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Chapter 7. collectd plugins

Important

Red Hat is currently updating the plugin information in this guide for this release.

You can configure multiple collectd plugins depending on your Red Hat OpenStack Platform (RHOSP) 13 environment.

The following list of plugins shows the available heat template ExtraConfig parameters that you can set to override the defaults. Each section provides the general configuration name for the ExtraConfig option. For example, if there is a collectd plugin called example_plugin, the format of the plugin title is collectd::plugin::example_plugin.

Reference the tables of available parameters for specific plugins, such as in the following example:

ExtraConfig:
  collectd::plugin::example_plugin::<parameter>: <value>

ExtraConfig:
  collectd::plugin::example_plugin::<parameter>: <value>

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Reference the metrics tables of specific plugins for Prometheus or Grafana queries.

collectd::plugin::aggregation

You can aggregate several values into one with the aggregation plugin. Use the aggregation functions such as sum, average, min, and max to calculate metrics, for example average and total CPU statistics.

collectd::plugin::aggregation::aggregators
collectd::plugin::aggregation::interval

collectd::plugin::ampq

collectd::plugin::amqp1

Use the amqp1 plugin to write values to an amqp1 message bus, for example, AMQ Interconnect.

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Table 7.1. amqp1 parameters
Parameter	Type
manage_package	Boolean
transport	String
host	string
port	integer
user	String
password	String
address	String
instances	Hash
retry_delay	Integer
send_queue_limit	Integer
interval	Integer

Example configuration:

  Parameter_defaults:
    CollectdExtraPlugins:
      - amqp1
    ExtraConfig:
      collectd::plugin::amqp1::send_queue_limit: 50

  Parameter_defaults:
    CollectdExtraPlugins:
      - amqp1
    ExtraConfig:
      collectd::plugin::amqp1::send_queue_limit: 50

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collectd::plugin::apache

Use the apache plugin to collect Apache data.

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Table 7.2. apache parameters
Parameter	Type
instances	Hash
interval	Integer
manage-package	Boolean
package_install_options	List

Example configuration:

parameter_defaults:
    ExtraConfig:
        collectd::plugin::apache:
          localhost:
              url: "http://10.0.0.111/status?auto"

parameter_defaults:
    ExtraConfig:
        collectd::plugin::apache:
          localhost:
              url: "http://10.0.0.111/status?auto"

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Additional resources

For more information about configuring the apache plugin, see apache.

collectd::plugin::battery

Use the battery plugin to report the remaining capacity, power, or voltage of laptop batteries.

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Table 7.3. battery parameters
Parameter	Type
values_percentage	Boolean
report_degraded	Boolean
query_state_fs	Boolean
interval	Integer

Additional resources

For more information about configuring the battery plugin, see battery.

collectd::plugin::bind

Use the bind plugin to retrieve encoded statistics about queries and responses from a DNS server. The plugin submits the values to collectd.

collectd::plugin::ceph

Use the ceph plugin to gather data from ceph daemons.

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Table 7.4. ceph parameters
Parameter	Type
daemons	Array
longrunavglatency	Boolean
convertspecialmetrictypes	Boolean
manage_package	Boolean
package_name	String

Example configuration:

parameter_defaults:
    ExtraConfig:
        collectd::plugin::ceph::daemons:
           - ceph-osd.0
           - ceph-osd.1
           - ceph-osd.2
           - ceph-osd.3
           - ceph-osd.4

parameter_defaults:
    ExtraConfig:
        collectd::plugin::ceph::daemons:
           - ceph-osd.0
           - ceph-osd.1
           - ceph-osd.2
           - ceph-osd.3
           - ceph-osd.4

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Note

If an Object Storage Daemon (OSD) is not on every node, you must list the OSDs.

Note

When you deploy collectd, the ceph plugin is added to the Ceph nodes. Do not add the ceph plugin on Ceph nodes to CollectdExtraPlugins, because this results in a deployment failure.

Additional resources

For more information about configuring the ceph plugin, see ceph.

collectd::plugins::cgroups

Use the cgroups plugin to collect information for processes in a cgroup.

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Table 7.5. cgroups parameters
Parameter	Type
ignore_selected	Boolean
interval	Integer
cgroups	List

Additional resources

For more information about configuring the cgroups plugin, see cgroups.

collectd::plugin::connectivity

Use the connectivity plugin to monitor the state of network interfaces.

