GitHub - azhry/oracle-kubernetes-engine: The demo of how to create Virtual Cloud Network and Kubernetes Cluster in Oracle Kubernetes Engine (OKE) with OCI Go SDK

Author

Azhary Arliansyah

VCN Rough Sketch

Cluster Specs

Kubernetes Version: v1.22.5
Assign Public IP: true
Service LB Subnet: svc-subnet
VCN: OCI-GOSDK-Az-VCN
Node Count: 3 Nodes

Node Pool Specs

Node Count: 3
Kubernetes Version: v1.22.5
Shape: VM.Standard.E3.Flex
OCPUs: 4

VCN Specs

Display Name: OCI-GOSDK-Az-VCN
CIDR Block: 10.0.0.0/16
DNS Label: vcndns

VCN Components

Label	Type	Specs
internetgateway	Internet Gateway	CIDR Block: 0.0.0.0/0
natgateway	NAT Gateway	CIDR Block: 0.0.0.0/0
servicegateway	Service Gateway	-
public-route-table	Routing Table	Network entity: Internet Gateway (0.0.0.0/0)
private-route-table	Routing Table	Network entity: NAT Gateway (0.0.0.0/0) Network entity: Service Gateway (all-sin-services-in-oracle-services-network)
svc-subnet	Subnet	CIDR Block: 10.0.20.0/24 Routing Table: public-route-table DNS Label: svcSubnetDns
k8s-subnet	Subnet	CIDR Block: 10.0.0.0/28 Routing Table: public-route-table DNS Label: k8sSubnetDns Security List: k8s-security-list
node-subnet	Subnet	CIDR Block: 10.0.10.0/24 Routing Table: private-route-table DNS Label: nodeSubnetDns Security List: node-security-list
k8s-security-list	Security List	Ingress Security Rules Protocol: ICMP Source: 10.0.10.0/24 Description: Path discovery Type, Code: 3, 4 Protocol: TCP Source: 0.0.0.0/0 Description: External access to Kubernetes API endpoint Destination Port Range: 6443 Protocol: TCP Source: 10.0.10.0/24 Description: Kubernetes worker to Kubernetes API endpoint communication Destination Port Range: 6443 Protocol: TCP Source: 10.0.10.0/24 Description: Kubernetes worker to control plane communication Destination Port Range: 12250 Egress Security Rules Protocol: TCP Destination: all-sin-services-in-oracle-services-network Destination Type: Service CIDR Block Destination Port Range: 443 Description: Allow Kubernetes Control Plane to communicate with OKE Protocol: TCP Destination: 10.0.10.0/24 Destination Type: CIDR Block Description: All traffic to worker nodes Protocol: ICMP Destination: 10.0.10.0/24 Destination Type: CIDR Block Description: Path discovery Type, Code: 3, 4
node-security-list	Security List	Ingress Security Rules Protocol: ICMP Source: 10.0.10.0/24 Description: Allow pods on one worker node to communicate with pods on other worker nodes Protocol: ICMP Source: 10.0.0.0/28 Description: Path discovery Type, Code: 3, 4 Protocol: TCP Source: 10.0.0.0/28 Description: TCP access from Kubernetes Control Plane Protocol: TCP Source: 0.0.0.0/0 Description: Inbound SSH traffic to worker nodes Destination Port Range: 22 Egress Security Rules Protocol: "all" Destination: 10.0.10.0/24 Description: Allow pods on one worker node to communicate with pods on other worker nodes Protocol: TCP Destination: 10.0.0.0/28 Destination Port Range: 6443 Description: Access to Kubernetes API Endpoint Protocol: TCP Destination: 10.0.0.0/28 Destination Port Range: 12250 Description: Kubernetes worker to control plane communication Protocol: ICMP Destination: 10.0.0.0/28 Description: Path discovery Type, Code: 3, 4 Protocol: TCP Destination: all-sin-services-in-oracle-services-network Destination Port Range: 443 Destination Type: Service CIDR Block Description: Allow nodes to communicate with OKE to ensure correct start-up and continued functioning Protocol: ICMP Destination: 0.0.0.0/0 Description: ICMP Access from Kubernetes Control Plane Type, Code: 3, 4 Protocol: "all" Destination: 0.0.0.0/0 Description: Worker Nodes access to Internet

