When trying to use the supplied (/etc/heat/templates/AWS_CloudWatch_Alarm.yaml) Ceilometer based AWS::CloudWatch::Alarm implementation we get the the following error:
"ValueError: Value must be a comma-delimited list string: 'list' object has no attribute 'split'"
This is with Havana, but Icehouse seems to have the same implementation.
It seems to correspond with the way the "Dimensions" property of AWS::Cloudwatch::Alarm is mapped to the "matching_metadata" property of OS::Ceilometer::Alarm.
Here is what is in the heat-engine.log:
2014-05-06 22:31:41.965 3619 INFO heat.engine.resource [-] creating TemplateResource "CPUHighAlarm"
2014-05-06 22:31:41.966 3619 DEBUG heat.engine.scheduler [-] Task resource_action running step /usr/lib/python2.7/dist-packages/heat/engine/scheduler.py:164
2014-05-06 22:31:41.984 3619 INFO urllib3.connectionpool [-] Starting new HTTPS connection (1): cloud-api-onl.ncsa-east-msr.ubisoft.com
2014-05-06 22:31:42.055 3619 DEBUG urllib3.connectionpool [-] "GET /identity/admin/v2.0//users/cf31a52de0cc4ab7badc3064b6e19a3b/credentials/OS-EC2 HTTP/1.1" 200 None _make_request /usr/lib/python2.7/dist-packages/urllib3/connectionpool.py
:296
2014-05-06 22:31:42.091 3619 ERROR heat.engine.resource [-] CREATE : TemplateResource "CPUHighAlarm"
2014-05-06 22:31:42.091 3619 TRACE heat.engine.resource Traceback (most recent call last):
2014-05-06 22:31:42.091 3619 TRACE heat.engine.resource File "/usr/lib/python2.7/dist-packages/heat/engine/resource.py", line 368, in _do_action
2014-05-06 22:31:42.091 3619 TRACE heat.engine.resource handle_data = handle()
2014-05-06 22:31:42.091 3619 TRACE heat.engine.resource File "/usr/lib/python2.7/dist-packages/heat/engine/resources/template_resource.py", line 181, in handle_create
2014-05-06 22:31:42.091 3619 TRACE heat.engine.resource self._to_parameters())
2014-05-06 22:31:42.091 3619 TRACE heat.engine.resource File "/usr/lib/python2.7/dist-packages/heat/engine/stack_resource.py", line 100, in create_with_template
2014-05-06 22:31:42.091 3619 TRACE heat.engine.resource owner_id=self.stack.id)
2014-05-06 22:31:42.091 3619 TRACE heat.engine.resource File "/usr/lib/python2.7/dist-packages/heat/engine/parser.py", line 100, in __init__
2014-05-06 22:31:42.091 3619 TRACE heat.engine.resource user_params=self.env.params)
2014-05-06 22:31:42.091 3619 TRACE heat.engine.resource File "/usr/lib/python2.7/dist-packages/heat/engine/parameters.py", line 360, in __init__
2014-05-06 22:31:42.091 3619 TRACE heat.engine.resource self.params = dict((p.name, p) for p in parameters())
2014-05-06 22:31:42.091 3619 TRACE heat.engine.resource File "/usr/lib/python2.7/dist-packages/heat/engine/parameters.py", line 360, in <genexpr>
2014-05-06 22:31:42.091 3619 TRACE heat.engine.resource self.params = dict((p.name, p) for p in parameters())
2014-05-06 22:31:42.091 3619 TRACE heat.engine.resource File "/usr/lib/python2.7/dist-packages/heat/engine/parameters.py", line 355, in parameters
2014-05-06 22:31:42.091 3619 TRACE heat.engine.resource yield Parameter(name, schema, value, validate_value)
2014-05-06 22:31:42.091 3619 TRACE heat.engine.resource File "/usr/lib/python2.7/dist-packages/heat/engine/parameters.py", line 156, in __new__
2014-05-06 22:31:42.091 3619 TRACE heat.engine.resource return ParamClass(name, schema, value, validate_value)
2014-05-06 22:31:42.091 3619 TRACE heat.engine.resource File "/usr/lib/python2.7/dist-packages/heat/engine/parameters.py", line 246, in __init__
2014-05-06 22:31:42.091 3619 TRACE heat.engine.resource validate_value)
2014-05-06 22:31:42.091 3619 TRACE heat.engine.resource File "/usr/lib/python2.7/dist-packages/heat/engine/parameters.py", line 171, in __init__
2014-05-06 22:31:42.091 3619 TRACE heat.engine.resource self.validate(self.user_value)
