Apache webtier

This section provides information about how to install and configure Apache webtier to load balance Oracle WebCenter Content domain clusters. You can configure Apache webtier for non-SSL and SSL termination access of the application URL.

Follow these steps to set up Apache webtier as a load balancer for an Oracle WebCenter Content domain in a Kubernetes cluster:

  1. Build the Apache webtier image
  2. Create the Apache plugin configuration file
  3. Prepare the certificate and private key
  4. Install the Apache webtier Helm chart
  5. Verify domain application URL access
  6. Uninstall Apache webtier

Build the Apache webtier image

Refer to the sample, to build the Apache webtier Docker image.

Create the Apache plugin configuration file

  1. The configuration file named custom_mod_wl_apache.conf should have all the URL routing rules for the Oracle WebCenter Content application deployed in the domain that needs to be accessible externally. Update this file with values based on your environment. The file content is similar to below mentioned sample.
Click here to see the sample content of the configuration file custom_mod_wl_apache.conf for Oracle WebCenter Content domain
  1. Update persistentVolumeClaimName with your PV-claim-name which contains your custom_mod_wl_apache.conf in file kubernetes/samples/charts/apache-samples/custom-sample/input.yaml.

Prepare the certificate and private key

  1. (For the SSL termination configuration only) Run the following commands to generate your own certificate and private key using openssl.

     $ cd ${WORKDIR}/weblogic-kubernetes-operator
     $ cd kubernetes/samples/charts/apache-samples/custom-sample
     $ sh certgen.sh

    NOTE: Replace WEBLOGIC_HOST with the host name on which Apache webtier is to be installed.

    Click here to see the output of the certifcate generation
  2. Prepare input values for the Apache webtier Helm chart.

    Run the following commands to prepare the input value file for the Apache webtier Helm chart.

    $ base64 -i ${SSL_CERT_FILE} | tr -d '\n'
    $ base64 -i ${SSL_CERT_KEY_FILE} | tr -d '\n'
    $ touch input.yaml

    Update virtualHostName with the value of the WEBLOGIC_HOST in file kubernetes/samples/charts/apache-samples/custom-sample/input.yaml

    Click here to see the snapshot of the sample input.yaml file

Install the Apache webtier Helm chart

  1. Install the Apache webtier Helm chart to the domain wccns namespace with the specified input parameters:

    $ cd ${WORKDIR}/weblogic-kubernetes-operator/kubernetes/samples/charts
    $ kubectl create namespace apache-webtier
    $ helm install  apache-webtier --values apache-samples/custom-sample/input.yaml --namespace wccns apache-webtier --set image=oracle/apache:
  2. Check the status of the Apache webtier:

     $ kubectl get all -n wccns | grep apache

    Sample output of the status of the apache webtier:

pod/apache-webtier-new-apache-webtier-65d8d7c59f-k27wf         1/1     Running     0          9d
service/apache-webtier-new-apache-webtier         NodePort    <none>            80:30505/TCP,4433:30453/TCP   9d
deployment.apps/apache-webtier-new-apache-webtier         1/1     1            1           9d
replicaset.apps/apache-webtier-new-apache-webtier-65d8d7c59f         1         1         1       9d

Verify domain application URL access

Post the Apache webtier load balancer is up, verify that the domain applications are accessible through the load balancer port 30505/30453. The application URLs for domain of type wcc are:

Note: Port 30505 is the LOADBALANCER-Non-SSLPORT and Port 30453 is LOADBALANCER-SSLPORT.

Non-SSL configuration
SSL configuration

Uninstall Apache webtier

$ helm delete apache-webtier -n wccns