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Agent Unable To Reach OMS, Fails With "handshake has no peer" Error (Doc ID 2683697.1)

Last updated on JULY 11, 2020

Applies to:

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

Symptoms

- Agent is unable to reach OMS.

- PingOMS fails

$ emctl pingOMS

Oracle Enterprise Manager Cloud Control 13c Release 4
Copyright (c) 1996, 2020 Oracle Corporation. All rights reserved.
---------------------------------------------------------------
EMD pingOMS error: unable to connect to http server at https://<oms hostname>:4903/empbs/upload. [handshake has no peer]
$

 

- No issues with 3rd Party Certificates, SSL, TLS configuration.

 

- Testing connection using openssl hangs indefinitely

$ openssl s_client -connect <oms hostname>:4903

CONNECTED(00000003)

It hangs in there indefinitely.

 

- status of agent returns OMS Version (unknown)

$ emctl status agent
Oracle Enterprise Manager Cloud Control 13c Release 4
Copyright (c) 1996, 2020 Oracle Corporation. All rights reserved.
---------------------------------------------------------------
Agent Version : 13.4.0.0.0
OMS Version : (unknown)
Protocol Version : 12.1.0.1.0
Agent Home : /em_share/Agent/agent_inst
Agent Log Directory : /em_share/Agent/agent_inst/sysman/log
Agent Binaries : /em_share/Agent/agent_13.4.0.0.0
Core JAR Location : /em_share/Agent/agent_13.4.0.0.0/jlib
Agent Process ID : 372614
Parent Process ID : 372435
Agent URL : https://<agent hostname>:3872/emd/main/
Local Agent URL in NAT : https://<agent hostname>:3872/emd/main/
Repository URL : https://<oms hostname>:4903/empbs/upload
Started at : 2020-06-17 18:23:16
Started by user : oracle
Operating System : Linux version 3.10.0-957.el7.x86_64 (amd64)
Number of Targets : 53
Last Reload : (none)
Last successful upload : (none)
Last attempted upload : (none)
Total Megabytes of XML files uploaded so far : 0
Number of XML files pending upload : 1,851
Size of XML files pending upload(MB) : 1.98
Available disk space on upload filesystem : 82.13%
Collection Status : Collections enabled
Heartbeat Status : OMS is unreachable
Last attempted heartbeat to OMS : 2020-06-17 19:17:34
Last successful heartbeat to OMS : (none)
Next scheduled heartbeat to OMS : 2020-06-17 19:17:52

---------------------------------------------------------------
Agent is Running and Ready
$

 

- agent upload fails

$ emctl upload agent
Oracle Enterprise Manager Cloud Control 13c Release 4
Copyright (c) 1996, 2020 Oracle Corporation. All rights reserved.
---------------------------------------------------------------
EMD upload error:full upload has failed: uploadXMLFiles skipped :: OMS version not checked yet. If this issue persists check trace files for ping to OMS related errors. (OMS_DOWN)
$

 

 

Changes

 N/A

Cause

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In this Document
Symptoms
Changes
Cause
Solution
References


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