Hi Team,

I have requirment that, The application team has modified a jar in the enterprise archive and they want this particular jar to be deployed to only one node in a cluster of 2 Nodes. They dont want this jar to be synchronized across cluster members on different nodes. They just want this jar to be deployed on one node and want to test this on only one server in a cluster.  How to i achieve this?

if there is already a jar with same name in the existing applications(ear) on that node, How to i overwrite this particular jar over existing application jar with same name.

1. I heard this can be done using Generic JVM arguments to include class path.

2. Another approach is to create shared library at server level rather cluster and reference it in the server class loading policy.

I have not done this before. if anyone have done this, could you please guide me with your practical knowledge.

Cheers, Thank you community.



------------------------------
Mallikarjuna Reddy K
Websphere & Middleware Administrator

------------------------------

Strange requirement = Strange solution:
1. Stop node agent on the node where you don't need any changes.
2. Update application (e.g. using EAR single file replacement) on cluster where application is installed
3. You can test changes on synchronized node (where node agent is active) – then rollback or continue
4. Start node agent, synchronize node (now potential changes are propagated to second node also)

------------------------------
Sebastian Tylko
------------------------------

Original Message:
Sent: Thu June 25, 2020 11:40 AM
From: Mallikarjuna Reddy K
Subject: Deploying application jar on only one node in a cluster.

Hi Team,

I have requirment that, The application team has modified a jar in the enterprise archive and they want this particular jar to be deployed to only one node in a cluster of 2 Nodes. They dont want this jar to be synchronized across cluster members on different nodes. They just want this jar to be deployed on one node and want to test this on only one server in a cluster.  How to i achieve this?

if there is already a jar with same name in the existing applications(ear) on that node, How to i overwrite this particular jar over existing application jar with same name.

1. I heard this can be done using Generic JVM arguments to include class path.

2. Another approach is to create shared library at server level rather cluster and reference it in the server class loading policy.

I have not done this before. if anyone have done this, could you please guide me with your practical knowledge.

Cheers, Thank you community.



------------------------------
Mallikarjuna Reddy K
Websphere & Middleware Administrator

------------------------------

Stop the jvm, locate the jar in your installedApps directory (usually inside EAR/lib or EAR/WAR/WEB-INF/lib), replace it with the updated file and then start that jvm. This will work until your next deployment overwrites this jar.

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Regards,
Azhagesan Pazhani Gurusamy
------------------------------

Original Message:
Sent: Thu June 25, 2020 11:40 AM
From: Mallikarjuna Reddy K
Subject: Deploying application jar on only one node in a cluster.

Hi Team,

I have requirment that, The application team has modified a jar in the enterprise archive and they want this particular jar to be deployed to only one node in a cluster of 2 Nodes. They dont want this jar to be synchronized across cluster members on different nodes. They just want this jar to be deployed on one node and want to test this on only one server in a cluster.  How to i achieve this?

if there is already a jar with same name in the existing applications(ear) on that node, How to i overwrite this particular jar over existing application jar with same name.

1. I heard this can be done using Generic JVM arguments to include class path.

2. Another approach is to create shared library at server level rather cluster and reference it in the server class loading policy.

I have not done this before. if anyone have done this, could you please guide me with your practical knowledge.

Cheers, Thank you community.



------------------------------
Mallikarjuna Reddy K
Websphere & Middleware Administrator

------------------------------

This information here should provide what you are asking for.  If not let us know.

https://www.ibm.com/support/knowledgecenter/en/SSAW57_8.5.5/com.ibm.websphere.nd.multiplatform.doc/ae/twve_appedconc.html

------------------------------
Glenn Marcy
------------------------------

Original Message:
Sent: Thu June 25, 2020 11:40 AM
From: Mallikarjuna Reddy K
Subject: Deploying application jar on only one node in a cluster.

Hi Team,

I have requirment that, The application team has modified a jar in the enterprise archive and they want this particular jar to be deployed to only one node in a cluster of 2 Nodes. They dont want this jar to be synchronized across cluster members on different nodes. They just want this jar to be deployed on one node and want to test this on only one server in a cluster.  How to i achieve this?

if there is already a jar with same name in the existing applications(ear) on that node, How to i overwrite this particular jar over existing application jar with same name.

1. I heard this can be done using Generic JVM arguments to include class path.

2. Another approach is to create shared library at server level rather cluster and reference it in the server class loading policy.

I have not done this before. if anyone have done this, could you please guide me with your practical knowledge.

Cheers, Thank you community.



------------------------------
Mallikarjuna Reddy K
Websphere & Middleware Administrator

------------------------------

There are different options to update a single jar.
These options are described here:
https://www.ibm.com/support/knowledgecenter/SSAW57_8.5.5/com.ibm.websphere.nd.multiplatform.doc/ae/crun_app_upgrade.html

As you want to deploy the change to one node only, please make sure to disable the synchronization, otherwise the next sync (wanted or not) will overwrite changes. You can find details here:
https://www.ibm.com/support/knowledgecenter/SSAW57_8.5.5/com.ibm.websphere.nd.multiplatform.doc/ae/trun_app_hotupgrade.html

------------------------------
Lars Besselmann
Client Technical Professional Hybrid Cloud, IBM

https://www.linkedin.com/in/lars-besselmann-29944977/
------------------------------

Original Message:
Sent: Thu June 25, 2020 11:40 AM
From: Mallikarjuna Reddy K
Subject: Deploying application jar on only one node in a cluster.

Hi Team,

I have requirment that, The application team has modified a jar in the enterprise archive and they want this particular jar to be deployed to only one node in a cluster of 2 Nodes. They dont want this jar to be synchronized across cluster members on different nodes. They just want this jar to be deployed on one node and want to test this on only one server in a cluster.  How to i achieve this?

if there is already a jar with same name in the existing applications(ear) on that node, How to i overwrite this particular jar over existing application jar with same name.

1. I heard this can be done using Generic JVM arguments to include class path.

2. Another approach is to create shared library at server level rather cluster and reference it in the server class loading policy.

I have not done this before. if anyone have done this, could you please guide me with your practical knowledge.

Cheers, Thank you community.



------------------------------
Mallikarjuna Reddy K
Websphere & Middleware Administrator

------------------------------