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In today’s blog post, we are going to cover terraform depends_on meta argument. Terraform internally manage dependency between resources to determine the order in which resources will get provisioned, updated, or destroyed. Terraform does this by creating a dependency graph between the resources. For example say you need to provision a server and it’s storage. … Read more
In today’s blog post, we will cover terraform lifecycle meta argument with examples, types, usage, tips, and best practices. The lifecycle meta argument is used to control how terraform manages any configuration changes for a resource, module or data source block. Without a lifecycle defined, if terraform detects any change in the configuration vs actual, … Read more
In today’s blog post, will cover terraform for_each meta argument. In particular, we will explain why we need a for_each construct, how to use for_each meta argument with examples, and what is the difference between a for_each and count meta argument. Introduction: Why for_each? Imagine you need to provision 10 identical EC2 instances. You could … Read more
In today’s blog post, we will learn terraform count meta argument. The count meta argument is used mainly for iteration (looping). For example, using count you can provision multiple resources with the same configuration block or use count with a conditional expression to execute a terraform block based on some condition. The count meta argument … Read more
In today’s blog post, we are going to cover how to troubleshoot “Error acquiring the state lock: ConditionalCheckFailedException.” in terraform. A state file is used by Terraform to map real world resources to your configuration, keep track of metadata, and to improve performance for large infrastructures. When terraform is used by multiple users to manage the same … Read more
Welcome back to “The Git Undo Toolkit” series. So far, we have covered undoing changes in your working directory, staging area, committed history, and git branches. In this blog post, we will cover how undo tag changes in git. Tags are pointers to specific points in your repository’s history, commonly used to mark a release … Read more
Welcome back to “The Git Undo Toolkit”! In our previous blogs, we have explored how to undo changes in your working directory, staging area, and even committed history. In this blog post we are going to cover how to fix any mistakes that might happen to a git branch. Branches are the core component of … Read more
Terraform’s data sources provides a way to fetch information about your infrastructure or external data. While fetching the entire data source details are straightforward using a data source block, the real trick is when you want to get some specific information from the terraform data source block using some conditions. For example, say you have … Read more
Terraform output is a key feature used to get and display important information about what is getting provisioned, debugging your terraform code and also to pass information from one terraform module to another. While in most cases a simple output block suffice the need to display and pass information about the infrastructure getting provisioned. Sometime … Read more
So far we have covered how to undo your mistakes in git working directory and staging area. In this blog post, we are going to learn how to undo committed changes in git. Say you have committed some changes and then realized that you made a mistake and now you want to fix that mistake. … Read more