Note

If no interfaces are listed, all interfaces are monitored by default.

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Table 7.6. connectivity parameters
Parameter	Type
interfaces	Array

Example configuration:

parameter_defaults:
    ExtraConfig:
        collectd::plugin::connectivity::interfaces:
        - eth0
        - eth1

parameter_defaults:
    ExtraConfig:
        collectd::plugin::connectivity::interfaces:
        - eth0
        - eth1

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Additional resources

For more information about configuring the connectivity plugin, see connectivity.

collectd::plugin::conntrack

Use the conntrack plugin to track the number of entries in the Linux connection-tracking table. There are no parameters for this plugin.

collectd::plugin::contextswitch

Use the ContextSwitch plugin to collect the number of context switches that the system handles.

Additional resources

For more information about configuring the contextswitch plugin, see contextswitch.

collectd::plugin::cpu

Use the cpu plugin to monitor the time that the CPU spends in various states, for example, idle, executing user code, executing system code, waiting for IO-operations, and other states.

The cpu plugin collects _jiffies_, not percentage values. The value of a jiffy depends on the clock frequency of your hardware platform, and therefore is not an absolute time interval unit.

To report a percentage value, set the Boolean parameters reportbycpu and reportbystate to true, and then set the Boolean parameter valuespercentage to true.

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Table 7.7. cpu metrics
Name	Description	Query
idle	Amount of idle time	collectd_cpu_total{…,type_instance=idle}
interrupt	CPU blocked by interrupts	collectd_cpu_total{…,type_instance=interrupt}
nice	Amount of time running low priority processes	collectd_cpu_total{…,type_instance=nice}
softirq	Amount of cycles spent in servicing interrupt requests	collectd_cpu_total{…,type_instance=waitirq}
steal	The percentage of time a virtual CPU waits for a real CPU while the hypervisor is servicing another virtual processor	collectd_cpu_total{…,type_instance=steal}
system	Amount of time spent on system level (kernel)	collectd_cpu_total{…,type_instance=system}
user	Jiffies that user processes use	collectd_cpu_total{…,type_instance=user}
wait	CPU waiting on outstanding I/O request	collectd_cpu_total{…,type_instance=wait}

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Table 7.8. cpu parameters
Parameter	Type
reportbystate	Boolean
valuespercentage	Boolean
reportbycpu	Boolean
reportnumcpu	Boolean
reportgueststate	Boolean
subtractgueststate	Boolean
interval	Integer

Example configuration:

parameter_defaults:
    CollectdExtraPlugins:
      - cpu
    ExtraConfig:
        collectd::plugin::cpu::reportbystate: true

parameter_defaults:
    CollectdExtraPlugins:
      - cpu
    ExtraConfig:
        collectd::plugin::cpu::reportbystate: true

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Additional resources

For more information about configuring the cpu plugin, see cpu.

collectd::plugin::cpufreq

None

collectd::plugin::cpusleep

collectd::plugin::csv

collectd::plugin::csv::datadir
collectd::plugin::csv::storerates
collectd::plugin::csv::interval

collectd::plugin::curl_json

collectd::plugin::curl

collectd::plugin::curl_xml

collectd::plugin::dbi

collectd::plugin::df

Use the df plugin to collect disk space usage information for file systems.

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Table 7.9. df metrics
Name	Description	Query
free	Amount of free disk space	collectd_df_df_complex{…, type_instance="free"}
reserved	Amount of reserved disk space	collectd_df_df_complex{…, type_instance="reserved"}
used	Amount of used disk space	collectd_df_df_complex{…, type_instance="used"}

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Table 7.10. df parameters
Parameter	Type
devices	Array
fstypes	Array
ignoreselected	Boolean
mountpoints	Array
reportbydevice	Boolean
reportinodes	Boolean
reportreserved	Boolean
valuesabsolute	Boolean
valuespercentage	Boolean

Example configuration:

parameter_defaults:
    CollectdExtraPlugins:
      - df
    ExtraConfig:
        collectd::plugin::df::FStype: "ext4"

parameter_defaults:
    CollectdExtraPlugins:
      - df
    ExtraConfig:
        collectd::plugin::df::FStype: "ext4"

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Additional resources

For more information about configuring the df plugin, see df.

collectd::plugin::disk

Use the disk plugin to collect performance statistics of hard disks and, if supported, partitions. This plugin is enabled by default.

