AWS using Ansible? Yes, it's possible!

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  Although, I've used Ansible extensively for a lot of automation and orchestration tasks, using Ansible for AWS was indeed, a new territory for me.  This turned out to be a blessing, since along with using Ansible for AWS tasks, I also learnt how to use WSL (Windows Subsystem for Linux) on a Windows machine. Though WSL's been around for some time, I still hadn't come around to using it since I was mostly using my Macbook pro. Not anymore, though!  Anyway, I have listed below the steps to: Install WSL on Windows 11 23H2 patch Install AWS CLI on Ubuntu 22.04 (Exact version - 22.04.3 LTS) Install Ansible and the amazon.aws collection Use AWS CLI to get the list of  VPCs in the region - us-east-1 (or a region of your choice) Create a python file/script to get the list of VPCs in the region - us-east-1 (or a region of your choice) Create an Ansible playbook to get the list of VPCs in the region - us-east-1 (or a region of your choice.   You may download the comple...
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Creating defaultsfile - an easy guide!

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This post is for the automation fanatics and enthusiasts. Of course, the others aren't excluded! The defaultsfile option that can be used with adutilities is a handy option to save time during patching or other maintenance activities.

Though the defaultsfile gets a mention by almost everyone in the context of reducing downtime, the method of creating it is not, unfortunately. In this post, I'd like to share this using an example - compiling apps schema using adadmin.
Note: The full explanation of creating a defaultsfile is mentioned in Chapter 2 (Maintaining Your System) of the Oracle Applications Maintenance Procedures.
1. Run adadmin command as below:

adadmin defaultsfile=$APPL_TOP/admin/$TWO_TASK/<DEFAULTS_FILE_NAME>


e.g.:

adadmin defaultsfile=$APPL_TOP/admin/$TWO_TASK/adadmin_cmpl_apps_schema.txt


The above command searches for a file with name adadmin_cmpl_apps_schema.txt in $APPL_TOP/admin/$TWO_TASK directory. If it exists, it uses the values provided in that file. Else, it creates a new file and the contents of the new file would be the answers that one provides at the subsequent prompts of adadmin.

Note: Not mentioning the correct path would error out as below. So, always ensure that you mention the full path to the default file.

$ adadmin defaultsfile=adadmin_maint_on.txt

Copyright (c) 2002 Oracle Corporation
Redwood Shores, California, USA
Oracle Applications AD Administration
Version 11.5.0

NOTE: You may not use this utility for custom development unless you have written permission from Oracle Corporation.

You have not specified the correct path for defaults file.

The expected location of the defaults file is
$APPL_TOP/admin/$TWO_TASK
and you must provide full access path to the file.

2. Assuming that the defaultsfile does not exist, proceed as you normally would for compiling apps schema.

3. Once the compilation is complete, exit out of adadmin and look for the file $APPL_TOP/admin/$TWO_TASK/adadmin_cmpl_apps_schema.txt.

4. Voilà! You are done! You have the defaultsfile (including passwords) for compiling apps schema. Whenever you want to compile apps schema using adadmin NON-INTERACTIVELY, run the below command:

$ adadmin defaultsfile=$APPL_TOP/admin/$TWO_TASK/adadmin_cmpl_apps_schema.txt


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