Update an AWS Mainframe Modernization runtime environment
Use the AWS Mainframe Modernization console to update an AWS Mainframe Modernization runtime environment. You can update the minor version of the runtime engine or the instance type that hosts the runtime environment. You can choose whether you want to apply updates immediately or during the preferred maintenance window.
These instructions assume that you have completed the steps in Setting up AWS Mainframe Modernization.
Update a runtime environment
To update a runtime environment
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Open the AWS Mainframe Modernization console at https://console.aws.amazon.com/m2/
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In the AWS Region selector, choose the Region where the environment that you want to update was created.
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On the Environments page, choose the environment that you want to update.
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On the details page for the environment, choose Actions, and then choose Edit environment.
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Make any of the following changes:
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In the Engine options section, choose the engine version that you want.
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In the Resources section, choose the instance type that you want.
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In the Maintenance window section, choose the day, time, and duration that you want.
Note
The only changes that you can choose to apply during the maintenance window are changes to the engine version. You must apply all other changes immediately.
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Choose Next.
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In When to apply these changes, choose Immediately or During the next maintenance window. Then choose Update environment.
If you choose Immediately, you see a message when the environment has finished updating.
AWS Mainframe Modernization maintenance window
Every runtime environment has a weekly two-hour maintenance window. Any system changes are applied during this time. The maintenance window is your chance to control when modifications, and software and security patching occurs. If a maintenance event is scheduled for a given week, it begins during that two-hour maintenance window. Most maintenance events also complete during the two-hour maintenance window, although larger maintenance events might take more than a couple of hours to complete.
The two-hour maintenance window is selected at random from an 8 hour block of time per Region. If you don't specify a maintenance window when you create a runtime environment, AWS Mainframe Modernization assigns a 2 hour maintenance window on a randomly selected day of the week.
AWS Mainframe Modernization consumes some of the resources in your environment instance while maintenance is being applied. You might observe a minimal effect on performance or some disruptions in applications during maintenance.
The following table shows the default time blocks when maintenance windows are assigned for each Region.
| Region Name | Region | Time Block |
|---|---|---|
| US East (N. Virginia) | us-east-1 | 03:00–11:00 UTC |
| US West (Oregon) | us-west-2 | 06:00–14:00 UTC |
| Asia Pacific (Mumbai) | ap-south-1 | 06:00–14:00 UTC |
| Asia Pacific (Singapore) | ap-southeast-1 | 14:00–22:00 UTC |
| Asia Pacific (Sydney) | ap-southeast-2 | 12:00–20:00 UTC |
| Asia Pacific (Tokyo) | ap-northeast-1 | 13:00–21:00 UTC |
| Canada (Central) | ca-central-1 | 03:00–11:00 UTC |
| Europe (Frankfurt) | eu-central-1 | 21:00–05:00 UTC |
| Europe (Ireland) | eu-west-1 | 22:00–06:00 UTC |
| Europe (London) | eu-west-2 | 22:00–06:00 UTC |
| Europe (Paris) | eu-west-3 | 23:59–07:29 UTC |
| South America (São Paulo) | sa-east-1 | 00:00–08:00 UTC |
