how ceilometer send notification to heat in autoscaling feature? Can I get this notification from ceilometer?

asked 2017-06-09 03:17:19 -0500

samah

33 ●10 ●17 ●25

Hello, I want to know if there is a way to be notified by ceilometer when alarm state change in autoscaling. Thanks

answered 2017-06-09 11:21:49 -0500

zaneb
1875 ●4 ●22 ●28 https://www.zerobanana...

Aodh (and previously Ceilometer) doesn't know if it is calling Heat or not. It does an HTTP POST to whatever URL you specify as the alarm action. That's often the signal URL of the Heat scaling policy, but it doesn't have to be. And you can specify multiple actions, so you can notify Heat _and_ something else.

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So can I execute a function in the alarm action? If it's possible how to do that

samah ( 2017-06-12 08:39:47 -0500 )edit

No, you can only POST to a URL.

zaneb ( 2017-06-13 08:14:50 -0500 )edit

Ok I understand, what about using a servlet?

samah ( 2017-06-14 03:11:51 -0500 )edit

Yes, you could definitely do that.

zaneb ( 2017-06-15 10:46:22 -0500 )edit

Could you more explain to me how to do it, what's the form of the url to use and should I put the servlet in the machine that contain openstack? How to call it?

samah ( 2017-06-15 17:19:30 -0500 )edit

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how ceilometer send notification to heat in autoscaling feature? Can I get this notification from ceilometer?