# Day40 ----> 90DaysOfDevOps Challenge @TWS ## Day 40: AWS EC2 templates☁ ![AWS](https://www.eginnovations.com/blog/wp-content/uploads/2021/09/Amazon-AWS-Cloud-Topimage-1.jpg align="center") ## Automation in EC2: Amazon Elastic Compute Cloud can give you secure, reliable, high-performance, and cost-effective computing infrastructure to meet demanding business needs. Automation in Amazon EC2 (Elastic Compute Cloud) involves using various tools and services to streamline and simplify the management and deployment of EC2 instances. Here are some key aspects of automation in EC2: * Launch Templates: Launch templates allow you to create reusable configurations for EC2 instances, including instance type, storage, security groups, and more. They streamline the process of launching multiple instances with consistent settings. * Amazon Machine Images (AMIs): AMIs provide a template for launching EC2 instances. You can create custom AMIs with pre-installed software, configurations, and data, allowing for faster and repeatable instance launches. * Auto Scaling: Amazon EC2 Auto Scaling enables you to automatically adjust the number of EC2 instances in a fleet based on demand. It helps maintain application availability, optimize costs, and ensure efficient resource utilization. ## Launch an AWS EC2 using a template: * You can make a launch template with the configuration information you need to start an instance. You can save launch parameters in launch templates so you don't have to type them in every time you start a new instance. * For example, a launch template can have the AMI ID, instance type, and network settings that you usually use to launch instances. * You can tell the Amazon EC2 console to use a certain launch template when you start an instance. Read more [here](https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ec2-launch-templates.html) ### Instance Types: Amazon EC2 has a large number of instance types that are optimized for different uses. The different combinations of CPU, memory, storage and networking capacity in instance types give you the freedom to choose the right mix of resources for your apps. Each instance type comes with one or more instance sizes, so you can adjust your resources to meet the needs of the workload you want to run. Read from [here](https://aws.amazon.com/ec2/instance-types/?trk=32f4fbd0-ffda-4695-a60c-8857fab7d0dd&sc_channel=ps&s_kwcid=AL!4422!3!536392685920!e!!g!!ec2%20instance%20types&ef_id=CjwKCAiA0JKfBhBIEiwAPhZXD_O1-3qZkRa-KScynbwjvHd3l4UHSTfKuigd5ZPukXoDXu-v3MtC7hoCafEQAvD_BwE:G:s&s_kwcid=AL!4422!3!536392685920!e!!g!!ec2%20instance%20types) ### AMI: An Amazon Machine Image (AMI) is an image that AWS supports and keeps up to date. It contains the information needed to start an instance. When you launch an instance, you must choose an AMI. When you need multiple instances with the same configuration, you can launch them from a single AMI. ## Task1: * ### Create a launch template with Amazon Linux 2 AMI and t2.micro instance type with Jenkins and Docker setup (You can use the Day 39 User data script for installing the required tools. ![image](https://github.com/Chaitannyaa/90DaysOfDevOps/assets/117350787/df42b4b3-cd72-4cb9-9342-42c265baeda1 align="left") ![image](https://github.com/Chaitannyaa/90DaysOfDevOps/assets/117350787/286062ef-11d6-4a3a-ab4e-79ad61180be6 align="left") ![image](https://github.com/Chaitannyaa/90DaysOfDevOps/assets/117350787/91d7bd33-f5b0-4a16-9738-4ccf370fe600 align="left") ![image](https://github.com/Chaitannyaa/90DaysOfDevOps/assets/117350787/48dee429-bf67-47c2-89c1-ef5957686346 align="left") ![image](https://github.com/Chaitannyaa/90DaysOfDevOps/assets/117350787/25f1c14f-fc53-4387-8585-cbbb65b5082f align="left") ![image](https://github.com/Chaitannyaa/90DaysOfDevOps/assets/117350787/be607b87-b785-4b57-8849-cfcd2a55de4b align="left") ![image](https://github.com/Chaitannyaa/90DaysOfDevOps/assets/117350787/fcb4c056-50db-4c69-8de8-7619af514c21 align="left") ![image](https://github.com/Chaitannyaa/90DaysOfDevOps/assets/117350787/c89427fd-e9d7-4f33-8ca1-698e23b6c53f align="left") ![image](https://github.com/Chaitannyaa/90DaysOfDevOps/assets/117350787/467ae9c8-6b76-4f13-95b9-13a7e294eb94 align="left") ![image](https://github.com/Chaitannyaa/90DaysOfDevOps/assets/117350787/d2f025c1-d11e-4589-8a2f-b4fd96d4d8f7 