CHAPTER 2. APPLICATION LIFE CYCLE MANAGEMENT A DB instance is now deployed in the  Topology  view. 4. In the  Topology  view, hover over the Node.js component to see a dangling arrow on the node. 5. Click and drag the arrow towards the  db-demo-postgresql  service to make a binding connection with the Node.js application. A service binding request is created and the  Service Binding Operator  controller injects the DB connection information into the application deployment as environment variables. After the request is successful, the application is redeployed and the connection is established. Figure 2.5. Binding connector 2.4.7. Labels and annotations used for the Topology view Icon displayed in the node Link to the source code editor or the source Node Connector App grouping 2.5. EDITING APPLICATIONS The  Topology  view uses the following labels and annotations: Icons in the node are defined by looking for matching icons using the  app.openshift.io/runtime  label, followed by the  app.kubernetes.io/name  label. This matching is done using a predefined set of icons. The  app.openshift.io/vcs-uri  annotation is used to create links to the source code editor. The  app.openshift.io/connects-to  annotation is used to connect the nodes. The  app.kubernetes.io/part-of=<appname>  label is used to group the applications, services, and components. For detailed information on the labels and annotations OpenShift Container Platform applications must use, see  Guidelines for labels and annotations for OpenShift applications . 37  image: docker.io/postgres  imageName: postgres  dbName: db-demo