After upgrading from V12 to V21.0, v12 agents not connecting

Products

• CA Automic Workload Automation - Automation Engine

Issue/Introduction

Version 12.x agent connecting to version 21.0 Automation Engine will not start.  Log files shows:

U02000071 Current directory: C:\Automic\Agents\Windows\bin
20220619/115709.202 - U02000360 Agent 'AGENT_NAME' has been started with process ID '3148'.
20220619/115709.219 - U02000066 Host information: Host name='HOSTNAME', IP address='x.x.x.x'
20220619/115709.219 - U02000066 Host information: Host name='HOSTNAME', IP address='::1'
20220619/115709.219 - U02000350 Agent supports IP version: 'IPv4'
20220619/115709.219 - U02000350 Agent supports IP version: 'IPv6'
20220619/115709.219 - U02000228 Extended exception handler is turned on.
20220619/115709.219 - U02000072 Connection to system 'AUTOMIC' initiated.
20220619/115709.219 - U02000011 Connection to Server 'x.x.x.x(HOSTNAME):8443' initiated.
20220619/115730.350 - U02000010 Connection to Server 'HOSTNAME:8443' terminated.
20220619/115730.350 - U02000074 Connecting to system 'AUTOMIC' is not possible.
20220619/115730.350 - U02000355 CP selection has been finished but no suitable CP was found. Next reconnect after '60' seconds.
20220619/115809.587 - U02000072 Connection to system 'AUTOMIC' initiated.
20220619/115809.587 - U02000011 Connection to Server 'x.x.x.x(HOSTNAME):8443' initiated.
20220619/115830.779 - U02000010 Connection to Server 'HOSTNAME:8443' terminated.
20220619/115830.779 - U02000074 Connecting to system 'AUTOMIC' is not possible.
20220619/115830.779 - U02000355 CP selection has been finished but no suitable CP was found. Next reconnect after '60' seconds.
20220619/115910.087 - U02000072 Connection to system 'AUTOMIC' initiated.
20220619/115910.087 - U02000011 Connection to Server 'x.x.x.x(HOSTNAME):8443' initiated.
20220619/115931.292 - U02000010 Connection to Server 'HOSTNAME:8443' terminated.
20220619/115931.292 - U02000074 Connecting to system 'AUTOMIC' is not possible.

 

Environment

Release : 21.0.3

Component :

Resolution

Since the agent is a 12.3 agent and not a TLS enabled agent, it cannot connection to a JCP in 21.0.  It must connect to a "classic" or regular CP or TLS Gateway that is acting as a CP.  The regular CP will use the CP.PORTS settings from the ucsrv.ini and the 12.x agents need to connect to one of these.  The 8443 port is by default one of the ports for the WS.PORT which is used for JCP and can only be used with TLS-enabled components.