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Prometheus is a monitoring and analytics platform that allows customers to analyze, visualize, automate, and alert on metrics data. You can use Prometheus to drive insights into values such as:

  • SLOs


In order to connect Cortex to your Prometheus instance, you’ll need to add the URL for your Prometheus server and basic authentication if it is configured under Settings → Prometheus. Each Prometheus instance can also optionally include a tenant id to monitor a specific tenant of a multiple tenant setup.

Multi-account support

The Prometheus integration has multi-account support so you can add a configuration for each additional instance by repeating the above process.

Each configuration requires an alias, which Cortex uses to correlate the designated instance with registrations for various entities. Registrations can also use a default configuration without a listed alias.

You can edit aliases and default configurations from the Prometheus page in Settings. Select the edit icon next to a given configuration and toggle "Set as default" on. If you only have one configuration, it will automatically be set as the default.


If you do not see the Settings page you're looking for, you likely don't have the proper permissions and need to contact your admin.

Service Registration

Service Descriptor

You can create and manage SLOs by listing relevant SLIs through queries.

- errorQuery: sum(rate(http_server_requests_seconds_count{status=~"(5..|429)"}[5m]))
totalQuery: sum(rate(http_server_requests_seconds_count[5m]))
slo: 99.95
alias: my-prometheus-instance # alias is optional and only relevant if you have opted into multi account support
name: my-slo-name
errorQueryQuery that indicates error events for your metric.
totalQueryQuery that indicates all events to be considered for your metric.
sloTarget number for SLO.
aliasTies the SLO registration to a Prometheus instance listed under Settings → Prometheus. The alias parameter is optional, but if not provided the SLO will use the default configuration under Settings → Prometheus.
nameThe SLO's name in Prometheus. The name parameter is optional.