Changing instance specifications allows you to flexibly adjust resources to meet business needs and optimize resource utilization. This topic describes how to change the specifications of an MSE instance.
Before you begin
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Changing instance specifications takes about 10 minutes, during which you cannot perform other operations on the instance in the console.
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For instances with three or more nodes, a rolling deployment updates each node sequentially and automatically synchronizes data, ensuring your service is not interrupted. For instances with one or two nodes, which are not highly available, the change may cause service interruptions.
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To minimize the impact on your business, perform this operation during off-peak hours.
Change engine specifications
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Log on to the MSE console, and select a region in the top navigation bar.
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In the left-side navigation pane, choose Microservices Registry > Instances.
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On the Instances page, find the target instance and perform one of the following operations based on its billing method:
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For a Subscription instance: In the Actions column, click More and select Upgrade or Downgrade.
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For a Pay-as-you-go instance: In the Actions column, click More and select Upgrade/Downgrade.
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On the Microservices Engine (MSE) (Subscription) | Change specifications or Microservices Engine (MSE) (Pay-as-you-go) | Change specifications page, modify the Engine specification and Number of Cluster Nodes.
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Click Buy Now.
Change network settings
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Log on to the MSE console, and select a region in the top navigation bar.
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In the left-side navigation pane, choose Microservices Registry > Instances.
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On the Instances page, click the ID of the target instance. On the Basic Information page, go to the Network Information section and click Configure VPC or Configure Internet.
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In the Configure VPC or Configure Internet dialog box, modify the network settings and click OK.
Verify the changes
Return to the Instances page and click the ID of the target instance. On the Basic Information page, check that the Engine specification, Number of Nodes, Internal IP Address, and Public Endpoint fields reflect the new configuration.