neiam /waxx

waxx

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cluster

ffe9912 · gmorell · 2026-05-21 05:10

6 files +46 -26

Files changed

modified app.yml

+6 −6

@@ -155,9 +155,9 @@ spec:

155	155	name: waxx
156	156	---
157	157	# Headless service so libcluster's Kubernetes strategy can resolve all
158		−# pod IPs for peer discovery. Pods discover siblings via the endpoints
159		−# selector + namespace + service name in runtime.exs; epmd-less long-
160		−# name distribution does the actual node connection.
	158	+# pod IPs for peer discovery. Pods discover siblings via this service's
	159	+# Endpoints; the actual Erlang distribution traffic flows pod-IP →
	160	+# pod-IP (4369 = epmd, 9100 = inet_dist pinned in rel/env.sh.eex).
161	161	apiVersion: v1
162	162	kind: Service
163	163	metadata:

@@ -167,9 +167,9 @@ spec:

167	167	clusterIP: None
168	168	publishNotReadyAddresses: true
169	169	ports:
170		− - port: 4000
171		− targetPort: 4000
172		− protocol: TCP
	170	+ - { name: http, port: 4000, targetPort: 4000, protocol: TCP }
	171	+ - { name: epmd, port: 4369, targetPort: 4369, protocol: TCP }
	172	+ - { name: dist, port: 9100, targetPort: 9100, protocol: TCP }
173	173	name: http
174	174	selector:
175	175	name: waxx

modified assets/css/app.css

+3 −3

@@ -24,7 +24,7 @@

24	24	@plugin "../vendor/daisyui-theme" {
25	25	name: "dark";
26	26	default: false;
27		− prefersdark: true;
	27	+ prefersdark: false;
28	28	color-scheme: "dark";
29	29	--color-base-100: oklch(30.33% 0.016 252.42);
30	30	--color-base-200: oklch(25.26% 0.014 253.1);

@@ -58,7 +58,7 @@

58	58
59	59	@plugin "../vendor/daisyui-theme" {
60	60	name: "light";
61		− default: true;
	61	+ default: false;
62	62	prefersdark: false;
63	63	color-scheme: "light";
64	64	--color-base-100: oklch(98% 0 0);

@@ -313,7 +313,7 @@

313	313
314	314	@plugin "../vendor/daisyui-theme" {
315	315	name: "blueprint";
316		− default: false;
	316	+ default: true;
317	317	prefersdark: false;
318	318	color-scheme: "dark";
319	319	--color-base-100: oklch(28% 0.12 252);

modified rel/env.sh.eex

+37 −17

@@ -1,19 +1,39 @@

1	1	#!/bin/sh
2		−
3		−# Long-name distribution so libcluster can reach this node from peers
4		−# and Phoenix.PubSub can fan out across the cluster.
5		−#
6		−# POD_IP is injected by the deployment from status.podIP. RELEASE_COOKIE
7		−# comes from the elixir-args secret so every replica agrees on the
8		−# Erlang cookie.
	2	+# Sourced by every `bin/waxx <command>` invocation. Only `start` and
	3	+# `daemon` need long-name distribution — they're the long-lived
	4	+# server nodes peer pods talk to. `remote`, `eval`, and `rpc` use
	5	+# unique auto-generated short names so they don't fight the running
	6	+# server for the `waxx@<pod-ip>` slot in epmd. Setting RELEASE_NODE for
	7	+# those would cause an epmd name collision: the new (short-lived)
	8	+# BEAM registers under the same name, evicts the running server from
	9	+# epmd, and now peer pods can't find it via dist any more — which
	10	+# typically takes the running pod down on its next inbound connect.
9	11	#
10		−# Only enable name-distribution when POD_IP is actually populated —
11		−# otherwise RELEASE_NODE becomes "waxx@" and the BEAM aborts before
12		−# Logger attaches, producing only a generic init crash.
13		−if [ -n "${POD_IP}" ]; then
14		− echo "[env.sh] starting with name distribution as waxx@${POD_IP}" >&2
15		− export RELEASE_DISTRIBUTION=name
16		− export RELEASE_NODE="waxx@${POD_IP}"
17		−else
18		− echo "[env.sh] POD_IP is empty — falling back to local-only sname distribution" >&2
19		−fi
	12	+# POD_IP comes from the deployment's downward API. RELEASE_COOKIE
	13	+# comes from the elixir-args / waxx-secrets secret so every replica
	14	+# agrees on the Erlang cookie.
	15	+case ${RELEASE_COMMAND:-} in
	16	+ start\|daemon)
	17	+ if [ -n "${POD_IP:-}" ]; then
	18	+ echo "[env.sh] starting with name distribution as waxx@${POD_IP}" >&2
	19	+ export RELEASE_DISTRIBUTION=name
	20	+ export RELEASE_NODE="waxx@${POD_IP}"
	21	+
	22	+ # Pin the inet_dist listener to a known port so it's predictable
	23	+ # from peers and routable through any future NetworkPolicy.
	24	+ # Without this BEAM picks a random ephemeral port each boot,
	25	+ # which works under default k8s pod-to-pod TCP but breaks the
	26	+ # moment a policy locks the namespace down.
	27	+ export ELIXIR_ERL_OPTIONS="${ELIXIR_ERL_OPTIONS:-} -kernel inet_dist_listen_min 9100 inet_dist_listen_max 9100"
	28	+ else
	29	+ echo "[env.sh] POD_IP is empty — falling back to local-only sname distribution" >&2
	30	+ fi
	31	+ ;;
	32	+ *)
	33	+ # remote / eval / rpc — let mix release auto-pick a unique short
	34	+ # name (`rem-<rand>@127.0.0.1`) and use `-remsh` to attach by the
	35	+ # running node's long name (which it reads from this same script's
	36	+ # state under start, baked into the release at build).
	37	+ :
	38	+ ;;
	39	+esac

Parents: 66113d8