Migrating a Node

Function

This API is used to migrate a node from a specified cluster to another cluster. The node can be migrated only between different clusters in the same VPC and project, and the cluster types before and after the migration must be the same.

The URL for cluster management is in the format of https://Endpoint/uri, where uri indicates the resource path for API access.

Constraints

Data can be migrated only between clusters in the same VPC and project.
Data cannot be migrated between CCE Turbo clusters and CCE standard clusters.
Data cannot be migrated between DEC and non-DEC clusters.
Data cannot be migrated between clusters with IPv6 enabled and clusters without IPv6 enabled.
Data can be migrated only to the default node pool of the target cluster.

URI

PUT /api/v3/projects/{project_id}/clusters/{cluster_id}/nodes/operation/migrateto/{target_cluster_id}

**Table 1** Path Parameters
Parameter	Mandatory	Type	Description
project_id	Yes	String	Project ID. For details about how to obtain the value, see How to Obtain Parameters in the API URI.
cluster_id	Yes	String	Cluster ID. For details about how to obtain the value, see How to Obtain Parameters in the API URI.
target_cluster_id	Yes	String	Cluster ID. For details about how to obtain the value, see How to Obtain Parameters in the API URI.

Request Parameters

**Table 2** Request header parameters
Parameter	Mandatory	Type	Description
Content-Type	Yes	String	Message body type (format).
X-Auth-Token	Yes	String	Requests for calling an API can be authenticated using either a token or AK/SK. If token-based authentication is used, this parameter is mandatory and must be set to a user token. For details, see Obtaining a User Token.

**Table 3** Request body parameters
Parameter	Mandatory	Type	Description
apiVersion	No	String	API version. The value is fixed at v3.
kind	No	String	API type. The value is fixed at MigrateNodesTask.
spec	Yes	MigrateNodesSpec object	Configuration data.
status	No	TaskStatus object	Job status.

**Table 4** MigrateNodesSpec
Parameter	Mandatory	Type	Description
os	Yes	String	Operating system type, which must be accurate to the version number. When alpha.cce/NodeImageID is specified, the value of os must be the same as the OS of the custom image.
extendParam	No	MigrateNodeExtendParam object	Extended parameters for node migration.
login	Yes	Login object	Node login mode.
runtime	No	Runtime object	Container runtime
nodes	Yes	Array of NodeItem objects	List of nodes to be operated.

**Table 5** MigrateNodeExtendParam
Parameter	Mandatory	Type	Description
maxPods	No	Integer	Maximum number of pods that can be created on a node, including the default system pods. Value range: 16 to 256. This limit prevents the node from being overloaded of pods.
DockerLVMConfigOverride	No	String	Docker data disk configurations. The disk type of the nodes to be migrated must be the same as that specified during node creation (that is, the value of diskType in DockerLVMConfigOverride must be the same as that specified during node creation). Ensure that the disk types of the nodes selected for a single API call are the same. The following is the default configuration: "DockerLVMConfigOverride":"dockerThinpool=vgpaas/90%VG;kubernetesLV=vgpaas/10%VG;diskType=evs;lvType=linear" The configuration contains the following fields: userLV (optional): size of the user space, for example, vgpaas/20%VG. (Optional) userPath: mount path of the user space, for example, /home/wqt-test. diskType: specifies the disk type. Currently, only evs, hdd, and ssd are supported. lvType: type of the logical volume. Currently, the value can be linear or striped. For example, striped. dockerThinpool: Docker disk size, for example, vgpaas/60%VG. kubernetesLV: Kubelet space size, for example, vgpaas/20%VG.
alpha.cce/preInstall	No	String	Pre-installation script. NOTE: The input value must be Base64-encoded. (Command: echo -n "Content to be encoded" \| base64)
alpha.cce/postInstall	No	String	Post-installation script. NOTE: The input value must be Base64-encoded. (Command: echo -n "Content to be encoded" \| base64)
alpha.cce/NodeImageID	No	String	ID of the user image to run the target OS. When alpha.cce/NodeImageID is specified, the value of os must be the same as the OS of the custom image.

**Table 6** Login
Parameter	Mandatory	Type	Description
sshKey	No	String	Name of the key pair used for login.

**Table 7** UserPassword
Parameter	Mandatory	Type	Description
username	No	String	Login account. Defaults to root.
password	Yes	String	If a username and a password are used to create a node, this field is shielded in the response body. A password must meet the following complexity requirements: Contains 8 to 26 characters. Contains at least three of the following character types: uppercase letters, lowercase letters, digits, and special characters (!@$%^-_=+[{}]:,./?~#) Cannot contain the username or the username spelled backwards. The password* field must be salted during node creation. For details, see Adding a Salt in the password Field When Creating a Node.

**Table 8** Runtime
Parameter	Mandatory	Type	Description
name	No	String	Container runtime. Default value: Clusters earlier than v1.25: The default value is docker. Clusters of v1.25 or later: The default container runtime varies depending on the OS. For nodes running EulerOS 2.5, the default container runtime is docker; for nodes running other OSs, the default container runtime is containerd.

**Table 9** NodeItem
Parameter	Mandatory	Type	Description
uid	Yes	String	Node ID.

**Table 10** TaskStatus
Parameter	Mandatory	Type	Description
jobID	No	String	Job ID, which is used by the caller to query the job progress.