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Table 7.11. disk parameters
Parameter	Type
disks	Array
ignoreselected	Boolean
udevnameattr	String

Expand

Table 7.12. disk metrics
Name	Description
merged	The number of operations that can be merged together, already queued operations, for example, one physical disk access served two or more logical operations.
time	The average time an I/O-operation takes to complete. The values might not be fully accurate.
io_time	Time spent doing I/Os (ms). You can use this metric as a device load percentage. A value of 1 second matches 100% of load.
weighted_io_time	Measure of both I/O completion time and the backlog that might be accumulating.
pending_operations	Shows queue size of pending I/O operations.

Example configuration:

parameter_defaults:
    ExtraConfig:
        collectd::plugin::disk::disk: "sda"
        collectd::plugin::disk::ignoreselected: false

parameter_defaults:
    ExtraConfig:
        collectd::plugin::disk::disk: "sda"
        collectd::plugin::disk::ignoreselected: false

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Additional resources

For more information about configuring the disk plugin, see disk.

collectd::plugin::dns

collectd::plugin::dpdk_telemetry

collectd::plugin::entropy

collectd::plugin::entropy::interval

collectd::plugin::ethstat

collectd::plugin::ethstat::interfaces
collectd::plugin::ethstat::maps
collectd::plugin::ethstat::mappedonly
collectd::plugin::ethstat::interval

collectd::plugin::exec

collectd::plugin::exec::commands
collectd::plugin::exec::commands_defaults
collectd::plugin::exec::globals
collectd::plugin::exec::interval

collectd::plugin::fhcount

collectd::plugin::fhcount::valuesabsolute
collectd::plugin::fhcount::valuespercentage
collectd::plugin::fhcount::interval

collectd::plugin::filecount

collectd::plugin::filecount::directories
collectd::plugin::filecount::interval

collectd::plugin::fscache

None

collectd-hddtemp

collectd::plugin::hddtemp::host
collectd::plugin::hddtemp::port
collectd::plugin::hddtemp::interval

collectd::plugin::hugepages

Use the hugepages plugin to collect hugepages information. This plugin is enabled by default.

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Table 7.13. hugepages parameters
Parameter	Type	Defaults
report_per_node_hp	Boolean	true
report_root_hp	Boolean	true
values_pages	Boolean	true
values_bytes	Boolean	false
values_percentage	Boolean	false

Example configuration:

parameter_defaults:
    ExtraConfig:
        collectd::plugin::hugepages::values_percentage: true

parameter_defaults:
    ExtraConfig:
        collectd::plugin::hugepages::values_percentage: true

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Additional resources

For more information about configuring the hugepages plugin, see hugepages.

collectd::plugin::intel_rdt

collectd::plugin::interface

Use the interface plugin to measure interface traffic in octets, packets per second, and error rate per second. This plugin is enabled by default.

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Table 7.14. interface parameters
Parameter	Type
Default	interfaces
Array	[]
ignoreselected	Boolean
false	reportinactive
Boolean	true

Example configuration:

parameter_defaults:
    ExtraConfig:
        collectd::plugin::interface::interfaces:
           - lo
        collectd::plugin::interface::ignoreselected: true

parameter_defaults:
    ExtraConfig:
        collectd::plugin::interface::interfaces:
           - lo
        collectd::plugin::interface::ignoreselected: true

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Additional resources

For more information about configuring the interfaces plugin, see interfaces.

collectd::plugin::ipc

None

collectd::plugin::ipmi

collectd::plugin::ipmi::ignore_selected
collectd::plugin::ipmi::notify_sensor_add
collectd::plugin::ipmi::notify_sensor_remove
collectd::plugin::ipmi::notify_sensor_not_present
collectd::plugin::ipmi::sensors
collectd::plugin::ipmi::interval

collectd::plugin::iptables

collectd::plugin::irq

collectd::plugin::irq::irqs
collectd::plugin::irq::ignoreselected
collectd::plugin::irq::interval

collectd::plugin::load

Use the load plugin to collect the system load and an overview of the system use. This plugin is enabled by default.

