Cloning Grid control Oracle Agnet from running machine to a newly added clustered node

When you add a new node to the cluster then you need to install a new agent for the grid control on those new nodes.
These steps will help you clone already patched home and avoid the new installation procedures in few minutes.
To do so you have to follow the below steps:
On the Source machine:
tar cvf /{full path for the tar file to be created including the file name} {files or folders to be archived "Oracle Grid Home"}
After the tar file created then gzip it as below:

gzip agent11.tar
-bash-3.2$ ls
10.2                 agent10g.tar.gz      agent11g             stage
agent10g             agent11.tar.gz       oraInventory.tar.gz
-bash-3.2$ scp -rp agent11.tar.gz oracle@10.195.2.13:/app/portal/oracle/oracle
agent11.tar.gz       100% |************************************************************|   588 MB    00:51


On the destination machine:

set your desired time zone as below:

export TZ=Etc/GMT-2

Then install the home as below:

-bash-3.2$ ./runInstaller -clone -forceClone ORACLE_HOME=/app/portal/oracle/oracle/product/agent11g ORACLE_HOME_NAME=agent11g1 -silent b_chainedInstall=false oracle.sysman.top.agent:s_installType=AGENT OMS_HOST=csemp.bss.etisalat.eg OMS_PORT=4889 -local  CLUSTER_NODES={portaldb3}

Starting Oracle Universal Installer...

Checking swap space: must be greater than 500 MB.   Actual 29258 MB    Passed

Preparing to launch Oracle Universal Installer from /tmp/OraInstall2014-03-23_02-54-56PM. Please wait ...-bash-3.2$ Oracle Universal Installer, Version 11.1.0.8.0 Production

Copyright (C) 1999, 2010, Oracle. All rights reserved.

You can find the log of this install session at:

 /app/portal/oracle/oracle/oraInventory/logs/cloneActions2014-03-23_02-54-56PM.log

.................................................................................................... 100% Done.

Installation in progress (Sunday, March 23, 2014 2:55:06 PM EET)

...............................................................Install successful

Linking in progress (Sunday, March 23, 2014 2:55:13 PM EET)

.                                                                64% Done.

Link successful

Setup in progress (Sunday, March 23, 2014 2:55:58 PM EET)

......................                                          100% Done.

Setup successful

End of install phases.(Sunday, March 23, 2014 2:56:19 PM EET)

Starting to execute configuration assistants

Configuration assistant "Oracle Configuration Manager Clone" succeeded

Configuration assistant "Agent Configuration Assistant" succeeded

WARNING:

The following configuration scripts need to be executed as the "root" user.

#!/bin/sh

#Root script to run

/app/portal/oracle/oracle/product/agent11g/root.sh

To execute the configuration scripts:

    1. Open a terminal window

    2. Log in as "root"

    3. Run the scripts

The cloning of agent11g1 was successful.

Please check '/app/portal/oracle/oracle/oraInventory/logs/cloneActions2014-03-23_02-54-56PM.log' for more details.

Configuring the agent:
-bash-3.2$ ./agentca -f -c "{portaldb3}"

Stopping the agent using /app/portal/oracle/oracle/product/agent11g/bin/emctl  stop agent
Oracle Enterprise Manager 11g Release 1 Grid Control 11.1.0.1.0
Copyright (c) 1996, 2010 Oracle Corporation.  All rights reserved.
Stopping agent ... stopped.
Running agentca using /app/portal/oracle/oracle/product/agent11g/oui/bin/runConfig.sh ORACLE_HOME=/app/portal/oracle/oracle/product/agent11g ACTION=Configure MODE=Perform RESPONSE_FILE=/app/portal/oracle/oracle/product/agent11g/response_file RERUN=TRUE INV_PTR_LOC=/app/portal/oracle/oracle/product/agent11g/oraInst.loc COMPONENT_XML={oracle.sysman.top.agent.10_2_0_1_0.xml}
Perform - mode is starting for action: Configure


Perform - mode finished for action: Configure

You can see the log file: /app/portal/oracle/oracle/product/agent11g/cfgtoollogs/oui/configActions2014-03-26_10-31-47-AM.log
Starting Oracle Universal Installer...

