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记一次snmp_exporter/generator生成yml报错问题修复

news 来源：原创 2025/6/28 1:03:24

环境说明：

Ubuntu+snmp_exporter（版本0.28.0）中go build生成的generator程序，期望生成奇安信的yml文件给snmp exporter使用

sudo apt install snmp-mibs-downloader

sudo download-mibs

问题现象：

生成报错：

root@server:~/snmp_exporter/generator# ./generator generate -m ./mibs2 -g source3.yml -o QiAnXin.yml --no-fail-on-parse-errors
time=2025-03-29T19:17:45.895Z level=INFO source=net_snmp.go:174 msg="Loading MIBs" from=./mibs2
time=2025-03-29T19:17:45.897Z level=WARN source=main.go:179 msg="NetSNMP reported parse error(s)" errors=427
time=2025-03-29T19:17:45.897Z level=ERROR source=main.go:185 msg="Missing MIB" mib=SNMPv2-SMI from="At line 20 in ./mibs2/QiAnXinNSG.mib"
time=2025-03-29T19:17:45.897Z level=ERROR source=main.go:185 msg="Missing MIB" mib=SNMPv2-TC from="At line 25 in ./mibs2/QiAnXinNSG.mib"
time=2025-03-29T19:17:45.897Z level=INFO source=main.go:57 msg="Generating config for module" module=Qianxin_firewall
time=2025-03-29T19:17:45.897Z level=ERROR source=main.go:141 msg="Error generating config netsnmp" err="cannot find oid '1.3.6.1.4.1.32328.6.1.4' to walk"

分析：

报错内容msg="Missing MIB" mib=SNMPv2-SMI from="At line 20 in ./mibs2/QiAnXinNSG.mib"，分析为QiAnXinNSG.mib文件引用了“SNMPv2-SMI”文件，但是缺失了
报错内容msg="Missing MIB" mib=SNMPv2-TC from="At line 25 in ./mibs2/QiAnXinNSG.mib"，分析为QiAnXinNSG.mib文件引用了“SNMPv2-TC”文件，但是缺失了

处理方案：

root@server:~/snmp_exporter/generator# find / -name SNMPv2* 【查找出所需文件的路径】
root@server:~/snmp_exporter/generator# cp /var/lib/mibs/ietf/SNMPv2-TC mibs2
root@server:~/snmp_exporter/generator# cp /var/lib/mibs/ietf/SNMPv2-SMI mibs2

修复后效果：重新生成

root@server:~/snmp_exporter/generator# ./generator generate -m ./mibs2 -g source3.yml -o QiAnXin.yml --no-fail-on-parse-errors
time=2025-03-29T19:18:23.857Z level=INFO source=net_snmp.go:174 msg="Loading MIBs" from=./mibs2
time=2025-03-29T19:18:23.860Z level=INFO source=main.go:57 msg="Generating config for module" module=Qianxin_firewall
time=2025-03-29T19:18:23.860Z level=INFO source=main.go:75 msg="Generated metrics" module=Qianxin_firewall metrics=2
time=2025-03-29T19:18:23.861Z level=INFO source=main.go:100 msg="Config written" file=/root/snmp_exporter/generator/QiAnXin.yml

最终生成效果如下：
root@server:~/snmp_exporter/generator# cat QiAnXin.yml
# WARNING: This file was auto-generated using snmp_exporter generator, manual changes will be lost.
auths:
  public_v2:
    community: publicNSGSNMPComm
    security_level: noAuthNoPriv
    auth_protocol: MD5
    priv_protocol: DES
    version: 2
modules:
  Qianxin_firewall:
    get:
    - 1.3.6.1.4.1.32328.6.1.4.0
    - 1.3.6.1.4.1.32328.6.1.7.0
    metrics:
    - name: deviceSerial
      oid: 1.3.6.1.4.1.32328.6.1.4
      type: DisplayString
      help: The serial of device - 1.3.6.1.4.1.32328.6.1.4
    - name: softwareVersion
      oid: 1.3.6.1.4.1.32328.6.1.7
      type: DisplayString
      help: The software version of device - 1.3.6.1.4.1.32328.6.1.7