Ansible Roles and Installation of Weblogic 12C using Ansbile roles

What is Ansible roles ?

1. Ansible roles are consists of many playbooks, which is similar to modules in puppet and

cook books in chef. We term the same in ansible as roles.

2. Roles are a way to group multiple tasks together into one container to do the automation

in very effective manner with clean directory structures.

3. Roles are set of tasks and additional files for a certain role which allow you to break up the configurations.

4. It can be easily reuse the codes by anyone if the role is suitable to someone.

5. It can be easily modify and will reduce the syntax errors.

Directory structure for a role:

tasks - contains the main list of tasks to be executed by the role.

handlers - contains handlers, which may be used by this role or even anywhere outside this role.

defaults - default variables for the role.

vars - other variables for the role. Vars has the higher priority than defaults.

files - contains files required to transfer or deployed to the target machines via this role.

templates - contains templates which can be deployed via this role.

meta - defines some data / information about this role (author, dependency, versions, examples, etc,.)

Ansible Lab:

In this tutorial we will discuss weblogic 12c installation and configuration using Ansible roles.

Clone the project repo to your Ansible control machine.

git clone https://github.com/stardomsolutions/ansible-weblogic12c.git

Follow below steps before running the playbook.

1) Download jdk-8u66-linux-x64.tar.gz and place it in roles/linux-jdk/files/

2) Download fmw_12.2.1.2.0_infrastructure.jar and place it in roles/fmw-software/files/

3) Update infra-vars.yml and secrets.yml files as per your requirement in project root folder.

4) Update the hosts file as per your target environment.

Finally run the below command to install weblogic 12c on target machine. remote username should have sudo access to install required packages and softwares.

ansible-playbook weblogic-fmw-domain.yml -k -k -u <remote_username>

Code Explanation:

weblogic-fmw-domain.yml is the main playbook from which we will invoke different ansible roles to install weblogic 12c.

infra-vars.yml, wls-vars.yml, secrets.yml are the user defined variables in which we can pass user inputs.

linux-wls : to install and configure all OS Prerequisites to install weblogic 12c like

      Installing required packages

     Changing firewald configurations.

   Creating users and groups

     Creating directory structure

linux-jdk : to install JDK

fmw-software : to install weblogic 12c

fmw-domain : to create domain

node-manager : to configure nodemanager

start-admin-server : to start admin server

fmw-managed-server : to start manage server

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