Kubernetes Cluster Resource Definition

A Kubernetes Cluster is a collection of Docker hosts, and a set of management features for running Docker containers in a clustered environment. A sample Kubernetes Cluster definition, together with information on all the properties that can be added in a Kubernetes Cluster definition JSON are as follows:

Sample Kubernetes Cluster definition JSON

The following are sample configurations that can be used in a JSON to define a Kubernetes-CoreOS Cluster:

 {
  "clusterId": "kubernetes-cluster-1",
  "description": "Kubernetes Cluster 1",
  "kubernetesMaster": {
    "hostId": "master",
    "hostname": "master.dev.kubernetes.org",
    "privateIPAddress": "172.17.8.101",
    "publicIPAddress": "172.17.8.101",
    "property": [
      
    ]
  },
  "portRange": {
    "upper": "32767",
    "lower": "30000"
  },
  "kubernetesHosts": [
    {
      "hostId": "minion-1",
      "hostname": "minion-1.dev.kubernetes.org",
      "privateIPAddress": "172.17.8.102",
      "publicIPAddress": "172.17.8.102",
      "property": [
        
      ]
    }
  ],
  "property": [
    {
      "name": "payload_parameter.MB_IP",
      "value": "172.17.8.1"
    },
    {
      "name": "payload_parameter.MB_PORT",
      "value": "1883"
    },
    {
      "name": "payload_parameter.CEP_IP",
      "value": "172.17.8.1"
    },
    {
      "name": "payload_parameter.CEP_PORT",
      "value": "7711"
    },
    {
      "name": "payload_parameter.LOG_LEVEL",
      "value": "DEBUG"
    },
    {
      "name": "payload_parameter.METADATA_SERVICE_URL",
      "value": "https://172.17.8.1:9443"
    }
  ]
}

You can configure the KUBERNETES_MASTER_PORT by defining it under the Kubernetes Master property parameter.

Example:

{
  "name": "KUBERNETES_MASTER_PORT",
  "value": "8080"
}

Property definitions

All the properties that correspond to the Kubernetes Cluster resource are explained as follows:

clusterId 
description 
kubernetesHosts
- hostId 
- hostname
-  privateIPAddress
-  publicIPAddress
- property
kubernetesMaster
-  hostId 
- hostname
-   privateIPAddress
-  publicIPAddress
- property
  - ```
  name
```
- ```
value
```
 portRange
- lower
- upper
 property
- name
- value

Main property definitions

Property					Description			Data Type	Example Value
JSON	UI				Description			Data Type	Example Value
`clusterId`	clusterId	√	√	X	ID of the Kubernetes cluster. This needs to be a unique value.	Yes	N/A	String	kubernetes-cluster-1
`description`	description	√	√	√	A short description of the Kubernetes Cluster.	Yes	N/A	String	Kubernetes Cluster 1
`kubernetesMaster`	kubernetesMaster	√	√	√	The Kubernetes master definition. For more information on the sub-properties, see kubernetesMaster.	Yes	N/A	kubernetesMaster	N/A
`portRange`	portRange	√	√	√	The allowed port range for the service.	Yes	N/A	portRange	N/A
`kubernetesHosts`	kubernetesHosts	√	√	√	The Kubernetes host (salve/minion) definition. or more information on the sub-properties, see kubernetesHosts.	Yes	N/A	kubernetesHosts array	N/A
`property`	property	√	√	√	These are properties that are used by Stratos when creating the Stratos Kubernetes Cluster. These properties are listed as name value pairs.	Yes	N/A	property array	N/A

Sub-parameter definitions

kubernetesMaster

Property					Description			Data Type	Example Value
JSON	UI				Description			Data Type	Example Value
`hostId`	hostId	√	√	X	Unique ID of the Kubernetes master.	Yes	N/A	String	master
`hostname`	hostname	√	√	√	The hostname of the Kubernetes master.	Yes	N/A	String	master.dev.kubernetes.org
`privateIPAddress`	privateIPAddress	√	√	√	The IP address of the Kubernetes master used to communicate within the Kubernetes cluster.	Yes	N/A	String	172.17.8.101
`publicIPAddress`	publicIPAddress	√	√	√	The IP address of the Kubernetes master used for external communication.	Yes	N/A	String	172.17.8.101
`property`	property	√	√	√	These are properties that are used by Stratos when creating the Stratos Kubernetes Master. These properties are listed as name value pairs. For more information on the sub-properties, see property .	Yes	N/A	property array	N/A

kubernetesHost

Property					Description			Data Type	Example
JSON	UI				Description			Data Type	Example
`hostId`	hostId	√	√	X	Unique ID of the Kubernetes Host.	Yes	N/A	String	minion-1
`hostname`	hostname	√	√	√	The hostname of the Kubernetes Host.	Yes	N/A	String	minion-1.dev.kubernetes.org
`privateIPAddress`	privateIPAddress	√	√	√	The IP address of the Kubernetes Host used to communicate within the Kubernetes Cluster.	Yes	N/A	String	172.17.8.102
`publicIPAddress`	publicIPAddress	√	√	√	The IP address of the Kubernetes Host used for external communication.	Yes	N/A	String	172.17.8.102
`property`	property	√	√	√	These are properties that are used by Stratos when creating the Stratos Kubernetes Host. These properties are listed as name value pairs. For more information on the sub-properties, see property.	Yes	N/A	property array	N/A

portRange

Property					Description			Data Type	Example
JSON	UI				Description			Data Type	Example
`lower`	lower	√	√	√	This is the lower limit of the service port range.	Yes	N/A	Int	4500
`upper`	upper	√	√	√	This is the upper limit of the service port range.	Yes	N/A	Int	5000

property

Property Name	Description	Required	Example Value
`payload_parameter.MB_IP`	Message Broker IP.	Yes	172.17.42.1
`payload_parameter.MB_PORT`	Message Broker port.	Yes	1883
`payload_parameter.CEP_IP`	Complex Event Processor IP.	Yes	172.17.42.1
`payload_parameter.CEP_PORT`	Complex Event Processor port.	Yes	7611
`payload_parameter.LOG_LEVEL`	If this property is set to `DEBUG`, when the Python cartridge agent is running, it will print the corresponding `DEBUG` logs. If this property is not defined, then the Python cartridge agent will only print the `INFO` logs.	Yes	DEBUG
`payload_parameter.METADATA_SERVICE_URL`	The URL used to access the Metadata service.	Yes	https://172.17.8.1:9443