DCS.Redis

Element Description

Distributed Cache Service (DCS) is an online, distributed, in-memory cache service. It is reliable, scalable, usable out of the box, and easy to manage. Compatible with Redis and Memcached, DCS supports three instance types: single-node, master/standby, and cluster. It can meet your requirements for high read/write performance and fast data access.

Element Properties

**Table 1** Property Description
Property	Mandatory	Descripiton
vpcId	Yes	ID of the VPC to which the DCS instance belongs Type: Cloud.VPC.VPC.Id Value Description: Use the ID of an existing VPC or a new VPC. To use a new VPC ID, you need to define the VPC object in the template and establish the dependency. You are advised to drag the object to the VPC to automatically establish the dependency. Value Constraint: The value must satisfy the UUID generation rule. Suggestion: 1. Use the get_input function to set this field, and then the value can be automatically selected on the AOS console. 2. Use the get_reference function to obtain the VPC.VPC element created by the stack. 3. Obtain the ID of the created VPC from the VPC console.
capacity	Yes	Capacity of the DCS instance Type: integer Value Description: Customize the value. Default: 2 Value Constraint: Currently, the value can only be 2, 4, 8, 16, 32, 64, 128, 256, 512, or 1024. Suggestion: Use the default value.
description	No	Description of the DCS instance Type: string Value Description: Customize the value. Value Constraint: {u'max_length': 1024}
name	No	Name of the DCS instance Type: string Value Description: Customize the value. Value Constraint: The value must start with a letter. Only letters, digits, underscores (_), and hyphens (-) are allowed.
securityGroupId	Yes	ID of the security group used by the DCS instance Type: Cloud.VPC.SecurityGroup.Id Value Description: Obtains the security group ID from the VPC service or connects to the VPC.SecurityGroup to automatically generate a security group ID. Suggestion: 1. Use the get_input function to set this field, and then the value can be automatically selected on the AOS console. 2. Use the get_reference function to obtain the VPC.SecurityGroup element created by the stack. 3. Obtain the ID of the created security group from the VPC console.
availablityZone1	No	AZ1 to which the DCS instance belongs Type: Cloud.ECS.AvailabilityZone.Name Value Description: AZ1 to which the DCS instance belongs. The AZ can be automatically selected on the AOS console. You need to specify the AZ name, for example, ae-ad-1a. For details, see the Regions and Endpoints page. Value Constraint: The value varies depending on regions. Suggestion: Use the get_input function to set this field, and then the value can be automatically selected on the AOS console.
instanceMode	Yes	Type of the DCS instance Type: string Default: single Value Constraint: Currently, the value can only be single, HA, or cluster. Suggestion: Use the default value.
availablityZone2	No	AZ2 to which the DCS instance belongs. AZ2 is required for creating master/standby DCS instances. Type: Cloud.ECS.AvailabilityZone.Name Value Description: AZ2 to which the DCS instance belongs. The AZ can be automatically selected on the AOS console and must be different from AZ1. You need to specify the AZ name. For details, see the Regions and Endpoints page. Value Constraint: The value varies depending on regions. Suggestion: Use the get_input function to set this field, and then the value can be automatically selected on the AOS console.
instanceBackupPolicy	No	Backup plan of the DCS instance Type: DCS.InstanceBackupPolicy Value Description: Customize the value. Default: {u'extendParam': {u'backupAt': [], u'beginAt': u'00', u'periodType': u'weekly'}, u'backupType': u'auto', u'saveDays': 1} Suggestion: Use the default value.
maintainBegin	No	Start time of the maintenance time window Type: string Default: 02:00:00 Value Constraint: Currently, the value can only be 02:00, 06:00, 10:00, 14:00, 18:00, or 22:00. Suggestion: Use the default value.
subnetId	Yes	Subnet ID of the DCS instance Type: Cloud.VPC.Subnet.Id Value Description: Use the ID of an existing subnet or a new subnet. To use a new subnet ID, you need to define the subnet object in the template and establish the dependency. You are advised to connect the VPC.Subnet to automatically establish the dependency. Value Constraint: The subnet must correspond to the VPC. Suggestion: 1. Use the get_input function to set this field, and then the value can be automatically selected on the AOS console. 2. Use the get_reference function to obtain the VPC.Subnet element created by the stack. 3. Obtain the ID of the created subnet from the VPC console.
maintainEnd	No	End time of the maintenance time window Type: string Default: 06:00:00 Value Constraint: Currently, the value can only be 06:00, 10:00, 14:00, 18:00, 22:00, or 02:00. Suggestion: Use the default value.
password	Yes	Login password of the DCS instance Type: password Value Description: Customize the value. Value Constraint: 1. The parameter must be written into inputs and set using the get_input function. 2. It must not be a weak password. Enter 6 to 32 characters. Only uppercase and lowercase letters, digits, and special characters `~!@#$%^&()-_=+\\|[{}]:'",<.>/? are allowed. The password must contain at least two types of characters. Suggestion:* You are advised to use the get_input function to obtain the value and avoid plaintext passwords to ensure security.

Relationships Between Elements

**Table 2** Relationship description
Description	Target
Connected	VPC.Subnet
Connected	VPC.SecurityGroup
Inclusion	VPC.VPC

Return Value

Property	Type	Description
refIP	string	Access IP address of the DCS instance
refPort	integer	Access port of the DCS instance
refName	string	Name of the DCS instance
refID	string	ID of the DCS instance
chargeMode	string	Billing mode of the DCS instance

Blueprint Example

tosca_definitions_version: cloud_tosca_version_1_0
inputs:
  dcs-name:
    default: my-dcsinstance
  dcs-description:
    default: dcs service
  dcs-capacity:
    default: 2
  dcs-vpcId:
    default: fdcd13cf-579e-41d6-b2b5-01cda2f37719
  dcs-securityGroupId:
    default: 07f01d47-11fc-4b9b-bce3-f0f47350ad7a
  dcs-subnetId:
    default: 85786d98-06ed-4d33-a85c-572238649029
  dcs-password:
    default: "******"
  dcs-instanceMode:
    default: "single"
node_templates:
  my-dcs:
    type: Cloud.DCS.Redis
    properties:
      name: {get_input: dcs-name}
      description: {get_input: dcs-description}
      capacity: {get_input: dcs-capacity}
      vpcId: {get_input: dcs-vpcId}
      securityGroupId: {get_input: dcs-securityGroupId}
      subnetId: {get_input: dcs-subnetId}
      password: {get_input: dcs-password}
      instanceMode: {get_input: dcs-instanceMode}

Parent topic: List of Elements

Previous topic: CCE.Storage.SFS

Next topic: ECS.CloudServer