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Avoid the Mistakes That Led to the NTT Breach: Secure Linux User Onboarding and Access Control

Over 18,000 organizations suffered due to weak access control in the NTT Communications breach.
To avoid similar breaches, focus on secure onboarding, least privilege, and strict access control using Linux best practices.
Key steps include creating new groups, setting up user accounts securely, enforcing security policies, and protecting sensitive data.
Implementing practices like password complexity, expiry, restricting file access, and basic monitoring can help in securing the system.

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Dev

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Kubernetes: The Overblown Balloon in the Tech Playground

Kubernetes, the popular tool in the tech world, has come under scrutiny for its complexity and resource consumption.
The extensive learning curve and abundance of terminology make Kubernetes a challenging platform for many developers.
Kubernetes's resource-intensive nature can lead to high cloud bills, especially with auto-scaling features.
Running Kubernetes locally for development can be demanding on hardware and decrease battery life.
For simpler projects, a basic server setup or tools like Docker Compose may suffice, making Kubernetes unnecessary.
While Kubernetes often aligns with microservices architecture, it may be overkill for projects with fewer services.
Serverless platforms and AI-powered alternatives are emerging as simpler, more efficient options compared to Kubernetes.
Kubernetes excels in managing large, complex systems but may not be suitable for smaller projects.
Before opting for Kubernetes, assessing the need for complexity, team capabilities, costs, and simpler alternatives is advised.
Choosing the right tool for the job, even if not the trendiest, is crucial to efficient development and deployment processes.

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Elite Performance Is Wasted on Feature Factories

Elite performance in DevOps is about running more experiments with high confidence to enable organizational learning.
Achieving elite performance involves deploying early, often, with low failure rates, and fast recovery in DevOps.
Elite performers in DevOps can deploy many times a day with lead times under an hour, low failure rates, and fast recovery times.
Embedding technical practices like continuous delivery is essential for achieving elite performance in software delivery.
Feature-driven teams in software development can fall into the trap of delivering every feature request, leading to software failure.
Experimental teams focus on maximizing learning through iterative experimentation and removing what doesn't work.
Continuous delivery contributes to shorter feedback cycles and aims to create impact rather than just more features.
Short feedback loops in software development decrease risk, reduce rework, improve well-being, and maximize learning.
Delayed feedback in software development can lead to hidden market risks and accumulation of proxy feedback.
Case study comparisons show the importance of an experimental approach in achieving desired outcomes and learning from attempts.
Elite performance allows for fluid experimentation and faster accumulation of knowledge in software development.

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Dev

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RBAC vs. LBAC: Which Scales for Multi-Tenant Dashboards?

Multi-tenancy in observability platforms like Grafana often challenges traditional RBAC, leading to the adoption of LBAC.
RBAC assigns permissions based on roles, while LBAC filters data dynamically based on labels, enabling fine-grained data isolation.
RBAC simplicity suits single-tenant setups, but struggles at scale due to limited granularity and role explosion.
LBAC offers scalable data isolation with dynamic policies, overcoming RBAC limitations in multi-tenant environments.
RBAC alone presents challenges like role explosion, security risks, and operational overhead in multi-tenant Grafana setups.
LBAC resolves challenges by simplifying management, enhancing security, and providing greater flexibility for multi-tenancy.
Combining RBAC roles with label-based policies is recommended for effective multi-tenant dashboards in Grafana.
Implementing LBAC with tools like Giam offers centralized management, granular data isolation, audit trails, and zero operational overhead.
The future trend leans towards hybrid RBAC+LBAC models, backed by external enforcement tools, for secure multi-tenancy.
RBAC and LBAC complement each other, with RBAC providing the base and LBAC offering granular control for secure multi-tenancy.
Tools like Giam integrate RBAC and LBAC efficiently, simplifying secure multi-tenancy and empowering teams to focus on value delivery.

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Itrevolution

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Why the Business-IT Gap Exists and How to Begin Closing It

The divide between business and IT has been a persistent challenge in organizations for decades.
Lack of true partnership between business and technology persists despite the importance of technology for competitive advantage.
Misalignment between business and IT leads to significant costs, with aligned organizations outperforming others.
Causes of the business-IT gap include different mental models, languages, structural barriers, and cultural differences.
Steps to bridge the gap include understanding business context, mapping value streams, measuring shared metrics, and creating forums for dialogue.
Recommendations include experimenting with product-based funding and building trust.
Initial steps set the foundation for a deeper partnership, with upcoming parts of the series exploring shared understanding and joint ownership of outcomes.
Practical actions taken today can lead to a lasting value creation for organizations in business-IT partnership.
Further discussion points in the series include building trust and sustaining long-term partnership.

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Dev

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🚀 How to Deploy Any WordPress Web App Using Docker

Developer or WordPress enthusiasts can containerize websites for portability and deployment using Docker.
The project structure includes Dockerfile, wp-content directory, wp-data.xml, and docker-compose.yml.
The Dockerfile extends the official WordPress image and adds custom plugins while the Docker Compose file sets up WordPress and MySQL.
Launching WordPress involves building and starting the containers using 'docker-compose up --build'.

