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健康检查

Version-1.24.0

健康检查采集器可以定期去监控主机的进程和网络（如 TCP 和 HTTP）的健康状况，如果不符合健康要求，DataKit 会收集相应的信息，并上报指标数据。

配置

采集器配置

进入 DataKit 安装目录下的 conf.d/host 目录，复制 host_healthcheck.conf.sample 并命名为 host_healthcheck.conf。示例如下：

[[inputs.host_healthcheck]]
  ## Collect interval
  interval = "1m" 

  ## Check process
  [[inputs.host_healthcheck.process]]
    # Process filtering based on process name
    names = ["nginx", "mysql"]

    ## Process filtering based on regular expression 
    # names_regex = [ "my_process_.*" ]

    ## Process minimal run time
    # Only check the process when the running time of the process is greater than min_run_time
    min_run_time = "10m"

  ## Check TCP
  # [[inputs.host_healthcheck.tcp]]
    ## Host and port
    # host_ports = ["10.100.1.2:3369", "192.168.1.2:6379"]

    ## TCP timeout
    # connection_timeout = "3s"

  ## Check HTTP
  # [[inputs.host_healthcheck.http]]
      ## HTTP urls
      # http_urls = [ "http://local-ip:port/path/to/api?arg1=x&arg2=y" ]

      ## HTTP method
      # method = "GET"

      ## Expected response status code
      # expect_status = 200 

      ## HTTP timeout
      # timeout = "30s"

      ## Ignore tls validation 
      # ignore_insecure_tls = false

      ## HTTP headers
      # [inputs.host_healthcheck.http.headers]
        # Header1 = "header-value-1"
        # Hedaer2 = "header-value-2"

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

配置好后，重启 DataKit 即可。

可通过 ConfigMap 方式注入采集器配置 或 配置 ENV_DATAKIT_INPUTS 开启采集器。

也支持以环境变量的方式修改配置参数（需要在 ENV_DEFAULT_ENABLED_INPUTS 中加为默认采集器）：

  • ENV_INPUT_HEALTHCHECK_INTERVAL

    采集器重复间隔时长

    Type: TimeDuration

    ConfField: interval

    Default: 10s

  • ENV_INPUT_HEALTHCHECK_PROCESS

    检查处理器

    Type: JSON

    ConfField: process

    Example: [{"names":["nginx","mysql"],"min_run_time":"10m"}]

  • ENV_INPUT_HEALTHCHECK_TCP

    检查 TCP

    Type: JSON

    ConfField: tcp

    Example: [{"host_ports":["10.100.1.2:3369","192.168.1.2:6379"],"connection_timeout":"3s"}]

  • ENV_INPUT_HEALTHCHECK_HTTP

    检查 HTTP

    Type: JSON

    ConfField: http

    Example: [{"http_urls":["http://local-ip:port/path/to/api?arg1=x&arg2=y"],"method":"GET","expect_status":200,"timeout":"30s","ignore_insecure_tls":false,"headers":{"Header1":"header-value-1","Hedaer2":"header-value-2"}}]

  • ENV_INPUT_HEALTHCHECK_TAGS

    自定义标签。如果配置文件有同名标签，将会覆盖它

    Type: JSON

    ConfField: tags

    Example: {"some_tag":"some_value","more_tag":"some_other_value"}

指标

以下所有数据采集，默认会追加名为 host 的全局 tag（tag 值为 DataKit 所在主机名），也可以在配置中通过 [inputs.host_healthcheck.tags] 指定其它标签：

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

host_process_exception

  • 标签
Tag Description
host System hostname
process The name of the process
type The type of the exception
  • 字段列表
Metric Description Type Unit
exception Exception value int -
pid The process ID int int
start_duration The total time the process has run int μs

host_tcp_exception

  • 标签
Tag Description
host System hostname
port The port
type The type of the exception
  • 字段列表
Metric Description Type Unit
exception Exception value int -

host_http_exception

  • 标签
Tag Description
error The error message
host System hostname
url The URL
  • 字段列表
Metric Description Type Unit
exception Exception value int -

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