Web Services Round Robin Service Load Balancer Event Endpoint Failure

I keep seeing these errors in the UlsTraceLogs:
SharePoint Web Services Round Robin Service Load Balancer Event: EndpointFailure Process Name: OWSTIMER Process ID: 3748 AppDomain Name: DefaultDomain AppDomain ID: 1 Service Application Uri: urn:schemas-microsoft-com:sharepoint:service:9b3095eda69947b299d2f873bbfee5ad#authority=urn:uuid:a01381a61b244525ab4fec30cde9dc5f&authority=https://ApplicationServerName:port/Topology/topology.svc
Active Endpoints: 2 Failed Endpoints:1 Affected Endpoint:
http://WFEserverName:port/9b3095eda69947b299d2f873bbfee5ad/ProfileService.svc
what do these errors mean?

ok, thanks, I'll have a look at that.
Going back to my issue...  Since I stopped the User Profile Service on the Application server, now I'm getting these non-stop messages in the log:
SharePoint Web Services Round Robin Service Load Balancer Event: EndpointFailure Process Name: w3wp Process ID: 6088 AppDomain Name: /LM/W3SVC/261708640/ROOT-1-130709594108226406 AppDomain ID: 2 Service Application Uri: urn:schemas-microsoft-com:sharepoint:service:9b3095eda69947b299d2f873bbfee5ad#authority=urn:uuid:a01381a61b244525ab4fec30cde9dc5f&authority=https://ApplicationServerName:port/Topology/topology.svc
Active Endpoints: 2 Failed Endpoints:1 Affected Endpoint:
http://ApplicationServerName:port/9b3095eda69947b299d2f873bbfee5ad/ProfileService.svc
SharePoint Web Services Round Robin Service Load Balancer Event: EndpointFailure Process Name: OWSTIMER Process ID: 8304 AppDomain Name: DefaultDomain AppDomain ID: 1 Service Application Uri: urn:schemas-microsoft-com:sharepoint:service:9b3095eda69947b299d2f873bbfee5ad#authority=urn:uuid:a01381a61b244525ab4fec30cde9dc5f&authority=https://ApplicationServerName:port/Topology/topology.svc
Active Endpoints: 2 Failed Endpoints:1 Affected Endpoint:
http://ApplicationServerName:port/9b3095eda69947b299d2f873bbfee5ad/ProfileService.svc
This time, the messages are referring to the same server - the Application Server.    In my original question, I should've differentiated the server names when I pasted the message.  Originally the message was referring to the Application
Server and Affected Endpoint was referring to a WFE.   I'll edit my original post to make it correct.

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              > --
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              > Tangosol, Inc.
              > http://www.tangosol.com
              > +1.617.623.5782
              > WebLogic Consulting Available
              >
              > "Wei Guan" <[email protected]> wrote in message
              > news:[email protected]...
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              > > 3) In WLAS6.0, you can specify how to pick the secondary server. Most
              > > important of all, pick a secondary server which is on the different
              > physical
              > > box than primary.
              > >
              > >
              > > --
              > > Hope it helps.
              > >
              > > Cheers - Wei
              > >
              > >
              > > "Cameron Purdy" <[email protected]> wrote in message
              > > news:[email protected]...
              > > > Is it true that the proxy can only use round-robin to load-balance the
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              > > > --
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              > > > Tangosol, Inc.
              > > > http://www.tangosol.com
              > > > +1.617.623.5782
              > > > WebLogic Consulting Available
              > > >
              > > >
              > > > "Don Ferguson" <[email protected]> wrote in message
              > > > news:[email protected]...
              > > > > Hi, comments in line.
              > > > >
              > > > > Gene Chuang wrote:
              > > > > >
              > > > > > Hi,
              > > > > >
              > > > > > I was looking at the cluster diagrams on the clustering page:
              > > > > >
              > > > > > http://www.weblogic.com/docs60/cluster/index.html
              > > > > >
              > > > > > And I can't help notice a slight descrepency between the diagram of
              > a
              > > > 2-Tier
              > > > > > cluster (WL web cluster + WL app cluster) vs.a 3-Tier cluster (web
              > > > > > proxy-plugin + WL web cluster + WL app cluster).
              > > > > >
              > > > > > In the 2-Tier diagram, the arrows going from the web nodes to the
              > app
              > > > nodes
              > > > > > converges to a single point, indicating that there's load balancing
              > of
              > > > > > servlet calls to ejbs.
              > > > > >
              > > > > > In the 3-Tier diagram, the arrows from each web node point directly
              > to
              > > > an
              > > > > > app node, which seems to indicate that there is a static one-to-one
              > > > > > relationship, hence no load-balancing.
              > > > >
              > > > > This is just an artifact of the drawing, not of the architecture. The
              > > > same
              > > > > load balancing would be performed between the web and app tiers
              > > regardless
              > > > > of whether or not there is a front end web server.
              > > > >
              > > > > > Below the 3-Tier diagram, one of the
              > > > > > described limitations of using standalone web server and proxy
              > > plug-ins
              > > > is:
              > > > > >
              > > > > > a.. Limited Load Balancing Options: When you use proxy plug-ins or
              > the
              > > > > > HttpClusterServlet to access clustered servlets, the load balancing
              > > > > > algorithm is limited to a simple round-robin strategy.
              > > > > >
              > > > > > I believe this is describe load balancing between the fire-wall and
              > > the
              > > > > > proxy web servers. But what about the load balancing between the WL
              > > web
              > > > > > servers and the app servers? Does it exist, or does one web server
              > > > always
              > > > > > assigned to one app server?
              > > > >
              > > > > This is not describing the load balancing between the firewall and the
              > > > > proxy web servers; we do not control of how that is performed. It is
              > > > > describing the load balancing between the proxy servers and the web
              > > tier.
              > > > > The diagram should really show that more clearly, as was done in the
              > > > 2-tier
              > > > > example.
              > > > >
              > > > > -Don
              > > > >
              > > > > >
              > > > > > --
              > > > > > Gene Chuang
              > > > > > Join Kiko.com!
              > > >
              > > >
              > >
              > >
              