Steps

1. Create Virtual Cloud Network

func CreateVcn(vcnDisplayName, compartmentId string) core.Vcn {
	log.Println("CREATE VCN")
	c, clerr := core.NewVirtualNetworkClientWithConfigurationProvider(common.DefaultConfigProvider())
	fmt.Println(clerr)
	ctx := context.Background()

	request := core.CreateVcnRequest{}
	request.CidrBlock = common.String("10.0.0.0/16")
	request.CompartmentId = common.String(compartmentId)
	request.DisplayName = common.String(vcnDisplayName)
	request.DnsLabel = common.String("vcndns")

	r, err := c.CreateVcn(ctx, request)
	helpers.FatalIfError(err)
	return r.Vcn
}

2. Create Internet Gateway

func CreateInternetGateway(vcnId, compartmentId string) core.InternetGateway {
	log.Println("CREATE INTERNET GATEWAY ", vcnId)
	c, clerr := core.NewVirtualNetworkClientWithConfigurationProvider(common.DefaultConfigProvider())
	helpers.FatalIfError(clerr)
	ctx := context.Background()

	createInternetGatewayRequest := core.CreateInternetGatewayRequest{
		CreateInternetGatewayDetails: core.CreateInternetGatewayDetails{
			CompartmentId: common.String(compartmentId),
			VcnId:         common.String(vcnId),
			IsEnabled:     common.Bool(true),
		},
	}

	igw, err := c.CreateInternetGateway(ctx, createInternetGatewayRequest)
	helpers.FatalIfError(err)

	return igw.InternetGateway
}

3. Create NAT Gateway

func CreateNatGateway(vcnId, compartmentId string) core.NatGateway {
	log.Println("CREATE NAT GATEWAY ", vcnId)
	c, clerr := core.NewVirtualNetworkClientWithConfigurationProvider(common.DefaultConfigProvider())
	helpers.FatalIfError(clerr)
	ctx := context.Background()

	createNatGatewayRequest := core.CreateNatGatewayRequest{
		CreateNatGatewayDetails: core.CreateNatGatewayDetails{
			CompartmentId: common.String(compartmentId),
			VcnId:         common.String(vcnId),
		},
	}

	nat, err := c.CreateNatGateway(ctx, createNatGatewayRequest)
	helpers.FatalIfError(err)

	return nat.NatGateway
}

4. Create Service Gateway

func CreateServiceGateway(vcnId, compartmentId string) core.ServiceGateway {
	log.Println("CREATE SERVICE GATEWAY ", vcnId)
	c, clerr := core.NewVirtualNetworkClientWithConfigurationProvider(common.DefaultConfigProvider())
	helpers.FatalIfError(clerr)
	ctx := context.Background()

	createServiceGatewayRequest := core.CreateServiceGatewayRequest{
		CreateServiceGatewayDetails: core.CreateServiceGatewayDetails{
			CompartmentId: common.String(compartmentId),
			VcnId:         common.String(vcnId),
			Services:      []core.ServiceIdRequestDetails{},
		},
	}

	sgw, err := c.CreateServiceGateway(ctx, createServiceGatewayRequest)
	helpers.FatalIfError(err)

	return sgw.ServiceGateway
}

5. Create Private Route Table

func CreatePrivateRouteTable(vcnId, compartmentId, natId, serviceId string) core.RouteTable {
	log.Println("CREATE PRIVATE ROUTE TABLE ", vcnId)
	c, clerr := core.NewVirtualNetworkClientWithConfigurationProvider(common.DefaultConfigProvider())
	helpers.FatalIfError(clerr)
	ctx := context.Background()

	createRouteTableRequest := core.CreateRouteTableRequest{
		CreateRouteTableDetails: core.CreateRouteTableDetails{
			CompartmentId: common.String(compartmentId),
			VcnId:         common.String(vcnId),
			DisplayName:   common.String("private-route-table"),
			RouteRules: []core.RouteRule{
				{
					NetworkEntityId: common.String(natId), // NAT gateway id
					Description:     common.String("traffic to the internet"),
					Destination:     common.String("0.0.0.0/0"),
					DestinationType: core.RouteRuleDestinationTypeCidrBlock,
				},
				{
					NetworkEntityId: common.String(serviceId), // service gateway id
					Description:     common.String("traffic to OCI services"),
					Destination:     common.String("all-sin-services-in-oracle-services-network"),
					DestinationType: core.RouteRuleDestinationTypeServiceCidrBlock,
				},
			},
		},
	}

