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Implementation Guide for Oracle WebLogic Server
Cloud Native Unica upgrade
To upgrade an earlier version of Cloud Native Unica to a newer version, complete the following steps:
Custom listener scripts and Cloud Native Unica container OS upgrade
Unica container OS upgrade from CentOS 8 to RHEL Universal Base Image (UBI) v8.5 may cause listener pod custom scripts to fail (applies to Cloud Native Unica versions 12.1.2 / 12.1.3).

Implementation Guides
- Implementation Guide for Apache Tomcat
- Implementation Guide for Red Hat JBoss Enterprise Application Platform
- Implementation Guide for Oracle WebLogic Server
  - Cloud Native Unica Overview
  - Docker, Kubernetes, and Helm
    In this release, we have implemented Cloud Native Unica using Docker, Kubernetes, and Helm.
  - ELK Overview
    The ELK Stack is a collection of three open-source products: Elasticsearch, Logstash, and Kibana.
  - Pre-installation configurations
    Before installing or upgrading to Cloud Native Unica, you should complete some configurations.
  - Cloud Native Unica Helm release architecture
    The following is a diagrammatic representation of the Cloud Native Unica Helm release architecture:
  - Helm chart configuration
    Before you start the installation or upgrade of Cloud Native Unica, you should configure the appropriate configMap YAML files.
  - Installation and verifying the installation
  - Post installation configurations
    The following topics contain details about post installation configurations related to the products of Unica.
  - Migration of on-premises applications to Cloud Native Unica
  - Cloud Native Unica upgrade
    To upgrade an earlier version of Cloud Native Unica to a newer version, complete the following steps:
    - Custom listener scripts and Cloud Native Unica container OS upgrade
      Unica container OS upgrade from CentOS 8 to RHEL Universal Base Image (UBI) v8.5 may cause listener pod custom scripts to fail (applies to Cloud Native Unica versions 12.1.2 / 12.1.3).
  - Scaling Unica containers
    Scaling a deployment ensures creation and scheduling of new Pods. Scaling increases the number of Pods to the new required state. Kubernetes also supports autoscaling of Pods.
  - Using Red Hat OpenShift
    You can use OpenShift to develop and runcontainerized applications. OpenShift allows applications, and the data centers that support them, to expand from just a few machines and applications to thousands of machines that serve millions of clients.
  - Deployment monitoring
    The Kubernetes Dashboard is a web-based user interface to monitor deployments.
  - Product utilities
    You can execute all the utilities of the Unica products in their assigned pods.
  - Using secret to avoid passwords in plain text
    To use a secret to avoid using passwords in plain text, complete the following steps:
  - Using AWS Secrets and Configuration Provider with Kubernetes Secret Store CSI Driver
    AWS Secrets Manager securely retrieves secrets from the AWS Secrets Manager for Amazon Elastic Kubernetes Service (Amazon EKS) Kubernetes pods.
  - Enabling Multicast using Weave-Net CNI plugin on AWS EKS cluster
    You can enable multicasting on AWS EKS cluster only for Kubernetes versions 1.21 or above,
  - FAQs and troubleshooting
    This section covers the frequently asked questions and troubleshooting issues.
  - Uninstalling the chart
  - Appendix: Description of Helm chart parameters
    The following topics contain description of the parameters present in the configMap YAML files:

Custom listener scripts and Cloud Native Unica container OS upgrade

Unica container OS upgrade from CentOS 8 to RHEL Universal Base Image (UBI) v8.5 may cause listener pod custom scripts to fail (applies to Cloud Native Unica versions 12.1.2 / 12.1.3).

Procedure

Modify custom scripts as per RHEL UBI OS. Example: Database Client Installation Script on listener pod.
Centos8 OS was updated to RHEL UBI 8.5 because of CentOS 8 end of life.
Also, RHEL UBI containers are less vulnerable to security threats because of the frequent fixing and release cycle.

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