Deploy via a Kubernetes Deployment#
One way to deploy the application would be to have the images for the front-end and back-end microservice containers already created (via CI/CD) and stored in an image repository. You can then create Kubernetes deployments (YAML) and use those to deploy the application. We will do that now.
1. Retrieve the login command#
If you are not logged in via the CLI, access your cluster via the web console, then click on the dropdown arrow next to your name in the top-right and select Copy Login Command.
A new tab will open and select the authentication method you are using.
Click Display Token
Copy the command under where it says "Log in with this token". Then go to your terminal and paste that command and press enter. You will see a similar confirmation message if you successfully logged in.
$ oc login --token=RYhFlXXXXXXXXXXXX --server=https://api.osd4-demo.abc1.p1.openshiftapps.com:6443 Logged into "https://api.osd4-demo.abc1.p1.openshiftapps.com:6443" as "0kashi" using the token provided. You don't have any projects. You can try to create a new project, by running oc new-project <projectname>
2. Create new project#
Create a new project called "ostoy" in your cluster by entering the following command:
oc new-project ostoy
You should receive the following response
$ oc new-project ostoy Now using project "ostoy" on server "https://api.osd4-demo.abc1.p1.openshiftapps.com:6443". You can add applications to this project with the 'new-app' command. For example, try: oc new-app centos/ruby-25-centos7~https://github.com/sclorg/ruby-ex.git to build a new example application in Ruby.
Equivalently you can also create this new project using the web console UI by clicking on "Projects" under "Home" on the left menu, and then click "Create Project" button on the right.
3. Deploy the backend microservice#
The microservice serves internal web requests and returns a JSON object containing the current hostname and a randomly generated color string.
In your terminal deploy the microservice using the following command:
oc apply -f https://raw.githubusercontent.com/openshift-cs/rosaworkshop/master/rosa-workshop/ostoy/yaml/ostoy-microservice-deployment.yaml
You should see the following response:
$ oc apply -f https://raw.githubusercontent.com/openshift-cs/rosaworkshop/master/rosa-workshop/ostoy/yaml/ostoy-microservice-deployment.yaml deployment.apps/ostoy-microservice created service/ostoy-microservice-svc created
4. Deploy the front-end service#
The frontend deployment contains the node.js frontend for our application along with a few other Kubernetes objects.
If you open the ostoy-fe-deployment.yaml you will see we are defining:
- Persistent Volume Claim
- Deployment Object
In your terminal, deploy the frontend along with creating all objects mentioned above by entering:
oc apply -f https://raw.githubusercontent.com/openshift-cs/rosaworkshop/master/rosa-workshop/ostoy/yaml/ostoy-fe-deployment.yaml
You should see all objects created successfully
$ oc apply -f https://raw.githubusercontent.com/openshift-cs/rosaworkshop/master/rosa-workshop/ostoy/yaml/ostoy-fe-deployment.yaml persistentvolumeclaim/ostoy-pvc created deployment.apps/ostoy-frontend created service/ostoy-frontend-svc created route.route.openshift.io/ostoy-route created configmap/ostoy-configmap-env created secret/ostoy-secret-env created configmap/ostoy-configmap-files created secret/ostoy-secret created
5. Get the route#
Get the route so that we can access the application via
oc get route
You should see the following response:
NAME HOST/PORT PATH SERVICES PORT TERMINATION WILDCARD ostoy-route ostoy-route-ostoy.apps.my-rosa-cluster.g14t.p1.openshiftapps.com ostoy-frontend-svc <all> None
6. View the app#
ostoy-route-ostoy.apps.my-rosa-cluster.g14t.p1.openshiftapps.com above and paste it into your browser and press enter. You should see the homepage of our application. If the page does not come up make sure that it is using
http and not