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PASOE

1 Introduction

Progress Application Server for OpenEdge (PASOE), built upon the industry standard Apache Tomcat web server, delivers an efficient, highly scalable, and secure application server. This innovative application server allows organizations to modernize experiences and limit security vulnerabilities.

The LoadMaster delivers an exceptional, cost effective, and easy to use solution which, by employing intelligent server health checking, optimized performance, security and automatic failover can support an always-on application experience for PASOE.

1.1 Document Purpose

This document provides the recommended LoadMaster settings used when providing high availability, optimization and security for PASOE. The Kemp Support team is available to provide solutions for scenarios not explicitly defined. The Kemp Support site can be found at: https://support.kemptechnologies.com.

1.2 Intended Audience

This document is intended to be read by anyone who is interested in configuring the LoadMaster to optimize Progress Application Server for OpenEdge (PASOE).

2 Template

Kemp has developed a template containing our recommended settings for this workload. You can install this template to help create Virtual Services (VSs) because it automatically populates the settings. You can use the template to easily create the required VSs with the recommended settings. For some workloads, additional manual steps may be required such as assigning a certificate or applying port following. These steps are covered in the document, if needed.

You can remove templates after use and this will not affect deployed services. If needed, you can make changes to any of the VS settings after using the template.

Download released templates from the following page: LoadMaster Templates.

For more information and steps on how to import and use templates, refer to the Virtual Services and Templates, Feature Description on the Kemp Documentation page.

3 Architecture

PASOE deployments consist of 2 or more servers running the PASOE and a back-end database server (set up with High Availability recommended).

Architecture.png

4 Configure the LoadMaster

Refer to the sections below for details on some recommended global settings.

4.1 Enable Subnet Originating Requests Globally

It is best practice to enable the Subnet Originating Requests option globally.

In a one-armed setup (where the Virtual Service and Real Servers are on the same network/subnet) Subnet Originating Requests is usually not needed. However, enabling Subnet Originating Requests should not affect the routing in a one-armed setup.

In a two-armed setup where the Virtual Service is on network/subnet A, for example, and the Real Servers are on network B, Subnet Originating Requests should be enabled on LoadMasters with firmware version 7.1-16 and above.

Enable Subnet Originating Requests Globally v.2.png

When Subnet Originating Requests is enabled, the Real Server sees traffic originating from 10.20.20.21 (LoadMaster eth1 address) and responds correctly in most scenarios.

With Subnet Originating Requests disabled, the Real Server sees traffic originating from 10.0.0.15 (LoadMaster Virtual Service address on eth0) and responds to eth0 which could cause asymmetric routing.

When Subnet Originating Requests is enabled globally, it is automatically enabled on all Virtual Services. If the Subnet Originating Requests option is disabled globally, you can choose whether to enable Subnet Originating Requests on a per-Virtual Service basis.

To enable Subnet Originating Requests globally, follow the steps below:

1. In the main menu of the LoadMaster User Interface (UI), go to System Configuration > Miscellaneous Options > Network Options.

2. Select the Subnet Originating Requests check box.

5 Virtual Services

This step-by-step setup of Virtual Services (VSs) leverages the Kemp application template for Progress Application Server for OpenEdge (PASOE).

Progress Application Server for OpenEdge (PASOE) can be published with different configuration options dependent on the customer requirements. In many cases if anonymous access or basic authentication is used for PASOE, using Source IP Persistence is supported. However, if Forms Based Authentication is leveraged for PASOE, Active Cookie Persistence is recommended.

The PASOE template is using HTTP/HTTPS health checking along with the default PASOE default TCP port numbers. If enabled on the PASOE environment, OpenEdge Ping can be leveraged to provide more advanced health checking. This advanced health checking will be determined on how OpenEdge Ping is configured within PASOE environment.

The table in each section outlines the settings configured by the application template. You can use this information to manually configure Virtual Services or use the Kemp LoadMaster Application Programming Interface (API) and automation tools.

This document assumes an SSL/TLS certificate has already been installed on the LoadMaster. For more information on adding SSL/TLS Certificates reference the SSL Accelerated Services, Feature Description.

5.1 Create the PASOE HTTP Virtual Service

The following are the steps involved and the recommended settings to configure the PASOE HTTP Virtual Service.

  1. In the main menu of the LoadMaster User Interface (UI), go to Virtual Services > Add New.

    Create PASOE VS.PNG

  2. Type a valid Virtual Address.

  3. Select the PASOE-HTTP-Source_IP or PASOE-HTTP-JSESSIONID_Cookie template in the Use Template drop-down list depending on what persistence method is required. (Refer to the note in the Virtual Services section for recommendations about the persistence method.)

  4. Click Add this Virtual Service.

  5. Expand the Real Servers section.

  6. Click Add New.

  7. Type the Real Server Address.

  8. Click Add This Real Server.

  9. Repeat these steps to add more Real Servers as needed.

5.1.1 PASOE HTTP Source IP Virtual Service Recommended API Settings (optional)

This table outlines the API parameters and values set using the Kemp application template. You can use these settings with scripts and automation tools.

