# sending WARN and CRITICAL to separate Slack channels

**URL:** <https://discourse.sensu.io/t/sending-warn-and-critical-to-separate-slack-channels/454>\
**Category:** Sensu Classic (EOL)\
**Created:** [June 27, 2015, 7:16am UTC](https://discourse.sensu.io/t/sending-warn-and-critical-to-separate-slack-channels/454 "2015-06-27T07:16:32Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Aiman\_Parvaiz](https://avatars.discourse-cdn.com/v4/letter/a/f19dbf/32.png) [@Aiman\_Parvaiz](https://discourse.sensu.io/u/Aiman_Parvaiz)\
**Post date:** [June 27, 2015, 7:16am UTC](https://discourse.sensu.io/t/sending-warn-and-critical-to-separate-slack-channels/454/1 "2015-06-27T07:16:32Z")

</div>

Hi everyone  
I am required to report WARN and CRITICAL messages to separate Slack channels, did a preliminary search for this but couldnt find much. In most cases in checks we specify slack handler and that sends all messages to one channel. Is there a way to send notifications to different slack channels depending on the severity of the alert?

Thanks

---

<div class="post-metadata">

**Author:** ![Kyle\_Anderson](https://avatars.discourse-cdn.com/v4/letter/k/e5b9ba/32.png) [@Kyle\_Anderson](https://discourse.sensu.io/u/Kyle_Anderson)\
**Post date:** [June 28, 2015, 1:30am UTC](https://discourse.sensu.io/t/sending-warn-and-critical-to-separate-slack-channels/454/2 "2015-06-28T01:30:15Z")

</div>

One way to do this with stock handlers is to configure two handlers:  
one handler for each channel. Then configure the different handlers  
respond to different severities:  
[https://sensuapp.org/docs/latest/handlers#definition-attributes](https://sensuapp.org/docs/latest/handlers#definition-attributes) (see  
"severities")  
So you might have a slack-criticals handler that operates on CRITICAL  
and slack-warnings handler that operates on.. everything else? It  
would be up to you.

It does require you to have each check send to both handlers. (or make  
a handler set)

At Yelp we have lots of teams and lots of channels, so it was worth it  
for us to handle this with a custom handler, sending "paging" alerts  
to one channel and non-paging alerts to a different one, depending on  
your team:

> <https://github.com/Yelp/sensu_handlers/blob/master/files/nodebot.rb#L12-L21>

> **···**
>
> On Sat, Jun 27, 2015 at 12:16 AM, \<aiman@flipagram.com\> wrote:
> 
> > Hi everyone  
> > I am required to report WARN and CRITICAL messages to separate Slack  
> > channels, did a preliminary search for this but couldnt find much. In most  
> > cases in checks we specify slack handler and that sends all messages to one  
> > channel. Is there a way to send notifications to different slack channels  
> > depending on the severity of the alert?
> > 
> > Thanks

---

<div class="post-metadata">

**Author:** ![Aiman\_Parvaiz](https://avatars.discourse-cdn.com/v4/letter/a/f19dbf/32.png) [@Aiman\_Parvaiz](https://discourse.sensu.io/u/Aiman_Parvaiz)\
**Post date:** [June 28, 2015, 2:08am UTC](https://discourse.sensu.io/t/sending-warn-and-critical-to-separate-slack-channels/454/3 "2015-06-28T02:08:00Z")

</div>

Perfect, thanks a lot for your help Kyle, I will definitely evaluate this.

Thanks

> **···**
>
> On Sat, Jun 27, 2015 at 6:30 PM, Kyle Anderson [kyle@xkyle.com](mailto:kyle@xkyle.com) wrote:
> 
> > One way to do this with stock handlers is to configure two handlers:
> > 
> > one handler for each channel. Then configure the different handlers
> > 
> > respond to different severities:
> > 
> > [https://sensuapp.org/docs/latest/handlers#definition-attributes](https://sensuapp.org/docs/latest/handlers#definition-attributes) (see
> > 
> > “severities”)
> > 
> > So you might have a slack-criticals handler that operates on CRITICAL
> > 
> > and slack-warnings handler that operates on… everything else? It
> > 
> > would be up to you.
> > 
> > It does require you to have each check send to both handlers. (or make
> > 
> > a handler set)
> > 
> > At Yelp we have lots of teams and lots of channels, so it was worth it
> > 
> > for us to handle this with a custom handler, sending “paging” alerts
> > 
> > to one channel and non-paging alerts to a different one, depending on
> > 
> > your team:
> > 
> > [https://github.com/Yelp/sensu\_handlers/blob/master/files/nodebot.rb#L12-L21](https://github.com/Yelp/sensu_handlers/blob/master/files/nodebot.rb#L12-L21)
> > 
> > On Sat, Jun 27, 2015 at 12:16 AM, [aiman@flipagram.com](mailto:aiman@flipagram.com) wrote:
> > 
> > > Hi everyone
> > 
> > > I am required to report WARN and CRITICAL messages to separate Slack
> > 
> > > channels, did a preliminary search for this but couldnt find much. In most
> > 
> > > cases in checks we specify slack handler and that sends all messages to one
> > 
> > > channel. Is there a way to send notifications to different slack channels
> > 
> > > depending on the severity of the alert?
> > 
> > > 
> > 
> > > Thanks
> 
> –
> 
> **Aiman Parvaiz**
> 
> Lead Systems Architect  
> [aiman@flipagram.com](mailto:aiman@flipagram.com)
> 
> cell: 213-300-6377
> 
> [http://flipagram.com/apz](http://flipagram.com/apz)