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    User requests a page from the WFE, which talks to the database server. The operation needs information from the MMS, so the WFE requests information from the round robin load balancer for SharePoint web services. Let's say server A is down. 
    Here's my question - what happens next?
    a) The round robin load balancer tells the WFE the MMS is on servers A & B. The WFE tries server A, fails, and returns a failure. 
    b) The round robin returns servers A & B. The WFE tries server A, which fails. The WFE then tries server B.
    c) The round robin returns either A or B, depending on which is next in rotation. The WFE tries the server returned. If the server returned is A, the WFE returns a failure. 
    d) The round robin returns either A or B, depending on which is next in rotation. The WFE tries the server returned. If the server returned is A, the WFE queries the round robin service again.
    e) The round robin knows server A is down, returns only server B to the WFE. 
    Philo Janus, MCP Bridging business & Technology: http://www.saintchad.org/ Telecommuter? http://www.homeofficesurvival.com/ Author: Pro InfoPath 2007 & Pro InfoPath 2010 Pro PerformancePoint 2007 Pro SQL Server Analysis Services 2008 Building Integrated
    Business Intelligence Solutions

    When a Service Application is down, the application load balancer removes that endpoint from the load balancer. When it becomes available again, it adds it back. This way the WFE would just contact the MMS endpoint that was available, not try and timeout
    against an unavailable endpoint.
    Trevor Seward
    Follow or contact me at...
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    This post is my own opinion and does not necessarily reflect the opinion or view of Microsoft, its employees, or other MVPs.

  • Oracle service bus, endpoint load balancing

    I was create configuration like this (dot instead of whitespace):
    ............................______osb1
    Client ---- Apache LB
    ...........................\______osb2
    Apache Load Balancer (Apache LB) have "Round-robin" load balancing algorithm
    Servers "osb1" and "osb2" are in the cluster.
    Proxy Service (PS) route to Business Service (BS).
    BS have two endpoints (EP1, EP2). Load balancing algorithm in properties of BS is "none".
    When i send request to Apache LB then i get info from like this order: EP1, EP2, EP1, EP2...
    Why load balancing beetween endpoints working instead get info from endpoint which is first in endpoint's list ?
    Edited by: 915814 on 19.07.2012 13:10
    i was check via tcpdump. Packets going beetween nodes, but messages going only to first node. This i can see in Dashboard at Service Health tab in business service properties. So "none" in Load Balancing algorithm is work.

    Hi Adel,
    Customization file will be the best solution for your problem. You may generate a environment specific customization file. To know more, please refer -
    http://download.oracle.com/docs/cd/E13159_01/osb/docs10gr3/consolehelp/customization.html#wp1129087
    Simplest solution would be to generate a customization file and replace the existing URI's with the required one's using replace all option of textpad. Run this customization file at target environment, after importing the OSB configuration.
    Regards,
    Anuj

  • Azure Cloud Service Scaling - do I have to configure a Load Balancer?

    I'm a little bit confused by how scaling in Azure works. I'm using a Cloud Service and have 2 web roles running a PHP application. I can RDP on both machines and both applications run great on each machine. Also I don't have any problems calling the staging
    URL.
    But I can't figure out if I configure scaling so that 2 machines run always, if I have to configure a load balancer somehow. Or is this already done for me?
    In Azure VM's I had to create a load-balanced set endpoint for an endpoint, but what about cloud services?
    And how is this done in the XML configuration file for my service? What if I don't do it?

    Hi,
    Scaling is affected by core usage. Larger role instances or Virtual Machines use more cores. You can only scale an application within the limit of cores for your subscription. For example, if your subscription has a limit of twenty cores
    and you run an application with two medium sized Virtual Machines (a total of four cores), you can only scale up other cloud service deployments in your subscription by sixteen cores. All Virtual Machines in an availability set that are used in scaling an
    application must be the same size.
    Windows Azure supports load balance for cloud services and standard websites, we just need to set instance count to more than 1 to enable load balance. For virtual machines, it needs to set up manually.
    Please refer this link for Load Balance a Virtual Machine:
    http://www.windowsazure.com/en-us/manage/windows/common-tasks/how-to-load-balance-virtual-machines/
     for more information.
    Auto scale lets you set scaling limits and scheduling goals to ensure you are always getting optimal performance
    Please refer this link for Scaling on Cloud Services:
    http://azure.microsoft.com/en-us/services/cloud-services/
    Also, Please refer this link for Scaling an Application :
    http://azure.microsoft.com/en-us/documentation/articles/cloud-services-how-to-scale/
    XML configuration : Azure (Load-balanced) Endpoints can only be used for TCP/UDP based services. please check
    https://techlib.barracuda.com/display/BNGv54/How+to+Configure+a+High+Availability+Cluster+in+Azure/printable for the detailed information
    Hope this helps.
    Regards,
    Shirisha Paderu.

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