	rt, err := c.CreateRouteTable(ctx, createRouteTableRequest)
	helpers.FatalIfError(err)

	return rt.RouteTable
}

6. Create Public Route Table

func CreatePublicRouteTable(vcnId, compartmentId, igwId string) core.RouteTable {
	log.Println("CREATE PUBLIC ROUTE TABLE ", vcnId)
	c, clerr := core.NewVirtualNetworkClientWithConfigurationProvider(common.DefaultConfigProvider())
	helpers.FatalIfError(clerr)
	ctx := context.Background()

	createRouteTableRequest := core.CreateRouteTableRequest{
		CreateRouteTableDetails: core.CreateRouteTableDetails{
			CompartmentId: common.String(compartmentId),
			VcnId:         common.String(vcnId),
			DisplayName:   common.String("public-route-table"),
			RouteRules: []core.RouteRule{
				{
					NetworkEntityId: common.String(igwId), // internet gateway id
					Description:     common.String("traffic to/from internet"),
					Destination:     common.String("0.0.0.0/0"),
					DestinationType: core.RouteRuleDestinationTypeCidrBlock,
				},
			},
		},
	}

	rt, err := c.CreateRouteTable(ctx, createRouteTableRequest)
	helpers.FatalIfError(err)

	return rt.RouteTable
}

7. Create K8s Security List

func CreateK8sSecurityList(vcnId, compartmentId string) core.SecurityList {
	log.Println("CREATE K8S SECURITY LIST ", vcnId)
	c, clerr := core.NewVirtualNetworkClientWithConfigurationProvider(common.DefaultConfigProvider())
	helpers.FatalIfError(clerr)
	ctx := context.Background()

	createSecurityListRequest := core.CreateSecurityListRequest{
		CreateSecurityListDetails: core.CreateSecurityListDetails{
			CompartmentId: common.String(compartmentId),
			VcnId:         common.String(vcnId),
			DisplayName:   common.String("k8s-security-list"),
			IngressSecurityRules: []core.IngressSecurityRule{
				{
					Protocol:    common.String("1"), // ICMP
					Source:      common.String("10.0.10.0/24"),
					Description: common.String("Path discovery"),
					IcmpOptions: &core.IcmpOptions{
						Type: common.Int(3),
						Code: common.Int(4),
					},
				},
				{
					Protocol:    common.String("6"), // TCP
					Source:      common.String("0.0.0.0/0"),
					Description: common.String("External access to Kubernetes API endpoint"),
					TcpOptions: &core.TcpOptions{
						DestinationPortRange: &core.PortRange{
							Max: common.Int(6443),
							Min: common.Int(6443),
						},
					},
				},
				{
					Protocol:    common.String("6"), // TCP
					Source:      common.String("10.0.10.0/24"),
					Description: common.String("Kubernetes worker to Kubernetes API endpoint communication"),
					TcpOptions: &core.TcpOptions{
						DestinationPortRange: &core.PortRange{
							Max: common.Int(6443),
							Min: common.Int(6443),
						},
					},
				},
				{
					Protocol:    common.String("6"), // TCP
					Source:      common.String("10.0.10.0/24"),
					Description: common.String("Kubernetes worker to control plane communication"),
					TcpOptions: &core.TcpOptions{
						DestinationPortRange: &core.PortRange{
							Max: common.Int(12250),
							Min: common.Int(12250),
						},
					},
				},
			},
			EgressSecurityRules: []core.EgressSecurityRule{
				{
					Protocol:        common.String("6"), // TCP
					Description:     common.String("Allow Kubernetes Control Plane to communicate with OKE"),
					Destination:     common.String("all-sin-services-in-oracle-services-network"),
					DestinationType: core.EgressSecurityRuleDestinationTypeServiceCidrBlock,
					TcpOptions: &core.TcpOptions{
						DestinationPortRange: &core.PortRange{
							Max: common.Int(443),
							Min: common.Int(443),
						},
					},
				},
				{
					Protocol:        common.String("6"), // TCP
					Description:     common.String("All traffic to worker nodes"),
					Destination:     common.String("10.0.10.0/24"),
					DestinationType: core.EgressSecurityRuleDestinationTypeCidrBlock,
				},
				{
					Protocol:        common.String("1"), // ICMP
					Description:     common.String("Path discovery"),
					Destination:     common.String("10.0.10.0/24"),
					DestinationType: core.EgressSecurityRuleDestinationTypeCidrBlock,
					IcmpOptions: &core.IcmpOptions{
						Type: common.Int(3),
						Code: common.Int(4),
					},
				},
			},
		},
	}

