sli

The sli.yaml file contains definitions of the Service-Level Indicators (SLIs) defined for your Keptn installation. Each SLI is a defined quantitative measure of some aspects of the service level. The query for an SLI is provider/tool-dependent; therefore, each SLI-provider relies on a specific SLI configuration. The SLI configuration contains a list of indicators, each of which always consists of a name and the provider-specific query.

Service-Level Indicator

• Each SLI is a key-value pair with the SLI name as key and the provider-specific query as value.
• The sli.yaml file can contain any number of SLIs.

Provider-specific SLIs

Please follow the links to the provider-specific SLIs:

• Dynatrace

• Prometheus

Add SLI configuration to a Service, Stage, or Project

Important: In the following commands, the value of the resourceUri must specify the SLI-provider that can fetch the declared SLIs. For Dynatrace, the value of the resourceUri must be: dynatrace/sli.yaml.

• To add an SLI configuration to a service, use the keptn add-resource command:

  keptn add-resource --project=sockshop --stage=staging --service=carts --resource=sli-config.yaml  --resourceUri=dynatrace/sli.yaml
  

• To add an SLI configuration to a stage, use the keptn add-resource command:

  keptn add-resource --project=sockshop --stage=staging --resource=sli-config.yaml --resourceUri=dynatrace/sli.yaml
  

  Note: This SLI configuration is applied for all services in this stage.

• To add an SLI configuration to a project, use the keptn add-resource command:

  keptn add-resource --project=sockshop --resource=sli-config.yaml --resourceUri=dynatrace/sli.yaml
  

  Note: This SLI configuration is applied for all services in all stages of this project.

Example of multiple SLI configurations:

• Let’s assume, we add the following SLI configurations to a project, stage, and service:

  • SLI configuration on project-level:

  spec_version: "1.0"
  indicators:
    throughput: "query A-1"
    error_rate: "query B-1"
    response_time_p95: "query C-1"
  

  • SLI configuration on stage-level:

  spec_version: "1.0"
  indicators:
    response_time_p95: "query C-2"
    response_time_p99: "query D-2"
  

  • SLI configuration on service-level:

  spec_version: "1.0"
  indicators:
    response_time_p99: "query D-3"
    sql-statements: "query E-3"
  

• If an evaluation of a service gets triggered, the following SLI configuration is used:

  spec_version: "1.0"
  indicators:
    throughput: "query A-1"         # SLI from project level
    error_rate: "query B-1"         # SLI from project-level
    response_time_p95: "query C-2"  # SLI from stage-level overrides SLI from project-level
    response_time_p99: "query D-3"  # SLI from service-level overrides SLI from stage-level
    sql-statements: "query E-3"     # SLI from service-level
  

See also

• slo

• Dynatrace

• Prometheus

• Quality Gates