PowerProtect: Upgrade Precheck UPG0021 Precheck Failed for Subcomponents
Summary: PowerProtect Data Manager precheck fails with error code UPG0021.
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Symptoms
PowerProtect Data Manager upgrade precheck failed with the following error:
UPG0021: Precheck failed for subcomponents: Cloud Native. Check the subcomponents for details.
Error messages similar to the following are reported in the upgrademgr.log file:
ERROR StatusLogger Log4j2 could not find a logging implementation. please add log4j-core to the classpath. Using Simplelogger to log to the console.... ERROR: Failed to read default token issuer from file: /usr/local/brs/etc/default-token-issuer.yaml /usr/local/brs/etc/default-token-issuer.yaml (no such file or directory) WARN: Failed to open field value file /var/log/brs/fv.json for reading WARN: org.apache.hc.client5.http.HttpHostConnectionException occurred when attempting operation! Number of retries remaining: 3 WARN: org.apache.hc.client5.http.HttpHostConnectionException occurred when attempting operation! Number of retries remaining: 2 WARN: No TokenVerifier present in registry at time of verify attempt. WARN: org.apache.hc.client5.http.HttpHostConnectionException occurred when attempting operation! Number of retries remaining: 1 ERROR: org.apache.hc.client5.http.HttpHostConnectionException occurred when attempting operation! Exhausted all retries WARN: Failed to load external jwks endpoint resource: EnclosingExceptions: HttpHostConnectionException: Connect to Https://IPAddress:Port [IPAddress] [/IPAddress] failed:Connection refused WARN: org.apache.hc.client5.http.HttpHostConnectionException occurred when attempting operation! Number of retries remaining: 3 WARN: org.apache.hc.client5.http.HttpHostConnectionException occurred when attempting operation! Number of retries remaining: 2 WARN: org.apache.hc.client5.http.HttpHostConnectionException occurred when attempting operation! Number of retries remaining: 1 ERROR: org.apache.hc.client5.http.HttpHostConnectionException occurred when attempting operation! Exhausted all retries WARN: Failed to load external jwks endpoint resource: EnclosingExceptions: HttpHostConnectionException: Connect to Https://IPAddress:Port [IPAddress] [/IPAddress] failed:Connection refused WARN: System precheck failed.
Cause
Authentication request for Kubernetes data source is failing.
As part of the precheck, versions of different data sources are checked to confirm compatibility.
As part of the precheck, versions of different data sources are checked to confirm compatibility.
Resolution
Fix the authentication issue for the Kubernetes data source.
Article Properties
Article Number: 000480591
Article Type: Solution
Last Modified: 01 تموز 2026
Version: 1
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