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Day 04: Terraform Code for Clustered Web Server

Today's focus is on developing a more robust understanding of input variables, local variables, and deploying complex infrastructure using Terraform.
Key learnings include the use of input variables to make configurations flexible, local variables to simplify expressions and enable reusable configurations, and deploying a highly available web application using multiple EC2 instances.
Activities involved deploying a configurable web server using input variables and exploring Terraform's documentation to gain deeper insights into providers, resource blocks, and workflows.
The experience was challenging and rewarding, highlighting the importance of infrastructure as code and promising to continue the journey.

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Dev

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Automating Azure Project Setup with PowerShell and GitHub Actions

Setting up a new project on GitHub that integrates Azure services and GitHub Actions pipelines is something I frequently do.
To streamline this repetitive process, I recently developed a Quickstart Template for Azure Kubernetes Service (AKS) that includes an Azure Container Registry (ACR) and a fully automated CI/CD pipeline.
A PowerShell function was created to automate the setup process, which includes automating service principal creation and permission assignment, configuring federated credentials for GitHub Actions, and populating GitHub repository secrets with the required variables.
The repository provides a preconfigured CI/CD pipeline, step-by-step guide, and a template for deploying and managing applications and infrastructure using Kubernetes, Azure, and Docker.

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Dev

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Day 5: Interacting with Containers

Today we will continue with our Go application from Day 4 and make it a bit more interesting.
We will start by running a simple HTTP server and then see how we can interact with it!
Printing hello world is of course a bit boring, so let's make our application a bit more interesting by adding a simple HTTP server.
Here we basically just create one route (/) that will print Hello World! when someone visits the root path.
You can still use the same Dockerfile from yesterday and build the image just like we did yesterday.
This is because Docker containers are isolated from the host by default.
You need to explicitly tell Docker that you want to expose a port.
The expose instruction actually doesn't expose the port to the host, it is basically just documentation to bridge the knowledge between the developer who wrote the Dockerfile and the people who will use it.
I want to show you three helpful commands to interact with your containers. docker ps, docker stats, and docker exec!
The -it flags are used to attach your terminal to the container so you can use it.

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How To Create A New User And Assign Super User Privileges On Your Ubuntu Server

To create a new user on your Ubuntu server, open your terminal and execute the command 'sudo adduser [user_name]' replacing [user_name] with the desired username.
To assign superuser privileges to the new user, run the command 'sudo usermod -aG sudo [user_name]' replacing [user_name] with the username you created.
Creating a new user and granting them superuser privileges on Ubuntu server is essential for administrative tasks.
Ensure you choose a strong password during the user creation process to maintain server security.

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EKS Auto Mode Arrives in Terraform – Simplify Kubernetes Today

AWS introduced EKS Auto Mode during AWS re:Invent 2024 to simplify Kubernetes cluster creation.
Terraform eks module v20.31.0 now supports EKS Auto Mode and EKS Hybrid Nodes.
EKS Auto Mode automatically provisions EC2 nodes, eliminating the need for manual node provisioning.
Using EKS Auto Mode simplifies the code and reduces the need for managing EKS resources.

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Javacodegeeks

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GitOps: Revolutionizing Continuous Delivery with Git as the Source of Truth

GitOps is a modern approach to managing infrastructure and application deployment by using Git repositories to define and control the desired state of a system.
Key benefits of GitOps are enhanced automation, improved visibility, simplified rollbacks, consistency, and stronger security.
GitOps methodology uses Git repositories as the single source of truth for the desired state of a system.
GitOps introduced improved security, enhanced visibility, and streamlined workflows for developers.
GitOps automates deployments and synchronizes infrastructure configurations with the desired state stored in Git.
Popular GitOps tools are ArgoCD, Flux, Jenkins X, Spinnaker, and Terraform.
GitOps offers a revolutionary way to simplify and automate continuous delivery, particularly in Kubernetes-based environments.
As organizations increasingly adopt cloud-native architectures, GitOps is quickly becoming a cornerstone of modern DevOps practices.
GitOps shines in Kubernetes-based setups by addressing key challenges in managing complex clusters.
While GitOps is powerful, it's not without challenges like a steep learning curve, tooling complexity, and scaling issues.

