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System

The system collector collects system load, uptime, the number of CPU cores, and the number of users logged in.

Configuration

Preconditions

None

Collector Configuration

Go to the conf.d/host directory under the DataKit installation directory, copy system.conf.sample and name it system.conf. Examples are as follows:

[[inputs.system]]
  ##(optional) collect interval, default is 10 seconds
  interval = '10s'

  [inputs.system.tags]
    # some_tag = "some_value"
    # more_tag = "some_other_value"

After configuration, restart DataKit.

Can be turned on by ConfigMap Injection Collector Configuration or Config ENV_DATAKIT_INPUTS .

Can also be turned on by environment variables, (needs to be added as the default collector in ENV_DEFAULT_ENABLED_INPUTS):

  • ENV_INPUT_SYSTEM_INTERVAL

    Collect interval

    Type: Duration

    input.conf: interval

    Default: 10s

  • ENV_INPUT_SYSTEM_TAGS

    Customize tags. If there is a tag with the same name in the configuration file, it will be overwritten

    Type: Map

    input.conf: tags

    Example: tag1=value1,tag2=value2

Metric

For all of the following data collections, a global tag named host is appended by default (the tag value is the host name of the DataKit), or other tags can be specified in the configuration through [inputs.system.tags]:

 [inputs.system.tags]
  # some_tag = "some_value"
  # more_tag = "some_other_value"
  # ...

system

Basic information about system operation.

  • tag
Tag Description
host hostname
  • metric list
Metric Description Type Unit
cpu_total_usage The percentage of used CPU. float percent
load1 CPU load average over the past 1 minute. float -
load15 CPU load average over the past 15 minutes. float -
load15_per_core CPU single core load average over the past 15 minutes. float -
load1_per_core CPU single core load average over the past 1 minute. float -
load5 CPU load average over the past 5 minutes. float -
load5_per_core CPU single core load average over the last 5 minutes. float -
memory_usage The percentage of used memory. float percent
n_cpus CPU logical core count. int count
n_users User number. int count
process_count Number of Processes running on the machine. int -
uptime System uptime. int s

conntrack

Connection track metrics (Linux only).

  • tag
Tag Description
host hostname
  • metric list
Metric Description Type Unit
entries Current number of connections. int count
entries_limit The size of the connection tracking table. int count
stat_drop The number of packets dropped due to connection tracking failure. int count
stat_early_drop The number of partially tracked packet entries dropped due to connection tracking table full. int count
stat_found The number of successful search entries. int count
stat_ignore The number of reports that have been tracked. int count
stat_insert The number of packets inserted. int count
stat_insert_failed The number of packages that failed to insert. int count
stat_invalid The number of packets that cannot be tracked. int count
stat_search_restart The number of connection tracking table query restarts due to hash table size modification. int count

filefd

System file handle metrics (Linux only).

  • tag
Tag Description
host hostname
  • metric list
Metric Description Type Unit
allocated The number of allocated file handles. int count
maximum_mega The maximum number of file handles, unit M(10^6). float count

FAQ

Why no cpu_total_usage?

Some CPU acquisition features are not supported on some platforms, such as macOS.

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