From 08d19c815844be1ddfa7566390a988de075c4dff Mon Sep 17 00:00:00 2001
From: admin <alec@bryanmail.net>
Date: Thu, 18 Jun 2026 22:44:41 -0700
Subject: [PATCH] Add MTU migration Phase 2 script

---
 scripts/network/mtu_phase2.sh | 48 +++++++++++++++++++++++++++++++++++
 1 file changed, 48 insertions(+)
 create mode 100644 scripts/network/mtu_phase2.sh

diff --git a/scripts/network/mtu_phase2.sh b/scripts/network/mtu_phase2.sh
new file mode 100644
index 0000000..345b4b6
--- /dev/null
+++ b/scripts/network/mtu_phase2.sh
@@ -0,0 +1,48 @@
+#!/bin/bash
+# Phase 2 — Recreate overlay networks + redeploy stacks
+# Only runs on whichever node holds swarm leadership
+# Must wait for all 3 nodes to complete phase1 first
+LOG=/volume1/docker/mtu_migration/phase2.log
+exec >> "$LOG" 2>&1
+echo "[$(date)] Phase2 starting — waiting for all nodes phase1.done"
+TIMEOUT=600
+ELAPSED=0
+while true; do
+  ALL_DONE=true
+  for node in docker-2 docker-3; do
+    [ ! -f "/volume1/docker/mtu_migration/${node}_phase1.done" ] && ALL_DONE=false
+  done
+  $ALL_DONE && break
+  sleep 5; ELAPSED=$((ELAPSED+5))
+  if [ "$ELAPSED" -ge "$TIMEOUT" ]; then
+    echo "[$(date)] TIMEOUT waiting for phase1 — aborting phase2"
+    exit 1
+  fi
+done
+echo "[$(date)] All phase1 done files present — checking swarm quorum"
+SWARM_READY=false
+for i in $(seq 1 24); do
+  STATUS=$(docker node ls 2>/dev/null | grep -c "Ready") 
+  echo "[$(date)] Swarm ready nodes: $STATUS"
+  [ "$STATUS" -ge 2 ] && SWARM_READY=true && break
+  sleep 10
+done
+if ! $SWARM_READY; then
+  echo "[$(date)] Swarm not ready after 4min — aborting phase2"
+  exit 1
+fi
+echo "[$(date)] Swarm healthy — redeploying stacks"
+CD=/volume1/docker/compose-files
+for stack in traefik auth postgresql; do
+  f="$CD/${stack}.yaml"
+  [ -f "$f" ] || { echo "[$(date)] WARN: $f not found, skipping"; continue; }
+  echo "[$(date)] Redeploying stack: $stack"
+  docker stack deploy -c "$f" "$stack" 2>&1
+  echo "[$(date)] $stack deploy exit: $?"
+  sleep 5
+done
+echo "[$(date)] Verifying overlay MTUs:"
+docker network ls --filter driver=overlay -q | \
+  xargs docker network inspect --format '{{.Name}} {{json .Options}}' 2>/dev/null
+echo "[$(date)] Phase2 COMPLETE"
+touch /volume1/docker/mtu_migration/phase2.done