Werk #968: Notification scripts are now configurable via WATO

Check_MK now has a new alternative API for notification scripts, which allows them to be configured via WATO. The classical API provided the possibility of a list of strings that was passed to the script in form of variables like PARAMETER_1, PARAMETER_2, etc. The new API passes parameters according to keys of a WATO-configured dictionary, like PARAMETER_FROM and PARAMETER_REPLY_TO.

Two notification scripts have already been converted to use the new API: mail (sending HTML emails) and mkeventd (forwarding to the Event Console).

The configuration of a notification script does only work with the new Rule Based Notifications can be done at two places:

• In new rulesets below Host & Service Parameters → Monitoring Configuration → Notifications
• In a notification rule

Both configurations are being merged on a per-key basis. That way you can e.g. setup a From: header for your outgoing emails via a global rule, but select various different Reply-To: addresses in different notification rules. If a configuration key appears both in Host & Service Parameters and in a notification rule then the latter one has precedence.

Within that effort the HTML email script has been made far more configurable. You can now configure:

• The From- and Reply-To Address
• The subjects for host and service notifications
• An URL-Prefix for your Multisite interface (this makes hosts and services in the notifications clickable
• A choice of optional information to be displayed in the emails

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