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
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¶
- 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 |