Documentation feedback: /docs/sources/mimir/manage/run-production-environment/planning-capacity.md

[bjorns163]

I've been looking at your capacity planning documentation, but it not very clear to me how this works.

I've got a few tenants already sending data to my system. And when I add a new tenant I'm trying to see how munch extra resources i'll need.

For the already created tenants, I don't have their number of active series.
Can I fall back to what I see in the /distributor/all_user_stats page? And do I use the ingest rate value or the series value?

Say it was series, it gives me a result

distributor: CPU=61.3Core(s) MEM=61.31GB

But this doesn't take into account how many replica's ill be running, and what would be the recommended limit value for a CPU?
based on the large values file it's set to 2 CPU this would mean I need 31 replica's?

Say it was rate values, it gives me a result of:

distributor: CPU=2.4Core(s) MEM=2.39GB

So two replicas would be enough?

Taking a look at the scaling dashboard
It's telling me I need 7 replicas based on cpu or 11 based on memory.

Currently, I have running 5 replicas.

distributor:
  replicas: 5

  resources:
    limits:
      cpu: 2.5
      memory: 5.7Gi
    requests:
      cpu: 1.2
      memory: 2Gi

Looking at their load, it doesn't seem like I need to scale up:

To summaries my questions.

• What are the recommended requests/limit values per replica. To determine the number of replicas.
• How do I see the current sum(prometheus_tsdb_head_series) across all tenants. Is <mimir_domain>/distributor/all_user_stats a good source.