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Knowledge Base

"Unable to apply DRS resource settings on host" error in vCenter Server (1028351)

Last Updated: 5/23/2023Categories: TroubleshootingTotal Views: 80395Language:
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Learn how VMware Skyline Advisor and Skyline Health Diagnostics work together to provide proactive intelligence and self-service log analysis.

Use Skyline Advisor to avoid issues before they occur across VCF, vSphere, vSAN, NSX, vROps & Horizon. Skyline Findings are based on top KBs, VMSAs/CVEs and design best practices.

Use Skyline Health Diagnostics to root cause vSphere & vSAN logs when an issue occurs. Skyline Health Diagnostic Findings are based on top KBs and VMSA/CVEs. You can use the Skyline Health Diagnostics tool in online or offline mode.

If you require additional help from technical support, please use Skyline Advisor to initiate a Log Assist to reduce time to upload logs. TSEs can also initiate logs to reduce effort.

Symptoms

An ESX host in vCenter Server reports the error:

Unable to apply DRS resource settings on host. The operation is not allowed in the current state. This can significantly reduce the effectiveness of DRS.
WARNING: UserDuct: 184: Cannot allocate a new data segment, out of memory

Resolution

This warning does not have a direct impact on production virtual machines but can result in resource contention within the cluster if DRS is not functioning correctly.

To resolve this issue, restart the management agents (hostd and vpxa) on the host.

/etc/init.d/hostd restart
/etc/init.d/vpxa restart

Workaround

Warning: The following steps should not be executed on a VSAN, NSX, or Horizon View-enabled cluster.

If the problem persists after restarting the management agents, remove the host from the cluster and then re-add it:

Place the host into maintenance mode.

Note: If DRS does not migrate the virtual machines to other hosts, migrate them manually.

Ensure that no virtual machines are running on the host.

Remove the ESXi/ESX host by dragging it out of the cluster.

Re-add the ESXi/ESX host by dragging it into the cluster.

Exit from maintenance mode.

Related Information

VMware Skyline Health Diagnostics for vSphere - FAQ
"Unable to apply DRS resource settings on host" warning in summary tab of the ESXi host
Restarting the Management agents in ESXi
El host ESX/ESXi en vCenter Server informa el error: No se puede aplicar la configuración de recursos DRS en el host. La operación no está permitida en el estado actual
vCenter Server 中出现 “无法在主机上应用 DRS 资源设置 (Unable to apply DRS resource settings on host)” 错误
vCenter Server の「DRS リソース設定をホストに適用できません (Unable to apply DRS resource settings on host)」エラー

Detectable by VMware SkylineTM

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End Of General Availability of the Free vSphere Hypervisor (ESXi 7.x and 8.x) (2107518)

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