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Configure the Grafana Mimir query-frontend to work with Prometheus

You can use the Grafana Mimir query-frontend with any Prometheus-API compatible service, including Prometheus and Thanos. Use this configuration file to benefit from query parallelization and caching.

yml 
# You can use the Mimir query frontend with any Prometheus-API compatible
# service, including Prometheus and Thanos.  Use this config file to get
# the benefits of query parallelisation and caching.

# Disable the requirement that every request to Mimir has a
# X-Scope-OrgID header. `anonymous` will be substituted in instead.
multitenancy_enabled: false

# We only want to run the query-frontend module.
target: query-frontend

# We don't want the default /api/prom or /prometheus prefixes on endpoints.
api:
  prometheus_http_prefix: ''

server:
  http_listen_port: 9091

frontend:
  split_queries_by_interval: 24h
  align_queries_with_step: true
  cache_results: true

  results_cache:
    backend: "memcached"

    memcached:
      # You can either configure a headless service in Kubernetes and Mimir will discover the individual
      # instances using a SRV DNS query (host) or list comma separated memcached addresses.
      addresses: "dnssrvnoa+memcached.mimir.svc.cluster.local:11211"

  log_queries_longer_than: 1s

  # The Prometheus URL to which the query-frontend should connect to.
  downstream_url: http://prometheus.mydomain.com