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Hackernoon

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How to Set Up a Free Oracle Cloud VM for Web Development (2025 Guide)

Oracle Cloud offers a true 'always free' cloud VM with generous specs like 4 vCPU, 24 GB RAM, and 200GB storage.
The registration process includes providing a payment method for identity verification, with resources staying within 'Always Free' limits.
Setting up an instance involves selecting an operating system like Ubuntu and configuring the instance shape within the free tier limits.
Networking setup includes configuring SSH access and storage allocation, ensuring smooth operation of the VM.
Additional ports like 80 and 443 may need to be exposed by updating security rules and potentially configuring iptables.
Using the free VM for development purposes allows accessing it from various devices and utilizing tools like Mosh for persistent terminal sessions.
Oracle's free VM serves as a valuable platform for deployment tests, CLI experimentation, and lightweight app hosting.
Additional resources include Oracle's 'always free' offerings, VCN configuration, and Mosh for mobile shell access.

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Dev

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🔐 AWS Elastic Beanstalk Now Supports Custom Security Group Configuration

AWS Elastic Beanstalk now allows custom security group configuration during application deployment.
Users can opt for custom security groups instead of default ones for EC2 instances and load balancers.
This update enhances security posture, network control, and consistency in Beanstalk deployments.
It provides greater security transparency and control for various deployment scenarios, aligning with existing VPC configurations.

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Dev

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🚀 Amazon ECR Now Supports IPv6 for Private and Public Registries

Amazon ECR now supports IPv6 for both private and public registries, enabling users to pull container images over IPv6 using AWS SDK or Docker/OCI CLI.
The new dual-stack endpoints automatically resolve to IPv4 or IPv6 addresses based on client/network configuration, simplifying transitions away from NAT-based networking.
IPv6 support offers virtually unlimited IP addresses, improved routing efficiency, easier scaling across container fleets, and better compatibility with modern cloud-native tools.
To get started, users need to update their endpoint URL, ensure IPv6 compatibility in their VPC/network, and continue using Docker/OCI CLI or AWS SDK without changes in command syntax.

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Scaling and troubleshooting Amazon EKS just got easier with MCP on Anthropic Claude

Troubleshooting Amazon EKS just got easier with MCP on Anthropic Claude, simplifying Kubernetes operations for Platform/DevOps Engineers.
Transition from VMs to containers and microservices has complexities in maintaining operational excellence and managing Kubernetes upgrades.
Amazon EKS Auto Mode offers improved functionality over AWS Fargate, ensuring clusters and components are up to date with the latest patches.
EKS Auto Mode requires testing applications for compatibility with upcoming Kubernetes versions, simplifying Kubernetes operations.
Integrating an MCP server with Amazon EKS Auto Mode can streamline troubleshooting processes using Claude Desktop UI, reducing operational overhead.
The idea of connecting an MCP server to EKS for troubleshooting purposes could enhance operational efficiency for Engineers.
With tools like Claude, running kubectl commands is automated, eliminating the need to search for commands and switches on CNCF webpages.
Using tools like MCP could potentially reduce the reliance on certifications like CKA and CKAD for Kubernetes administrators.
A GitHub repo by Alexi-led showcases an impressive project integrating MCP with EKS Auto Mode, making troubleshooting and scaling seamless.
Automated processes like scaling with Karpenter through Claude demonstrate the potential of simplifying Kubernetes management with integrated tools.

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Automating Google Cloud Image Upgrades with a Custom Renovate Datasource

Building VM images with tools like Packer allows for baking dependencies and versioning images for precise control and automation.
A proposed image naming convention includes using semver or Unix timestamp with a triple hyphen separator to adhere to Google Cloud naming restrictions.
Creating a custom datasource for Google Cloud images in Renovate involves building a cloud function that interacts with GCP Compute API to retrieve and format image versions.
Deploying the cloud function on GCP with Terraform, setting up Renovate to access it securely, and using a custom Renovate manager allows for automated upgrading of GCP images based on versioning conventions.

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Dev

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Access Control Lists in Linux for Granular Permissions (Day 11 of 30)

Access Control Lists (ACLs) in Linux allow for more granular control over file permissions by enabling assignment to multiple users or groups, beyond just the file owner and one group.
Traditional permissions with chmod and chown are limited in providing access to multiple users or different groups on the same file, which is where ACLs excel.
ACLs are useful when sharing files among many users, when standard permissions are insufficient, or in team/project folders with varying roles.
Basic ACL commands like getfacl and setfacl enable checking, setting, and managing permissions for users and groups on files or directories in Linux.

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Dev

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Utility Containers in Docker: A Powerful Tool for Local Development Without Polluting Your Machine

Utility containers in Docker are a powerful tool for local development without cluttering your machine.
They allow running tasks using Docker containers without needing to install dependencies locally.
By creating utility containers for different tasks like Node.js, Python, Go, or Terraform, you can streamline development workflows.
Using Docker Compose with utility containers simplifies setup and offers a consistent development environment for team projects.

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Dev

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🐳 Docker Bind Mounts vs Volumes: What's the Difference?

Docker Volumes vs Bind Mounts - Understand the key differences between them and when to use each.
Volumes - Managed storage mechanism by Docker, suitable for long-term persistence, supports custom drivers.
Bind Mounts - Mount specific host system files or directories into containers, ideal for local development and debugging.
Key Differences - Managed by Docker, path specified, use cases, security, and flexibility differ between Bind Mounts and Volumes.

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Dev

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🚢 How to Make Your K8s Cluster — a Great Cluster

Kubernetes clusters are easy to spin up, but the challenge lies in making one that's secure, scalable, and developer-friendly.
The article provides a guide on creating a great K8s cluster, based on experience with production-grade clusters.
Key features highlighted include Terraform/Ansible-based provisioning, GitOps workflows, secrets management via Vault, monitoring with Prometheus and Grafana, chaos testing, and more.
The blueprint can be adapted for EKS, GKE, or bare-metal clusters, emphasizing the importance of continuous improvement for cluster quality.

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