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Trigger Specification
This specification describes the solr trigger that scales based on the outputs of a Solr query.
triggers:
- type: solr
metadata:
host: "http://solr-service.solr-ns.svc.cluster.local:8983"
query: "*:*"
collection: "my_core"
targetQueryValue: "1"
activationTargetQueryValue : "3"
Parameter list:
host- The hostname for connecting to the Solr service.query- A Solr query that should return single numeric value. (Default:*:*, Optional)collection- Your collection name on Solr.targetQueryValue- A threshold that is used as targetValue or targetAverageValue (depending on the trigger metric type) in HPA. (This value can be a float)activationTargetQueryValue- Target value for activating the scaler. Learn more about activation here. (Default:0, Optional)
Authentication Parameters
You can authenticate by using a password via TriggerAuthentication configuration.
Credential based authentication:
username- Username for configured user to login to the Solr instance.password- Password for configured user to login to the Solr instance.
Example
apiVersion: v1
kind: Secret
metadata:
name: solr-secret
type: Opaque
data:
solr_username: SOLR_USERNAME
solr_password: SOLR_PASSWORD
---
apiVersion: keda.sh/v1alpha1
kind: TriggerAuthentication
metadata:
name: trigger-auth-solr
spec:
secretTargetRef:
- parameter: username
name: solr-secret
key: solr_username
- parameter: password
name: solr-secret
key: solr_password
---
apiVersion: keda.sh/v1alpha1
kind: ScaledObject
metadata:
name: solr-scaledobject
spec:
scaleTargetRef:
name: nginx-deploy
triggers:
- type: solr
metadata:
host: "http://solr-service.solr-ns.svc.cluster.local:8983"
query: "*:*"
collection: "my_core"
targetQueryValue: "1"
authenticationRef:
name: trigger-auth-solr