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Dev

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Navigating Through the Latest AWS Pricing Increase: What You Need to Know

The recent AWS pricing increase has prompted a need for strategic cost management and optimization. Understanding AWS's pricing structure and recent increases is crucial for effective budget management in the cloud. Deploying best practices like committing to a certain level of usage over time, identifying underutilized resources, and utilizing the right pricing models can lead to significant savings and more efficient resource utilization. Success stories from major brands have important lessons to share about successful strategies for cost optimization. The adoption of FinOps financial operations marks a transformative approach to managing cloud costs within AWS - it ensures that every dollar spent is aligned with business value.
AWS pricing is based on four principles: pay as you go, pay less by using more, save when you reserve, and free tier. AWS's pricing model is designed to offer flexibility and cost-effectiveness, allowing users to scale services to their needs without upfront costs.
Amazon Web Services (AWS) has introduced several updates to its pricing structure, aimed at providing more flexibility and cost-saving opportunities for its customers. AWS Savings Plans offer a way to commit to a consistent usage level over a one or three-year period, resulting in substantial cost savings. Spot Instances allow you to bid on unused EC2 capacity at lower prices than on-demand rates. By strategically combining Savings Plans and Spot Instances, organizations can optimize their cloud expenditure without sacrificing performance or availability.
Reducing costs in AWS, particularly for EC2 instances, requires a strategic approach. Regular housekeeping like deleting unattached EBS volumes can lead to significant savings. To manage EC2 instances, use EC2 Auto Scaling groups or Spot Fleet to manage your Spot instances automatically. Spot Amazon EC2 Instances with Low Utilization and leverage underutilized Reserved Instances to further reduce costs.
AWS Cost Optimization Hub is a centralized platform that simplifies the process of identifying cost-saving opportunities across various AWS services. AWS Bill Monitoring tools can provide early warnings for cost overruns, allowing for proactive adjustments before expenses escalate. Incorporating FinOps principles into AWS cost management can navigate the complexities of cloud spending with greater precision and control.
To optimize AWS costs, consider adopting best practices like right-sizing resources, using AWS Savings Plans, leveraging Spot Instances, and regularly reviewing and monitoring your AWS usage with cost optimization tools and services provided by AWS. By staying informed, staying agile, and continuing to seek out resources like our comprehensive guides, businesses can mitigate the impact of price hikes and even uncover new savings opportunities.
To prepare for future AWS pricing adjustments, stay informed about AWS updates and continuously monitor your usage and costs. Incorporating FinOps practice and preparing for potential pricing “gotchas” can future-proof your organization's cloud investment.
Adopting FinOps—financial operations—marks a transformative approach to managing cloud costs within AWS. It involves understanding and controlling AWS costs through practices like resource optimization, cost allocation, and budgeting. By embedding FinOps principles into AWS cost management, organizations can navigate cloud spending with greater precision and control.
AWS EC2 offers several pricing options including On-Demand, Reserved Instances, Savings Plans, Spot Instances, and Dedicated Hosts. Stay vigilant by regularly reviewing and monitoring your AWS usage and costs, and leverage best practices to maintain cost-effectiveness.
AWS pricing increases necessitate a proactive approach to cost management. AWS goals align to revenue generation, so when you align pricing with the value delivered, you can ensure that your investment in AWS is both cost-effective and aligned with your business objectives. Optimizing AWS costs resolves to be an ongoing process that requires vigilance and strategic planning.

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Navigating Common Challenges and Issues with AWS

Effective AWS cost management involves using tools like AWS Cost Explorer and AWS Budgets, and regularly optimizing resource utilization.
AWS monitoring can be enhanced with AWS CloudWatch for performance insights and AWS CloudTrail and Config for complex environment management.
Migration challenges, such as legacy application compatibility and data migration complexity, can be addressed through careful planning and AWS migration tools.
Scalability concerns can be mitigated by implementing AWS Auto Scaling and monitoring with Amazon CloudWatch to ensure dynamic resource allocation.
Dealing with third-party products on AWS requires coordination with vendors, understanding AWS's role in security, and maintaining privacy during interactions.
Optimizing resource utilization includes reviewing the AWS pricing documentation, utilizing AWS cost optimization services, and engaging with AWS auto-scaling.
AWS monitoring can be effective by configuring custom dashboards, setting up alarms, and regularly reviewing and adjusting your monitoring strategy.
AWS migration can be simplified by assessing the application, updating dependencies, and utilizing AWS migration tools for compatibility checks.
AWS Auto Scaling usage can help address scalability concerns by adjusting resource allocation based on demand using scaling policies and monitoring with Amazon CloudWatch.
When using third-party products on AWS, vendors must be coordinated with understanding AWS's role in security to preserve privacy and confidentiality.

