如何配置 collectd-snmp 來輪詢路由器？

Question

我正在嘗試使用 Raspberry Pi 輪詢 TP-LINK 路由器的接口 MIB (IF:MIB)，然后將指標發送到 Librato。 設置 collectd 並將其與 Librato 集成完全沒有問題 - 我正在成功跟蹤其他指標（cpu、內存等）。 我面臨的挑戰是 collectd-snmp 插件配置。

我安裝了 net-snmp 並且可以“看到”路由器：

pi@raspberrypi ~ $ snmpwalk -v 1 -c public 192.168.0.1 IF-MIB::ifInOctets
IF-MIB::ifInOctets.2 = Counter32: 1206812646
IF-MIB::ifInOctets.3 = Counter32: 1548296842
IF-MIB::ifInOctets.5 = Counter32: 19701783
IF-MIB::ifInOctets.10 = Counter32: 0
IF-MIB::ifInOctets.11 = Counter32: 0
IF-MIB::ifInOctets.15 = Counter32: 0
IF-MIB::ifInOctets.16 = Counter32: 0
IF-MIB::ifInOctets.22 = Counter32: 0
IF-MIB::ifInOctets.23 = Counter32: 0

Pi 在 192.168.0.20 上，路由器在 192.168.0.1 上。 我的 collectd.conf 如下：

<Plugin snmp>
  <Data "ifmib_if_octets32">
    Type "if_octets"
    Table true
    Instance "IF-MIB::ifDescr"
    Values "IF-MIB::ifInOctets" "IF-MIB::ifOutOctets"
  </Data>
  <Host "localhost">
    Address "192.168.0.1"
    Version 1
    Community "public"
    Collect "ifmib_if_octets32"
    Interval 60
  </Host>
</Plugin>

當我重新啟動 collectd 時，出現以下錯誤：

pi@raspberrypi ~ $ sudo service collectd restart
[....] Restarting statistics collection and monitoring daemon: collectdNo log handling enabled - turning on stderr logging
MIB search path: $HOME/.snmp/mibs:/usr/share/mibs/site:/usr/share/snmp/mibs:/usr/share/mibs/iana:/usr/share/mibs/ietf:/usr/share/mibs/netsnmp
Cannot find module (IF-MIB): At line 0 in (none)
[2015-01-24 23:01:31] snmp plugin: read_objid (IF-MIB::ifDescr) failed.
[2015-01-24 23:01:31] snmp plugin: No such data configured: `ifmib_if_octets32'
No log handling enabled - turning on stderr logging
MIB search path: $HOME/.snmp/mibs:/usr/share/mibs/site:/usr/share/snmp/mibs:/usr/share/mibs/iana:/usr/share/mibs/ietf:/usr/share/mibs/netsnmp
Cannot find module (IF-MIB): At line 0 in (none)
[2015-01-24 23:01:33] snmp plugin: read_objid (IF-MIB::ifDescr) failed.
[2015-01-24 23:01:33] snmp plugin: No such data configured: `ifmib_if_octets32'
. ok

它顯然找不到 MIB，它甚至似乎都沒有查看路由器的 IP。 關於如何正確配置它的任何建議？

Answer 1

我想到了：

<Plugin snmp>
  <Data "if_Octets">
    Type "if_octets"
    Table true
    Values "IF-MIB::ifInOctets" "IF-MIB::ifOutOctets"
  </Data>
  <Host "tp-link">
    Address "192.168.0.1"
    Version 1
    Community "public"
    Collect "if_Octets"
    Interval 60
  </Host>
</Plugin>