b7d3821c7d
Update nova-notifier,mistral-notifier to Syntax 3 to replace Syntax 2 Change-Id: I74e51ca8ea8913a22cea3b0d6bec2afc80002c98
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Vitrage Nova Notifier
Overview
The main purpose of Vitrage is to provide insights about the state of the system on problems that are not directly monitored. An example of such a problem is a switch failure that causes a Nova host to become unreachable, while Nova is not aware of this problem.
The Nova notifier tries to solve this use case, by calling Nova force-down API to notify Nova that the host is down.
Configuration
In order to support this use case, the user should perform the following:
- Activate the nova notifier. In /etc/vitrage/vitrage.conf:
[DEFAULT]
notifiers = nova- Determine, in the Vitrage templates, what condition(s) indicates that the host is down. For example:
scenarios:
- condition: host_down_alarm [on] host
actions:
- mark_down:
target: hostFor more information about the mark-down action, see the Vitrage templates documentation: templates