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Table 7.15. plugin parameters
Parameter	Type
report_relative	Boolean

Example configuration:

parameter_defaults:
    ExtraConfig:
        collectd::plugin::load::report_relative: false

parameter_defaults:
    ExtraConfig:
        collectd::plugin::load::report_relative: false

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Additional resources

For more information about configuring the load plugin, see load.

collectd::plugin::logfile

collectd::plugin::logfile::log_level
collectd::plugin::logfile::log_file
collectd::plugin::logfile::log_timestamp
collectd::plugin::logfile::print_severity
collectd::plugin::logfile::interval

collectd::plugin::log_logstash

collectd::plugin::madwifi

collectd::plugin::match_empty_counter

collectd::plugin::match_hashed

collectd::plugin::match_regex

collectd::plugin::match_timediff

collectd::plugin::match_value

collectd::plugin::mbmon

collectd::plugin::mcelog

Use the mcelog plugin to send notifications and statistics that are relevant to Machine Check Exceptions when they occur. Configure mcelog to run in daemon mode and enable logging capabilities.

Expand

Table 7.16. mcelog parameters
Parameter	Type
Mcelogfile	String
Memory	Hash { mcelogclientsocket[string], persistentnotification[boolean] }

Example configuration:

parameter_defaults:
    CollectdExtraPlugins: mcelog
    CollectdEnableMcelog: true

parameter_defaults:
    CollectdExtraPlugins: mcelog
    CollectdEnableMcelog: true

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Additional resources

For more information about configuring the mcelog plugin, see mcelog.

collectd::plugin::md

collectd::plugin::memcachec

collectd::plugin::memcached

collectd::plugin::memcached::instances
collectd::plugin::memcached::interval

collectd::plugin::memory

The memory plugin provides information about the memory of the system. This plugin is enabled by default.

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Table 7.17. memory parameters
Parameter	Type
valuesabsolute	Boolean
valuespercentage	Boolean

Example configuration:

parameter_defaults:
    ExtraConfig:
        collectd::plugin::memory::valuesabsolute: true
        collectd::plugin::memory::valuespercentage: false

parameter_defaults:
    ExtraConfig:
        collectd::plugin::memory::valuesabsolute: true
        collectd::plugin::memory::valuespercentage: false

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Additional resources

For more information about configuring the memory plugin, see memory.

collectd::plugin::multimeter

collectd::plugin::mysql

collectd::plugin::mysql::interval

collectd::plugin::netlink

collectd::plugin::netlink::interfaces
collectd::plugin::netlink::verboseinterfaces
collectd::plugin::netlink::qdiscs
collectd::plugin::netlink::classes
collectd::plugin::netlink::filters
collectd::plugin::netlink::ignoreselected
collectd::plugin::netlink::interval

collectd::plugin::network

collectd::plugin::network::timetolive
collectd::plugin::network::maxpacketsize
collectd::plugin::network::forward
collectd::plugin::network::reportstats
collectd::plugin::network::listeners
collectd::plugin::network::servers
collectd::plugin::network::interval

collectd::plugin::nfs

collectd::plugin::nfs::interval

collectd::plugin::notify_nagios

collectd::plugin::ntpd

collectd::plugin::ntpd::host
collectd::plugin::ntpd::port
collectd::plugin::ntpd::reverselookups
collectd::plugin::ntpd::includeunitid
collectd::plugin::ntpd::interval

collectd::plugin::numa

None

collectd::plugin::olsrd

collectd::plugin::openldap

collectd::plugin::openvpn

collectd::plugin::openvpn::statusfile
collectd::plugin::openvpn::improvednamingschema
collectd::plugin::openvpn::collectcompression
collectd::plugin::openvpn::collectindividualusers
collectd::plugin::openvpn::collectusercount
collectd::plugin::openvpn::interval

collectd::plugin::ovs_stats

Use the ovs_stats plugin to collect statistics of OVS-connected interfaces. The ovs_stats plugin uses the OVSDB management protocol (RFC7047) monitor mechanism to get statistics from OVSDB.

Expand

Table 7.18. ovs_stats parameters
Parameter	Type
address	String
bridges	List
port	Integer
socket	String

Example configuration:

The following example shows how to enable the ovs_stats plugin. If you deploy your overcloud with OVS, you do not need to enable the ovs_stats plugin.

    parameter_defaults:
        CollectdExtraPlugins:
          - ovs_stats
        ExtraConfig:
          collectd::plugin::ovs_stats::socket: '/run/openvswitch/db.sock'

    parameter_defaults:
        CollectdExtraPlugins:
          - ovs_stats
        ExtraConfig:
          collectd::plugin::ovs_stats::socket: '/run/openvswitch/db.sock'

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Additional resources

For more information about configuring the ovs_stats plugin, see ovs_stats.

collectd::plugin::pcie_errors

Use the pcie_errors plugin to poll PCI config space for baseline and Advanced Error Reporting (AER) errors, and to parse syslog for AER events. Errors are reported through notifications.

Expand

Table 7.19. pcie_errors parameters
Parameter	Type
source	Enum (sysfs, proc)
access	String
reportmasked	Boolean
persistent_notifications	Boolean

Example configuration:

parameter_defaults:
    CollectdExtraPlugins:
       - pcie_errors

parameter_defaults:
    CollectdExtraPlugins:
       - pcie_errors

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Additional resources

For more information about configuring the pcie_errors plugin, see pcie_errors.

collectd::plugin::ping

collectd::plugin::ping::hosts
collectd::plugin::ping::timeout
collectd::plugin::ping::ttl
collectd::plugin::ping::source_address
collectd::plugin::ping::device
collectd::plugin::ping::max_missed
collectd::plugin::ping::size
collectd::plugin::ping::interval

collectd::plugin::powerdns

collectd::plugin::powerdns::interval
collectd::plugin::powerdns::servers
collectd::plugin::powerdns::recursors
collectd::plugin::powerdns::local_socket
collectd::plugin::powerdns::interval

collectd::plugin::processes

The processes plugin provides information about system processes. This plugin is enabled by default.

Expand

Table 7.20. plugin parameters
Parameter	Type
processes	Array
process_matches	Array
collect_context_switch	Boolean
collect_file_descriptor	Boolean
collect_memory_maps	Boolean

Additional resources

For more information about configuring the processes plugin, see processes.

collectd::plugin::protocols

collectd::plugin::protocols::ignoreselected
collectd::plugin::protocols::values

collectd::plugin::python

collectd::plugin::sensors

collectd::plugin::serial

collectd::plugin::smart

collectd::plugin::smart::disks
collectd::plugin::smart::ignoreselected
collectd::plugin::smart::interval

collectd::plugin::snmp

collectd::plugin::snmp_agent

Use the snmp_agent plugin as an SNMP subagent to map collectd metrics to relevant OIDs. The snmp agent also requires a running snmpd service.

Example configuration:

parameter_defaults:
    CollectdExtraPlugins:
        snmp_agent
resource_registry:
    OS::TripleO::Services::Snmp: /usr/share/openstack-tripleo-heat-
templates/deployment/snmp/snmp-baremetal-puppet.yaml

parameter_defaults:
    CollectdExtraPlugins:
        snmp_agent
resource_registry:
    OS::TripleO::Services::Snmp: /usr/share/openstack-tripleo-heat-
templates/deployment/snmp/snmp-baremetal-puppet.yaml

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Additional resources:

For more information about how to configure snmp_agent, see snmp_agent.

collectd::plugin::statsd

collectd::plugin::statsd::host
collectd::plugin::statsd::port
collectd::plugin::statsd::deletecounters
collectd::plugin::statsd::deletetimers
collectd::plugin::statsd::deletegauges
collectd::plugin::statsd::deletesets
collectd::plugin::statsd::countersum
collectd::plugin::statsd::timerpercentile
collectd::plugin::statsd::timerlower
collectd::plugin::statsd::timerupper
collectd::plugin::statsd::timersum
collectd::plugin::statsd::timercount
collectd::plugin::statsd::interval

collectd::plugin::swap

collectd::plugin::swap::reportbydevice
collectd::plugin::swap::reportbytes
collectd::plugin::swap::valuesabsolute
collectd::plugin::swap::valuespercentage
collectd::plugin::swap::reportio
collectd::plugin::swap::interval

collectd::plugin::sysevent

collectd::plugin::syslog

collectd::plugin::syslog::log_level
collectd::plugin::syslog::notify_level
collectd::plugin::syslog::interval

collectd::plugin::table

collectd::plugin::table::tables
collectd::plugin::table::interval

collectd::plugin::tail

collectd::plugin::tail::files
collectd::plugin::tail::interval

collectd::plugin::tail_csv

collectd::plugin::tail_csv::metrics
collectd::plugin::tail_csv::files

collectd::plugin::target_notification

collectd::plugin::target_replace

collectd::plugin::target_scale

collectd::plugin::target_set

collectd::plugin::target_v5upgrade

collectd::plugin::tcpconns

collectd::plugin::tcpconns::localports
collectd::plugin::tcpconns::remoteports
collectd::plugin::tcpconns::listening
collectd::plugin::tcpconns::allportssummary
collectd::plugin::tcpconns::interval

