Apache webtier

This section provides information about how to install and configure Apache webtier to load balance Oracle SOA Suite 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 SOA Suite 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 SOA Suite applications 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. This directory location of this configuration file is referred as host-config-dir in input.yaml.

    Click here to see the sample content of the configuration file custom_mod_wl_apache.conf for soa domain
  2. Update volume path with the directory location of the file 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 soans 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 soans apache-webtier --set image=oracle/apache:
  2. Check the status of the Apache webtier:

     $ kubectl get all -n soans | grep apache

    Sample output of the status of the apache webtier:

    pod/apache-webtier-apache-webtier-65f69dc6bc-zg5pj   1/1     Running     0          22h
    service/apache-webtier-apache-webtier   NodePort     <none>        80:30305/TCP,4433:30443/TCP   22h
    deployment.apps/apache-webtier-apache-webtier   1/1     1            1           22h
    replicaset.apps/apache-webtier-apache-webtier-65f69dc6bc   1         1         1       22h

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 30305/30443. The application URLs for domain of type soa are:

Note: Port 30305 is the LOADBALANCER-Non-SSLPORT and Port 30443 is LOADBALANCER-SSLPORT.

Non-SSL configuration
SSL configuration

Uninstall Apache webtier

$ helm delete apache-webtier -n soans