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Hackernoon

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The HackerNoon Newsletter: Your Career Is Not Your Personality. Sorry. (4/21/2025)

Top stories featured in The HackerNoon Newsletter on April 21, 2025 include Startup Fundraising, Fake VCs, and an Actual Stalker: My Founder Horror Story, Real Growth Isn’t About More Discipline — It’s About Deeper Clarity, Meet the HackerNoon Top Writers - Satisfying the Curiosity Crunch: My Tech Writing Expedition, and Your Career Is Not Your Personality. Sorry.

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Dev

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How AI handles your cloud deployment automatically?

AI-powered deployment platforms are abstracting away the manual setup and decision-making
AI-driven deployment uses machine learning models to make smart decisions in the deployment pipeline
An AI-powered platform automatically scans the repository, builds, deploys, and monitors the application
AI handling deployment reduces errors and speeds up iteration, making it beneficial for indie developers and startups

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Openstack

326

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Streamlining OpenStack Upgrades: A Case Study of Indiana University’s Efficient Upgrade Strategy

Indiana University (IU) has streamlined OpenStack upgrades through strategic planning and structured approach, highlighting the importance of efficiency in large deployments.
IU's OpenStack upgrade path has evolved over the years, facing challenges in managing a growing environment through various release cycles.
Challenges during upgrades included database load, message bus load, hypervisor upgrades, data migrations, and network agent outages.
IU adopted SLURP to reduce major OpenStack upgrades, resulting in faster upgrades, minimized outages, and improved time efficiency.
Scheduling upgrades during off-peak times and aligning them with quieter periods improved user experience and reduced disruptions.
The evolution of OpenStack upgrades at IU has transformed the process from a multi-day ordeal to routine maintenance, enhancing operational efficiency and user satisfaction.
SLURP has enabled IU to conduct upgrades more seamlessly, minimize maintenance windows, and offer users a stable platform with fewer disruptions.
The structured upgrade process at IU serves as an example of how strategic planning and reduced upgrade cadence can enhance cloud environments.
By leveraging SLURP and efficient strategies, IU has shifted OpenStack upgrades from disruptive events to well-planned routine maintenance tasks.
The experience of IU demonstrates the benefits of a more efficient upgrade strategy in large-scale OpenStack deployments, leading to improved operational efficiency and user satisfaction.

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Dev

154

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How I save $$$ by self-hosting these 5 open source tools

The article discusses how self-hosting open source tools can help save money, especially for bootstrapped startups and freelance projects.
By self-hosting tools like Plunk for email, n8n for automation, Postgres for databases, Nextcloud for file sharing, and Redis for caching, the author managed to save around €150 per month.
Plunk serves as a self-hosted email platform, offering savings compared to popular email marketing tools like Mailchimp or Customer.io.
Using n8n for automation tasks provides unlimited executions and cost savings compared to n8n Cloud's monthly pricing.
Self-hosting Postgres for database needs, instead of using managed services like Timescale Cloud, can lead to significant savings and more control over data.
Nextcloud is favored for file sharing and data privacy concerns, offering an alternative to services like Google Drive or Dropbox.
Self-hosting Redis as a cache solution can cut costs compared to Redis Cloud, particularly for smaller workloads.
The article provides an overview of monthly savings by self-hosting these tools, highlighting the significant difference in costs compared to SaaS options.
Considerations for deciding on self-hosting based on time and financial factors are discussed, emphasizing starting with low-risk tools before critical infrastructure.
The author attributes affordable self-hosting to the Docker hosting platform called Sliplane, which charges per server and allows hosting multiple services economically.

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Dev

364

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Running WebAssembly with ContainerD + CRUN + WasmEdge

WebAssembly (Wasm) is now being used in the cloud along with container runtimes like containerd, crun, and Kubernetes.
To begin, install WasmEdge, a fast Wasm runtime optimized for cloud-native environments.
Set up ContainerD, CRUN, and Kubernetes using a one-liner script that handles the installation and configuration.
Run a Wasm container in Kubernetes by deploying a Wasm image and testing it with an HTTP service.

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Hackernoon

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Meet the HackerNoon Top Writers - Satisfying the Curiosity Crunch: My Tech Writing Expedition

The author, a Staff Software Engineer at Twilio, brings a decade of technical expertise and leadership in building products at scale.
Writing started as a way to clarify complex flows during work, leading to drafting documents on systems and technologies.
Technology has revolutionized the author's writing process, utilizing AI tools for brainstorming, Grammarly for refinement, and focusing on creativity.
The author has written over 10 articles, with a significant achievement of being named a Top 10 Cloud Writer on HackerNoon.
Creative process involves Notion workspace for main points, research, rough draft with personal insights, and multiple refinements before submission.
Favorite article by the author is about how WebSockets power real-time apps.
Discovered HackerNoon 6-7 years ago, impressed by valuable insights and decided to become a writer with supportive editors.
Learned the importance of clarity, empathy, research, iteration, and consistency in writing, leading to personal growth as an engineer and communicator.
Writing for HackerNoon has been rewarding, challenging the author to share authentic insights and connect with a supportive community.
The author looks forward to new discoveries and articles, grateful for the growth and support experienced.

