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routeros-scripts/doc/log-forward.md
Christian Hesse 5932586ee4 introduce mod/notification-ntfy... 
... for sending notifications via Ntfy (https://ntfy.sh/).

TODO: use proper formatting once supported in Android app:
https://github.com/binwiederhier/ntfy/issues/889
2023-10-17 14:05:03 +02:00

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Forward log messages via notification

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ℹ️ Info: This script can not be used on its own but requires the base installation. See main README for details.

Description

RouterOS itself supports sending log messages via e-mail or to a syslog server (see /system/logging). This has some limitation, however:

  • does not work early after boot if network connectivity is not yet established, or breaks intermittently
  • lots of messages generate a flood of mails
  • Matrix and Telegram are not supported

The script works around the limitations, for example it does:

  • read from /log, including messages from early boot
  • skip multi-repeated messages
  • rate-limit itself to mitigate flooding
  • forward via notification (which includes e-mail, Matrix and Telegram when installed and configured, see below)

It is intended to be run periodically from scheduler, then collects new log messages and forwards them via notification.

Sample notification

log-forward notification

Requirements and installation

Just install the script:

$ScriptInstallUpdate log-forward;

... and add a scheduler:

/system/scheduler/add interval=1m name=log-forward on-event="/system/script/run log-forward;" start-time=startup;

Configuration

The configuration goes to global-config-overlay, these are the parameters:

  • LogForwardFilter: define topics not to be forwarded
  • LogForwardFilterMessage: define message text not to be forwarded
  • LogForwardInclude: define topics to be forwarded (even if filter matches)
  • LogForwardIncludeMessage: define message text to be forwarded (even if filter matches)

ℹ️ Info: Copy relevant configuration from global-config (the one without -overlay) to your local global-config-overlay and modify it to your specific needs.

These patterns are matched as regular expressions. To forward all (ignoring severity) log messages with topics account (which includes user logins) and dhcp you need something like:

:global LogForwardInclude "(account|dhcp)";

Also notification settings are required for e-mail, matrix, ntfy and/or telegram.

Tips & Tricks

Notification on reboot

You want to receive a notification on every device (re-)boot? Quite easy, just add:

:global LogForwardIncludeMessage "(^router rebooted)";

This will match on every log message beginning with router rebooted.

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