one example at a time

Patterns

Three folders. Apply one, understand it, destroy it, then move on.

1 · Baseline Prerequisites
Two HA patterns for NTRIP Path A: clients via Route 53 alias to one shared NLB with blue and green EC2 casters. Path B: clients via Route 53 failover to PRIMARY Auckland or SECONDARY Sydney NLB and caster. Path A / Dual-AZ L4 shared NLB / ~20-40s NTRIP :2101 Route 53 alias VIP NLB TCP health Blue / AZ-a Green / AZ-b relay pull Path B / Multi-region DNS AKL + SYD / DNS TTL 1-3+ min same VIP Route 53 failover PRIMARY AKL SECONDARY SYD both pull

EC2 + NLB bill while a stack is up. Tear down that folder only — leave field VPCs and hosted zones alone.

Chapters

1 Baseline relay_iport 2 Dual-AZ relay_iport_ha 3 Multi-region relay_iport_ha_mr

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