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JWS Playbook

This repository contains the ansible playbook to setup JWS.

Roles

There are two roles in this playbook:

  • The tomcat role which:
    • Installs JAVA
    • Installs basic packages required
    • Adds tomcat user and group
    • Downloads tomcat and install
    • Makes sure that tomcat belongs to the tomcat user and group
    • Deploys server.xml, web.xml and context.xml

How to use this playbook

The use of the playbook will vary on the installation method you choose. There is currently three options:

  • local zipfile
  • rpm
  • using your RHN credentials to retrieve the JWS zipfiles provided by Red Hat.

Prerequisite

You can the playbook directly from this folder for demostration purpose, however, the proper way to install the collection is to build it and install it :

$ ansible-galaxy collection build .
$ ansible-galaxy collection install middleware_automation-jws-0.0.1.tar.gz

Using local zipfiles

Download the requires zipfiles from your Red Hat account:

  • Red Hat JBoss Web Server 5.4.0 Application Server (the server itself)
  • Red Hat JBoss Web Server 5.4.0 Application Server for RHEL 8 x86_64 (the native bits)

Provides the path to those zipfiles:

vars:
  ...
  tomcat_zipfile: jws-5.4.0-application-server.zip
  native_zipfile: jws-5.4.0-application-server-RHEL8-x86_64.zip

Note that if you respect the naming convention above for the file name, you can just provide the JWS version instead of those two paths:

vars:
  ...
  jws_version: 5.4.0

Using RPM

Change the default install method to RPM and provide the appropriate Tomcat HOME in the playbooks:

vars:
  ...
  tomcat_home: /opt/rh/jws5/root/usr/share/tomcat/
  tomcat_install_method: rpm

Using RHN

To use the install method RHN zipfiles, simply set the method :

vars:
   ...
   tomcat_install_method: rhn_zipfiles

And provide your RHN credentials (as argument or in file):

rhn_username: [email protected]
rhn_password: eatme

Running the play books

  1. Configure the install method as described above!

  2. Update your inventory, e.g.:

        [tomcat]
    192.168.0.1      # Remote user to act on

  3. Update variables in playbook file, the variables are as follow:

    • jws_version (which version of jws to install)
    • tomcat_install_java (where to install java)
    • tomcat_java_version (which version of java to install)
    • tomcat.listen.http.port and tomcat.listen.https.port (which http/https ports to listen on)
    • tomcat.listen.ajp (Where to use ajp and if yes configure the address, port, where to use a secret etc.)

Note: If you are using a non root remote user, then set username and enable sudo: become: yes become_method: sudo

Mod Cluster Listener

What does the mod cluster listener do:

Allows communication between Apache Tomcat and the Apache HTTP Server’s mod_proxy_cluster module. This allows the Apache HTTP Server to be used as a load balancer for JBoss Web Server. For information on the configuration of mod_cluster, or for information on the installation and configuration of the alternative load balancers mod_jk and mod_proxy, see the HTTP Connectors and Load Balancing Guide.

How to enable mod cluster listener:

All that you have to do to enable a mod_cluster listener for jws is to edit the mod_cluster variables in the playbook:

  • mod_cluster.enable (Set to True to enable the listener)
  • mod_cluster.ip (Set the ip of the mod_cluster instance)
  • mod_cluster.port (Set the port of the mod_cluster instance)

Running Playbook

Once all values are updated, you can then run the playbook against your nodes.

Playbook executed as root user - with ssh key:

$ ansible-playbook -i hosts playbook.yml

Playbook executed as root user - with password:

$ ansible-playbook -i hosts playbook.yml --ask-pass

Playbook executed as sudo user - with password:

$ ansible-playbook -i hosts playbook.yml --ask-pass --ask-become-pass

Playbook executed as sudo user - with ssh key and sudo password:

$ ansible-playbook -i hosts playbook.yml --ask-become-pass

Playbook executed as sudo user - with ssh key and passwordless sudo:

$ ansible-playbook -i hosts playbook.yml --ask-become-pass

Execution should be successful without errors