TILs - Fueling Curiosity, One Insight at a Time

At Codemancers, we believe every day is an opportunity to grow. This section is where our team shares bite-sized discoveries, technical breakthroughs and fascinating nuggets of wisdom we've stumbled upon in our work.

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Neehar Priydarshi
Using git rebase command allows you to modify the history of your repository by changing a sequence of commits. It lets you to reorganise, modify, and merge commits. Git rebase is commonly used for resolving conflicts.
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Soniya Rayabagi
The <<-EOF and EOF are Terraform's heredoc syntax, This syntax enables the creation of multiline strings in Terraform configuration files without the need to manually insert newline characters (\n).
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Nisanth
To check if an instance is running using Terraform, you can use the following command:
terraform show
This command displays the current state of your infrastructure as recorded by Terraform. It will show information about the resources that Terraform has created, including details about the EC2 instance, such as its ID, IP address, and other attributes.
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Nisanth
If we want to create an instance in different regions within the same Terraform file, we need to use provider aliases. In Terraform, a single file typically contains one default provider configuration for ‘aws.’ To work with multiple regions, we use provider aliases.
Instead of having two separate provider blocks, we add aliases to them. For example:

Code

hcl
provider "aws" {
  alias  = "us-east-2"
  region = "us-east-2"
}

resource "aws_instance" "example" {
  provider       = aws.us-east-2
  ami            = "ami-id"
  instance_type  = "t2.micro"
}

provider "aws" {
  alias  = "us-east-1"
  region = "us-east-1"
}

resource "aws_instance" "example1" {
  provider       = aws.us-east-1
  ami            = "ami-id"
  instance_type  = "t2.micro"
}


This way, we can create instances in different regions using a single Terraform file, and each instance is associated with its respective region through the use of provider aliases
Published
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Soniya Rayabagi
how to troubleshoot the visibility of an AWS EC2 instance.
discovered that instances may not appear in the console if deployed in a different region , verified instance existence by providing the correct region in the AWS console.
example:

Code

provider "aws" {
 region = "us-east-2"
}

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Author
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Satya
if you are using ngrok to expose your localhost , you can serve that in a static domain.
Every time you start ngrok it will use the same domain name

Code

ngrok http --domain=<your-domain>.https://ngrok-free.app|ngrok-free.app <port>

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Author
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Satya
setup tailwind css without using node.js
The below setup is for macOS arm64

Step1

Code

curl -sLO https://github.com/tailwindlabs/tailwindcss/releases/latest/download/tailwindcss-macos-arm64
chmod +x tailwindcss-macos-arm64
mv tailwindcss-macos-arm64 tailwindcss


Step2

Code

./tailwindcss init // this will create tailwind.config.js file


Step3
Create input.css file and import the required tailwind base, components & utilities

Step4

Code

./tailwindcss -i input.css -o output.css --watch // this will generate a output.css file, so make sure to link it in your root file


For production add the tailwind watcher command with --minify flag

Code

./tailwindcss -i input.css -o output.css --minify

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Hilda
ChatGPT 4.0 has a limit of 40 messages per 3 hours while using some of the custom GPTs like DALL·E
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Author
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Soniya Rayabagi
touch filename : Used to create an empty file .
git remote : The command is used to manage remote repositories.
git reset HEAD~1 : Removes the most recent commit from the current branch without modifying the working directory.
git pull origin branch_name : Fetches changes from the specified branch (branch_name) on the origin remote repository.
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Sujay
Activerecord validations & callbacks are not called when upsert_all or insert_all are used. They will be directly converted to raw sql queries and executed

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