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EM 13.4: Agent is Unreachable (REASON = unable to connect to http server at https://hostname:port/emd/main/. [handshake has no peer]) but the host is reachable (Doc ID 2889613.1)

Last updated on FEBRUARY 22, 2024

Applies to:

Enterprise Manager Base Platform - Version 13.4.0.0.0 and later
Information in this document applies to any platform.

Symptoms

Receiving the following unreachable alerts for 13.4 Agents:

Host=<hostname>
Target type=Database Instance
Target name=<DB_Name>
Categories=Availability
Message=Agent Unreachable (REASON = unable to connect to http server at https://<hostname>:<agent_port>/emd/main/. [handshake has no peer]). Host is reachable.
Severity=Warning
Event reported time=Aug 8, 2022 4:16:51 PM EDT
Location=<loc>
Department=<dept>
Operating System=Linux
Platform=x86_64
Event Type=Target Availability
Event name=Status
Availability status=Agent Unreachable
Rule Name=Target- Up/Down Availability for DB Targets,Up/Down Availability
Rule Owner=SYSMAN
Update Details:
Agent Unreachable (REASON = unable to connect to http server at https://<hostname>:<agent_port>/emd/main/. [handshake has no peer]). Host is reachable.

 

Observed the following errors in /agent_inst/sysman/log/gcagent.log

2022-08-08 17:14:35,133 [1:D2B61E50] WARN - *jetty*: Weak cipher suite TLS_RSA_WITH_AES_128_GCM_SHA256 enabled for Server@4149c063[provider=null,keyStore=null,trustStore=null]
2022-08-08 17:14:35,133 [1:D2B61E50] WARN - *jetty*: Weak cipher suite TLS_RSA_WITH_AES_256_GCM_SHA384 enabled for Server@4149c063[provider=null,keyStore=null,trustStore=null]
2022-08-08 17:14:35,133 [1:D2B61E50:main (@ 2022-08-08 17:14:33 EDT)] WARN - *jetty*: Weak cipher suite TLS_RSA_WITH_AES_128_CBC_SHA256 enabled for Server@4149c063[provider=null,keyStore=null,trustStore=null]
2022-08-08 17:14:35,134 [1:D2B61E50] WARN - *jetty*: Weak cipher suite TLS_RSA_WITH_AES_256_CBC_SHA256 enabled for Server@4149c063[provider=null,keyStore=null,trustStore=null]
2022-08-08 17:14:35,134 [1:D2B61E50] WARN - *jetty*: Weak cipher suite TLS_RSA_WITH_AES_128_CBC_SHA enabled for Server@4149c063[provider=null,keyStore=null,trustStore=null]
2022-08-08 17:14:35,134 [1:D2B61E50] WARN - *jetty*: Weak cipher suite TLS_RSA_WITH_AES_128_CBC_SHA enabled for Server@4149c063[provider=null,keyStore=null,trustStore=null]

 

Cause

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In this Document
Symptoms
Cause
Solution


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