DevOps drawer – Telegram
DevOps drawer
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Curated DevOps resources from trustworthy sources.
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https://2023.nixcon.org/recordings/

all video recordings from the last NixCON 2023, Darmstadt, DE
http://abstraction.blog/2023/06/13/cloud-alerting-strategy

Alerting is an essential step of monitoring. Monitoring provides you visibility into the health of your systems. The benefits of alerting are :
• An alert can contain enough contextual information to help us quickly get started on diagnostic activities.
• Alerting can be used to invoke remediation functions such as autoscaling.
• Alerts can also enable cost-awareness by watching budgets and limits.
https://goteleport.com/blog/kubernetes-audit-logging/

In this guide, you’ll learn the basics of Kubernetes audit logging, as well as advice for how to set it up and choose an appropriate backend. You’ll also learn about best practices for getting the most value from the processes.
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paperless-ngx

A community-supported supercharged version of paperless: scan, index and archive all your physical documents


https://github.com/paperless-ngx/paperless-ngx
Feature Flags vs. Feature Management: A Technical Deep Dive for SREs

https://www.cloudbees.com/blog/feature-flag-vs-feature-management
kubeseal-convert

A tool for importing secrets from a pre-existing secrets management systems (e.g. Vault, Secrets Manager) into a SealedSecret.


https://github.com/EladLeev/kubeseal-convert
krr

Robusta KRR (Kubernetes Resource Recommender) is a CLI tool for optimizing resource allocation in Kubernetes clusters. It gathers pod usage data from Prometheus and recommends requests and limits for CPU and memory. This reduces costs and improves performance.


https://github.com/robusta-dev/krr
Understand how graceful shutdown can achieve zero downtime during k8s rolling update

https://dev.to/yutaroyamanaka/understand-how-graceful-shutdown-can-achieve-zero-downtime-during-k8s-rolling-update-15eh
In modern cloud-native environments, Kafka consumers are increasingly deployed within Kubernetes. This setup offers benefits in scalability and deployment ease but also introduces the need for sophisticated scaling strategies that can adapt to the volatile nature of Kafka’s data streams.


https://kedify.io/resources/blog/keda-kafka-improve-performance-by-62-15-at-peak-loads/
How Wise reduced AWS RDS maintenance downtimes from 10 minutes to 100 milliseconds is an interesting story for those who do DB operations.

From time to time, it's necessary to apply changes that require downtime. However, it's unacceptable to have long "maintenance windows" nowadays. So, one has to be creative.

#dba #mariadb
dotenvx

a better dotenv–from the creator of `dotenv`


https://github.com/dotenvx/dotenvx
Kafka 101

Originally developed in LinkedIn during 2011, Apache Kafka is one of the most popular open-source Apache projects out there. So far it has had a total of 24 notable releases and most intriguingly, its code base has grown at an average rate of 24% throughout each of those releases.


https://highscalability.com/unnoscriptd-2
Becoming a Senior Site Reliability Engineer: A Guide to Upskilling

Learn how to upskill yourself to become senior site reliability engineer


https://reliabilityengineering.substack.com/p/becoming-a-senior-site-reliability
Tetragon is a flexible Kubernetes-aware security observability and runtime enforcement tool that applies policy and filtering directly with eBPF, allowing for reduced observation overhead, tracking of any process, and real-time enforcement of policies


https://tetragon.io/
In this article, the Exness SOC (Security Operations Center) team shares approaches to monitoring and detecting threats in the K8s environment


https://scribe.rip/exness-blog/threat-detection-in-the-k8s-environment-d5fdcd88a094
GPU Virtualization in K8s: Challenges and State of the Art

Kubernetes schedules GPU workloads by assigning a whole device to a single job exclusively. This one-to-one relationship leads to massive GPU underutilization, especially for interactive jobs, characterized by significant idle periods and infrequent bursts of heavy GPU usage. Current solutions enable GPU sharing by statically assigning a fixed slice of GPU memory to each co-located job. These solutions are not suitable for interactive scenarios since the number of co-located jobs is limited by the size of physical GPU memory. Consequently, users must know the GPU memory demand of their jobs before submitting them for execution, which is impractical.


https://www.arrikto.com/blog/gpu-virtualization-in-k8s-challenges-and-state-of-the-art
Kubernetes Events — News feed of your cluster

Understand Kubernetes Events and learn to use kubectl events to monitor and troubleshoot your cluster’s issues effectively.


https://decisivedevops.com/kubernetes-events-news-feed-of-your-kubernetes-cluster-826e08892d7a