Lightning Talk: Where Did All My IPs Go?
Lightningat KubeCon + CloudNativeCon North America 2022 · on Tuesday, 2022-10-25· at 18:05· Grand Riverview Ballroom AB·
summary
Kubernetes needs at least three IP blocks — for pods, nodes, and services — and historic practice of assigning one large contiguous CIDR causes fragmentation and painful rebuilds. SIG‑network implements dual‑stack IPv4/IPv6 and multiple cluster CIDRs (discontiguous pod CIDRs) so clusters can grow without recreating them, and upcoming KEPs add multiple service CIDRs and reserved static vs dynamic service IP ranges. Best practice becomes start with smaller allocations and add CIDRs dynamically.
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chapters (4)
- 0:00Introduction
- 1:00IP requirements for Kubernetes clusters
- 2:13How have we been making it easier
- 4:20Where will all my IPS go
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