Mimir Ruler API unable to list rules with local storage

[andreimiclea99]

Describe the bug

I using Mimir 2.10.0 and deployed it using the "mimir-distributed-5.0.0" helm chart on k8s. I problem is that i can't see the Grafana mimir rules on Grafna UI nor by using the "mimirtool", the error is body="unable to read rule dir /tmp/rules/anonymous: open /tmp/rules/anonymous: no such file or directory\n"

the command is: ./mimirtool rules list --address=http://url.com --id=anonymous

The rules are inside a Cofigmap in k8s.

To Reproduce

Steps to reproduce the behaviour:

mimir:
  config: |
    multitenancy_enabled: false
    no_auth_tenant: "anonymous"
    ruler:
      alertmanager_url: http://url/alertmanager
      enable_api: true
      
ruler:
  enabled: true
  extraVolumes: 
    - name: config-map-volume
      configMap:
        name: rules-configmap

  extraVolumeMounts:
    - name: config-map-volume
      mountPath: /tmp/rules


  extraArgs:
    ruler-storage.backend: local
    ruler-storage.local.directory: /tmp/rules

Expected behavior

According to https://grafana.com/docs/mimir/latest/references/architecture/components/ruler/#local-storage, was expected for this to work automatically.

Additional Context

I want to add that the rules are seen by the alertmanager and everything is good on that part, but I would like a way to see the rules.

[rknightion]

the line in the docs "Note: Local storage is a read-only backend that does not support the creation and deletion of rules through the [Configuration API]" implies to me that when using local storage the Ruler doesn't respond to API requests (I may be mistaken but I think mimirtool is using the configuration API in the same way that Grafana would).

[andreimiclea99]

@rknightion i saw that, however what i was trying to do is a “GET”.

if the API is completely disabled ( plus unable to to integrate with Grafana Alerting) for local backend then that’s a huge liability which should be stipulated on the docs.

[dimitarvdimitrov]

I am not sure how your configmap looks like, but have you tried mounting the rules under /tmp/rules/anonymous

the line in the docs "Note: Local storage is a read-only backend that does not support the creation and deletion of rules through the [Configuration API]" implies to me that when using local storage the Ruler doesn't respond to API requests (I may be mistaken but I think mimirtool is using the configuration API in the same way that Grafana would).

The list rules API is supported (used by mimirtool rules list), but getting a rule group and any mutating endpoints are not supported. We should be able to add support for getting a rule group, there is no technical reason not to have it. #6632

[andreimiclea99]

@dimitarvdimitrov yes, I have tried two ways.

If I mount under /tmp/rules i am getting unable to read rule dir /tmp/rules/anonymous and if i mount under /tmp/rules/anonymous I am getting unable to read rule dir /tmp/rules/anonymous/anonymous.

[dimitarvdimitrov]

if i mount under /tmp/rules/anonymous I am getting unable to read rule dir /tmp/rules/anonymous/anonymous.

in this case you should keep ruler-storage.local.directory: /tmp/rules

[andreimiclea99]

@dimitarvdimitrov I have it exactly like that,

ruler-storage.backend: local
ruler-storage.local.directory: /tmp/rules

Also mentioned in the description.

So currently there is no API support for the local storage.

[dionisiemoscalu]

Did you find a solution of this?

[andreimiclea99]

No, in the end i moved the rules on cloud buckets

[dionisiemoscalu]

yeah it seams i will do the same .... Did you do in the blocks_storage or ruler_storage ?

[dimitarvdimitrov]

there's #7477 to implement this for local storage