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Examples

Infra GitOps using RCTL

Here are some of the examples to scale an existing cluster through Infra GitOps using RCTL

Below is a sample yaml file with Auto create CNI option.

kind: Cluster
metadata:
  name: demo-eks1
  project: defaultproject
spec:
  blueprint: default
  blueprintversion: 1.13.0
  cloudprovider: gk-eks
  cniparams:
    customCniCidr: 100.0.0.0/24
  cniprovider: aws-cni
  proxyconfig: {}
  type: eks
---
apiVersion: rafay.io/v1alpha5
kind: ClusterConfig
metadata:
  name: demo-eks1
  region: us-west-1
  version: "1.19"
nodeGroups:
- amiFamily: AmazonLinux2
  desiredCapacity: 2
  iam:
    withAddonPolicies:
      autoScaler: true
      imageBuilder: true
  instanceType: t3.xlarge
  maxSize: 2
  minSize: 1
  name: self-mn
  volumeSize: 80
  volumeType: gp3
- amiFamily: AmazonLinux2
  desiredCapacity: 1
  iam:
    withAddonPolicies:
      autoScaler: true
      imageBuilder: true
  instanceType: t3.xlarge
  maxSize: 2
  minSize: 1
  name: ng-72199bd8
  volumeSize: 80
  volumeType: gp3
vpc:
  cidr: 192.168.0.0/16
  clusterEndpoints:
    privateAccess: true
    publicAccess: false
  nat:
    gateway: Single

For Manual CNI configuration, provide the below details in the Yaml file for CNI Parameters

cniparams:
  customCniCrdSpec:
    us-west-2a:
    - securityGroups:
      - sg-05a75c401bd421a7f
      - sg-07a65c401bd543a7f
      subnet: subnet-041166d6499651fdc
    us-west-2b:
    - securityGroups:
      - sg-05a75c765bd421a9f
      - sg-05a75c323de421a9e
      subnet: subnet-08dfb5d33b80d2b17

Update Cloud Provider

Use the command ./rctl apply -f demo-eks1.yaml

Expected output (with a task id):

Cluster: demo-eks1
{
  "taskset_id": "d2w0em8",
  "operations": [
    {
      "operation": "CloudProviderUpdation",
      "resource_name": "demo-eks1",
      "status": "PROVISION_TASK_STATUS_PENDING"
    }
  ],
  "comments": "The status of the operations can be fetched using taskset_id",
  "status": "PROVISION_TASKSET_STATUS_PENDING"
}

To know the status of the cloud provider apply operation, enter the below command with the generated task id

./rctl status apply d2w0em8

Expected Output

{
  "taskset_id": "d2w0em8",
  "operations": [
    {
      "operation": "CloudProviderUpdation",
      "resource_name": "demo-eks1",
      "status": "PROVISION_TASK_STATUS_SUCCESS"
    }
  ],
  "comments": "Configuration is applied to the cluster successfully",
  "status": "PROVISION_TASKSET_STATUS_COMPLETE"

Update Blueprint

Use the command ./rctl apply -f demo-eks1.yaml

Expected output (with a task id):

Cluster: eks-ap-eks1
{
  "taskset_id": "dk34v2n",
  "operations": [
    {
      "operation": "BlueprintUpdation",
      "resource_name": "demo-eks1",
      "status": "PROVISION_TASK_STATUS_INPROGRESS"
    }
  ],
  "comments": "Configuration is being applied to the cluster",
  "status": "PROVISION_TASKSET_STATUS_INPROGRESS"
}

To know the status of the blueprint apply operation, enter the below command with the generated task id

./rctl status apply dk34v2n

Expected Output

{
  "taskset_id": "dk34v2n",
  "operations": [
    {
      "operation": "BlueprintUpdation",
      "resource_name": "demo-eks1",
      "status": "PROVISION_TASK_STATUS_SUCCESS"
    }
  ],
  "comments": "Configuration is applied to the cluster successfully",
  "status": "PROVISION_TASKSET_STATUS_COMPLETE""

Changes in Controller

On successful Blueprint apply operation, user can view the changes reflecting in Controller

Apply Blueprint

Change Cluster Endpoint

Use the command ./rctl apply -f demo-eks1.yaml

Expected output (with a task id):

Cluster: eks-ap-eks1
{
  "taskset_id": "j2q48k9",
  "operations": [
    {
      "operation": "UpdatingClusterEndpoints",
      "resource_name": "demo-eks1",
      "status": "PROVISION_TASK_STATUS_PENDING"
    }
  ],
  "comments": "The status of the operations can be fetched using taskset_id",
  "status": "PROVISION_TASKSET_STATUS_PENDING"
}

To know the status of the change cluster endpoint apply operation, enter the below command with the generated task id

./rctl status apply dk34v2n

Expected Output

{
  "taskset_id": "j2q48k9",
  "operations": [
    {
      "operation": "ClusterEndpointsUpdation",
      "resource_name": "demo-eks1",
      "status": "PROVISION_TASK_STATUS_SUCCESS"
    }
  ],
  "comments": "Configuration is applied to the cluster successfully",
  "status": "PROVISION_TASKSET_STATUS_COMPLETE""

Changes in Controller

On successful Cluster Endpoint apply operation, user can view the changes reflecting in Controller

Apply Blueprint

Cluster and Node Group Labels and Tags

When provisioning a cluster, users can include Labels and Tags via RCTL using the Cluster Configuration YAML file. An example of the cluster spec YAML file with managed node group is shown below.

To add a Tag to every resource in a cluster (like nodes and service accounts), add the Tag to the metadata section.

