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Cloud Controller Architecture
in Apache Stratos (incubation) 4.0.0

Reka Thirunavukkarasu
Committer and PPMC Member Apache Stratos (Incubating)
Software Engineer, WSO2 Inc
3rd of Dec 2013
Agenda
❖

Cloud Controller Architecture

❖

Topology handling
publishing complete topology
publishing all the events to topology

❖

Managing IaaS via jclouds
Inbuilt support for AWS ec2, openstack and vcloud
Ability to manage instances across different partitions(providers, regions and zones)
Allow to plug any IaaS

❖

Building information model from
Cartridge deployment
partition Vs IaasProvider
Subscription information
Managing instances

❖

Partition validation

❖

Hot deployment for cloud-controller.xml and cartridge definition

❖

Persistence storage for complete Topology and for information model

2
Connected over the message bus

3
Cloud Controller Architecture

4
Topology
{"serviceMap":{
"php":{
"serviceName":"php",
"clusterMap":{
"phptest.qmog.apache.stratos.com.php.domain":{
"serviceName":"php",
"clusterId":"test.apache.stratos.com.php.domain",
"hostName":"phptest.apache.stratos.com",
"tenantRange":"*",
"autoscalePolicyName":"economyPolicy",
"averageRequestsInFlight":0.0,
"requestsInFlightSecondDerivative":0.0,
"requestsInFlightGradient":0.0,
"memberMap":{..........................

5
Sample Topology
"memberMap":{
"test.apache.stratos.com.php.domain48c5587e-d1e8-4873-92d4-d4dad67be96f":{
"serviceName":"php",
"clusterId":"test.apache.stratos.com.php.domain ",
"memberId":"t1.apache.stratos.com.domain48c5587e-d1e8-4873-92d4-d4dad67be96f",
"status":"Activated",
"loadAverage":0.0,
"memoryConsumption":0.0,
"memberIp":"172.16.2.20",
"portMap":{
"http":{
"protocol":"http",
"value":8282,
"proxy":8280
}
}
}
}
}
}

6
Topology Handling
➢

One only publisher for the Topology

➢

Receive all the events to Topology

➢

➢

Publish events to Topology for
subscribers to build the Topology
Build it's own Topology and publish
complete Topology periodically

7
Managing nodes via jclouds
➢

Inbuilt support for Aws ec2, openstack and vlcoud.

➢

Any IaaS can be plugged

➢

Improved IaaS layer
support partitioning (provider, region, zone)
support permanent storage for nodes (openstack-volume)

8
Information Model

9
Building Information Model
➢

Cartridge deployment

➢

Cloud-controller.xml deployment

➢

Subscription

➢

Autoscaling decision

10
Identifying the instance state
➢

Subscriber to the instance.status topic.

instance.status

11
Partition Validation
➢

Partition gets validated in cloud controller

➢

Who defines the partition..?
Autoscaler defines the partition
<partitions>
<partition id="P1">
<!-- prvider is a required element -->
<provider>ec2</provider>
<property name="region" value="ap-southeast-1"/>
</partition>
</partitions>

➢

Validate deployment policy
Why policy needs a validation..?

12
Hot deployment
➢

Improved Cartridge schema
support any transport in the cartridge definition
dynamic payload handling

➢

Improved cloud-controller schema
nothing much..!

13
Partition Vs IaaSProvider
<iaasProvider type="openstack_region1" name="openstack specific details">
<className>org.wso2.carbon.stratos.cloud.controller.iaases.OpenstackNovaIaas</className>
<provider>openstack-nova</provider>
<identity svns:secretAlias="cloud.controller.openstack.identity">xxx:xxx</identity>
<credential svns:secretAlias="cloud.controller.openstack.credential">xxxxxxx</credential>
<property name="jclouds.endpoint" value="http://<xxxxx>:5000/v2.0" />
<property name="jclouds.openstack-nova.auto-create-floating-ips" value="false"/>
<property name="jclouds.api-version" value="2.0/" />

</iaasProvider>
<iaasProvider type="openstack_zone1" name="openstack specific details">
<className>org.wso2.carbon.stratos.cloud.controller.iaases.OpenstackNovaIaas</className>
<provider>openstack-nova</provider>
<identity svns:secretAlias="cloud.controller.openstack.identity">xxx:xxx</identity>
<credential svns:secretAlias="cloud.controller.openstack.credential">xxxxxxx</credential>
<property name="jclouds.endpoint" value="http://<xxxxx>:5000/v2.0" />
<property name="jclouds.openstack-nova.auto-create-floating-ips" value="false"/>
<property name="jclouds.api-version" value="2.0/" />

</iaasProvider>

14
How the Topology and Information model persist?
➢

Using registry to persist the Topology and the information
model

15
Thank you...!

Questions...?

16

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