DevOps & SRE notes – Telegram
DevOps & SRE notes
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Helpful articles and tools for DevOps&SRE

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The article argues that software teams should focus on enablement rather than productivity of individual developers. It suggests measuring outcomes that satisfy the customers, the developers, and the business, and using platform engineering to facilitate communication and collaboration.
https://thenewstack.io/software-delivery-enablement-not-developer-productivity/
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SigNoz is an open-source APM. It helps developers monitor their applications & troubleshoot problems, an open-source alternative to DataDog, NewRelic, etc. 🔥 🖥. 👉 Open source Application Performance Monitoring (APM) & Observability tool

https://github.com/signoz/signoz
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In this article, I've outlined my experiences and key takeaways from working with Terraform. Instead of focusing on deep technical details, I've shared practical advice to help manage Terraform effectively. These tips are designed to save time and prevent potential disasters, making your journey with Terraform smoother.
https://dev.to/tutunak/terraform-expertise-valuable-takeaways-from-years-in-production-2pb1
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The article describes a method of migrating etcd, a distributed key-value store, from one Kubernetes cluster to another without downtime¹[1]. The method involves creating load balancers and static DNS records for the etcd nodes, adding new nodes to the existing cluster, switching the clients to the new endpoints, and removing the old nodes. The article also provides some tips on reducing the etcd database size and avoiding quorum loss.

Source: Conversation with Bing, 10/13/2023
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https://blog.palark.com/etcd-in-kubernetes-migration-tutorial/
The blog post explains how to use ArgoCD, a GitOps tool, to automate the continuous delivery/deployment phase of a CI/CD pipeline with Jenkins on Kubernetes. It covers the installation, configuration, and usage of ArgoCD, as well as its integration with GitHub, Vault, and custom health checks

https://medium.com/@emrah-t/extending-your-ci-cd-pipeline-with-gitops-an-end-to-end-automation-with-argocd-and-jenkins-on-f6c39b3dcb21
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The blog post is a hands-on guide to building a basic Docker-like environment using Linux namespaces, cgroups, and chroot. It shows how to create an isolated container with its own file system, network, and resource limits. It also explains the concepts and commands behind each step of the process.
https://akashrajpurohit.com/blog/build-your-own-docker-with-linux-namespaces-cgroups-and-chroot-handson-guide/
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The blog post is a hands-on guide to building a basic Docker-like environment using Linux namespaces, cgroups, and chroot12. It shows how to create an isolated container with its own file system, network, and resource limits. It also explains the concepts and commands behind each step of the process.
https://qovery.com/blog/the-cost-of-upgrading-hundreds-of-kubernetes-clusters
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The article describes how DoorDash built an eBPF-powered agent called BPFAgent to monitor network traffic within their Kubernetes clusters. The article explains the benefits, challenges, and use cases of using eBPF probes to capture and enrich network events at the kernel level.


https://doordash.engineering/2023/08/15/bpfagent-ebpf-for-monitoring-at-doordash/
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