IM Error : JGRP000006: failed accepting connection from peer

Products

• CA Identity Suite
• CA Identity Manager
• CA Identity Governance

Issue/Introduction

The IM process has high CPU usage (almost 100%) .. resulting in an almost unworkable IM environment. 

Having searched the application server logs the following warnings are recorded

WARN [org.jgroups.protocols.TCP] (ConnectionMap.Acceptor [xxx.xxx.xxx.xxx:7600]) JGRP000006: failed accepting connection from peer: java.net.SocketException: ConnectionMap.Connection.readPeerAddress(): cookie read by xxx.xxx.xxx.xxx:7600 does not match own cookie; terminating connection#012#011at org.jgroups.blocks.TCPConnectionMap$TCPConnection.readPeerAddress(TCPConnectionMap.java:496) [jgroups-3.4.5.Final.jar:3.4.5.Final]#012#011at org.jgroups.blocks.TCPConnectionMap$TCPConnection.<init>(TCPConnectionMap.java:376) [jgroups-3.4.5.Final.jar:3.4.5.Final]#012#011at org.jgroups.blocks.TCPConnectionMap$Acceptor.handleAccept(TCPConnectionMap.java:298) [jgroups-3.4.5.Final.jar:3.4.5.Final]#012#011at org.jgroups.blocks.TCPConnectionMap$Acceptor.run(TCPConnectionMap.java:282) [jgroups-3.4.5.Final.jar:3.4.5.Final]#012#011at java.lang.Thread.run(Thread.java:748) [rt.jar:1.8.0_212]#012#012

How can we resolve this issue?

Environment

Release : 14.x

Component : IDENTITY MANAGER (IdentityManger)

Cause

Environmental 

Resolution

The error indicates that some other process connected to the JGroups port 7600 (and did not send any data).

Please check if there is any port scan tool (for example, "nc" command line tool, etc) attempting to connect to the port 7600, or some other service or process configured to connect to the wrong port.

Administrators can use a port monitoring tool (i.e., tcptrack) to track down what is attempting to connect to the JGroups port.

Diagnostic Steps

• You can reproduce "JGRP000006: failed accepting connection from peer: java.net.SocketTimeoutException: Read timed out" by using the following command:

          telnet 127.0.0.1 7600

          or

         nc 127.0.0.1 7600

 

• You can reproduce "JGRP000006: failed accepting connection from peer: java.io.EOFException" by using the following command:

         nc -z 127.0.0.1 7600

• You can reproduce "JGRP000006: failed accepting connection from peer: java.net.SocketException: ConnectionMap.Connection.readPeerAddress(): cookie read by 127.0.0.1:7600 does not match own cookie; terminating connection" by using the following command:

         curl http://127.0.0.1:7600

 

 

Additional Information

This information is available via the RedHat support site:

https://access.redhat.com/solutions/1279473