collectd::plugin::ted

collectd::plugin::thermal

collectd::plugin::thermal::devices
collectd::plugin::thermal::ignoreselected
collectd::plugin::thermal::interval

collectd::plugin::threshold

collectd::plugin::threshold::types
collectd::plugin::threshold::plugins
collectd::plugin::threshold::hosts
collectd::plugin::threshold::interval

collectd::plugin::turbostat

collectd::plugin::turbostat::core_c_states
collectd::plugin::turbostat::package_c_states
collectd::plugin::turbostat::system_management_interrupt
collectd::plugin::turbostat::digital_temperature_sensor
collectd::plugin::turbostat::tcc_activation_temp
collectd::plugin::turbostat::running_average_power_limit
collectd::plugin::turbostat::logical_core_names

collectd::plugin::unixsock

collectd::plugin::uptime

collectd::plugin::uptime::interval

collectd::plugin::users

collectd::plugin::users::interval

collectd::plugin::uuid

collectd::plugin::uuid::uuid_file
collectd::plugin::uuid::interval

collectd::plugin::virt

Use the virt plugin to collect CPU, disk, network load, and other metrics through the libvirt API for virtual machines on the host.

Expand

Table 7.21. virt parameters
Parameter	Type
connection	String
refresh_interval	Hash
domain	String
block_device	String
interface_device	String
ignore_selected	Boolean
plugin_instance_format	String
hostname_format	String
interface_format	String
extra_stats	String

Example configuration:

ExtraConfig:
    collectd::plugin::virt::plugin_instance_format: name

ExtraConfig:
    collectd::plugin::virt::plugin_instance_format: name

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Additional resources

For more information about configuring the virt plugin, see virt.

collectd::plugin::vmem

collectd::plugin::vmem::verbose
collectd::plugin::vmem::interval

collectd::plugin::vserver

collectd::plugin::wireless

collectd::plugin::write_graphite

collectd::plugin::write_graphite::carbons
collectd::plugin::write_graphite::carbon_defaults
collectd::plugin::write_graphite::globals

collectd::plugin::write_http

Use the write_http output plugin to submit values to an HTTP server by using POST requests and encoding metrics with JSON, or by using the PUTVAL command.

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Table 7.22. write_http parameters
Parameter	Type
ensure	Enum[present, absent]
nodes	Hash[String, Hash[String, Scalar]]
urls	Hash[String, Hash[String, Scalar]]
manage_package	Boolean

Example configuration:

parameter_defaults:
    CollectdExtraPlugins:
      - write_http
    ExtraConfig:
        collectd::plugin::write_http::nodes:
            collectd:
                url: “http://collectd.tld.org/collectd”
                metrics: true
                header: “X-Custom-Header: custom_value"

parameter_defaults:
    CollectdExtraPlugins:
      - write_http
    ExtraConfig:
        collectd::plugin::write_http::nodes:
            collectd:
                url: “http://collectd.tld.org/collectd”
                metrics: true
                header: “X-Custom-Header: custom_value"

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Additional resources

For more information about configuring the write_http plugin, see write_http.

collectd::plugin::write_kafka

Use the write_kafka plugin to send values to a Kafka topic. Configure the write_kafka plugin with one or more topic blocks. For each topic block, you must specify a unique name and one Kafka producer. You can use the following per-topic parameters inside the topic block:

Expand

Table 7.23. write_kafka parameters
Parameter	Type
kafka_hosts	Array[String]
kafka_port	Integer
topics	Hash
properties	Hash
meta	Hash

Example configuration:

parameter_defaults:
    CollectdExtraPlugins:
       - write_kafka
    ExtraConfig:
      collectd::plugin::write_kafka::kafka_hosts:
        - nodeA
        - nodeB
      collectd::plugin::write_kafka::topics:
        some_events:
          format: JSON

parameter_defaults:
    CollectdExtraPlugins:
       - write_kafka
    ExtraConfig:
      collectd::plugin::write_kafka::kafka_hosts:
        - nodeA
        - nodeB
      collectd::plugin::write_kafka::topics:
        some_events:
          format: JSON

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Additional resources:

For more information about how to configure the write_kafka plugin, see write_kafka.

collectd::plugin::write_log

collectd::plugin::write_log::format

collectd::plugin::zfs_arc

None