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NetStat

NetStat 指标展示，包括 Tcp 连接数、等待连接、等待处理请求、Udp Socket 连接等。

配置

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

[[inputs.netstat]]
  ##(Optional) Collect interval, default is 10 seconds
  interval = '10s'

## The ports you want display
## Can add tags too
# [[inputs.netstat.addr_ports]]
  # ports = ["80","443"]

## Groups of ports and add different tags to facilitate statistics
# [[inputs.netstat.addr_ports]]
  # ports = ["80","443"]
# [inputs.netstat.addr_ports.tags]
  # service = "http"

# [[inputs.netstat.addr_ports]]
  # ports = ["9529"]
# [inputs.netstat.addr_ports.tags]
  # service = "datakit"
  # foo = "bar"

## Server may have multiple network cards
## Display only some network cards
## Can add tags too
# [[inputs.netstat.addr_ports]]
  # ports = ["1.1.1.1:80","2.2.2.2:80"]
  # ports_match is preferred if both ports and ports_match configured
  # ports_match = ["*:80","*:443"]

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

配置技巧：

## (1) 配置关注的端口号
[[inputs.netstat.addr_ports]]
  ports = ["80","443"]

# (2) 配置两组端口，加上不同的 tag，方便统计
[[inputs.netstat.addr_ports]]
  ports = ["80","443"]
  [inputs.netstat.addr_ports.tags]
    service = "http"

[[inputs.netstat.addr_ports]]
    ports = ["9529"]
    [inputs.netstat.addr_ports.tags]
        service = "datakit"

# (3) 服务器有多个网卡，只关心某几个网卡的情况
[[inputs.netstat.addr_ports]]
  ports = ["1.1.1.1:80","2.2.2.2:80"]

# (4) 服务器有多个网卡，要求按每个网卡分别展示这个配置，会屏蔽掉 ports 的配置值
[[inputs.netstat.addr_ports]]
  ports = ["1.1.1.1:80","2.2.2.2:80"] // 无效，被 ports_match 屏蔽
  ports_match = ["*:80","*:443"] // 有效

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_NETSTAT_INTERVAL

    采集器重复间隔时长

    Type: TimeDuration

    ConfField: interval

    Default: 10s

  • ENV_INPUT_NETSTAT_ADDR_PORTS

    端口分组并添加不同的标签以便于统计

    Type: JSON

    ConfField: addr_ports

    Example: ["1.1.1.1:80","443"]

  • ENV_INPUT_NETSTAT_TAGS

    自定义标签。如果配置文件有同名标签，将会覆盖它

    Type: Map

    ConfField: tags

    Example: tag1=value1,tag2=value2

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.netstat.tags] 指定其它标签：

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

不分端口号统计的指标集：netstat，分端口号统计的指标集：netstat_port。

  • 标签
Tag Description
addr_port Addr and port. Optional.
host Host name
ip_version IP version, 4 for IPV4, 6 for IPV6, unknown for others
  • 指标列表
Metric Description Type Unit
pid PID. Optional. int count
tcp_close CLOSE : The number of TCP state be waiting for a connection termination request acknowledgement from remote TCP host. int count
tcp_close_wait CLOSE_WAIT : The number of TCP state be waiting for a connection termination request from local user. int count
tcp_closing CLOSING : The number of TCP state be waiting for a connection termination request acknowledgement from remote TCP host. int count
tcp_established ESTABLISHED : The number of TCP state be open connection, data received to be delivered to the user. int count
tcp_fin_wait1 FIN_WAIT1 : The number of TCP state be waiting for a connection termination request from remote TCP host or acknowledgment of connection termination request sent previously. int count
tcp_fin_wait2 FIN_WAIT2 : The number of TCP state be waiting for connection termination request from remote TCP host. int count
tcp_last_ack LAST_ACK : The number of TCP state be waiting for connection termination request acknowledgement previously sent to remote TCP host including its acknowledgement of connection termination request. int count
tcp_listen LISTEN : The number of TCP state be waiting for a connection request from any remote TCP host. int count
tcp_none NONE int count
tcp_syn_recv SYN_RECV : The number of TCP state be waiting for confirmation of connection acknowledgement after both sender and receiver has sent / received connection request. int count
tcp_syn_sent SYN_SENT : The number of TCP state be waiting for a machine connection request after sending a connecting request. int count
tcp_time_wait TIME_WAIT : The number of TCP state be waiting sufficient time to pass to ensure remote TCP host received acknowledgement of its request for connection termination. int count
udp_socket UDP : The number of UDP connection. int count

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