Creating a Kubernetes Cluster

Context

Creating a Cluster

1. Log in to the CCE console.
   • If you have no clusters, click Buy Cluster on the wizard page.
   • If you have CCE clusters, choose Clusters in the navigation pane, click Buy Cluster and select the CCE standard cluster.

2. On the Buy Cluster page, configure parameters following instructions.

   In this example, a majority of parameters retain default values. Only mandatory parameters are described. For details, see Table 1.

   Table 1 Parameters for creating a cluster

   Parameter	Description
   Basic Settings
   *Cluster Name	Name of the cluster to be created. A cluster name contains 4 to 128 characters starting with a lowercase letter and not ending with a hyphen (-). Only lowercase letters, digits, and hyphens (-) are allowed.
   *Enterprise Project	This parameter is displayed only for enterprise users who have enabled Enterprise Project Management.
   *Cluster Version	Choose the latest version.
   *Cluster Scale	Maximum number of worker nodes that can be managed by the cluster. If you select Nodes: 50, the cluster can manage a maximum of 50 worker nodes.
   Network Settings
   *Network Model	You can select VPC network or Tunnel network. Retain the default value.
   *VPC	VPC where the cluster will be located. If no VPC is available, click Create VPC to create one. After the VPC is created, click the refresh icon.
   *Master Node Subnet	Subnet where master nodes of the cluster are located.
   *Container CIDR Block	CIDR block used by containers. The value determines the maximum number of containers in the cluster. Retain the default value.
   * Pod IP Addresses Reserved for Each Node	The number of container IP addresses that can be allocated to each node (alpha.cce/fixPoolMask) when creating a cluster. This parameter determines the maximum number of pods that can be created on each node.
   *IPv4 Service CIDR Block	CIDR block for Services used by containers in the same cluster to access each other. The value determines the maximum number of Services you can create. The value cannot be changed after creation. Retain the default value.

3. Click Next: Select Add-on. On the page displayed, select the add-ons to be installed during cluster creation.
4. Click Next: Configure Add-on. Retain the default settings.
5. Click Next: Confirm configuration, confirm the displayed cluster resource list, and click Submit.

   It takes about 5 to 10 minutes to create a cluster.

   The created cluster will be displayed on the Clusters page, and the number of nodes in the cluster is 0.

Creating a Node

1. Log in to the CCE console.
2. Click the name of the created cluster to access the cluster console.
3. In the navigation pane, choose Nodes. Click the Nodes tab, click Create Node in the upper right corner, and configure parameters as prompted.

   The following describes only important parameters. For other parameters, retain the defaults.

   Table 2 Parameters for creating a node

   Parameter	Description
   Configurations
   *AZ	Select an AZ for the node as needed. You can select Random.
   *Node Type	Select a node type based on service requirements. Then, the available node flavors will be automatically displayed in the Specifications area for you to select. In this example, Elastic Cloud Server (VM) is selected.
   *Specifications	Select node specifications that best fit your service needs.
   *Container Engine	Select a container engine based on service requirements.
   *OS	Select an OS for the node.
   *Login Mode	If the login mode is Password, the default username is root. Enter the password for logging to the node and confirm the password. Keep the password secure. If you forget the password, the system is unable to retrieve it and you will have to reset the password. If the login mode is Key Pair, select a key pair for logging to the node and select the check box to acknowledge that you have obtained the key file and without this file you will not be able to log in to the node. A key pair is used for identity authentication when you remotely log in to a node. If no key pair is available, click Create Key Pair.
   Storage Settings
   *System Disk	Select the system disk size based on your service requirements. The default value is 50 GiB.
   *Data Disk	Set the data disk size and quantity based on your service requirements. At least one data disk is required for container runtime and Kubelet components. The default value is 100 GiB.
   Network Settings
   VPC/Node Subnet	The node subnet selected during cluster creation is used by default. You can choose another subnet instead.

4. At the bottom of the page, select the node quantity, and click Next: Confirm.
5. Review the node specifications, read the instructions, select I have read and understand the preceding information, and click Submit.

   It takes about 5 to 10 minutes to complete the node creation.

   The created node will be displayed on the Nodes page.