Slack

Slack

The Slack transport sends the alert message to your Slack incoming webhook with a POST request. It uses the attachments option. You can give several webhooks, each with its own options. LibreNMS removes the simple HTML tags from the message. All options are optional. Only the URL is necessary. Without the URL, LibreNMS makes no call to Slack.

These attachment options are available:

• author_name

These global message options are available:

• channel_name: the Slack channel name of the alert, without the leading #
• icon_emoji: the emoji name in colon format for the author icon

Slack docs

The alert template can make use of Slack markdown. The Slack markdown dialect marks a custom link with HTML angle brackets, but LibreNMS removes them. For a custom link in an alert, use the bracket and parenthesis markdown syntax. For example, a Slack link is normally:

<https://www.example.com|My Link>

In your alert template, use this format:

[My Link](https://www.example.com)

Example: