Hi Fan,
The reason we need such a thing is because in Vitrage (which is an Openstack
Root Cause Analysis Engine) we may raise a deduced alarms on (for example) each
instance in the host, and we would like this name to be a human readable alarm
(as you said yourself) without any random strings in order that it will be user
and human friendly. Over time, the {seq-num} would grow and become less
convenient and readable.
In addition, we would like to give the users the ability to listen \ do a
webhook on a specific alarm name (so if we will have a random string attached
to each name, it won’t be possible). With your suggestion, we would need to at
the very least be able to register to a set of alarms using regex – is this
supported?
For more information about Vitrage:
https://wiki.openstack.org/wiki/Vitrage
Best regards,
Alexey
From: ZhiQiang Fan [mailto:[email protected]]
Sent: Tuesday, May 03, 2016 6:05 PM
To: OpenStack Development Mailing List (not for usage questions)
Subject: Re: [openstack-dev] [vitrage] [aodh] Error when creating 2 event
alarms with the same name
Alarm name unique constraint is only applied to each project, I don't remember
the original cause, but in our customer's environment, alarm will be showed in
the portal, with their name, no uuid, because user will be confused about such
a random like string, then if alarm name can be duplicated, it is hard for them
to differ between alarms.
So is there particular reason why you need to create duplicate name? can it be
something like event-alarm-{event_type}-{seq_number} ?
Anyway, it is not so hard to remove this constraint, I just want to say that
alarm name should be meaningful, otherwise it makes no difference with UUID:
not human friendly.
On Tue, May 3, 2016 at 10:30 PM, Weyl, Alexey (Nokia - IL)
<[email protected]<mailto:[email protected]>> wrote:
Hi,
First of all, I wanted to thank again to all the participants in the fruitful
Aodh-Vitrage design session in Austin :)
I wanted to show in this email, the problem that we have when creating 2 event
alarms with the same name.
Here is what I got in the command line:
stack@ubuntu-devstack:/etc/vitrage$ ceilometer alarm-list
+----------+------+-------+----------+---------+------------+-----------------+------------------+
| Alarm ID | Name | State | Severity | Enabled | Continuous | Alarm condition |
Time constraints |
+----------+------+-------+----------+---------+------------+-----------------+------------------+
+----------+------+-------+----------+---------+------------+-----------------+------------------+
stack@ubuntu-devstack:/etc/vitrage$ ceilometer alarm-event-create --name 'Event
Alarm 2' --state alarm --event-type 'my.event'
+---------------------------+--------------------------------------+
| Property | Value |
+---------------------------+--------------------------------------+
| alarm_actions | [] |
| alarm_id | 96f11384-abd7-4c11-b0a5-678646c11e79 |
| description | Alarm when my.event event occurred. |
| enabled | True |
| event_type | my.event |
| insufficient_data_actions | [] |
| name | Event Alarm 2 |
| ok_actions | [] |
| project_id | bec13d47c22e45a9948981f5cb1ba45b |
| query | [] |
| repeat_actions | False |
| severity | low |
| state | alarm |
| type | event |
| user_id | d8812494489546aca8341af184eddd2c |
+---------------------------+--------------------------------------+
stack@ubuntu-devstack:/etc/vitrage$ ceilometer alarm-list
+--------------------------------------+---------------+-------+----------+---------+------------+----------------------+------------------+
| Alarm ID | Name | State | Severity |
Enabled | Continuous | Alarm condition | Time constraints |
+--------------------------------------+---------------+-------+----------+---------+------------+----------------------+------------------+
| 96f11384-abd7-4c11-b0a5-678646c11e79 | Event Alarm 2 | alarm | low |
True | False | query: [] | None |
| | | | |
| | event_type: my.event | |
+--------------------------------------+---------------+-------+----------+---------+------------+----------------------+------------------+
stack@ubuntu-devstack:/etc/vitrage$ ceilometer alarm-event-create --name 'Event
Alarm 2' --state alarm --event-type 'my.event'
Alarm with name='Event Alarm 2' exists (HTTP 409) (Request-ID:
req-b05dd105-fd23-47d3-a0b6-940bde6bcdd8)
Do you think it is possible to drop the uniqueness of the alarm name in Aodh
(for the Vitrage use cases that we talked about in the design session)?
Best regards,
Alexey Weyl
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