This blog entry is the third and last part of the series „Create APEX in AWS“. Here I describe the installation and configuration of Apache Tomcat and the deployment of the ORDS application in Tomcat. Later I will explain the installation of the Webserver Nginx and configure it to access APEX via Apache Tomcat and ORDS.
Information about the installation of the APEX application in AWS can be found here. The installation and configuration of Oracle Data rest service is described here.
In this post, I will explain the configuration of Middleware components needed to present apex content in web. We will build the separate VM (EC2 Container) in AWS and configure following components: ORDS, Apache Tomcat und Nginx Server.
Installing and Configuring the VM for the APEX Listener
About three months ago I found a script named host_access_control.
The script provides the API to managing several host access and security settings. The script is available on Compute Nodes and Storage Cells since the Exadata Software Version 220.127.116.11.0. The utility is located in /opt/oracle.cellos/host_access_control. The script is not documented in the Exadata Documentation, but in the Super Cluster documentation.
The script called with the Option „-h“ displays the help:
The high availability of applications in the WebLogic environment is realized by clustering. Managed servers in the cluster work together. The information about transactions is distributed cluster-wide. If a cluster member fails, another server takes over the tasks of the failed server and executes them. In this way, the applications are kept running without interruption.
The AdminServer is a single point of failure: if the server fails, the Domain is no longer administrable:
– Configuration changes cannot be performed
– The administration console is not available
The managed servers are still running and can continue to work, even if the AdminServer is not available: this requires the activation of MSI (Managed Server Independence) Mode.
How can the AdminSevrer be protected from failure? In this blogpost I will describe all the steps that are necessary to keep your server running safely.