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Each week, the CMS Hybrid Cloud program provides a list of upcoming changes, maintenance windows, and updates to help customers build awareness and plan effectively and summarizes changes from the previous week.
This newsletter includes:
Completed change summary for the week of 4/23/2026
- 4/25/2026 - Enterprise Testing Services Maintenance
- 4/25/2026 - Downscale Splunk Prod Indexers to 80 from 111
- 4/25/2026 - Enterprise JIRA Maintenance
- 4/29/2026 - Non-Marketplace SSM Patching - PROD
- 4/29/2026 - Marketplace SSM Patching - IMPL
- 4/29/2026 - MAG - Azure Update Manager Patching - PROD
- 4/29/2026 - Azure Commercial - Azure Update Manager Patching - DEV/TEST/IMPL
To learn details about previous changes please go to the News and Updates section on cloud.cms.gov. (Secure Access required)
For Patching and Gold Image release schedule please view: Patching and Gold Image Release Calendar - 2026
5/2/2026 - Downscale Splunk Prod Indexers to 54 from 81
Summary:
The Logging Services team will scale down Splunk indexer infrastructure as part of moving from AL-2 to the new servers on AL-2023 as the AL-2 servers support will end by June.
Actions we are taking:
- Downscaling Splunk indexers using IAC
When is this happening?
Start Time: Saturday, 5/2/2026 at 8:00 am ET
End Time: Sunday, 5/3/2026 at 6:00 pm ET
Who will be impacted?
DRaaS ITSI, MITG MSI and EMM may have performance impacts when the Cloud Splunk indexers are being downscaled. Also, CCIC search heads peered to the Splunk environment might be impacted.
What is the impact?
There may be latency in adhoc searches that are performed by customers. Dashboards might also render slowly and have incomplete data while the changes are being propagated.
Need help? We are here to support you.
If you have any questions, don't hesitate to reach out to your assigned Hosting Coordinator. CMS IT Support can be reached via cloudsupport@cms.hhs.gov, or call (800) 562-1963, and is documented here at Support Page on cloud.cms.gov.
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