API Parameter

API Value

port

8810

prot

tcp

VStype

http

SubnetOriginating

1
Forcel7 1
Schedule lc
Persist src
PersistTimeOut 360
CheckType http
CheckUseGet 1
CheckPort 8810

5.1.2 PASOE HTTP JSESSIONID Cookie Virtual Service Recommended API Settings (optional)

This table outlines the API parameters and values set using the Kemp application template. You can use these settings with scripts and automation tools.

API Parameter

API Value

port

8810

prot

tcp

VStype

http

SubnetOriginating

1
Forcel7 1
Schedule lc
Persist server-cookie
PersistTimeOut 360
Cookie JSESSIONID
CheckType http
CheckUseGet 1
CheckPort 8810

5.2 Create the PASOE HTTPS Offloaded Virtual Service

The following are the steps involved and the recommended settings to configure the PASOE HTTPS Offloaded Virtual Service.

  1. In the main menu of the LoadMaster User Interface (UI), go to Virtual Services > Add New.

    PASOE_2.png

  2. Type a valid Virtual Address.

  3. Select the PASOE-HTTPS-Offloaded-Source_IP or PASOE-HTTP-Offloaded-JSESSIONID_Cookie template in the Use Template drop-down list depending on what persistence method is required. (Refer to the note in the Virtual Services section for recommendations about the persistence method.)

  4. Click Add this Virtual Service.

  5. Expand the SSL Properties section.

  6. Select the certificate to use from Available Certificates and click the arrow (>) to move it to Assigned Certificates.

  7. Expand the Real Servers section.

  8. Click Add New.

  9. Type the Real Server Address.

  10. Click Add This Real Server.

  11. Repeat these steps to add more Real Servers as needed.

5.2.1 PASOE HTTPS Offloaded Source IP Virtual Service Recommended API Settings (optional)

This table outlines the API parameters and values set using the Kemp application template. You can use these settings with scripts and automation tools.

API Parameter

API Value

port

8811

prot

tcp

VStype

http

SubnetOriginating

1
Forcel7 1
Schedule lc
Persist src
PersistTimeOut 360
SSLAcceleration 1
TLSType 1
CipherSet BestPractices
CheckType http
CheckUseGet 1
CheckPort 8810

5.2.2 PASOE HTTPS Offloaded JSESSIONID Cookie Virtual Service Recommended API Settings (optional)

This table outlines the API parameters and values set using the Kemp application template. You can use these settings with scripts and automation tools.

API Parameter

API Value

port

8811

prot

tcp

VStype

http

SubnetOriginating

1
Forcel7 1
Schedule lc
Persist server-cookie
PersistTimeOut 360
Cookie JSESSIONID
SSLAcceleration 1
TLSType 1
CipherSet BestPractices
CheckType http
CheckUseGet 1
CheckPort 8810

5.3 Create the PASOE HTTPS ReEncrypt Virtual Service

The following are the steps involved and the recommended settings to configure the PASOE HTTPS ReEncrypt Virtual Service.

  1. In the main menu of the LoadMaster User Interface (UI), go to Virtual Services > Add New.

    PASOE_3.png

  2. Type a valid Virtual Address.

  3. Select the PASOE-HTTPS-ReEncrypt-Source_IP or PASOE-HTTP- ReEncrypt -JSESSIONID_Cookie template in the Use Template drop-down list depending on what persistence method is required. (Refer to the note in the Virtual Services section for recommendations about the persistence method.)

  4. Click Add this Virtual Service.

  5. Expand the SSL Properties section.

  6. Select the certificate to use from Available Certificates and click the arrow (>) to move it to Assigned Certificates.

  7. Expand the Real Servers section.

  8. Click Add New.

  9. Type the Real Server Address.

  10. Click Add This Real Server.

  11. Repeat these steps to add more Real Servers as needed.

5.3.1 PASOE HTTPS ReEncrypt Source IP Virtual Service Recommended API Settings (optional)

This table outlines the API parameters and values set using the Kemp application template. You can use these settings with scripts and automation tools.

API Parameter

API Value

port

8811

prot

tcp

VStype

http

SubnetOriginating

1
Forcel7 1
Schedule lc
Persist src
PersistTimeOut 360
SSLAcceleration 1
SSLReencrypt 1
TLSType 1
CipherSet BestPractices
CheckType http
CheckUseGet 1
CheckPort 8811

5.3.2 PASOE HTTPS ReEncrypt JSESSIONID Cookie Virtual Service Recommended API Settings (optional)

This table outlines the API parameters and values set using the Kemp application template. You can use these settings with scripts and automation tools.

API Parameter

API Value

port

8811

prot

tcp

VStype

http

SubnetOriginating

1
Forcel7 1
Schedule lc
Persist server-cookie
PersistTimeOut 360
Cookie JSESSIONID
SSLAcceleration 1
SSLReencrypt 1
TLSType 1
CipherSet BestPractices
CheckType http
CheckUseGet 1
CheckPort 8811

Last Updated Date

This document was last updated on 26 May 2022.


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