Response Parameters

Status code: 200

**Table 11** Response body parameters
Parameter	Type	Description
apiVersion	String	API version. The value is fixed at v3.
kind	String	API type. The value is fixed at MigrateNodesTask.
spec	MigrateNodesSpec object	Configuration data.
status	TaskStatus object	Job status.

**Table 12** MigrateNodesSpec
Parameter	Type	Description
os	String	Operating system type, which must be accurate to the version number. When alpha.cce/NodeImageID is specified, the value of os must be the same as the OS of the custom image.
extendParam	MigrateNodeExtendParam object	Extended parameters for node migration.
login	Login object	Node login mode.
runtime	Runtime object	Container runtime
nodes	Array of NodeItem objects	List of nodes to be operated.

**Table 13** MigrateNodeExtendParam
Parameter	Type	Description
maxPods	Integer	Maximum number of pods that can be created on a node, including the default system pods. Value range: 16 to 256. This limit prevents the node from being overloaded of pods.
DockerLVMConfigOverride	String	Docker data disk configurations. The disk type of the nodes to be migrated must be the same as that specified during node creation (that is, the value of diskType in DockerLVMConfigOverride must be the same as that specified during node creation). Ensure that the disk types of the nodes selected for a single API call are the same. The following is the default configuration: "DockerLVMConfigOverride":"dockerThinpool=vgpaas/90%VG;kubernetesLV=vgpaas/10%VG;diskType=evs;lvType=linear" The configuration contains the following fields: userLV (optional): size of the user space, for example, vgpaas/20%VG. (Optional) userPath: mount path of the user space, for example, /home/wqt-test. diskType: specifies the disk type. Currently, only evs, hdd, and ssd are supported. lvType: type of the logical volume. Currently, the value can be linear or striped. For example, striped. dockerThinpool: Docker disk size, for example, vgpaas/60%VG. kubernetesLV: Kubelet space size, for example, vgpaas/20%VG.
alpha.cce/preInstall	String	Pre-installation script. NOTE: The input value must be Base64-encoded. (Command: echo -n "Content to be encoded" \| base64)
alpha.cce/postInstall	String	Post-installation script. NOTE: The input value must be Base64-encoded. (Command: echo -n "Content to be encoded" \| base64)
alpha.cce/NodeImageID	String	ID of the user image to run the target OS. When alpha.cce/NodeImageID is specified, the value of os must be the same as the OS of the custom image.

**Table 14** Login
Parameter	Type	Description
sshKey	String	Name of the key pair used for login.

**Table 15** UserPassword
Parameter	Type	Description
username	String	Login account. Defaults to root.
password	String	If a username and a password are used to create a node, this field is shielded in the response body. A password must meet the following complexity requirements: Contains 8 to 26 characters. Contains at least three of the following character types: uppercase letters, lowercase letters, digits, and special characters (!@$%^-_=+[{}]:,./?~#) Cannot contain the username or the username spelled backwards. The password* field must be salted during node creation. For details, see Adding a Salt in the password Field When Creating a Node.

**Table 16** Runtime
Parameter	Type	Description
name	String	Container runtime. Default value: Clusters earlier than v1.25: The default value is docker. Clusters of v1.25 or later: The default container runtime varies depending on the OS. For nodes running EulerOS 2.5, the default container runtime is docker; for nodes running other OSs, the default container runtime is containerd.

**Table 17** NodeItem
Parameter	Type	Description
uid	String	Node ID.

**Table 18** TaskStatus
Parameter	Type	Description
jobID	String	Job ID, which is used by the caller to query the job progress.

Example Requests

Migrate a node running EulerOS 2.5 to another cluster.

PUT /api/v3/projects/{project_id}/clusters/{cluster_id}/nodes/operation/migrateto/{target_cluster_id}

{
  "spec" : {
    "os" : "EulerOS 2.5",
    "login" : {
      "sshKey" : "KeyPair-001"
    },
    "nodes" : [ {
      "uid" : "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"
    }, {
      "uid" : "yyyyyyyy-yyyy-yyyy-yyyy-yyyyyyyyyyyy"
    } ]
  }
}

Migrate a node running EulerOS 2.5 and created using a specified image ID to another cluster.

PUT /api/v3/projects/{project_id}/clusters/{cluster_id}/nodes/operation/migrateto/{target_cluster_id}

{
  "spec" : {
    "os" : "EulerOS 2.5",
    "extendParam" : {
      "alpha.cce/NodeImageID" : "cc697ad7-9563-11e8-8ea7-0255ac106311"
    },
    "login" : {
      "sshKey" : "KeyPair-001"
    },
    "nodes" : [ {
      "uid" : "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"
    }, {
      "uid" : "yyyyyyyy-yyyy-yyyy-yyyy-yyyyyyyyyyyy"
    } ]
  }
}

Example Responses

Status code: 200

The job for migrating a node from a specified cluster to another cluster is successfully delivered.

{
  "spec" : {
    "os" : "EulerOS 2.5",
    "login" : {
      "sshKey" : "KeyPair-001"
    },
    "runtime" : {
      "name" : "docker"
    },
    "nodes" : [ {
      "uid" : "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"
    }, {
      "uid" : "yyyyyyyy-yyyy-yyyy-yyyy-yyyyyyyyyyyy"
    } ]
  },
  "status" : {
    "jobID" : "2ec9b78d-9368-46f3-8f29-d1a95622a568"
  }
}