Synology targets down snmp_exporter

[davidepellegrini]

Host operating system: uname -a

Linux "hostname" 3.10.0-1062.1.1.el7.x86_64 #1 SMP Fri Sep 13 22:55:44 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux

snmp_exporter version: output of snmp_exporter -version

What device/snmpwalk OID are you using?

Synology MIB

If this is a new device, please link to the MIB(s).

It's not a new device, i already monitoring this synologys before.
https://global.download.synology.com/download/Document/Software/DeveloperGuide/Firmware/DSM/All/enu/Synology_MIB_File.zip

What did you do that produced an error?

I don't change settings, and i have this issue, this is my prometheus config file about synology:

• job_name: 'snmp-exporter-synology'
  honor_timestamps: true
  scrape_interval: 10m
  scrape_timeout: 60s
  static_configs:
  • targets: # SNMP devices
    • 10.1.1.5
    • 10.1.1.20
    • 10.4.0.2
      #- 10.0.1.4
      #- 10.0.1.3
      #- 10.0.1.5
      metrics_path: /snmp
      params:
      module: [synology]
      relabel_configs:
  • source_labels: [address]
    target_label: __param_target
  • source_labels: [__param_target]
    target_label: instance
  • target_label: address
    replacement: 10.0.1.241:9116 # The SNMP exporter's real hostname:port.

What did you expect to see?

My targets up and alerts on, like it was a few months ago

What did you see instead?

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[cdalvaro]

@davidepellegrini, did you figure out how to solve this issue?

[cdalvaro]

I managed to fix this issue by setting network_mode: host on my docker-compose file for the snmp-exporter service.

[davidepellegrini]

@cdalvaro I have fixed this issue by change the scrape interval from 60 seconds to 120 seconds. I will try your suggestion too, thanks for your reply.