As your workload grows, you can upgrade the host specifications in an ApsaraDB MyBase dedicated cluster. This topic explains what to check before upgrading, how upgrade fees are calculated, and how to complete the upgrade.
Prerequisites
Before you begin, ensure that you have:
An ApsaraDB MyBase for MySQL dedicated cluster of the High-availability Edition
A host that uses local SSDs or enhanced SSDs (ESSDs)
A host with specifications listed in the supported upgrade table
Constraints
Host specifications can be upgraded but not downgraded.
Upgrades are only supported within the same instance family. For details, see Instance types of hosts.
Each upgrade must increase both CPU cores and memory — you cannot increase one without the other.
The minimum interval between consecutive upgrades on the same host is 10 minutes.
During an upgrade, the host and all running instances restart. This triggers a primary/secondary switchover, which may cause one or two brief service interruptions. Restart duration depends on how long the switchover takes.
The Upgrade Specifications option is unavailable in the following situations:
An instance is being created on the host.
An instance on the host is being migrated.
The host is locked due to expiration.
Host specifications that can be upgraded
| Host category | Instance family | Host specification | Host instance type |
|---|---|---|---|
| General-purpose (ESSD) | g6 | 8 cores, 32 GB, ESSD | rds.g6.2xlarge |
| General-purpose (ESSD) | g6 | 16 cores, 64 GB, ESSD | rds.g6.4xlarge |
| General-purpose (ESSD) | g6 | 32 cores, 128 GB, ESSD | rds.g6.8xlarge |
| General-purpose (ESSD) | g6 | 52 cores, 192 GB, ESSD | rds.g6.13xlarge |
| General-purpose (ESSD) | g5 | 64 cores, 256 GB, ESSD | rds.g5.16xlarge |
| Memory-optimized (ESSD) | r6 | 8 cores, 64 GB, ESSD | rds.r6.2xlarge |
| Memory-optimized (ESSD) | r6 | 16 cores, 128 GB, ESSD | rds.r6.4xlarge |
| Memory-optimized (ESSD) | r6 | 32 cores, 256 GB, ESSD | rds.r6.8xlarge |
| Memory-optimized (ESSD) | r6 | 52 cores, 384 GB, ESSD | rds.r6.13xlarge |
| Memory-optimized (ESSD) | r5 | 64 cores, 512 GB, ESSD | rds.r5.16xlarge |
| Compute-optimized (ESSD) | c6 | 8 cores, 16 GB, ESSD | rds.c6.2xlarge |
| Compute-optimized (ESSD) | c6 | 16 cores, 32 GB, ESSD | rds.c6.4xlarge |
| Compute-optimized (ESSD) | c6 | 32 cores, 64 GB, ESSD | rds.c6.8xlarge |
| Compute-optimized (ESSD) | c6 | 52 cores, 96 GB, ESSD | rds.c6.13xlarge |
| Compute-optimized (ESSD) | c5 | 64 cores, 128 GB, ESSD | rds.c5.16xlarge |
To view the current specifications of a host, go to the Host Information tab in the console. For details, see View host details.
Billing
Upgrade fees are charged based on the difference in cost between the new and original specifications for the remaining subscription period:
Upgrade fees = (Monthly fees of new specs / 30 / 24 × Unused hours)
− (Monthly fees of original specs / 30 / 24 × Unused hours)Example: New specs cost USD 14,400/month, original specs cost USD 7,200/month, and the host expires in 50 days (1,200 hours):
(14,400 / 30 / 24 × 1,200) − (7,200 / 30 / 24 × 1,200) = USD 12,000Upgrade the host specifications
Log on to the ApsaraDB MyBase console.
In the upper-left corner, select a region.
In the left-side navigation pane, click Hosts.
Find the host and choose More > Upgrade Specifications in the Actions column.
On the Upgrade/Downgrade page, select the target instance type from the Host Instance Type drop-down list.
Read and select Terms of Service, then click Buy Now and complete the payment.
After the upgrade completes, verify the new specifications on the Host Information tab. For details, see View host details.