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 Setup kubernetes multi-node cluster on AWS  There are a number of ways to setup k8s cluster either on your workstation or VM or cloud. Even major cloud providers also give k8s cluster as a service. To setup k8s multi node cluster I am using AWS EC2 instance one master and one worker node with below specifications: 2 EC2 instances  Amazon Linux 2 AMI 64-bit (x86) Instance Type:- t2.micro 1vCPUs, 1GiB Security group:- enable all traffic. (not a recommended approach but to keep things simple ) First install docker as k8s needs a container engine to launch containers. sudo su - root yum install docker -y Start docker service and enable it to restart automatically after system reboot. systemctl enable docker --now To install kubeadm (main tool to install k8s multi node cluster) we have to configure yum repository for kubernetes as below cat <<EOF | sudo tee /etc/yum.repos.d/kubernetes.repo [kubernetes] name=Kubernetes baseurl=https://packages.cloud.google.com/yum/repo...
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Create custom VPC with private and public subnets

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  Create a custom VPC with public and private subnets and run EC2 instances on it. In this blog we will use AWS CLI version2 to create a custom VPC  along with private and public subnets and finally we will run new EC2 instances on this VPC. To begin with, let's create a VPC with name as paulVPC2 and CIDR-Block range as 192.168.0.0/16 using below aws cli command aws ec2 create-vpc ^ --cidr-block 192.168.0.0/16 ^ --tag-specifications="ResourceType=vpc,Tags=[{Key=Name,Value=paulVPC2}]" The symbol '^' is used in windows for line continuation similar to '\' in linux. To get the vpc-id of the above VPC use below aws cli command aws ec2 describe-vpcs ^ --output json In this VPC we will create a subnet with name=paulSubnet1 in Mumbai 1a AZ aws ec2 create-subnet ^ --cidr-block 192.168.1.0/24 ^ --vpc-id vpc-0855a7ab2ac29fb28 ^ --availability-zone ap-south-1a ^ --tag-specifications="ResourceType=subnet,Tags=[{Key=Name,Value=paulSubnet1}]" Insid...
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Create and attach an aws EBS volume

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Hello everyone, today we are going to create an aws EBS volume and attach it to a running aws  EC2 instance. This volume then can be used to store persistent data like we use a pen drive to store data. As per AWS,  Amazon Elastic Block Store (Amazon EBS) provides block level storage volumes for use with EC2 instances. EBS volumes behave like raw, unformatted block devices. You can mount these volumes as devices on your instances. EBS volumes that are attached to an instance are exposed as storage volumes that persist independently from the life of the instance. You can create a file system on top of these volumes, or use them in any way you would use a block device (such as a hard drive). You can dynamically change the configuration of a volume attached to an instance. So let's login to your AWS account and open EC2 service . Scroll down and click on Elastic Block Store and then Volumes . Now Click on Create Volume button to create a new EBS volume In the next page Select th...
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How to create an AWS EC2 instance

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In this blog we are going to create an AWS EC2 instance. As per AWS,  Amazon Elastic Compute Cloud (Amazon EC2) is a web service that provides secure, resizable compute capacity in the cloud. It is designed to make web-scale cloud computing easier for developers. Amazon EC2 offers the broadest and deepest compute platform with choice of processor, storage, networking, operating system, and purchase model. So first login to your AWS account and then go to EC2 Services . Click on Launch instances and select your Amazon machine Image . AMI is the type of OS that you want to boot in your ec2 instance. Amazon offers rich flavours of OS from Linux servers to Windows servers. Now Choose an Instance type . Instance type is the specification of compute capacity like amount of RAM & CPU. t2.micro is the only instance type that comes under free tier. For all others amazon will charge. Next Configure instance details like number of instances that we want to boot, aws region ( Subne...
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