Terraform Commands/Random Features

Question 1

What does the terraform fmt command do

Answer 1

It is used to rewrite Terraform config files to take care of the overall formatting.

Question 2

How does Terraform load config files if there are a number of them in the working directory?

Answer 2

Terraform loads the config files in the same directory in alphabetical order.

Question 3

What file format will Terraform load using alphabetical order?

Answer 3

The files loaeded must end in either .tf or .tf.json to specify the format that is in use.

Question 4

How can you report Terraform bugs?

Answer 4

You can report bugs in the Terraform Core Github or appropriate provider page

Question 5

Whats debugging?

Answer 5

The process of finding the root cause of a specific issue.

Question 6

What’s an important requirement for debugging?

Answer 6

Getting detailed log information.

Depending on the app, the approach to get detailed logs will differ.

Question 7

What flag do you add to Terraform to output log information?

Answer 7

-v

If you need more log info you’d add more v’s.

Ex. -vvvv

Question 8

How to get detailed logs?

Answer 8

You can set the TF_LOG environment variable to any value.

The value for TF_LOG can be set to the values below where TRACE is the most verbose and ERROR is the least verbose.

TRACE
DEBUG
INFO
WARN
ERROR

Question 9

Can you store log from Terraform to a file?

Answer 9

Yes, you can set the TF_LOG_PATH environment variable to force the log to always be appended to a specific file when logging is enabled.

Question 10

How to set the TF_VAR env variable in Windows?

Answer 10

The command,

set TF_LOG=VALUE

where VALUE is the log level (TRACE,DEBUG,etc)

The command

set TF_LOG_PATH=file.txt
saves the information to a text file

Question 11

How to set the TF_VAR env variable in Linux?

Answer 11

export TF_LOG=VALUE

where VALUE is the log level (TRACE,DEBUG,etc)