Add auth to /metrics path

[sadath-12]

Which OpenObserve functionalities are relevant/related to the feature request?

metrics

Description

Add auth to /metrics path so our system information can't be exploited

Proposed solution

Auth in similar way you did for logs

Alternatives considered

Not yet considered

[prabhatsharma]

For now, you can use the following annotation in nginx ingress:

nginx.ingress.kubernetes.io/configuration-snippet: |
        location ~* ^/metrics {
          return 404;
        }

[gaby]

@prabhatsharma That will block access to the endpoint though.