Cisco APIC Installation and ACI Upgrade and Downgrade Guide

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Cisco APIC Installation and ACI Upgrade and Downgrade Guide

REST API verification for controller upgrade or downgrade scheduler pause status

Updated: July 12, 2026

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Provides the API endpoint and response format to verify whether a controller upgrade or downgrade scheduler is paused.

You can use the REST API to verify that a scheduler is paused for a controller maintenance policy.

Post the following API to verify that a scheduler is paused for a controller maintenance policy:

https://<ip address>/api/node/class/maintUpgStatus.xml

You will see a return similar to the following:

https://<ip address>/api/node/class/maintUpgStatus.xml

ConstCtrlrMaintP ==> controller group
Nowgrp ===> A switch group

<?xml version="1.0" encoding="UTF-8"?>
<imdata totalCount="2">
    <maintUpgStatus childAction="" dn="maintupgstatuscont/maintupgstatus-ConstCtrlrMaintP" faultDelegateKey="uni/fabric/
maintpol-ConstCtrlrMaintP" lcOwn="local" maxConcurrent="0" modTs="2014-08-28T14:45:24.232-07:00" polName="
ConstCtrlrMaintP" runStatus="paused" status="" uid="0" waitOnClusterHealth="no" windowName=""/>
    <maintUpgStatus childAction="" dn="maintupgstatuscont/maintupgstatus-nowgrp" faultDelegateKey="" lcOwn="local" 
maxConcurrent="0" modTs="2014-08-28T08:05:15.148-07:00" polName="nowgrp" runStatus="running" status="" uid="0" 
waitOnClusterHealth="no" windowName=""/>
</imdata>