A Technical I.T./DevOps Blog
Question
You see that Python’s sorted reserved word has an option to use a key (rather than the default mechanism). How does the key parameter/flag in Python’s sorted function work?
Short Answer:
The word “key” designates a special function that you create. It accepts two parameters and returns positive or negative numbers. These help give you the ability to sort the list in a non-standard way.
…
Continue reading “How Does sorted(list_arg1, key=arg2) Work in Python?”
Question
How are Terraform provisioners different from Terraform User Data? Both usually involve scripts to customize a server.
Answer
Provisioners have built-in support for CM tools and can have scripts longer than 16 KB; these things are not true with User Data. (This was taken from page 213 of Terraform: Up & Running, 2nd Edition by Yevgeniy Brikman (O’Reily), Copyright 2019,
…
Continue reading “How are Provisioners in Terraform Different from User Data?”
Problem scenario
You live in a northern latitude and it stays light until late at night and gets light out early in the morning. How do you sleep under these conditions?
Solution
Background information: Sleep is important. Research says you should try to get more than eight hours of sleep.
Buy a high quality sleep mask (as opposed to a very affordable one).
…
Question
What are the six Rs in an AWS Migration?
Re-execute
Re-purchase
Refactor
Rehire
Re-host
Recreate
Retain
Retire
Remove
Refrain
Reuse
Remark
Re-platform
Answer: Re-host, Re-platform, Refactor, Re-purchase, Retire, Retain
Source:
https://docs.aws.amazon.com/whitepapers/latest/aws-migration-whitepaper/the-6-rs-6-application-migration-strategies.html
…
Problem scenario
A Terraform task is failing in an Azure DevOps release pipeline. You cannot see a variable setting for the working directory. How do you determine the working directory?
Solution
Go to Edit your release pipeline. Go to “View YAML” in the upper right hand corner. Search for “working”. You should see it (e.g., as workingDirectory).
The working directory key probably has a value that is a variable (e.g.,
…
Continue reading “How Do You Find the Working Directory in an Azure DevOps Release Pipeline?”
Problem scenario
You have read about heaps in computer programming and in operating systems. What do the different definitions of “heap” mean in I.T.?
Overview
Merriam-Webster’s Dictionary (11th Edition, on page 574) defines a heap as “a collection of things thrown one on another” or as a “pile.” The same word can have completely different meanings in English; a trash heap,
…
Continue reading “What Is The Disambiguation of The Word “heap” in I.T.?”
1. Which is one of the five pillars of a well-architected AWS framework?
a. Archived versions (of IaC)
b. Disaster Recovery
c. Monitoring
d. Performance Efficiency
e. None of the above
2. Signature version 4 is which of the following?
a. A certificate file from Amazon Web Security.
b. An SSL public key for AWS.
c. An SSL private key for AWS.
…
1. Which is one of the five pillars of a well-architected AWS framework?
a. Archived versions (of IaC)
b. Disaster Recovery
c. Monitoring
d. Performance Efficiency
e. None of the above
Answer: D. Source: https://aws.amazon.com/blogs/apn/the-5-pillars-of-the-aws-well-architected-framework/
2. Signature version 4 is which of the following?
a. A certificate file from Amazon Web Security.
b. An SSL public key for AWS.
…
Problem scenario
You have two hard drives in your laptop. You want to be able to boot to one or the other. The BIOS options are confusing. What do you do?
Possible Solution (directions primarily for HP laptops)
…
Continue reading “How Do You Boot to One of Two Hard Drives?”