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Azure site recovery Cent os support

Anoop Sabu 20 Reputation points
2025-09-24T05:53:52.7833333+00:00

Hi everyone,

Quick question — I'm looking to set up Azure Site Recovery for some of our on-prem Linux servers and need to know if CentOS 7 is still officially supported.

I've seen some mixed info around support matrices and EOL notices, so just trying to get a clear answer.

Specifically:

Is CentOS 7 still supported for ASR (e.g. VMware to Azure or physical to Azure)?

Are there specific kernel versions or agent requirements we should be aware of?

Any known issues or upcoming deprecation related to CentOS 7 in this context?

Would appreciate any clarity or links to updated documentation.

Thanks in advance!

Azure Site Recovery
Azure Site Recovery
An Azure native disaster recovery service. Previously known as Microsoft Azure Hyper-V Recovery Manager.
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Answer accepted by question author
  1. Deepanshu katara 17,875 Reputation points MVP Moderator
    2025-09-24T05:57:22.6866667+00:00

    Hello Anoop, Welcome to MS Q&A

    CentOS 7 is still supported for Azure Site Recovery (ASR) in scenarios such as VMware to Azure or physical to Azure. However, it's important to note that CentOS is in End Of Life (EOL) status, so you should consider your use and plan accordingly. Here are some key points to consider:

    Support Details:

    • Only 64-bit systems are supported. Ensure that Linux Integration Services (LIS) components are installed to boot the server in Azure after failover.
      • The Azure failover VM requires the Guest Agent on the server. The source server must preinstall Python 2.6 or later to ensure a successful installation on the target VM.
      Kernel and Agent Requirements: 
      - On Linux distributions, only the stock kernels that are part of the distribution minor version release/update are supported.

   - Upgrading protected machines across major Linux distribution versions isn't supported. To upgrade, disable replication, upgrade the operating system, and then enable replication again.

   **Known Issues and Deprecation**:

      - Since CentOS is EOL, you should consider transitioning to a supported distribution. Azure provides guidance on CentOS-compatible distributions like Red Hat Enterprise Linux, AlmaLinux, Oracle Linux, and Rocky Linux.

    For more detailed guidance, you can refer to the Support matrix for disaster recovery of VMware VMs and physical servers to Azure and the CentOS End-Of-Life guidance.

    Thanks

    Deepanshu

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