[Openstack] Request for help - Heat Auto-scaling

Eoghan Glynn eglynn at redhat.com
Fri Mar 14 12:05:04 UTC 2014


Try changing:

   "repeat_actions": "true"

to:

   "repeat_actions": True

----- Original Message -----
> Eoghan, thanks for your reply.
> 
> 
> I modified the alarm in my template, like this:
>  67     "CPUAlarmLow": {
>  68       "Type": "OS::Ceilometer::Alarm",
>  69       "Properties": {
>  70         "description": "Scale-down if CPU is less than 20% for 10
> seconds",
>  71         "meter_name": "cpu_util",
>  72         "statistic": "avg",
>  73         "period": "10",
>  74         "evaluation_periods": "1",
>  75         "threshold": "20",
>  76         "alarm_actions": [ {"Fn::GetAtt": ["ScaleDownPolicy",
> "AlarmUrl"]} ],
>  77         "matching_metadata": {"metadata.user_metadata.server_group":
> "WebServerGroup" },
>  78         "comparison_operator": "lt",
>  79         "repeat_actions": "true"
>  80       }
>  81     }
> 
> 
> but there's an error while creating the stack, here is the log:
> 
> 
> {"error_message": {"debuginfo": null, "faultcode": "Server", "faultstring":
> "repeat_actions: Wrong type. Expected '<type 'bool'>', got '<type 'str'>'"}}
> 160  log_http_response
> /usr/lib/python2.6/site-packages/ceilometerclient/common/http.py:121
> 161 2014-03-14 16:55:08.835 2997 WARNING ceilometerclient.common.http [-]
> Request returned failure status.
> 162 2014-03-14 16:55:08.835 2997 ERROR heat.engine.resource [-] CREATE :
> CeilometerAlarm "CPUAlarmHigh"
> 
> 
> 
> 
> 2014-03-13 19:26 GMT+08:00 Eoghan Glynn <eglynn at redhat.com>:
> 
> >
> > What version of Heat are you using?
> >
> > The repeat_actions attribute on the alarms was needed to set
> > explicitly True in Havana (whereas this is now the default).
> >
> > This continuous notification is needed for the Heat autoscaling
> > logic to kick in successfully.
> >
> > So if using Havana, please add this setting to CPUAlarmHigh
> > & CPUAlarmLow.
> >
> > Cheers,
> > Eoghan
> >
> >
> > ----- Original Message -----
> > > Hello Jay,
> > > Thanks, here is my template:
> > >
> > > {
> > > "AWSTemplateFormatVersion" : "2014-03-06",
> > >
> > > "Parameters" : {
> > > "InstanceType" : {
> > > "Description" : "WebServer EC2 instance type",
> > > "Type" : "String",
> > > "Default" : "m1.small",
> > > "ConstraintDescription" : "must be a valid EC2 instance type."
> > > },
> > > "WebServerPort" : {
> > > "Description" : "TCP/IP port of the web server",
> > > "Type" : "String",
> > > "Default" : "8888"
> > > },
> > > "KeyName" : {
> > > "Description" : "Name of an existing EC2 KeyPair to enable SSH access to
> > the
> > > instances",
> > > "Type" : "String",
> > > "Default" : "damonkey"
> > > }
> > > },
> > >
> > > "Resources" : {
> > > "WebServerGroup" : {
> > > "Type" : "AWS::AutoScaling::AutoScalingGroup",
> > > "Properties" : {
> > > "AvailabilityZones" : { "Fn::GetAZs" : "" },
> > > "LaunchConfigurationName" : { "Ref" : "LaunchConfig" },
> > > "MinSize" : "1",
> > > "MaxSize" : "3"
> > > }
> > > },
> > > "ScaleUpPolicy": {
> > > "Type": "AWS::AutoScaling::ScalingPolicy",
> > > "Properties": {
> > > "AdjustmentType": "ChangeInCapacity",
> > > "AutoScalingGroupName": "WebServerGroup",
> > > "Cooldown": "60",
> > > "ScalingAdjustment": "1"
> > > }
> > > },
> > > "ScaleDownPolicy": {
> > > "Type": "AWS::AutoScaling::ScalingPolicy",
> > > "Properties": {
> > > "AdjustmentType": "ChangeInCapacity",
> > > "AutoScalingGroupName": "WebServerGroup",
> > > "Cooldown": "60",
> > > "ScalingAdjustment": "-1"
> > > }
> > > },
> > > "CPUAlarmHigh": {
> > > "Type": "OS::Ceilometer::Alarm",
> > > "Properties": {
> > > "description": "Scale-up if CPU is greater than 90% for 10 seconds",
> > > "meter_name": "cpu_util",
> > > "statistic": "avg",
> > > "period": "10",
> > > "evaluation_periods": "1",
> > > "threshold": "90",
> > > "alarm_actions": [ {"Fn::GetAtt": ["ScaleUpPolicy", "AlarmUrl"]} ],
> > > "matching_metadata": {"metadata.user_metadata.server_group":
> > "WebServerGroup"
> > > },
> > > "comparison_operator": "gt"
> > > }
> > > },
> > > "CPUAlarmLow": {
> > > "Type": "OS::Ceilometer::Alarm",
> > > "Properties": {
> > > "description": "Scale-down if CPU is less than 50% for 10 seconds",
> > > "meter_name": "cpu_util",
> > > "statistic": "avg",
> > > "period": "10",
> > > "evaluation_periods": "1",
> > > "threshold": "50",
> > > "alarm_actions": [ {"Fn::GetAtt": ["ScaleDownPolicy", "AlarmUrl"]} ],
> > > "matching_metadata": {"metadata.user_metadata.server_group":
> > "WebServerGroup"
> > > },
> > > "comparison_operator": "lt"
> > > }
> > > },
> > > "LaunchConfig" : {
> > > "Type" : "AWS::AutoScaling::LaunchConfiguration",
> > > "Properties" : {
> > > "KeyName" : { "Ref" : "KeyName" },
> > > "ImageId" : "CirrOS 0.3.1",
> > > "UserData" : { "Fn::Base64" : { "Ref" : "WebServerPort" }},
> > > "SecurityGroups" : [ "default" ],
> > > "InstanceType" : { "Ref" : "InstanceType" }
> > > }
> > > }
> > > }
> > >
> > > }
> > >
> > >
> > > 2014-03-13 13:29 GMT+08:00 Micheal < pannov.tsth at gmail.com > :
> > >
> > >
> > >
> > > Does Heat support auto-scaling in Havana ? The cloudwatch seems to be
> > > deprecated, and the new mechanism with ceilometer seems not working
> > either.
> > > I can create stack successfully, but the stack with
> > > AWS::AutoScaling::AutoScalingGroup can not auto-scaling as expected.
> > > All replies appreciated, thanks!
> > >
> > >
> > > _______________________________________________
> > > Mailing list:
> > http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack
> > > Post to     : openstack at lists.openstack.org
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> > >
> >
> 




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