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

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Good article about scaning vulnerabilities
https://semaphoreci.com/blog/govulncheck
The article discusses how to use eBPF (extended Berkeley Packet Filter) to collect telemetry data from a service without code changes and without requesting engineering efforts. eBPF provides the ability to execute programs on the Operational System Kernel, extending the OS capabilities and leveraging the kernel's privileged ability to control the system. The author explains how to use Pixie, an open-source observability solution for Kubernetes applications that uses eBPF to collect telemetry data automatically. Pixie offers features such as network monitoring, database query profiling, continuous application profiling, and Kafka monitoring. However, Pixie has two drawbacks, long-term data retention, and a lack of support for ARM architectures. The article concludes by suggesting other tools that offer similar features to Pixie, such as Cilium Hubble.

https://itnext.io/observability-strategies-to-not-overload-engineering-teams-ebpf-b034b26d7f1d
kubectl foreach is a command-line tool that enables running kubectl commands on one or more contexts (clusters) in parallel. Users can match context names from kubeconfig using patterns such as exact names and regular expressions. The tool offers options for limiting parallel executions, disabling confirmation prompts, and replacing values in kubectl arguments with context names. kubectl foreach can be installed using Krew kubectl plugin manager and used to query pods and run commands on multiple contexts at the same time. The tool is not intended for deploying workloads to clusters or using programmatically yet.

https://github.com/ahmetb/kubectl-foreach