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EM 13c: Post Upgrade to EM 13.4 / 13.5 Version, All the Agents Failed to Communicate with OMS and Console Access Fails With SLB URL (Doc ID 2671586.1)

Last updated on OCTOBER 13, 2023

Applies to:

Enterprise Manager Base Platform - Version and later
Information in this document applies to any platform.


After upgrading the Multi-OMS environment with SLB to 13.4 or 13.5,

1. Users are unable to access Enterprise Manager console using the SLB host name in the browser.

However, Connections to the Enterprise Manager Console using actual OMS host names in the browser works fine.

2. All agents failed to communicate with the OMS Servers.

$emctl status agent  command output shows:

OMS Version : (unknown)
Heartbeat Status : OMS is unreachable
Last attempted heartbeat to OMS : <Date>
Last successful heartbeat to OMS : (none)

$emctl secure agent fails with the following error:

2020-10-25 04:24:02,341 [main] INFO agent.SecureAgentCmd secureAgent.447 - Checking if HTTPS Upload URL is accessible from the agent...
2020-10-25 04:24:02,341 [main] INFO agent.SecureAgentCmd secureAgent.448 - Accessing: https://<SLBHostName>:4900/empbs/upload
2020-10-25 04:24:02,370 [main] ERROR agent.SecureAgentCmd main.353 - Failed to secure the Agent: peer not authenticated

From the agent server, wget with the SLB Upload URL hangs / fails

$wget https://<SLBHostName>:4900/empbs/upload --no-check-certificate

Health Monitors for Upload as well as Console are shown as DOWN in SLB Console.


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