Add support for polling as a service

Two new options

* PYPOLLER  - default, deprecated, needs Python 2.7
* PYSERVICE - Dispatcher service, recompile required

HEADS UP HEADS UP

Polling via cron job is now deprecated. Please use the Dispatcher.

LibreNMS will be dropping support for PHP 7.1 and Python 2 in the next release
expected May 31 2020.  see https://community.librenms.org/t/dropping-support-for-php-7-1-and-python-2/11851

Your existing crontab entries for the PYPOLLER option will be going away.

You can migrate to the PYSERVICE option of LibreNMS now.

PR:		246105
Submitted by:	Dries Michiels <driesm.michiels@gmail.com>

1 files changed, 23 insertions, 0 deletions

diff --git a/UPDATING b/UPDATING
index 1526567608b8..5355d9c856fc 100644
--- a/UPDATING
+++ b/UPDATING
@@ -5,6 +5,29 @@ they are unavoidable.
 You should get into the habit of checking this file for changes each time
 you update your ports collection, before attempting any port upgrades.
 
+20200503:
+  AFFECTS: users of net-mgmt/librenms
+  AUTHOR:  dvl@FreeBSD.org
+
+  Polling via cronjob is deprecated as of release 1.63
+  see see https://community.librenms.org/t/dropping-support-for-php-7-1-and-python-2/11851
+
+  Please migrate to the Dispatch Service:
+  https://docs.librenms.org/Extensions/Dispatcher-Service/
+
+  These steps should get you running:
+  * comment out the crontab entries listed above under PYPOLLER
+  * populate %%WWWDIR%%/.env with:
+    * APP_KEY - see farther below for how to create
+    * NODE_ID - see just below for how to create
+    * DB_HOST
+    * DB_DATABASE
+    * DB_USERNAME
+    * DB_PASSWORD
+  * you can create a NODE_ID with: php -r 'echo uniqid() . "\n";'
+  * sysrc librenms_enable="YES"
+  * service librenms start
+
 20200501:
   AFFECTS: users of www/phpmyfaq
   AUTHOR: flo@FreeBSD.org