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Dev

267

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Setting up a Kubernetes cluster with Kubeadm and Containerd

This tutorial outlines the process of setting up a Kubernetes cluster using Kubeadm and Containerd on an Ubuntu server 24.04 LTS.
Ensure IPv4 packet forwarding is enabled to allow the network to function correctly.
Install necessary dependencies like ca-certificates, curl, and apt-transport-https.
Download containerd.io by adding Docker repository and installing it on the system.
Configure systemd cgroup driver for containerd to ensure proper execution.
Install kubeadm, kubelet, and kubectl, followed by enabling the kubelet service.
On the control plane node, initialize the Kubernetes control plane with a specified network CIDR.
Create a non-root user, set up the Kubernetes config file, and deploy a Container Network Interface (CNI) like Calico operator.
For worker nodes, join the cluster using the kubeadm join command and assign the worker role.
Check the worker node status and label the node to ensure it has obtained the worker role.

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Dev

163

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All-in-One Mobile Recharge Software Solutions for DTH, Postpaid, Prepaid, and Utility Payments

The demand for all-in-one mobile recharge software solutions is increasing in India's digital payment ecosystem, particularly in Tier 2, 3 cities, and rural areas.
Investing in feature-rich mobile recharge software solutions is seen as crucial for sustainable business growth by entrepreneurs and fintech startups.
All-in-one mobile recharge software integrates various services like mobile recharges, DTH recharges, and utility bill payments into a single platform.
These solutions simplify operations, save time for users and agents, enhance revenue, and enable the integration of various fintech modules.
Key features of reliable all-in-one recharge software include multi-operator integration, prepaid/postpaid recharge, DTH recharge system, utility bill payments, and commission management.
Other essential features include white-label support, multi-user role management, wallet and ledger system, mobile and web access, and 24/7 API monitoring and reporting.
noblewebstudio is a prominent provider of multi recharge software solutions in India known for custom solutions, API integrations, and real-time support.
When choosing all-in-one recharge software, businesses should consider services supported, custom branding options, commission flexibility, tech support, and updates.
Launching an all-in-one recharge business offers benefits like diversified revenue streams, higher customer retention, fast ROI, low operational costs, and agent empowerment.
By using multi recharge software, rural retailers and CSCs in India are promoting financial inclusion, digital literacy, and rural entrepreneurship.

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Itrevolution

108

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Implementing at Scale: Strategies for Enterprise-Wide GenAI Adoption

Scaling GenAI adoption in enterprises requires a strategic vision aligning AI initiatives with business objectives.
High-value use cases focus on enhancing employee productivity, improving business operations, and enhancing product and customer experiences.
Successful organizations follow a phased implementation strategy, starting with focused pilots and scaling gradually.
Technical infrastructure for GenAI initiatives includes centralized services, integration with enterprise systems, and monitoring mechanisms.
Challenges in scaling GenAI adoption include cost management, talent development, and managing technical evolution and debt.
Measuring success requires metrics related to productivity, operations, business impact, and adoption rates.
Real-world success stories include Google's developer experience, Moderna's enterprise-wide deployment, and Adobe's governance-led approach.
Enterprise-wide GenAI implementation is a transformational journey that requires a holistic approach to drive sustainable business value.
Organizations must view GenAI as a fundamental transformation of work processes, not just an isolated technology initiative.
Adopting the strategies outlined can help enterprises accelerate GenAI adoption while effectively managing risks.

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Dev

213

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From Zero to EKS and Hybrid-Nodes —Part 3: Setting up the NLB, Ingress, and Services on a Hybrid EKS Infrastructure

Setting up Network Load Balancer (NLB), Ingress, and Services on a hybrid EKS infrastructure involves configuring routing rules, disabling kube-proxy on hybrid nodes, updating Cilium configuration, verifying Cilium agents, configuring static routes on the VPN router, and installing the Load Balancer Controller.
To enable communication between pods on AWS-managed and hybrid nodes, specific routing rules are configured on the VPN gateway/router, replacing kube-proxy functionality with Cilium and updating Cilium configuration.
Verification includes checking cilium-agent pods running on hybrid nodes and no kube-proxy pods present, configuring static routes based on subnet allocation, and installing the AWS Load Balancer Controller using Terraform.
Deployment of a demo app with 6 replicas helps observe pod distribution, setting up Ingress, Service, and Load Balancer Controller, and testing round-robin behavior through curl commands.
Pricing overview: while hybrid nodes do not incur EC2 costs, expenses include EKS control plane fees, data transfer, and hybrid node usage costs based on vCPU-hours.
In conclusion, running a hybrid EKS environment combining AWS-managed and on-prem nodes is feasible, providing flexibility for organizations with existing infrastructure or specific compliance needs, and laying a foundation for more advanced setups in production scenarios.