align="left") ## Task 2: * ### Create 3 Instances using Launch Template, there must be an option that shows the number of instances to be launched,can you find it? :) ![image](https://github.com/Chaitannyaa/90DaysOfDevOps/assets/117350787/74ead58c-48ee-494a-8923-9144f7d10207 align="left") ![image](https://github.com/Chaitannyaa/90DaysOfDevOps/assets/117350787/4aea109f-57a3-4e77-919f-5d80014e05f4 align="left") ![image](https://github.com/Chaitannyaa/90DaysOfDevOps/assets/117350787/21986681-1918-438c-a79d-dbeb2ef2d5a7 align="left") ![image](https://github.com/Chaitannyaa/90DaysOfDevOps/assets/117350787/3a491eec-1ed4-4418-9667-0ee7a5c725a6 align="left") ![image](https://github.com/Chaitannyaa/90DaysOfDevOps/assets/117350787/0a5af8dd-7712-40ea-9c86-cee589ef0306 align="left") ## Task 3: * ### You can go one step ahead and create an auto-scaling group, sounds tough? ![image](https://github.com/Chaitannyaa/90DaysOfDevOps/assets/117350787/fc28cff5-3c02-41be-ab76-85a431ea91f2 align="left") ![image](https://github.com/Chaitannyaa/90DaysOfDevOps/assets/117350787/de57e3a7-80ad-4820-9ca5-78ec065d6192 align="left") ![image](https://github.com/Chaitannyaa/90DaysOfDevOps/assets/117350787/50468a1b-e3f8-4871-8c47-02b434008877 align="left") ![image](https://github.com/Chaitannyaa/90DaysOfDevOps/assets/117350787/8bed3645-1162-4895-b00e-e32b868a4e64 align="left") ![image](https://github.com/Chaitannyaa/90DaysOfDevOps/assets/117350787/7b05a3fb-59d7-4456-b392-4f193af5aa1d align="left") ![image](https://github.com/Chaitannyaa/90DaysOfDevOps/assets/117350787/fb9b7be7-8707-4710-8cf9-643aaf6349da align="left") ![image](https://github.com/Chaitannyaa/90DaysOfDevOps/assets/117350787/364bcad0-4ed2-44a0-834e-f8dd6f0a681a align="left") ![image](https://github.com/Chaitannyaa/90DaysOfDevOps/assets/117350787/84bf845e-638e-495c-98b5-52b4492862b5 align="left") ![image](https://github.com/Chaitannyaa/90DaysOfDevOps/assets/117350787/87923d0f-fb39-4b3f-9821-4ac10921985d align="left") ![image](https://github.com/Chaitannyaa/90DaysOfDevOps/assets/117350787/cc84b41f-f79a-4ef0-8c8e-838c6f03385e align="left") ### Now increase the CPU utilization of the currently running instance to verify ASG works fine and scale-out works ![image](https://github.com/Chaitannyaa/90DaysOfDevOps/assets/117350787/475217ab-9fc3-4546-ac91-105be0289e19 align="left") ![image](https://github.com/Chaitannyaa/90DaysOfDevOps/assets/117350787/dce521d2-9825-4d25-a995-7e1726dec28c align="left") ![image](https://github.com/Chaitannyaa/90DaysOfDevOps/assets/117350787/ab9d4c19-756b-4b96-bbcf-b583e0415530 align="left") ![image](https://github.com/Chaitannyaa/90DaysOfDevOps/assets/117350787/0dd85ee0-14ad-4be5-b72f-10df0903f622 align="left") ![image](https://github.com/Chaitannyaa/90DaysOfDevOps/assets/117350787/7e35a970-7eb0-4c00-8a27-39216f3e5d73 align="left") ![image](https://github.com/Chaitannyaa/90DaysOfDevOps/assets/117350787/e4473de2-7fd4-4687-bf61-76fcdcd02542 align="left") ![image](https://github.com/Chaitannyaa/90DaysOfDevOps/assets/117350787/975aba8f-0218-4c56-82b6-b329ea4c5a17 align="left") ### Let's reduce CPU load and verify that scale-in works ![image](https://github.com/Chaitannyaa/90DaysOfDevOps/assets/117350787/94b9671e-8dd6-4bf7-b9ab-d90b05a70911 align="left") ![image](https://github.com/Chaitannyaa/90DaysOfDevOps/assets/117350787/742abba8-c99f-49b8-9c1f-daf62ca50409 align="left") ![image](https://github.com/Chaitannyaa/90DaysOfDevOps/assets/117350787/b3a76a18-511f-412b-a714-f7b57df64c5f align="left") ![image](https://github.com/Chaitannyaa/90DaysOfDevOps/assets/117350787/13313ede-6064-4c63-9ff0-fabc33037f18 align="left") ### if you delete ASG then all the instances will be wiped-out ![image](https://github.com/Chaitannyaa/90DaysOfDevOps/assets/117350787/d40b087d-47a4-49ab-9b19-56481f7c90df align="left") ![image](https://github.com/Chaitannyaa/90DaysOfDevOps/assets/117350787/0b1d79fb-f02d-42c5-acf1-12756886e947 align="left") Check out [this](https://docs.aws.amazon.com/autoscaling/ec2/userguide/create-launch-template.html#create-launch-template-for-auto-scaling)! Happy Learning :) ## Day 40 task is completed! **90DaysOfDevOps Tasks👇** [**github.com/Chaitannyaa/90DaysOfDevOps.git**](http://github.com/Chaitannyaa/90DaysOfDevOps.git) [**Chaitannyaa Gaikwad | LinkedIn**](https://www.linkedin.com/in/chaitannyaa-gaikwad-b16965115/recent-activity/shares/)