APPLIES TO:
Enterprise Manager Base Platform – Version 13.2.0.0.0 and later
Information in this document applies to any platform.
SYMPTOMS:
13.2 agent status shows following error:
$ ./emctl status agent
Oracle Enterprise Manager Cloud Control 13c Release 2
Copyright (c) 1996, 2016 Oracle Corporation. All rights reserved.
—————————————————————
Status agent Failure:unable to connect to http server at https://<Agent_HOSTNAME>.<DOMAINNAME>:3872/emd/lifecycle/main/. [handshake has no peer]
CAUSE:
There is a 12.1.0.2 agent running on the agent machine using same agent port 3872:
========================
$ netstat -anp | grep 3872
(Not all processes could be identified, non-owned process info
will not be shown, you would have to be root to see it all.)
tcp 0 0 :::3872 :::* LISTEN 8922/java
$ ps -ef | grep agent
<USER>t 8922 8856 0 Aug19 ? 00:35:26 <Agent base>/core/12.1.0.2.0/jdk/bin/java -Xmx140M -server -Djava.security.egd=file:///dev/./urandom -Dsun.lang.ClassLoader.allowArraySyntax=true -XX:+UseLinuxPosixThreadCPUClocks -XX:+UseConcMarkSweepGC -XX:+CMSClassUnloadingEnabled -XX:+UseCompressedOops -Dwatchdog.pid=8856 -cp <Agent base>/core/12.1.0.2.0/jdbc/lib/ojdbc5.jar:<Agent base>/core/12.1.0.2.0/ucp/lib/ucp.jar:<Agent base>/core/12.1.0.2.0/modules/oracle.http_client_11.1.1.jar:<Agent base>/core/12.1.0.2.0/lib/xmlparserv2.jar:<Agent base>/core/12.1.0.2.0/lib/jsch.jar:<Agent base>/core/12.1.0.2.0/lib/optic.jar:<Agent base>/core/12.1.0.2.0/modules/oracle.dms_11.1.1/dms.jar:<Agent base>/core/12.1.0.2.0/modules/oracle.odl_11.1.1/ojdl.jar:<Agent base>/core/12.1.0.2.0/modules/oracle.odl_11.1.1/ojdl2.jar:<Agent base>/core/12.1.0.2.0/sysman/jlib/log4j-core.jar:<Agent base>/core/12.1.0.2.0/jlib/gcagent_core.jar:<Agent base>/core/12.1.0.2.0/sysman/jlib/emagentSDK-intg.jar:<Agent base>/core/12.1.0.2.0/sysman/jlib/emagentSDK.jar oracle.sysman.gcagent.tmmain.TMMain
==================
SOLUTION:
Perform the following steps to resolve the issue:
1. Stop the 12.1.0.2 agent that is using port 3872
2. Restart 13.2 agent
3. Verify the 13.2 agent status