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Dev

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OS Security and Passwords 🔐: Protect Your Digital Universe! 🛡️

Understanding Basic Computer Security: Regular updates, active firewall, and effective antivirus are key components of a secure operating system.
Attack Types and Defense Strategies: Counter phishing, malware, and ransomware attacks through identifying suspicious sources, critical email analysis, and regular data backup.
Password Policy and Best Practices: Follow recommendations like using complex passwords, regular renewal, and implementing two-factor authentication for enhanced security.
The Bottom Line: Cybersecurity is necessary to protect your digital universe. Stay vigilant, informed, and one step ahead of threats.

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Sdtimes

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New report shows signs of slowing supply chain security momentum, plateaued DevOps maturity

The State of Open Source report by Snyk reveals signs of slowing supply chain security momentum and plateaued DevOps maturity.
Dependency tracking and code ship frequency have shown little change since last year.
There is a decline in organizations implementing new tooling for supply chain vulnerabilities and investing in training on supply chain security.
Many organizations are displaying signs of 'AppSec exhaustion', with reduced engagement in security practices.

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Dev

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🚀 First Impressions of EKS Auto Mode – A Game Changer!

AWS has introduced EKS Auto Mode, a new feature that automates cluster operations and reduces costs.
EKS Auto Mode handles tasks like managing node groups, installing add-ons, handling ingress traffic, and optimizing costs.
Key highlights include no idle nodes, dynamic scaling based on resource requirements, and cost efficiency through node scaling.
EKS Auto Mode introduces a pay-as-you-go pricing model for control plane based on the number of EC2 worker nodes.

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Dev

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Strengthening Email Security: A Comprehensive Guide to SPF, DKIM, and DMARC Implementation

Email security has become increasingly critical in today's digital landscape.
This article explores three key technologies that form the foundation of modern email security: SPF, DKIM, and DMARC.
SPF verifies the authorization of sending mail servers, DKIM ensures the integrity of email content, and DMARC coordinates and enforces security policies.
Implementing SPF, DKIM, and DMARC is crucial for organizations to ensure reliable email delivery and protect their domain reputation.

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Kubernetes Multi-Container Pods: Sidecar, Adapter and Ambassador Patterns

Kubernetes pods support multi-container pods that house multiple containers sharing resources.
Key concepts include shared storage, shared network, and coordinated lifecycle.
Common design patterns for multi-container pods are the Sidecar, Adapter, and Ambassador patterns.
Hands-on examples demonstrate implementing these patterns with Nginx, metric conversion, and API calls.

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Siliconangle

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AI and DevOps: Transforming incident management in the age of complexity

Incident management is undergoing a transformation as businesses deal with complex digital ecosystems.
Automation and advanced AI capabilities are streamlining incident management, improving productivity, and quality of life for workers.
PagerDuty, leveraging AWS, is using AI and automation to address incidents and issues effectively.
Generative AI and automation are enabling quicker root-cause analyses and better incident triage.

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Hashicorp

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Terraform delivers launch-day support for Amazon S3 Tables, EKS Hybrid Nodes, and more at re:Invent

Terraform AWS provider now supports new AWS launch-day features including S3 Tables, S3 Express, EKS, ECS, etc.
S3 Tables optimize storage for analytics workloads reducing cost and improving query performance.
Terraform AWS provider now has support for Amazon EKS Hybrid Nodes that simplify on-premises applications delivery and standardize operational practices across environments.
Ephemeral resources such as secrets can now be used without being stored in plain text within state files using Terraform 1.10's AWS Provider.
The AWS Cloud Control provider provides users with faster support for new AWS features and services by automatically generating the provider based on the Cloud Control API published by AWS.
AWS users can use the new AWSCC provider alongside the existing AWS provider to increase resource coverage and reduce time it takes to support new capabilities.
Hands-on tutorials to learn basics of Terraform AWS provider are available on the HashiCorp developer education platform.
One can also sign-up for Terraform Cloud to get started using the free offering today.

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