SLI-Provider

Setup Dynatrace SLI-provider

During the evaluation of a quality gate, the Dynatrace SLI-provider is required that is implemented by an internal Keptn service, the dynatrace-sli-service. This service will fetch the values for the SLIs that are referenced in an SLO configuration.

Specify the version of the dynatrace-sli-service you want to deploy. Please see the compatibility matrix of the dynatrace-service to pick the version that works with your Keptn.
```
VERSION=<VERSION>    # e.g.: VERSION=0.6.0
```

To install the dynatrace-sli-service, execute:

kubectl apply -f https://raw.githubusercontent.com/keptn-contrib/dynatrace-sli-service/0.5.1/deploy/service.yaml -n keptn

The dynatrace-sli-service needs access to a Dynatrace tenant. If you have completed the steps from Setup Dynatrace, the dynatrace-sli-service uses the already provided credentials. Otherwise, create a secret containing the Tenant ID and API token.

The DT_TENANT has to be set according to the appropriate pattern:
- Dynatrace SaaS tenant: {your-environment-id}.live.dynatrace.com
- Dynatrace-managed tenant: {your-domain}/e/{your-environment-id}
```
kubectl -n keptn create secret generic dynatrace --from-literal="DT_API_TOKEN=<DT_API_TOKEN>" --from-literal="DT_TENANT=<DT_TENANT>"
```

Configure custom Dynatrace SLIs

To tell the dynatrace-sli-service how to acquire the values of an SLI, the correct query needs to be configured. This is done by adding an SLI configuration to a project, stage, or service using the add-resource command. The resource identifier must be dynatrace/sli.yaml.

In the below example, the SLI configuration as specified in the sli-config-dynatrace.yaml file is added to the service carts in stage hardening from project sockshop.

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

Note: The add-resource command can be used to store a configuration on project-, stage-, or service-level. If you store SLI configurations on different levels, see Add SLI configuration to a Service, Stage, or Project to learn which configuration overrides the others based on an example.

Example for custom SLIs:

If you want to add your custom SLIs, take a look at the following example, which can be used as a template for your SLIs:

---
spec_version: '1.0'
indicators:
  throughput: "builtin:service.requestCount.total:merge(0):count?scope=tag(keptn_project:$PROJECT),tag(keptn_stage:$STAGE),tag(keptn_service:$SERVICE),tag(keptn_deployment:$DEPLOYMENT)"
  error_rate: "builtin:service.errors.total.count:merge(0):avg?scope=tag(keptn_project:$PROJECT),tag(keptn_stage:$STAGE),tag(keptn_service:$SERVICE),tag(keptn_deployment:$DEPLOYMENT)"
  response_time_p50: "builtin:service.response.time:merge(0):percentile(50)?scope=tag(keptn_project:$PROJECT),tag(keptn_stage:$STAGE),tag(keptn_service:$SERVICE),tag(keptn_deployment:$DEPLOYMENT)"
  response_time_p90: "builtin:service.response.time:merge(0):percentile(90)?scope=tag(keptn_project:$PROJECT),tag(keptn_stage:$STAGE),tag(keptn_service:$SERVICE),tag(keptn_deployment:$DEPLOYMENT)"
  response_time_p95: "builtin:service.response.time:merge(0):percentile(95)?scope=tag(keptn_project:$PROJECT),tag(keptn_stage:$STAGE),tag(keptn_service:$SERVICE),tag(keptn_deployment:$DEPLOYMENT)"