	s, err := c.CreateSecurityList(ctx, createSecurityListRequest)
	helpers.FatalIfError(err)

	return s.SecurityList
}

8. Create Node Security List

func CreateNodeSecurityList(vcnId, compartmentId string) core.SecurityList {
	log.Println("CREATE NODE SECURITY LIST ", vcnId)
	c, clerr := core.NewVirtualNetworkClientWithConfigurationProvider(common.DefaultConfigProvider())
	helpers.FatalIfError(clerr)
	ctx := context.Background()

	createSecurityListRequest := core.CreateSecurityListRequest{
		CreateSecurityListDetails: core.CreateSecurityListDetails{
			CompartmentId: common.String(compartmentId),
			VcnId:         common.String(vcnId),
			DisplayName:   common.String("node-security-list"),
			IngressSecurityRules: []core.IngressSecurityRule{
				{
					Protocol:    common.String("all"), // ICMP
					Source:      common.String("10.0.10.0/24"),
					Description: common.String("Allow pods on one worker node to communicate with pods on other worker nodes"),
				},
				{
					Protocol:    common.String("1"), // ICMP
					Source:      common.String("10.0.0.0/28"),
					Description: common.String("Path discovery"),
					IcmpOptions: &core.IcmpOptions{
						Type: common.Int(3),
						Code: common.Int(4),
					},
				},
				{
					Protocol:    common.String("6"), // TCP
					Source:      common.String("10.0.0.0/28"),
					Description: common.String("TCP access from Kubernetes Control Plane"),
				},
				{
					Protocol:    common.String("6"), // TCP
					Source:      common.String("0.0.0.0/0"),
					Description: common.String("Inbound SSH traffic to worker nodes"),
					TcpOptions: &core.TcpOptions{
						DestinationPortRange: &core.PortRange{
							Max: common.Int(22),
							Min: common.Int(22),
						},
					},
				},
			},
			EgressSecurityRules: []core.EgressSecurityRule{
				{
					Protocol:    common.String("all"),
					Description: common.String("Allow pods on one worker node to communicate with pods on other worker nodes"),
					Destination: common.String("10.0.10.0/24"),
				},
				{
					Protocol:    common.String("6"), // TCP
					Description: common.String("Access to Kubernetes API Endpoint"),
					Destination: common.String("10.0.0.0/28"),
					TcpOptions: &core.TcpOptions{
						DestinationPortRange: &core.PortRange{
							Max: common.Int(6443),
							Min: common.Int(6443),
						},
					},
				},
				{
					Protocol:    common.String("6"), // TCP
					Description: common.String("Kubernetes worker to control plane communication"),
					Destination: common.String("10.0.0.0/28"),
					TcpOptions: &core.TcpOptions{
						DestinationPortRange: &core.PortRange{
							Max: common.Int(12250),
							Min: common.Int(12250),
						},
					},
				},
				{
					Protocol:    common.String("1"), // ICMP
					Description: common.String("Path discovery"),
					Destination: common.String("10.0.0.0/28"),
					IcmpOptions: &core.IcmpOptions{
						Type: common.Int(3),
						Code: common.Int(4),
					},
				},
				{
					Protocol:        common.String("6"), // TCP
					Description:     common.String("Allow nodes to communicate with OKE to ensure correct start-up and continued functioning"),
					Destination:     common.String("all-sin-services-in-oracle-services-network"),
					DestinationType: core.EgressSecurityRuleDestinationTypeServiceCidrBlock,
					TcpOptions: &core.TcpOptions{
						DestinationPortRange: &core.PortRange{
							Max: common.Int(443),
							Min: common.Int(443),
						},
					},
				},
				{
					Protocol:    common.String("1"), // ICMP
					Description: common.String("ICMP Access from Kubernetes Control Plane"),
					Destination: common.String("0.0.0.0/0"),
					IcmpOptions: &core.IcmpOptions{
						Type: common.Int(3),
						Code: common.Int(4),
					},
				},
				{
					Protocol:    common.String("all"),
					Description: common.String("Worker Nodes access to Internet"),
					Destination: common.String("0.0.0.0/0"),
				},
			},
		},
	}

