influxdata/telegraf

run postgres_extensible query across multiple databases

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#3,219 opened on Sep 11, 2017

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Description

Feature Request

Opening a feature request kicks off a discussion.

Proposal:

The postgres_extensible plugin should support a way of running the same query across multiple databases. The configuration should allow running across all discovered databases, or a filtered list.

Current behavior:

No such feature

Desired behavior:

Such a feature

Use case: [Why is this important (helps with prioritizing requests)]

Postgres provides a lot of data though what it calls "system catalogs", which are really tables within each database. Thus to use them you have to connect to that database. Instead of having to know which databases are present, and then having to hard-code those databases in the telegraf config on each server, it would be nice if we could push out the same telegraf config to all servers.

Contributor guide

Research direction
Design a configuration option to specify database names or use discovery, then iterate over databases in the plugin.
Tech stack
gosql
Domain
backenddevops
Issue type
Feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-2 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
GoDatabase concepts
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
60