Arc enabled servers not in sync with update manager

anurag sharma 0 Reputation points
2025-04-30T12:35:30.47+00:00

On-Prem VM is onboarded via azure arc,and we manually downgraded the packages on Linux VM(RHEL 8.10). When we are trying to run update command it shows pending for update. But update manager is showing no update. Can you please let me know How can i check if update manager is in sync with arc enabled servers. Which configuration we can check for troubleshooting this.

Azure Arc
Azure Arc
A Microsoft cloud service that enables deployment of Azure services across hybrid and multicloud environments.
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  1. Ashok Gandhi Kotnana 6,355 Reputation points Microsoft External Staff
    2025-04-30T13:10:59.1833333+00:00

    Hi @anurag sharma,
    Good day!

    To ensure your Azure Arc-enabled RHEL 8.10 VM is properly synchronized with Azure Update Manager, begin by verifying the health of the Azure Connected Machine agent by checking the status of the himdsd and azcmagent services using systemctl,

    sudo systemctl status himdsd 
    sudo systemctl status azcmagent
    

     and confirm the agent version with the azcmagent show command.

     Next, confirm that the VM is correctly reporting to Update Manager by running the az resource show command with the appropriate namespace, resource type, VM name, and resource group.

     az resource show --namespace Microsoft.HybridCompute --resource-type machines --name <VM-Name> --resource-group <RG-Name>
    

     Additionally, verify that the required extensions — DependencyAgentLinux and AzureMonitorLinuxAgent — are installed using az connectedmachine extension list, as these are essential for inventory collection and patch reporting.

    az connectedmachine extension list --machine-name <VM-Name> --resource-group <RG-Name>
    

     Look for:

    DependencyAgentLinux

    AzureMonitorLinuxAgent

    Lastly, ensure that Periodic Assessment is enabled in Update Manager via the Azure portal to allow the system to automatically and regularly evaluate the VM for pending updates, keeping the compliance status accurate and up to date.

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