2014-05-06 22:31:42.091 3619 TRACE heat.engine.resource File "/usr/lib/python2.7/dist-packages/heat/engine/parameters.py", line 270, in validate
2014-05-06 22:31:42.091 3619 TRACE heat.engine.resource parsed = self.parse(val)
2014-05-06 22:31:42.091 3619 TRACE heat.engine.resource File "/usr/lib/python2.7/dist-packages/heat/engine/parameters.py", line 255, in parse
2014-05-06 22:31:42.091 3619 TRACE heat.engine.resource raise ValueError(message % str(err))
2014-05-06 22:31:42.091 3619 TRACE heat.engine.resource ValueError: Value must be a comma-delimited list string: 'list' object has no attribute 'split'
2014-05-06 22:31:42.091 3619 TRACE heat.engine.resource
2014-05-06 22:31:42.122 3619 DEBUG heat.engine.scheduler [-] Task resource_action cancelled cancel /usr/lib/python2.7/dist-packages/heat/engine/scheduler.py:187
2014-05-06 22:31:42.130 3619 DEBUG heat.engine.scheduler [-] Task stack_task from Stack "test_aws_for_report" complete step /usr/lib/python2.7/dist-packages/heat/engine/scheduler.py:170
2014-05-06 22:31:42.131 3619 WARNING heat.engine.service [-] Stack create failed, status FAILED
My basic test template is as follows:
{
"AWSTemplateFormatVersion" : "2010-09-09",
"Parameters" : {
"KeyName" : {
"Description" : "Name of an existing KeyPair to enable SSH access to the instance",
"Type" : "String"
},
"InstanceType" : {
"Description" : "Instance type",
"Type" : "String",
"Default" : "U1.small",
"AllowedValues" : [ "U1.small" ],
"ConstraintDescription" : "must be a valid instance type."
},
"Image": {
"Default": "redhat",
"Description" : "Distribution of choice",
"Type": "String",
"AllowedValues" : [ "cirros", "redhat" ]
},
"MinPoolSize" : {
"Default": "1",
"Description": "Minimum Size of the Scaling Pool",
"Type": "String"
},
"MaxPoolSize" : {
"Default": "10",
"Description": "Maximum size of the Scaling Pool",
"Type": "String"
}
},
"Mappings" : {
"DistroArch2AMI": {
"cirros" : { "64" : "cirros-0.3.1-x86_64" },
"redhat" : { "64" : "CentOS-6.5-x86_64-20140227" }
}
},
"Resources" : {
"Nodes" : {
"Type" : "AWS::AutoScaling::AutoScalingGroup",
"Properties" : {
"AvailabilityZones" : { "Fn::GetAZs" : ""},
"LaunchConfigurationName" : { "Ref" : "LaunchConfig" },
"MinSize" : { "Ref" : "MinPoolSize" },
"MaxSize" : { "Ref" : "MaxPoolSize" }
}
},
"LaunchConfig" : {
"Type" : "AWS::AutoScaling::LaunchConfiguration",
"Metadata" : {
"AWS::CloudFormation::Init" : {
"config" : {
}
}
},
"Properties" : {
"KeyName" : { "Ref" : "KeyName" },
"ImageId" : { "Fn::FindInMap" : [ "DistroArch2AMI", { "Ref" : "Image" }, "64" ] },
"InstanceType": { "Ref" : "InstanceType" },
"UserData" : {
"Fn::Base64" : {
"Fn::Join" : ["", [
"#!/bin/bash\n",
"if [ -e '/root/setup.sh' ]; then exec /root/setup.sh; fi\n"
]]
}
}
}
},
"ScaleUpPolicy" : {
"Type" : "AWS::AutoScaling::ScalingPolicy",
"Properties" : {
"AdjustmentType" : "ChangeInCapacity",
"AutoScalingGroupName" : { "Ref" : "Nodes" },
"Cooldown" : "60",
"ScalingAdjustment" : "1"
}
},
"CPUHighAlarm" : {
"Type" : "AWS::CloudWatch::Alarm",
"Properties" : {
"AlarmDescription" : "Scale up with CPU > 50% for 5 minute",
"MetricName" : "cpu_util",
"Statistic" : "Average",
"Period" : "300",
"EvaluationPeriods" : "1",
"Threshold" : "50",
"AlarmActions" : [ { "Ref" : "ScaleUpPolicy" } ],
"Dimensions": [
{
"Name": "AutoScalingGroupName",
"Value": { "Ref": "Nodes" }
}
],
"ComparisonOperator" : "GreaterThanThreshold"
}
}
},
"Outputs" : {
"ScaleUpTrigger" : {
"Description" : "Scale Up Policy Trigger",
"Value" : { "Fn::Join" : [ "", [ "ScaleUpTrigger=", { "Ref" : "ScaleUpPolicy" } ]] }
}
}
}
It does not work with custom template resource mapping. Looks like the custom resource template is not in sync with property changes and treats some properties as strings rather than lists.