8080<\/td> Application Servers (e.g., Tomcat)<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\nExample: Allow SSH Access<\/strong><\/p>\n\n\n\nplaintextCopyEditType: SSH\nProtocol: TCP\nPort Range: 22\nSource: Your IP or 0.0.0.0\/0 (less secure)\n<\/code><\/pre>\n\n\n\nPro Tip<\/strong>: In production, restrict SSH to specific IP addresses only.<\/p>\n\n\n\nReal-world DevOps deployments often use Security Groups in combination with NACLs (Network Access Control Lists) to create secure, scalable environments.<\/p>\n\n\n\n
4. Hibernate Feature in EC2<\/h3>\n\n\n\n Ever wanted to pause an instance, save its exact state, and resume later? That\u2019s where Hibernate comes into play.<\/p>\n\n\n\n
Why Use Hibernate?<\/strong><\/p>\n\n\n\n\nSaves in-memory data.<\/li>\n\n\n\n Faster resume compared to stop\/start.<\/li>\n\n\n\n Useful for development\/test environments where quick resume is essential.<\/li>\n<\/ul>\n\n\n\nHow to Enable Hibernate:<\/strong><\/p>\n\n\n\n\nChoose an EC2 instance type that supports hibernation (e.g., t2.medium, m5.large).<\/li>\n\n\n\n Allocate enough root volume storage for the saved memory.<\/li>\n\n\n\n Enable Hibernate during the instance launch or configuration.<\/li>\n<\/ol>\n\n\n\nReal-World Scenario<\/strong>:Understanding hibernate adds to your command over AWS EC2 basics in DevOps with AWS training.<\/p>\n\n\n\n
AWS EC2 Basics in DevOps Pipelines<\/h2>\n\n\n\n In modern CI\/CD pipelines, EC2 instances often:<\/p>\n\n\n\n
\nRun Jenkins or GitLab CI runners.<\/li>\n\n\n\n Host artifact repositories like Nexus.<\/li>\n\n\n\n Provide isolated test environments.<\/li>\n<\/ul>\n\n\n\nExample Workflow:<\/strong><\/p>\n\n\n\n\nCode pushed to Git repository.<\/li>\n\n\n\n Jenkins (on EC2) picks up the change.<\/li>\n\n\n\n Builds, tests, and deploys the application.<\/li>\n\n\n\n EC2 auto-scaling adds or removes instances based on load.<\/li>\n<\/ol>\n\n\n\n\nEvidence<\/strong>:AWS EC2 basics are central to optimizing such pipelines for scalability and reliability.<\/p>\n\n\n\n
Core Features of AWS EC2<\/strong><\/h2>\n\n\n\n\nVirtual Servers in the Cloud<\/strong>\nLaunch scalable virtual machines (instances) quickly. Choose instance types optimized for compute, memory, or storage. Elasticity & Scalability<\/strong>\nAuto Scaling to handle demand spikes. Elastic Load Balancing distributes traffic across instances. Variety of Instance Types<\/strong>\nGeneral Purpose (e.g., t3, m5) Compute Optimized (e.g., c5) Memory Optimized (e.g., r5) Storage Optimized (e.g., i3) GPU Instances for ML\/AI workloads (e.g., p4, g5) Persistent Storage with EBS<\/strong>\nAttach Elastic Block Store (EBS) volumes for durable storage. EBS Snapshots for backup and recovery. Flexible Networking<\/strong>\nAssign Public, Private<\/strong>, and Elastic IPs<\/strong>.Use Security Groups<\/strong> and Network ACLs<\/strong> to control traffic.Connect securely via SSH<\/strong> or EC2 Instance Connect<\/strong>.Custom AMIs (Amazon Machine Images)<\/strong>\nLaunch multiple instances with pre-configured environments. Pay-As-You-Go Pricing<\/strong>\nOn-Demand, Reserved, Spot, and Savings Plans. Integration with Other AWS Services<\/strong>\nUse with S3, RDS, CloudWatch, IAM, Lambda, etc. Monitoring & Logging<\/strong>\nAmazon CloudWatch for performance metrics and logs. EC2 Hibernate & Stop\/Start<\/strong>\nHibernate: Save RAM content to EBS for faster boot. Start\/Stop: Pause billing when not in use. High Availability & Fault Tolerance<\/strong>\nUse Availability Zones (AZs) and Regions for redundancy. Launch Templates & Auto Scaling Groups<\/strong>
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