Comments on: WebSphere Administration: Finding Cluster Members http://myarch.com/finding-cluster-members Builds and bytes Sat, 28 Jan 2012 19:37:55 -0500 http://wordpress.org/?v=2.8.4 hourly 1 By: Bob Gibson http://myarch.com/finding-cluster-members/comment-page-1#comment-35099 Bob Gibson Wed, 18 Nov 2009 17:36:44 +0000 http://myarch.com/?p=225#comment-35099 Your call to AdminConfig.getid() is not well formed. You are missing the trailing/closing '/'. That is why I much prefer to use string formatting to build the string to be passed to the WSAS scripting API. For example: cluster_conf_id = AdminConfig.getid("/ServerCluster:%s/" % cluster_name ) Be careful though, if the user happens to pass an empty string as the cluster name, e.g., wsadmin -scriptName clusterInfo.py "" Then the call will be: cluster_conf_id = AdminConfig.getid("/ServerCluster:/" ) which could result in a multi-line respose. Next, you should be aware that splitting configuration IDs using whitespace, i.e., member_conf_ids.split() will only work if none of the configuration IDs contain an embedded space. This is "legal" as far as the WebSphere Application Server product is concerned. We can leave the discussion about whether this is, or is not a best/bad practice to some other time. I just wanted to bring it to your attention, since I have been bitten by this little "feature"... ;-) Let me know if you want to see the code I use to handle this little feature. Your call to AdminConfig.getid() is not well formed. You are missing the trailing/closing ‘/’. That is why I much prefer to use string formatting to build the string to be passed to the WSAS scripting API. For example:

cluster_conf_id = AdminConfig.getid(”/ServerCluster:%s/” % cluster_name )

Be careful though, if the user happens to pass an empty string as the cluster name, e.g.,

wsadmin -scriptName clusterInfo.py “”

Then the call will be:

cluster_conf_id = AdminConfig.getid(”/ServerCluster:/” )

which could result in a multi-line respose.

Next, you should be aware that splitting configuration IDs using whitespace, i.e.,

member_conf_ids.split()

will only work if none of the configuration IDs contain an embedded space.

This is “legal” as far as the WebSphere Application Server product is concerned. We can leave the discussion about whether this is, or is not a best/bad practice to some other time.

I just wanted to bring it to your attention, since I have been bitten by this little “feature”… ;-)

Let me know if you want to see the code I use to handle this little feature.

]]>