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Semih Üstündağ
Semih Üstündağ

3 Followers

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Aug 27, 2021

Kubernetes Deployment & ReplicaSet

What is a ReplicaSet? A ReplicaSet’s purpose is to maintain a stable set of replica Pods running at any given time. A ReplicaSet ensures that a specified number of pod replicas are running at any given time. We often don’t need to create a ReplicaSet directly. Instead we use Deployment to manage a ReplicaSet…

Kubernetes

2 min read

Kubernetes

2 min read


Aug 27, 2021

Kubernetes, Beginning with PODs

What is a POD? A Pod is the smallest deployable unit that can be created and managed in Kubernetes. In the official documentation you can find much more theoretical information about Pods. In this post I try to go over practical usage of Pods. How to create and run a POD? There are mainly 2 ways of creating Pods in Kubernetes…

Kubernetes

3 min read

Kubernetes

3 min read


Aug 27, 2021

Working with Ansible Playbook

Playbooks are Ansible’s configuration, deployment, and orchestration language. They can describe a policy you want your remote systems to enforce, or a set of steps in a general IT process. At a basic level, playbooks can be used to manage configurations of and deployments to remote machines. You can read…

Ansible

2 min read

Ansible

2 min read


Aug 27, 2021

Install & Configure Ansible

With Ansible you can automate the processes of installing packages or configuring applications. To install Ansible on Ubuntu all you need to do is add the package to system and then apt install it. $ sudo apt update $ sudo apt install software-properties-common $ sudo apt-add-repository --yes --update ppa:ansible/ansible $ sudo apt install…

Ansible

2 min read

Ansible

2 min read


Aug 27, 2021

Assing Key Pair Value to EC2 with Terraform

Let’s create a new folder to work on, terraform file and a directory for our keys. $ mkdir -p key-pair-example/keys $ touch key-pair-example/main.tf Inside the folder key-pair-example run the command to create our keys. $ ssh-keygen -q -f keys/terraform-key-pair -C aws_terraform_ssh_key -N '' Now we can create our terraform file…

Terraform

1 min read

Terraform

1 min read


Aug 27, 2021

How to pass variables to a JSON file in Terraform

Let’s say you are creating an IAM policy with Terraform by using a seperate json file which includes the statement for the policy. In a typical statement we have 4 values to satisfy. These are Sid, Effect, Action and Resource. { "Version": "2012-10-17", "Statement"…

Terraform

2 min read

Terraform

2 min read


Jan 4, 2021

Terraform — Using Modules Multiple Times

Imagine you need to create multiple instances with each different AMI, instance type, AZ etc. One way to achieve this is having multiple aws_instance resource with each different configuration. With this approach, you only write repetitive code which is not ideal. To not repeat ourselves, we can use for_each property. …

Terraform

1 min read

Terraform

1 min read

Semih Üstündağ

Semih Üstündağ

3 Followers

a devops engineer

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