Saturday, July 10, 2010

Jsession CloneID for debugging

WebSphere Commerce Dyna-caching mechanism only supports cookie-based sessions, and not URL rewriting.
CloneID (also known as server ID) is appended to the session ID

Once a browser establishes session affinity with an application server, a JsessionId is created. When a HTTP session is created, the session id is passed back to the browser as part of a cookie or URL encoding

e.g.

JSESSIONID 00004QkpGtFgJZ01zkgdi7qMJvg:14aelsphk

The value after : is the cloneID of the server and is used to identify the server. It is usually appended to the JSESSION ID.

This is very useful in a clustered environment for debugging and looking into logs.

This CloneID is only visible from /config/plugin-cfg.xml.

e.g. location :
/opt/IBM/WebSphere/AppServer/profiles//config/cells/plugin-cfg.xml

search for CloneID

5 comments:

  1. I wonder if it is possible to edit your cookie and change the clone id in order to diagnose a different jvm.

    ie
    Currently pinned to JVM A
    JSESSIONID 00004QkpGtFgJZ01zkgdi7qMJvg:A

    Now want to test JVM B
    Edit cloneid cookie
    JSESSIONID 00004QkpGtFgJZ01zkgdi7qMJvg:B

    I've found the you just get a new JSESSION cookie when you try modify it.

    ReplyDelete
    Replies
    1. You can edit the jession id using a cookie editor like firebug and then refresh the webpage to point to a new jvm

      Delete
    2. Great Article IoT Projects for Students

      Deep Learning Projects for Final Year

      JavaScript Training in Chennai

      JavaScript Training in Chennai

      The Angular Training covers a wide range of topics including Components, Angular Directives, Angular Services, Pipes, security fundamentals, Routing, and Angular programmability. The new Angular TRaining will lay the foundation you need to specialise in Single Page Application developer. Angular Training

      Delete
  2. I don't think you get different JSESSION Id. One more application for the same thing, if you use Dynacache monitor and want to check something on a different server in the cluster, you just change the cloneId in the JsessionId.

    ReplyDelete
  3. Websphere commerce server Online Training, http://www.21cssindia.com/courses/webspere-commerce-server-online-training-200.html Websphere commerce server Online Training, Websphere commerce server Training, Websphere commerce server, Websphere commerce server Online Training| Websphere commerce server Training| Websphere commerce server| "Courses at 21st Century Software Solutions
    Talend Online Training -Hyperion Online Training - IBM Unica Online Training - Siteminder Online Training - SharePoint Online Training - Informatica Online Training - SalesForce Online Training - Many more… | Call Us +917386622889 - +919000444287 - contact@21cssindia.com
    Visit: http://www.21cssindia.com/courses.html"

    ReplyDelete