[mongodb] Cannot get metrics from arbiter - failed to gather data: NotMasterOrSecondary (oplog stats)

[alx75]

Relevant telegraf.conf:

[[inputs.mongodb]]
  servers = ["mongodb://localhost:27017/?connect=direct"]
  gather_perdb_stats = true

System info:

OS : 4.9.0-16-amd64 #1 SMP Debian 4.9.272-2 (2021-07-19) x86_64 GNU/Linux
Telegraf version : Telegraf 1.19.3 (git: HEAD a799489)

Steps to reproduce:

start telegraf

Expected behavior:

Telegraf must gather metrics from mongo

Actual behavior:

Telegraf fails to get metrics from mongo

Additional info:

Logs:
E! [inputs.mongodb] Unable to get oplog stats: mongo: no documents in result
E! [inputs.mongodb] failed to gather data: "(NotMasterOrSecondary) node is not in primary or recovering state"

[denispershin]

Hi! If you want to run telegraf on arbiter, you have to comment or delete gather_perdb_stats = true. Arbiter does not have any information about collection or db.

[alx75]

Great thanks it worked.

I do not see any option to get rid of the oplog stat that generates a lot of logs though. Any ideas ?

[denispershin]

For current implementation it is impossible, telegraf gather "replSetGetStatus" and "oplog.rs" by default. But you can disable log file in config.