitor subtree) openvpn - Build the openvpn input plugin (reads the status file printed by OpenVPN) oracle - Build the oracle input plugin (executes SQL statements against Oracle database systems) ovs_events - Build an input plugin which reports link state changes from Open vSwitch (OVS) ovs_stats - Build an input plugin which reports bridge and interface statistics from Open vSwitch (OVS) pcie_errors - Build an input plugin which reports the PCIe errors perl - Build the perl language binding plugin (embeds a Perl interpreter into collectd for writing plugins) ping - Build the ping input plugin (measures network latency) postgresql - Build the postgresql input plugin (executes SQL statements against a PostgreSQL database) powerdns - Build the powerdns input plugin (collects statistics from the PowerDNS name server or recursor via control socket) procevent - Build the procevent input plugin (monitors process starts/stops via netlink library) processes - Build the processes input plugin (collects the number of processes, grouped by their state or detailed statistics about selected processes) protocols - Build the protocols input plugin (collects information about the network protocols supported by the system) python - Build the python language binding plugin (embeds a Python interpreter into collectd for writing plugins) redis - Build the Redis input plugin (collects usage information from Redis instances) routeros - Build the routeros input plugin (collects information from devices running RouterOS) rrdcached - Build the rrdcached input/output plugin (connects to rrdcached and submits updates for RRD files) rrdtool - Build the rrdtool output plugin (writes values to RRD-files) sensors - Build the sensors input plugin (reads hardware sensors from lm-sensors) serial - Build the serial input plugin (collects the traffic on serial interfaces) sigrok - Build the sigrok input plugin (reads measurements from any supported hardware from sigrok project) smart - Build the S.M.A.R.T input plugin (collects S.M.A.R.T statistics from disk drives) snmp - Build the snmp input plugin (reads values from network devices using SNMP) snmp_agent - Build an input plugin which implements an SNMP AgentX subagent that receives and handles queries from SNMP master agent and returns configured metrics statsd - Build the statsd input plugin (accepts statsd-type metrics from a UDP socket) swap - Build the swap input plugin (collects amount of memory currently written to swap) synproxy - Build the Linux SYNPROXY input plugin (collects metrics from /proc/net/stat/synproxy) sysevent - Build the rsyslog input plugin (collects system events from rsyslog) syslog - Build the syslog output plugin (receives messages from collectd and dispatches them to syslog) table - Build the table input plugin (parses table-like structured plain text) tail - Build the tail input plugin (follows logfiles, e.g. tail -f) tail_csv - Build the tail_csv input plugin (follows and parses CSV files, e.g. tail -f *.csv) target_notification - Build the target_notification filter plugin target_replace - Build the target_replace filter plugin target_scale - Build the target_scale filter plugin target_set - Build the target_set filter plugin tcpconns - Build the tcpconns input plugin (collects numbers of TCP connections to or from a specified port) teamspeak2 - Build the teamspeak2 input plugin (collects traffic statistics from a teamspeak2 instance) ted - Build the ted input plugin (connects to The Energy Detective and reads the current power over connected power lines) thermal - Build the thermal input plugin (reads ACPI thermal zone information) threshold - Build the threshold plugin (checks values against configured thresholds and creates notifications if values are out of bounds) turbostat - Build the turbostat input plugin (reads CPU frequency and C-state residency on modern Intel turbo-capable processors) unixsock - Build the unixsock input/output plugin (opens a UNIX domain socket and accepts connections) uptime - Build the uptime input plugin (keeps track of the system uptime) users - Build the users input plugin (counts the number of users currently logged into the system) ubi - Build the ubi input plugin (collects block state for flash memory devices with UBIFS) uuid - Build the uuid plugin (tries hard to determine the UUID of the system it is running on) varnish - Build the varnish input plugin (collects information about Varnish) virt - Build the (lib)virt input plugin (collects statistics about virtualized guests on a system) vmem - Build the vmem input plugin (collects information about the virtual memory subsystem of the kernel) vserver - Build the vserver input plugin (collects information about the virtual servers running on a system, using Linux-Vserver) wireless - Build the wireless input plugin (collects signal quality, signal power and signal-to-noise ratio for wireless LAN cards) write_graphite - Build the write_graphite output plugin (stores values in Carbon, the storage layer of Graphite) write_http - Build the write_http output plugin (sends metrics to a web-server using HTTP POST requests) write_influxdb_udp - Build the InfluxDB UDP output plugin (sends metrics to InfluxDB using UDP) write_kafka - Build the Kafka output plugin (sends metrics to Apache Kafka) write_log - Build the write_log output plugin (writes metrics to a file) write_mongodb - Build the MongoDB output plugin (stores values in MongoDB) write_prometheus - Builds the Prometheus output plugin (starts an internal webserver on port 9103 (configurable) and accepts scrape requests from Prometheus) write_redis - Build the Redis output plugin (stores values in Redis) write_sensu - Build the Sensu output plugin (sends metrics to Sensu Core, an open-source monitoring project) write_stackdriver - Build the Stackdriver output plugin (stores metrics in Google Stackdriver) write_syslog - Build the Syslog output plugin (sends metrics in CEE-enhanced syslog message format) write_tsdb - Build the TSDB output plugin (writes metrics to OpenTSDB, an open-source distributed time-series database based on Apache HBase) xencpu - Build the XEN CPU input plugin (collects XEN Hypervisor CPU stats using app-emulation/xen-tools) zfs_arc - Build the ZFS ARC input plugin (reports information such as the cache size, the various hits and misses (also as a ratio) and the transferred data) zookeeper - Build the zookeeper input plugin (reads data from Apache Zookeeper MNTR command)