https://stellar2703.github.io/blog/Shashwath's Digital BrainA minimal, responsive and feature-rich Jekyll theme for technical writing. 2026-07-27T18:25:41+05:30 Shashwath V R https://stellar2703.github.io/blog/ Jekyll © 2026 Shashwath V R /blog/assets/img/favicons/favicon.ico /blog/assets/img/favicons/favicon-96x96.png Jenkins2025-08-14T21:30:00+05:30 2025-08-14T21:30:00+05:30 https://stellar2703.github.io/blog/posts/Jenkins/ Shashwath V R Jenkins Tools in jenkins tools help us to use the commands of the software required There are two possible ways of to these: Installing a plugin Installing the tools directly on that server itself both these methods ensure that the command required by the application is accessible throughout the jenkins JOBS Jenkins Freestyle Job The most basic job type i... Launching AWS EC2 Instances2025-07-18T00:00:00+05:30 2025-07-18T00:00:00+05:30 https://stellar2703.github.io/blog/posts/launching-aws-ec2/ Shashwath V R AMI - Amazon Machine Instances - Marketplace of all the operating systems Launching an EC2 instance Go to Launch an EC2 instance Initialize the Name and the tags Select the Amazon Machine Image Select your required instance type AWS Instance Families Family Use Case Examples t-series Burstable, low-cost general purpose ... Cloud Services Overview2025-07-17T00:00:00+05:30 2025-07-17T00:00:00+05:30 https://stellar2703.github.io/blog/posts/cloud/ Shashwath V R ELK (elastic log stash and kibana) - every event is registered in this service Cloud Watch – monitoring the incidents SNS - simple notification service SQS - simple queue service —- endpoint EBS – elastic block store aws managed service for block level storage S3 - simple storage service AWS managed service for bucket level storage EFS - Elastic file system - storage for file level Classi... SSH2025-07-10T21:30:00+05:30 2025-07-10T21:30:00+05:30 https://stellar2703.github.io/blog/posts/SSH/ Shashwath V R SSH 2 ways to authenticate 1. Username and password 2. SSh Key pair Key pair = public key + private key Private Key = Secret key. Is stored securely on the client machine Public Key = Public. Can be shared, e.g. with the remote server SSH service always runs on port 22 of the server Creating a ssh key pair ssh-keygen -t rsa adding public key to the authorized keys in the ... Networking2025-07-10T21:30:00+05:30 2025-07-10T21:30:00+05:30 https://stellar2703.github.io/blog/posts/Networking/ Shashwath V R Networking IP address is a 32 bit value every 8 group denote an octet seperated by a . So Ip address range from 0.0.0.0 to 255.255.255.255 Switch Sits within the LAN Faciliates the connection between all the devices within the LAN Router ip address of the router is nothing but the gateway while the switch lets one device communicate with the other within a network the ro...