traefik: fix corrupted logrotate wrapper script (was double base64-encoded)

traefik/logrotate/traefik-logrotate.sh

@@ -1 +1,29 @@
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+#!/usr/bin/env bash
+# Wrapper invoked by cron on docker-1/docker-2/docker-3 to rotate the shared
+# Traefik access/error logs (see traefik-logs.conf for the "full why").
+#
+# Because /volume1/docker/traefik/logs is the SAME physical CephFS path on
+# all three nodes, and cron on all three nodes runs this independently, we
+# use a shared flock (also on the CephFS mount, so it's visible cluster-wide)
+# to guarantee only one node actually executes logrotate at a time, and a
+# SHARED state file so whichever node runs it knows the true last-rotated
+# time regardless of which node rotated it last. If a node is down, the
+# other two still cover the schedule -- none of this relies on a specific
+# node being up.
+set -euo pipefail
+
+LOCK_DIR="/volume1/docker/traefik/logrotate-state"
+LOCK_FILE="$LOCK_DIR/rotate.lock"
+STATE_FILE="$LOCK_DIR/status"
+CONF_FILE="/etc/logrotate.d/traefik-logs"
+
+mkdir -p "$LOCK_DIR"
+touch "$STATE_FILE"
+
+exec 200>"$LOCK_FILE"
+if ! flock -n 200; then
+  # Another node already holds the lock this cycle -- normal, not an error.
+  exit 0
+fi
+
+/usr/sbin/logrotate -s "$STATE_FILE" "$CONF_FILE"