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    ApsaraDB for MyBase:Create a host in an ApsaraDB MyBase for MySQL dedicated cluster

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    ApsaraDB for MyBase:Create a host in an ApsaraDB MyBase for MySQL dedicated cluster

    Last Updated:Apr 02, 2026

    Before you can create database instances on a dedicated cluster, you must add a physical host to the cluster. This topic walks you through the host creation process, including zone placement, storage selection, and network configuration.

    Prerequisites

    Before you begin, ensure that you have:

    Host requirements by edition

    The number of hosts you need depends on the MySQL version and instance edition you plan to deploy.

    Version Edition Minimum hosts required
    MySQL 5.6 High-availability Edition At least 2 hosts with the same storage type (one for the primary instance, one for the secondary)
    MySQL 5.7 High-availability Edition At least 2 hosts with the same storage type
    MySQL 5.7 Master-replica Edition 1 or more hosts across zones (primary instance plus read-only instances)
    MySQL 8.0 High-availability Edition At least 2 hosts with the same storage type
    MySQL 8.0 Master-replica Edition 1 or more hosts across zones (primary instance plus read-only instances)
    Master-replica Edition requires MySQL 5.7 or 8.0. MySQL 5.6 supports High-availability Edition only.

    For host specifications and pricing, see Host specifications and prices of ApsaraDB MyBase for MySQL and ApsaraDB MyBase for PostgreSQL.

    Add a host

    1. Log on to the ApsaraDB for MyBase console.

    2. In the upper-left corner, select the target region.

    3. In the left-side navigation pane, click Hosts, then click Add Host.

    4. Configure the following parameters.

      Basic configuration

      Parameter Suggested value Description
      Region Same as your application The region where the host is created. Defaults to the region selected in step 2.
      Zone Different zone from other hosts The zone for the host. We recommend that you create hosts in different zones to improve availability.
      Database engine MySQL The database engine for the host. Select MySQL.
      Dedicated Cluster Select an existing cluster The cluster to add the host to. If no clusters exist in the selected region, this field is set to Dedicated Cluster Created by Default and the system creates one automatically. Otherwise, select from the available clusters. To create a new cluster first, click go to the ApsaraDB for MyBase console. For details, see Create a dedicated cluster.

      Network configuration

      Parameter Suggested value Description
      VPC VPC of the existing cluster The virtual private cloud (VPC) for the host. If you selected an existing cluster, choose a VPC from that cluster. If the cluster is set to Dedicated Cluster Created by Default and no VPCs exist in the region, this field is set to VPC Created by Default and the system creates one. To create or manage VPCs and vSwitches, click go to the VPC console next to vSwitch. For instructions, see Create a VPC with an IPv4 CIDR block.
      vSwitch vSwitch in the same zone The vSwitch to connect the host to. If a vSwitch exists for the selected VPC and zone, choose one from the list. If none exists, log on to the VPC console to create a vSwitch in the same region and zone as the VPC. If both Dedicated Cluster and VPC are set to their "Created by Default" options, this field is set to vSwitch Created by Default automatically.

      Host configuration

      Parameter Suggested value Description
      Authorization Authorize Now (first time only) Grants the service access to your security groups. The first time you create a host, click Authorize Now. On the Cloud Resource Access Authorization page, click Confirm Authorization Policy to complete the authorization.
      Important

      After authorization, the AliyunRDSDedicatedHostGroupRole role appears on the Roles page of the Resource Access Management (RAM) console. Do not delete this role — if deleted, you must re-authorize before performing any MyBase operations.
      Host Image AliLinux (default) The operating system (OS) image for the host. Defaults to AliLinux.
      Storage Type Local SSD or Enhanced SSD (ESSD) The storage type of the host. You can select Local SSD or Enhanced SSD (ESSD).
      Host Instance Type Based on your workload The instance type of the host.
      Storage Capacity Based on your data volume The storage size of the host. This parameter appears only when Storage Type is set to Local SSD.
      Quantity See Host requirements by edition The number of hosts to create. Refer to the host requirements table to determine how many hosts your deployment needs.
      Duration Match your deployment lifecycle The subscription duration. Select Auto-renewal to automatically renew the host at the same interval upon expiration — for example, a 3-month subscription renews every 3 months.

    5. Click Buy Now. On the Confirm Order page, read and select Terms of Service, then click Pay.

    Manage hosts

    After the host is created, you can manage it from the Hosts page:

    Learn more

    You can join the DingTalk group 32484333 to obtain technical support from database experts, view success stories, and engage with experts on live streams that are provided on a regular basis.

    What's next

    After the host is created, create a MySQL instance on it. See Create an ApsaraDB MyBase for MySQL instance.