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OSM gives internal error after upgrade if cluster management is on one specific node

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ontap-system-manager
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Applies to

  • ONTAP 9.8
  • ONTAP System Manager (OSM)

Issue

  • Folling upgrade to ONTAP 9.8P19, OSM is not accessible when cluster-management LIF is on one specific node, error in the browser: 

500 Internal Server Error

Internal Server Error

The server encountered an internal error or misconfiguration and was unable to complete your request.  

  • The node-management LIF of that node is also not reachable but partner node is
  • SPI and swagger page is reachable via browser with the faulty node-management LIF
  • System manager is accessible when the cluster-management LIF is migrated to the partner node
  • HTTP services in both nodes are online.

External Web Services true
HTTP Port 80
HTTPS Port 443
Protocol Status online

  • apache-access.log returns status code 500 for system manager but 200 for SPI access with the faulty node management LIF

<System_IP> <faulty_node_management_IP>  "GET /sysmgr/v4 HTTP/1.1" 500 531 10066 - 0 - - -
...
...
<System_IP> <faulty_node_management_IP> admin "GET /spi/<node_name>/etc/log/mlog/ HTTP/1.1" 200 140233 1020301 - 0 + - -

  • apache-error.log from the faulty node has error:

Request exceeded the limit of 10 internal redirects due to probable configuration error. Use 'LimitInternalRecursion' to increase the limit if necessary. Use 'LogLevel debug' to get a backtrace.

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