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/samples 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
字段类型: Duration
采集器配置字段:
interval默认值: 10s
-
ENV_INPUT_NET_IGNORE_PROTOCOL_STATS
跳过协议度量的报告
字段类型: Boolean
采集器配置字段:
ignore_protocol_stats默认值: false
-
ENV_INPUT_NET_ENABLE_VIRTUAL_INTERFACES
采集 Linux 的虚拟网卡
字段类型: Boolean
采集器配置字段:
enable_virtual_interfaces默认值: false
-
ENV_INPUT_NET_INTERFACES
期望采集的网卡（正则）
字段类型: List
采集器配置字段:
interfaces示例: 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
字段类型: Map
采集器配置字段:
tags示例:
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：
net¶
| Tags & Fields | Description |
|---|---|
| host ( tag) |
System hostname. |
| interface ( tag) |
Network interface name. |
| bytes_recv | Cumulative bytes received by the interface. Type: int | (count) Unit: digital,B |
| bytes_recv/sec | The number of bytes received by the interface per second. Type: int | (gauge) Unit: traffic,B/S |
| bytes_sent | Cumulative bytes sent by the interface. Type: int | (count) Unit: digital,B |
| bytes_sent/sec | The number of bytes sent by the interface per second. Type: int | (gauge) Unit: traffic,B/S |
| drop_in | Cumulative received packets dropped by the interface. Type: int | (count) Unit: count |
| drop_out | Cumulative transmitted packets dropped by the interface. Type: int | (count) Unit: count |
| err_in | Cumulative receive errors detected by the interface. Type: int | (count) Unit: count |
| err_out | Cumulative transmit errors detected by the interface. Type: int | (count) Unit: count |
| packets_recv | Cumulative packets received by the interface. Type: int | (count) Unit: count |
| packets_recv/sec | The number of packets received by the interface per second. Type: int | (gauge) Unit: count |
| packets_sent | Cumulative packets sent by the interface. Type: int | (count) Unit: count |
| packets_sent/sec | The number of packets sent by the interface per second. Type: int | (gauge) Unit: count |
| tcp_activeopens | Cumulative TCP active opens, where TCP sends SYN and enters SYN-SENT. Linux only Type: int | (count) Unit: count |
| tcp_attemptfails | Cumulative failed TCP connection attempts as defined by TCP-MIB AttemptFails. Linux only Type: int | (count) Unit: count |
| tcp_currestab | The number of TCP connections for which the current state is either ESTABLISHED or CLOSE-WAIT. Linux only Type: int | (gauge) Unit: count |
| tcp_estabresets | Cumulative TCP connections that transitioned directly to CLOSED from ESTABLISHED or CLOSE-WAIT. Linux only Type: int | (count) Unit: count |
| tcp_incsumerrors | Cumulative incoming TCP segments with checksum errors. Linux only Type: int | (count) Unit: count |
| tcp_inerrs | Cumulative incoming TCP segments received in error. Linux only Type: int | (count) Unit: count |
| tcp_insegs | Cumulative TCP segments received by the TCP layer. Linux only Type: int | (count) Unit: count |
| tcp_insegs/sec | The number of packets received by the TCP layer per second. Linux only Type: int | (gauge) Unit: count |
| tcp_maxconn | The limit on the total number of TCP connections the entity can support. Linux only Type: int | (gauge) Unit: count |
| tcp_outrsts | Cumulative TCP segments sent containing the RST flag. Linux only Type: int | (count) Unit: count |
| tcp_outsegs | Cumulative TCP segments sent by the TCP layer. Linux only Type: int | (count) Unit: count |
| tcp_outsegs/sec | The number of packets sent by the TCP layer per second. Linux only Type: int | (gauge) Unit: count |
| tcp_passiveopens | Cumulative TCP passive opens, where TCP receives SYN, replies SYN+ACK, and enters SYN-RCVD. Linux only Type: int | (count) Unit: count |
| tcp_retranssegs | Cumulative TCP segments retransmitted with one or more previously transmitted octets. Linux only Type: int | (count) Unit: count |
| tcp_rtoalgorithm | Algorithm identifier used to determine retransmission timeout values. Linux only Type: int | (gauge) Unit: N/A |
| tcp_rtomax | The maximum value permitted by a TCP implementation for the retransmission timeout, measured in milliseconds. Linux only Type: int | (gauge) Unit: time,ms |
| tcp_rtomin | The minimum value permitted by a TCP implementation for the retransmission timeout, measured in milliseconds. Linux only Type: int | (gauge) Unit: time,ms |
| udp_ignoredmulti | Cumulative ignored UDP multicast packets. Linux only Type: int | (count) Unit: count |
| udp_incsumerrors | Cumulative incoming UDP datagrams with checksum errors. Linux only Type: int | (count) Unit: count |
| udp_indatagrams | Cumulative UDP datagrams delivered to UDP users. Linux only Type: int | (count) Unit: count |
| udp_indatagrams/sec | The number of UDP datagram delivered to UDP users per second. Linux only Type: int | (gauge) Unit: count |
| udp_inerrors | Cumulative UDP packet receive errors. Linux only Type: int | (count) Unit: count |
| udp_memerrors | Cumulative UDP memory errors. Linux only Type: int | (count) Unit: count |
| udp_noports | Cumulative UDP packets received for unknown ports. Linux only Type: int | (count) Unit: count |
| udp_outdatagrams | Cumulative UDP datagrams sent from this entity. Linux only Type: int | (count) Unit: count |
| udp_outdatagrams/sec | The number of UDP datagram sent from this entity per second. Linux only Type: int | (gauge) Unit: count |
| udp_rcvbuferrors | Cumulative UDP receive buffer errors. Linux only Type: int | (count) Unit: count |
| udp_sndbuferrors | Cumulative UDP send buffer errors. Linux only Type: int | (count) Unit: count |