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Net

Net 采集器用于采集主机网络信息，如各网络接口的流量信息等。对于 Linux 将采集系统范围 TCP 和 UDP 统计信息。

配置

成功安装 DataKit 并启动后，会默认开启 Net 采集器，无需手动开启。

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

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

  ## By default, gathers stats from any up interface, but Linux does not contain virtual interfaces.
  ## Setting interfaces using regular expressions will collect these expected interfaces.
  # interfaces = ['''eth[\w-]+''', '''lo''', ]

  ## Datakit does not collect network virtual interfaces under the linux system.
  ## Setting enable_virtual_interfaces to true will collect virtual interfaces stats for linux.
  # enable_virtual_interfaces = true

  ## On linux systems also collects protocol stats.
  ## Setting ignore_protocol_stats to true will skip reporting of protocol metrics.
  # ignore_protocol_stats = false

[inputs.net.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_NET_INTERVAL

    采集器重复间隔时长

    Type: TimeDuration

    ConfField: interval

    Default: 10s

  • ENV_INPUT_NET_IGNORE_PROTOCOL_STATS

    跳过协议度量的报告

    Type: Boolean

    ConfField: ignore_protocol_stats

    Default: false

  • ENV_INPUT_NET_ENABLE_VIRTUAL_INTERFACES

    采集 Linux 的虚拟网卡

    Type: Boolean

    ConfField: enable_virtual_interfaces

    Default: false

  • ENV_INPUT_NET_INTERFACES

    期望采集的网卡（正则）

    Type: List

    ConfField: interfaces

    Example: eth[\w-]+,lo

  • ENV_INPUT_NET_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.net.tags] 指定其它标签：

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

net

  • 标签
Tag Description
host System hostname.
interface Network interface name.
  • 指标列表
Metric Description Type Unit
bytes_recv The number of bytes received by the interface. int B
bytes_recv/sec The number of bytes received by the interface per second. int B/S
bytes_sent The number of bytes sent by the interface. int B
bytes_sent/sec The number of bytes sent by the interface per second. int B/S
drop_in The number of received packets dropped by the interface. int count
drop_out The number of transmitted packets dropped by the interface. int count
err_in The number of receive errors detected by the interface. int count
err_out The number of transmit errors detected by the interface. int count
packets_recv The number of packets received by the interface. int count
packets_recv/sec The number of packets received by the interface per second. int count
packets_sent The number of packets sent by the interface. int count
packets_sent/sec The number of packets sent by the interface per second. int count
tcp_activeopens It means the TCP layer sends a SYN, and come into the SYN-SENT state. int count
tcp_attemptfails The number of times TCP connections have made a direct transition to the CLOSED state from either the SYN-SENT state or the SYN-RCVD state, plus the number of times TCP connections have made a direct transition to the LISTEN state from the SYN-RCVD state. int count
tcp_currestab The number of TCP connections for which the current state is either ESTABLISHED or CLOSE-WAIT. int count
tcp_estabresets The number of times TCP connections have made a direct transition to the CLOSED state from either the ESTABLISHED state or the CLOSE-WAIT state. int count
tcp_incsumerrors The number of incoming TCP segments in checksum error. int count
tcp_inerrs The number of incoming TCP segments in error. int count
tcp_insegs The number of packets received by the TCP layer. int count
tcp_insegs/sec The number of packets received by the TCP layer per second. int count
tcp_maxconn The limit on the total number of TCP connections the entity can support. int count
tcp_outrsts The number of TCP segments sent containing the RST flag. int count
tcp_outsegs The number of packets sent by the TCP layer. int count
tcp_outsegs/sec The number of packets sent by the TCP layer per second. int count
tcp_passiveopens It means the TCP layer receives a SYN, replies a SYN+ACK, come into the SYN-RCVD state. int count
tcp_retranssegs The total number of segments re-transmitted - that is, the number of TCP segments transmitted containing one or more previously transmitted octets. int count
tcp_rtoalgorithm The algorithm used to determine the timeout value used for retransmitting unacknowledged octets. int count
tcp_rtomax The maximum value permitted by a TCP implementation for the retransmission timeout, measured in milliseconds. int ms
tcp_rtomin The minimum value permitted by a TCP implementation for the retransmission timeout, measured in milliseconds. int ms
udp_ignoredmulti TODO int count
udp_incsumerrors The number of incoming UDP datagram in checksum error.s int count
udp_indatagrams The number of UDP datagram delivered to UDP users. int count
udp_indatagrams/sec The number of UDP datagram delivered to UDP users per second. int count
udp_inerrors The number of packet receive errors. int count
udp_memerrors The number of memory errors. int count
udp_noports The number of packets to unknown port received. int count
udp_outdatagrams The number of UDP datagram sent from this entity. int count
udp_outdatagrams/sec The number of UDP datagram sent from this entity per second. int count
udp_rcvbuferrors The number of receive buffer errors. int count
udp_sndbuferrors The number of send buffer errors. int count

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