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spinifex/tests
Josh Siviour 554c5d96c7 feat(elbv2): NLB L4 data plane on nginx stream + UI parity (#295)
* feat(elbv2): NLB L4 data plane on nginx stream (mulga-siv-952)

Network load balancers render an nginx `stream` config (TCP/UDP/TLS/
TCP_UDP) instead of HAProxy, which cannot load-balance UDP in any
release. The gateway tags GetLBConfig with Engine=nginx; the LB agent
dispatches to the nginx engine (config/pid/cert paths + reload) and
skips HAProxy stats polling. ALB stays on HAProxy. nginx is added to
the microvm image.

* docs(elbv2): note NLB runs nginx stream, ALB runs HAProxy (mulga-siv-952)

* fix(elbv2): load nginx stream module for NLB data plane

Alpine's `nginx` apk is built without the stream module — it ships
separately as `nginx-mod-stream`. Without it, the generated NLB config
fails `nginx -t` with [emerg] unknown directive "stream", so the agent
never applies it. Add the package to the microvm image and emit a
`load_module .../ngx_stream_module.so;` directive at the top of the
generated config.

* fix(elbv2-ui): allow single-subnet LB + full NLB protocols in listener edit

Create-LB form required min 2 subnets while the CLI/backend accept 1;
relax to min(1) to match. Listener add/edit only offered HTTP/HTTPS —
add the NLB protocol set (TCP, UDP, TLS, TCP_UDP), driven by LB type,
with cert/ssl-policy fields gated on secure protocols (HTTPS/TLS).

* feat(elbv2): active target health checks for nginx NLBs

nginx stream has no active upstream probing, so NLB targets never
advanced past initial — DescribeTargetHealth stayed initial forever and
WaitForTargetsHealthy timed out for every NLB. GetLBConfig now delivers
per-target HealthTarget specs (daemon-computed server name, probe
address, protocol/path) for network LBs; the lb-agent probes each target
every tick (TCP dial or HTTP/HTTPS GET) and reports UP/DOWN via the
existing heartbeat path, so the daemon's threshold hysteresis advances
targets to healthy. ALBs are unchanged (HAProxy stats).

Adds an Internal_NLB_UDP e2e suite gating on WaitForTargetsHealthy plus a
UDP datagram round-trip through the VIP.
2026-06-05 00:11:51 +10:00
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