	s, err := c.CreateSecurityList(ctx, createSecurityListRequest)
	helpers.FatalIfError(err)

	return s.SecurityList
}

9. Create Subnets

func CreateSubnet(displayName *string, cidrBlock *string, dnsLabel *string, availableDomain *string, vcn core.Vcn, routeTable core.RouteTable, securityList *core.SecurityList) core.Subnet {
	log.Println("CREATE SUBNET ", *displayName)
	c, clerr := core.NewVirtualNetworkClientWithConfigurationProvider(common.DefaultConfigProvider())
	helpers.FatalIfError(clerr)
	ctx := context.Background()

	request := core.CreateSubnetRequest{}
	request.AvailabilityDomain = availableDomain
	request.CompartmentId = common.String(compartmentId)
	request.CidrBlock = cidrBlock
	request.DisplayName = displayName
	request.DnsLabel = dnsLabel
	request.RequestMetadata = helpers.GetRequestMetadataWithDefaultRetryPolicy()
	request.VcnId = vcn.Id
	request.RouteTableId = routeTable.Id
	if securityList != nil {
		log.Println("SUBNET SECURITY LIST ID:", *securityList.Id)
		request.SecurityListIds = []string{*securityList.Id}
	}

	r, err := c.CreateSubnet(ctx, request)
	helpers.FatalIfError(err)
	log.Println("Subnet created")

	// retry condition check, stop until return true
	pollUntilAvailable := func(r common.OCIOperationResponse) bool {
		if converted, ok := r.Response.(core.GetSubnetResponse); ok {
			log.Println(converted.LifecycleState)
			return converted.LifecycleState != core.SubnetLifecycleStateAvailable
		}
		return true
	}

	pollGetRequest := core.GetSubnetRequest{
		SubnetId:        r.Id,
		RequestMetadata: helpers.GetRequestMetadataWithCustomizedRetryPolicy(pollUntilAvailable),
	}

	// wait for lifecyle become running
	_, pollErr := c.GetSubnet(ctx, pollGetRequest)
	helpers.FatalIfError(pollErr)

	return r.Subnet
}

svcSubnet := CreateSubnet(&subnetDisplayName3, common.String("10.0.20.0/24"), common.String("svcSubnetDns"), nil, vcn, publicRouteTable, nil) // svc subnet

k8sSecurityList := CreateK8sSecurityList(*vcn.Id, compartmentId)
k8sSubnet := CreateSubnet(&subnetDisplayName1, common.String("10.0.0.0/28"), common.String("k8sSubnetDns"), nil, vcn, publicRouteTable, &k8sSecurityList)

nodeSecurityList := CreateNodeSecurityList(*vcn.Id, compartmentId)
_ = CreateSubnet(&subnetDisplayName2, common.String("10.0.10.0/24"), common.String("nodeSubnetDns"), nil, vcn, privateRouteTable, &nodeSecurityList)

10. Create Cluster

func CreateCluster(vcnId, compartmentId, svcSubnetId, displayName, kubernetesVersion string) containerengine.CreateClusterResponse {
	log.Println("CREATE CLUSTER")

	ctx := context.Background()
	c, clerr := containerengine.NewContainerEngineClientWithConfigurationProvider(common.DefaultConfigProvider())
	helpers.FatalIfError(clerr)
	createClusterRequest := containerengine.CreateClusterRequest{
		CreateClusterDetails: containerengine.CreateClusterDetails{
			Name:              common.String(displayName),
			CompartmentId:     common.String(compartmentId),
			VcnId:             common.String(vcnId),
			KubernetesVersion: common.String(kubernetesVersion),
			Options: &containerengine.ClusterCreateOptions{
				ServiceLbSubnetIds: []string{svcSubnetId},
			},
		},
	}
	resp, err := c.CreateCluster(ctx, createClusterRequest)
	helpers.FatalIfError(err)

