Taming the Linux Distribution Sprawl: A Journey to Standardization and...
summary
A company narrows dozens of distributions to two hardened images — Amazon Linux 2 and CentOS 7.9 — selected because they are RPM‑based, prioritize stability and offer multi‑year support; teams migrate via small PRs using Packer and Terraform, inventory with Datadog and Sourcegraph, and run platform engineers on‑call for rollbacks. Large clusters get priority, many services containerize into Kubernetes, CVE‑reporting agents are baked into base images, and results are fewer unsupported hosts, more consistent sysctl/tooling, and a path toward Amazon Linux 2023 with a five‑year EOL.
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chapters (18)
- 0:00Introduction
- 0:24Quantcast infrastructure scale
- 1:26AWS migration lack of standardization
- 2:08Operational challenges from Linux diversity
- 3:11Criteria for Linux distribution selection
- 3:55Recommendation: Amazon Linux 2 & CentOS 7.9
- 4:40Engineer-driven migration during pandemic
- 5:44Testing recommendations discovery
- 7:30Aggressive migration with OKRs
- 8:31Bottlenecks in host identification and upgrades
- 9:57Prioritizing clusters with data metrics
- 10:42Standardized deployment with Packer & Terraform
- 11:25Tools for infrastructure management
- 12:06Pandemic challenges
- 13:30Containerization and Kubernetes benefits
- 13:54Security and consistency improvements
- 14:36Future plans with Amazon Linux 2023
- 14:57Key takeaways
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