Checking swap space: must be greater than 500 MB.   Actual 29236 MB    Passed
The inventory pointer is located at /app/portal/oracle/oracle/product/agent11g/oraInst.loc
The inventory is located at /app/portal/oracle/oracle/oraInventory
'UpdateNodeList' failed.

Starting the agent using /app/portal/oracle/oracle/product/agent11g/bin/emctl  start agent
Oracle Enterprise Manager 11g Release 1 Grid Control 11.1.0.1.0
Copyright (c) 1996, 2010 Oracle Corporation.  All rights reserved.
Starting agent ............................ started.

Stopping the agent using /app/portal/oracle/oracle/product/agent11g/bin/emctl  stop agent
Oracle Enterprise Manager 11g Release 1 Grid Control 11.1.0.1.0
Copyright (c) 1996, 2010 Oracle Corporation.  All rights reserved.
Stopping agent ... stopped.

Running Agent Addon Configuration using /app/portal/oracle/oracle/product/agent11g/perl/bin/perl /app/portal/oracle/oracle/product/agent11g/sysman/install/AddonConfig.pl
Arguments passed

Configuring Addon from xml : oracle.sysman.plugin.virtualization.agent.11_1_0_1_0.xml

Running Command : /app/portal/oracle/oracle/product/agent11g/oui/bin/runConfig.sh ORACLE_HOME=/app/portal/oracle/oracle/product/agent11g ACTION=configure MODE=perform RERUN=true  RESPONSE_FILE=/app/portal/oracle/oracle/product/agent11g/vt_responsefile COMPONENT_XML={oracle.sysman.plugin.virtualization.agent.11_1_0_1_0.xml}
 Setting the invPtrLoc to /app/portal/oracle/oracle/product/agent11g/oraInst.loc

perform - mode is starting for action: configure


perform - mode finished for action: configure

You can see the log file: /app/portal/oracle/oracle/product/agent11g/cfgtoollogs/oui/configActions2014-03-26_10-33-20-AM.log

 Agent Addon Configuration done

Starting the agent using /app/portal/oracle/oracle/product/agent11g/bin/emctl  start agent
Oracle Enterprise Manager 11g Release 1 Grid Control 11.1.0.1.0
Copyright (c) 1996, 2010 Oracle Corporation.  All rights reserved.
Agent is already running

Clustering the new agent nodes:

Then update the cluster node list by running the below command on all rac nodes to make the agent clustered:

 /app/portal/oracle/oracle/product/agent11g/oui/bin/runInstaller ORACLE_HOME=/app/portal/oracle/oracle/product/agent11g -updateNodeList "CLUSTER_NODES={portaldb1,portaldb2,portaldb3,portaldb4}" -local

Starting Oracle Universal Installer...

Checking swap space: must be greater than 500 MB.   Actual 29257 MB    Passed

The inventory pointer is located at /var/opt/oracle/oraInst.loc

The inventory is located at /app/portal/oracle/oracle/oraInventory

'UpdateNodeList' was successful.

In case you face issues and want to deattach and attach the home again:

To deattach Home:
runInstaller –silent -detachHome -invPrtLoc /app/portal/oracle/oracle/oraInventoryoraInst.loc \
ORACLE_HOME_NAME="agent11g1" \
ORACLE_HOME="/app/portal/oracle/oracle/product/agent11g"
To attach Home:
runInstaller –silent -attachHome -invPrtLoc /app/portal/oracle/oracle/oraInventoryoraInst.loc \
ORACLE_HOME_NAME="agent11g1" \
ORACLE_HOME="/app/portal/oracle/oracle/product/agent11g"
To Update the node list with clustered nodes:
/app/portal/oracle/oracle/product/agent11g/oui/bin/runInstaller ORACLE_HOME=/app/portal/oracle/oracle/product/agent11g -updateNodeList "CLUSTER_NODES={portaldb1,portaldb2,portaldb3,portaldb4}" -local

References:

http://docs.oracle.com/cd/E17559_01/install.111/e16847/clone_agent_usng_zip.htm