Missing metrics from serverstatus.wiredTiger.cache in mongodb input plugin

[phenomenes]

Feature Request

Add missing serverstatus.wiredTiger.cache metrics to mongodb input plugin.

Current behavior:

The mongodb input plugin only provides two metrics:

• tracked dirty bytes in the cache
• bytes currently in the cache

and they are not even raw metrics but percentages. The current plugin is not designed in such a way that can be easily extended to add the rest of the metrics (71 in total).

Desired behavior:

I would like to have raw metrics of the 71 fields in serverStatus.wiredTiger.cache.

Use case

For example, we would be able to have an overview of the IO activity, as expressed here:
https://docs.mongodb.com/manual/reference/command/serverStatus/#serverstatus.wiredTiger.cache

[danielnelson]

Added in #3281

[Veeresh-dot-Pattar]

Hi I am also not able to get wiredTiger info from db.serverStatus() and also some other metrics are missing . My mongo version 4.4.4 . and I am connecting to mongodb atlas. Please suggest if you have solution for this.