fix: harden fck-nat bootstrap against IMDS/interface race#16
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leonardosul wants to merge 2 commits intomainfrom
Closed
fix: harden fck-nat bootstrap against IMDS/interface race#16leonardosul wants to merge 2 commits intomainfrom
leonardosul wants to merge 2 commits intomainfrom
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Summary
user_datathat installs a small on-instance guard (nat-zero-fck-nat-guard)fck-nat.service, and verifiesiptablesSNAT MASQUERADE exists on the resolved public interfaceCONFIG_VERSIONso existing NATs roll forward via normal reconciliationWhy
Observed failure mode in
us-east-2ahad NAT instancerunningwith EIP attached while fck-nat failed during boot (IMDSunreachable, empty interface, missing SNAT rule). This change hardens startup locally on the instance and ensures SNAT is actually present before guard success.Validation
terraform fmtterraform fmt -checkterraform validatecd cmd/lambda && go test -run '^$' ./...cd tests/integration && go test -run '^$' ./...(Full live AWS integration test not run in this pass.)