OCI : Autonomous Linux Instance Configuration Failed with Error "osms flag file does not exist"

Applies  to :  

Oracle Linux - Version 7 and later  

Autonomous Linux  

 

Symptoms: 

Autonomous Linux Instance configuration failed with error "osms flag file does not exist" 

The OSMS Agent log shows error below:  

2024-01-17 10:06:46,441 - INFO - Starting action checker 
2024-01-17 10:06:46,442 - INFO - gRPC Start: OSMS Agent service started 
2024-01-17 10:06:49,005 - ERROR - Error checking actions (next check in 240 seconds): Command: ['osms', '--log-level', 'INFO', 'register', '--server-url', 'http://127.0.0.1:9003/XMLRPC'] failed (1): stderr: b'' stdout: b'Command failed: <ProtocolError for http://127.0.0.1:9003/XMLRPC: 403 403 Client Error: Forbidden for url: http://127.0.0.1:9003/XMLRPC>\n' 
2024-01-17 10:10:50,146 - ERROR - Error checking actions (next check in 480 seconds): Command: ['osms', '--log-level', 'INFO', 'register', '--server-url', 'http://127.0.0.1:9003/XMLRPC'] failed (1): stderr: b'' stdout: b'Command failed: <ProtocolError for http://127.0.0.1:9003/XMLRPC: 403 403 Client Error: Forbidden for url: http://127.0.0.1:9003/XMLRPC>\n'