	return resp
}

11. Migrate to VCN-Native Cluster

func MigrateToVcnNativeCluster(clusterId, k8sSubnetId string) containerengine.ClusterMigrateToNativeVcnResponse {
	log.Println("MIGRATE CLUSTER TO NATIVE-VCN")
	ctx := context.Background()
	c, clerr := containerengine.NewContainerEngineClientWithConfigurationProvider(common.DefaultConfigProvider())
	helpers.FatalIfError(clerr)
	migrateRequest := containerengine.ClusterMigrateToNativeVcnRequest{
		ClusterId: &clusterId,
		ClusterMigrateToNativeVcnDetails: containerengine.ClusterMigrateToNativeVcnDetails{
			EndpointConfig: &containerengine.ClusterEndpointConfig{
				SubnetId:          &k8sSubnetId,
				IsPublicIpEnabled: common.Bool(true),
			},
		},
	}
	resp, err := c.ClusterMigrateToNativeVcn(ctx, migrateRequest)
	helpers.FatalIfError(err)

	return resp
}

12. Create Node Pool

func CreateNodePool(nodePoolName, kubernetesVersion, clusterId, imageId, compartmentId string, subnet core.Subnet, ads identity.ListAvailabilityDomainsResponse) {
	log.Println("CREATE NODE POOL ", nodePoolName)
	size := len(ads.Items)
	createNodePoolRequest := containerengine.CreateNodePoolRequest{
		CreateNodePoolDetails: containerengine.CreateNodePoolDetails{
			CompartmentId:     &compartmentId,
			ClusterId:         &clusterId,
			Name:              &nodePoolName,
			KubernetesVersion: &kubernetesVersion,
			NodeShape:         common.String("VM.Standard.E3.Flex"),
			NodeShapeConfig: &containerengine.CreateNodeShapeConfigDetails{
				Ocpus: common.Float32(4),
			},
			NodeConfigDetails: &containerengine.CreateNodePoolNodeConfigDetails{
				Size:             &size,
				PlacementConfigs: make([]containerengine.NodePoolPlacementConfigDetails, 0, size),
			},
			InitialNodeLabels: []containerengine.KeyValue{{Key: common.String("name"), Value: common.String(nodePoolName)}},
			NodeSourceDetails: containerengine.NodeSourceViaImageDetails{ImageId: common.String(imageId)},
		},
	}

	for i := 0; i < len(ads.Items); i++ {
		createNodePoolRequest.NodeConfigDetails.PlacementConfigs = append(createNodePoolRequest.NodeConfigDetails.PlacementConfigs, containerengine.NodePoolPlacementConfigDetails{
			AvailabilityDomain: ads.Items[i].Name,
			SubnetId:           subnet.Id,
		})
	}

	c, clerr := containerengine.NewContainerEngineClientWithConfigurationProvider(common.DefaultConfigProvider())
	helpers.FatalIfError(clerr)

	ctx := context.Background()
	createNodePoolResponse, err := c.CreateNodePool(ctx, createNodePoolRequest)
	helpers.FatalIfError(err)
	fmt.Println("creating nodepool")

	waitUntilWorkRequestComplete(c, createNodePoolResponse.OpcWorkRequestId)
	fmt.Println("nodepool created")
}

Name		Name	Last commit message	Last commit date
Latest commit History 5 Commits
helper		helper
.env		.env
README.md		README.md
go.mod		go.mod
go.sum		go.sum
main.go		main.go

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Repository files navigation

Author

Table of Contents

VCN Rough Sketch

Cluster Specs

Node Pool Specs

VCN Specs

VCN Components

Steps

1. Create Virtual Cloud Network

2. Create Internet Gateway

3. Create NAT Gateway

4. Create Service Gateway

5. Create Private Route Table

6. Create Public Route Table

7. Create K8s Security List

8. Create Node Security List

9. Create Subnets

10. Create Cluster

11. Migrate to VCN-Native Cluster

12. Create Node Pool

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azhry/oracle-kubernetes-engine

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Author

Table of Contents

VCN Rough Sketch

Cluster Specs

Node Pool Specs

VCN Specs

VCN Components

Steps

1. Create Virtual Cloud Network

2. Create Internet Gateway

3. Create NAT Gateway

4. Create Service Gateway

5. Create Private Route Table

6. Create Public Route Table

7. Create K8s Security List

8. Create Node Security List

9. Create Subnets

10. Create Cluster

11. Migrate to VCN-Native Cluster

12. Create Node Pool

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