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A cartridge is a container for a framework, load balancer or data management system. You can add a cartridge in a platform as a service (PaaS) for scalability.  A sample cartridge definition, together with information on all the properties that can be added in a cartridge definition JSON are as follows:

...

Excerpt
Code Block
 {
  "type": "php",
  "provider": "apache",
  "category": "data",
  "host": "php.stratos.org",
  "displayName": "php",
  "description": "php Cartridge",
  "version": "7",
  "multiTenant": "false",
  "portMapping": [
    {
	  "name": "http-80",
      "protocol": "http",
      "port": "80",
      "proxyPort": "8280"
	  "kubernetesPortType": "NodePort"
    },
    {
      "name": "http-22",
      "protocol": "tcp",
      "port": "22",
      "proxyPort": "8222"
	  "kubernetesPortType": "NodePort"
    }
  ],
  "deployment": {
    
  },
  "iaasProvider": [
    {
      "type": "mock",
      "imageId": "RegionOne/b4ca55e3-58ab-4937-82ce-817ebd10240e",
      "networkInterfaces": [
        {
          "name": "network-non-routable",
          "networkUuid": "b55f009a-1cc6-4b17-924f-4ae0ee18db5e"
        },
      ],
      "property": [
        {
          "name": "instanceType",
          "value": "RegionOne/aa5f45a2-c6d6-419d-917a-9dd2e3888594"
        },
        {
          "name": "keyPair",
          "value": "reka"
        },
        {
          "name": "securityGroups",
          "value": "default"
        }
      ]
    },
	{
			"type": "kubernetes",
			"imageId": "ap-southeast-1/ami­-70326522",
			"property": [],
			"networkInterfaces": []
	}
  ]
}

...

Property definitions

All the properties that correspond to the cartridge parameter resource are explained as follows: 

...

PropertyWRUDescriptionMDVData
Type 
Example
JSONUI
Anchor
protocol
protocol
protocol
Protocol The protocol that is used to map the portsYesN/AString

http

Anchor
port
port
port
Port The port to which the cartridge is mappedYesN/AInt80
Anchor
proxyPort
proxyPort
proxyPort
Proxy Port The proxy port to which the cartridge is mappedYesN/AInt8280

Anchor
kubernetesPortType
kubernetesPortType
kubernetesPortType

Kubernetes Port Type 

The Kubernetes port type to which the cartridge is mapped

Info

The following can be assigned for the Kubernetes port type:

  • NodePort -  If this value is used, it will create a service which can be accessed from the outside with port range of 30,000 to 32,767.
  • ClusterIP - If this value is used, the service that gets created will not be exposed to the outside. This is useful if you don't want to expose a service to outside, but need to maintain internal communication within Docker containers.

Access URLs are generated only for the NodePort service type.

NoN/AStringNodePort

...

Property NameRelevant IaaS   DescriptionDefault ValueExample Values
EOK
associatePublicIpAddressXXWhen using virtual private cloud (VPC) this property needs to be assigned to true, so that your cartridge instance will be assigned a public IP.truetrue, false
autoAssignIpXThis is used to determine whether your cartridge will be assigned a public IP or private IP. If this property, is true a public IP will be assigned to your cartridge. If this property is false the IP will be assigned manually.truetrue, false
availabilityZoneX

The name of the availability zone.

Note

If you are using more than one partition, define the availability zone only in the cartridge definition and make sure not to define the availability zone in the cloud-controller.xml. This will enable the Autoscaler to dynamically select availability zone based on the partition.

N/Aap-southeast-1a
blockUntilRunningXX

This will determine whether or not the instance spawning call to the IaaS will be blocked, in order to retrieve IP addresses. If you wish to auto assign IPs, the instance spawning call should be blocking, but if you wish to assign IPs manually, it can be non-blocking.

falsetrue, false
defaultFloatingIpPoolX XIf the floating IPs have not been pre-allocated for the respective tenant, when launching a cartridge, the floating IP allocation will fail. This property is used to specify the name of the floating IP pool that needs to be used.N/APublicPool1

instanceType

X

The type of instance that determines the instance size, which needs to be used. In OpenStack this is referred to as flavor.

Note

The instance type value needs to be specified differently based on the IaaS.
For example:

IaaSValue Format
EC2N/A
OpenStack<REGION>/<ID>
N/A

EC2

m1.small

OpenStack

RegionOne/2

keyPairXThe name of the private key that corresponds to the key pair used to connect to the instance.N/Aapache-stratos-key1
securityGroupIds XWhen defining a security group in a VPC scenario, this property should be used instead of the securityGroups property.N/Asg-c999f7a6
securityGroupsXThe name of the security group that is used to define the IP filter rules for the instance.N/Asg-c999f7a6
shellTypeX X XThe type of shell scripting language being used in the cartridge. This property is used to identify the correct customization script to use when passing the payload to the cartridge.N/Abash, sh, cmd
subnetIdX XID used to identify the virtual private cloud (VPC). For more information, go to Amazon VPC.N/Asubnet-3b8a7d2g
tagX X

A tag is a name value pair used to filter instances. For more information, go to Using Tags.
For example: <property name="tag.a" value="x" />

N/Aa
tagsXXDefines the names of multiple tags. For example: <property name="tags" value="a,b,c,d" /> N/Aa,b,c,d
KUBERNETES_CONTAINER_CPUXX

Number of CPU cores used in a pod. With the value following suffices (E, P, T, G, M, K, m) or their power-of-two equivalents (Ei, Pi, Ti, Gi, Mi, Ki) can be used. If value is defined as zero, it will allow to use indefinite resources in the Kubernetes node. For more information, go to Kubernetes resource model.

00, 0.3, 1, 300m
KUBERNETES_CONTAINER_MEMORYXXMemory usage of the pod. With the value following suffices (E, P, T, G, M, K, m) or their power-of-two equivalents (Ei, Pi, Ti, Gi, Mi, Ki) can be used. If value is defined as zero, it will allow to use indefinite resources in the Kubernetes node. For more information, go to Kubernetes resource model.00, 40Mi
KUBERNETES_SERVICE_SESSION_AFFINITYXXDefines the session affinity that can be used with Kubernetes.NoneClientIP

...

Property NameRelevant IaaS   DescriptionExample Values
EOK
START_CMDXX PCA
Cartridge Payload Property Definitions 

Include Page
Cartridge Payload Property Definitions
Cartridge Payload Property Definitions

persistence
PropertyWRUDescriptionMDVData
Type 
Example
JSONUI
Anchor
isRequired
isRequired
isRequired
Is
Required
 Whether an extra volume is required is required to be attached to the cartridge to store contentNoN/ABooleantrue
Anchor
volumes1
volumes1
volumes
Volume Details of the persistence volume that should be attached to the cartridge. For more information on the sub-properties, see volumes. NoN/Avolumes arrayN/A

...