example "grafana.ini' oauth keycloak
Example: grafana keycloak
KEYCLOAK_USERNAME=<Keycloak username>
KEYCLOAK_PASSWORD=<Keycloak password>
KEYCLOAK_REALM=<Keycloak realm name>
KEYCLOAK_CLIENT_SECRET=<Keycloak client secret>
curl -s \
-d "client_id=monitor.example.com" \
-d "client_secret=$KEYCLOAK_CLIENT_SECRET" \
-d "username=$KEYCLOAK_USERNAME" \
-d "password=$KEYCLOAK_PASSWORD" \
-d "grant_type=password" \
"https://login.example.com/auth/realms/$KEYCLOAK_REALM/protocol/openid-connect/token" | jq -r '.access_token'