If duplicate tags are used in the metadata and node sections of the YAML file, the node tag will be applied to the nodes. For example, if x: y is in the metadata section and x: z is in the node section, the node tag will be x: z.

Note

While you can create tags for self managed node groups (nodeGroups) when provisioning a cluster, you cannot update tags for self managed node groups after the cluster is deployed (post deployment). This includes updating cluster level tags post deployment (tags in the metadata section).

apiVersion: rafay.io/v1alpha5
kind: ClusterConfig
metadata:
  name: demo-eks1
  region: us-west-1
  version: "1.20"
  tags:
    x: y
managedNodeGroups:
- amiFamily: AmazonLinux2
  name: managed-ng-1
  desiredCapacity: 1
  maxSize: 2
  minSize: 1
  instanceType: t3.xlarge
  labels:
    role: control-plane
  tags:
    nodegroup-role: control-plane

Post Cluster provisioning, users can update Managed Node group Labels and Tags via RCTL using the Cluster Configuration Yaml file. An illustrative example of the updated cluster spec YAML file with managed node group is shown below.

Note

While you can create tags for self managed node groups (nodeGroups) when provisioning a cluster, you cannot update tags for self managed node groups after the cluster is deployed (post deployment). This includes updating cluster level tags post deployment (tags in the metadata section).

apiVersion: rafay.io/v1alpha5
kind: ClusterConfig
metadata:
  name: demo-eks1
  region: us-west-1
  version: "1.20"
  tags:
    x: y
managedNodeGroups:
- amiFamily: AmazonLinux2
  name: managed-ng-1
  desiredCapacity: 1
  maxSize: 2
  minSize: 1
  instanceType: t3.xlarge
  labels:
    role: worker
  tags:
    nodegroup-role: worker

Update Node group Labels

Modify the managed Node group labels as per the requirement and use the below command to apply the changes.

./rctl apply -f demo-eks1.yaml

Example

./rctl apply -f demo-eks1.yaml

Output

Cluster: demo-eks1
{
 "taskset_id": "lk5xw2e",
 "operations": [
  {
   "operation": "NodegroupUpdateLabels",
   "resource_name": "ng-b0ac64e3",
   "status": "PROVISION_TASK_STATUS_PENDING"
  }
 ],
 "comments": "The status of the operations can be fetched using taskset_id",
 "status": "PROVISION_TASKSET_STATUS_PENDING"
}

Update Node group Tags

Modify the managed Node group tags as per the requirement and use the below command to apply the changes

./rctl apply -f demo-eks1.yaml

Example

./rctl apply -f demo-eks1.yaml

Output

Cluster: demo-eks1
{
 "taskset_id": "pz24nmy",
 "operations": [
  {
   "operation": "NodegroupUpdateTags",
   "resource_name": "ng-b0ac64e3",
   "status": "PROVISION_TASK_STATUS_PENDING"
  }
 ],
 "comments": "The status of the operations can be fetched using taskset_id",
 "status": "PROVISION_TASKSET_STATUS_PENDING"
}

Upgrade Nodegroup K8s Version

Post Cluster provisioning, users can upgrade a specific nodegroup K8s version via RCTL using the Cluster Configuration Yaml file.

An illustrative example of the cluster spec YAML file is shown below and the highlighted parameters identifies the nodegroup K8s version details

apiVersion: rafay.io/v1alpha5
kind: ClusterConfig
managedNodeGroups:
- amiFamily: AmazonLinux2
  desiredCapacity: 1
  iam:
    withAddonPolicies:
      autoScaler: true
  instanceType: t3.large
  maxSize: 1
  minSize: 1
  name: ng-d38d7716
  version: "1.22"
  volumeSize: 80
  volumeType: gp3
metadata:
  name: demo_ngupgrade
  region: us-west-2
  version: "1.22"
vpc:
  cidr: 192.168.0.0/16
  clusterEndpoints:
    privateAccess: true
    publicAccess: false
  nat:
    gateway: Single

Use the below command to apply the changes

./rctl apply -f <file_name.yaml>

Upgrade Custom AMI

Users can also upgrade the custom AMIs via RCTL using the Cluster Configuration Yaml file.

An illustrative example of the cluster spec YAML file is shown below and the highlighted parameters identifies the custom AMI details

apiVersion: rafay.io/v1alpha5
kind: ClusterConfig
managedNodeGroups:
- ami: ami-0123f8d52a516f19d
  desiredCapacity: 1
  iam:
    withAddonPolicies:
      autoScaler: true
  instanceType: t3.large
  maxSize: 1
  minSize: 1
  name: ng-590b8506
  volumeSize: 80
  volumeType: gp3
metadata:
  name: demo_amiupgrade
  region: us-west-2
  version: "1.22"
vpc:
  cidr: 192.168.0.0/16
  clusterEndpoints:
    privateAccess: true
    publicAccess: false
  nat:
    gateway: Single

Use the below command to apply the changes

./rctl apply -f <file_name.yaml>

Important

If a nodegroup version drifts to a version higher than the control plane, then control plane upgrades will be blocked. To recover from this, pull back the nodegroup to the same version (old AMI perhaps) as control plane and then upgrade control plane

Get Node Group Count

To get the node group and number of current nodes of that node group in a cluster, use the below command

./rctl get cluster <cluster-name> -o json -p <project name> |jq -S '.nodegroups[] | .name, .nodes '

Example with output:

./rctl get cluster demo-unified-eks -o json -p unified |jq -S '.nodegroups[] | .name, .nodes '
"ng-c3e5daab"
3

Scale Node Group

Use the below command to scale the node group in a cluster

./rctl scale ng <node-group name> <cluster-name> --desired-nodes 1 -p <project name>