feat(post-install): rebuild Log2RAM with the journal and task logs kept on disk

scripts/global/log2ram_watch.sh

@@ -0,0 +1,22 @@
+#!/bin/bash
+# ==========================================================
+# ProxMenux - Keeps the Log2RAM folder from filling up
+# ==========================================================
+# Past 85% of its size, the logs in RAM are rotated and the ones just rotated
+# are compressed at once, then everything is written to disk. Rules with
+# delaycompress, such as the one of pveproxy, would otherwise leave the largest
+# log uncompressed until the next day. No log is emptied.
+# ==========================================================
+
+PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
+
+mountpoint -q /var/log || exit 0
+used="$(df --output=pcent /var/log 2>/dev/null | tail -1 | tr -dc '0-9')"
+[ "${used:-0}" -ge 85 ] || exit 0
+
+exec 9>/run/proxmenux-log2ram-watch.lock || exit 0
+flock -n 9 || exit 0
+
+logrotate -f /etc/logrotate.conf >/dev/null 2>&1 || true
+find /var/log -xdev -type f -name '*.1' -exec gzip -9 -- {} + 2>/dev/null || true
+systemctl reload log2ram >/dev/null 2>&1 || true