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EM 13.4: All Agents Failed to Communicate with OMS After Upgrade to EM 13.4 (OMS Servers behind Server Load Balancer) (Doc ID 2723036.1)

Last updated on NOVEMBER 23, 2020

Applies to:

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


Multi OMS Servers behind SLB.

OMS servers are upgraded to EM 13.4. Since then, all agents failed to communicate with the OMS Servers.

$emctl status agent 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


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