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Medium

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How & Why I’m Self-Hosting My Own Cloud Services

The author outlines their hands-on learning approach to technology and decision to self-host cloud services by repurposing an old gaming computer with Ubuntu and Kubernetes.
Concerns about data privacy, triggered by government actions, motivated the author to host their own infrastructure for control and security.
The author discusses their use cases for self-hosting and mentions selecting specific tools that meet their requirements.
Despite Kubernetes being overkill for a single user, the author uses it for learning and maintenance purposes.
The deployment includes using NFS on Synology for persistent volumes, implementing nginx for load balancing, and configuring ingress endpoints.
File Browser is utilized for file browsing, and BookStack is chosen for its ease of use as a markdown-based wiki system.
PiGallery is migrated to the Kubernetes environment for organizing photos, and paperless-ngx is set up for managing documents.
The author highlights the flexibility of self-hosting, enabling customization and adaptability to various needs.
Overall, the author's self-hosted environment allows them to control and optimize their infrastructure according to their preferences and requirements.
Through hands-on deployment and management, the author gains practical insights into Kubernetes, storage solutions, and service migration.

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Hackernoon

313

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What No One Tells You About Running Docker in Production

Most production Docker images are bloated. Use multi-stage builds and start from minimal base images to reduce image size.
By default, Docker containers run as root. Add a non-root user inside your image and avoid mounting the Docker socket unless necessary.
If your .dockerignore is missing or incomplete, Docker might be copying your entire repo into the image. Use .dockerignore like your .gitignore to avoid unnecessary copying.
In production, improper volume usage can break statelessness, create permission issues, and introduce state inconsistency between replicas. Only mount named volumes with a clear purpose and make volumes read-only where possible.

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Dev

385

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Cut CI/CD Costs by 77% & 2x Deployment Speed with GitHub Actions on EKS Auto

Running Github Actions Self Hosted Runners on EKS Auto with AWS Heroes Arshad Zackeriya and Jones Zachariah Noel resulted in impressive performance, speed, and cost savings, making it a scalable enterprise solution.
This solution is adaptable across different cloud platforms like Azure and Google, extending its applicability.
The article delves into the comparison between running GitHub Actions on default free machines versus Large hosted runners, leading to the implementation of self-hosted runners on EKS Auto.
It explains the concept of Self Hosted Runners and Runner Scale Sets, with detailed insights on their configuration and management.
The Terraform code walkthrough provides a comprehensive guide on deploying auto-scaling GitHub Actions self-hosted runners on Amazon EKS using GitHub's Actions Runner Controller.
The tutorial covers setting up infrastructure, configuring EKS Auto with Karpenter for auto-scaling, deploying Actions Runner Controller, handling GitHub authentication, and managing namespaces.
It outlines the benefits of this approach, including cost efficiency, flexibility, scalability, security, and reliability.
Performance and speed comparisons between 8 Core CPU and the EKS Auto solution favored the latter, showcasing stable performance throughout.
In terms of cost savings, the implementation on EKS Auto outperformed Github's large hosted runners, yielding significant savings of 76.7% to 84%.
From a solutions architect perspective, the article emphasizes how combining Amazon EKS Auto and GitHub Actions Runner Controller aligns with the AWS Well-Architected Framework, offering operational excellence, security, reliability, cost optimization, and sustainability.
The solution provides a scalable and cost-effective platform for CI/CD pipelines, optimizing performance efficiency, and reducing operational overhead.

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Dev

376

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Managing Docker Images and Containers: A Comprehensive Guide

Docker is widely used for containerization, enabling efficient application deployment.
This guide covers essential Docker commands and concepts related to managing images and containers.
Topics include discovering available options, running containers in detached mode, viewing logs, handling file transfers, and naming/tagging containers and images.
By understanding these concepts, managing Docker images and containers becomes effortless.

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Medium

158

Best Smartphones for Digital Artists: Stylus-Friendly Picks

Display quality and stylus technology are essential features for smartphones ideal for digital art.
Top stylus-friendly smartphones for digital artists include Samsung Galaxy S25 Ultra, Samsung Galaxy Z Fold 6, Motorola Moto G Stylus 2025, Microsoft Surface Duo 2, and TCL Stylus 5G.
The article also highlights best apps for digital art on smartphones and provides tips for choosing the right device.
The Samsung Galaxy S25 Ultra is recommended for professionals, while budget-friendly options include Motorola Moto G Stylus 2025.

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