Add filebacked metastore default config in values.yaml

[fmassot]

No description provided.

[imotov]

I was about to open an issue for that 😄 I can take a look at this as a follow up for quickwit-oss/quickwit#3164.

[fmassot]

That would be great. The PR #43 tries to solve the issue by defining the metastore_uri but... adding a metastore uri is bit confusing when you define a postgres config. We probably want some validation too (#44).

This is what I have in mind:

config:
  metastore:
    # Define the URI.
    uri: s3://bucket/indexes 
    # uri: postgres://username:password@host:port/database 
    # You  can also define a postgres metastore like this
    # postgres:
    #   host: ""
    #   port: 5432
    #   database: metastore
    #   username: quickwit
    #   password: ""

Honestly, I would prefer removing the postgres and keep only a metastore_uri variable, @clemcvlcs any thoughts on this?

[fmassot]

@imotov I just added a metastore_uri. I need to add some validation to avoid a user setting both metastore_uri and postgres.