Load balance configuration for clustering

we are going to setup multiple servers (clustering) for the BIEE. What configuration needs to be done to make them clustering? And, what is the load balancing alogrithmn behind? Pls help. thks.

Which articles & documentation have you read already? I don't want to duplicate what they've covered.
http://catb.org/~esr/faqs/smart-questions.html#beprecise

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ACE Load Balancing Configuration For NATed User Traffic

Hello,
I am currently working on a requirement where the shared application services will be hosted in DC and these services will be accessed by multiple (thousands) users from different corporates/customers. The user traffic will be hidden behind customer's proxy servers or firewalls so the load balancer (ACE modules) services hosted in DC will not be able to see requests coming in from induvidual users IP addresses.
In this scenario what are options of load balancing are available in Lyer3/4 and Layer7 ?
Thanks in advance for your help.
Sanjay

Hi Sanjay,
In a set up where all users are coming from behind a proxy, all users will be loadbalanced to same server thus overloading it. This is when you are doing standard L3/L4 LB.
In the situation of proxies, for HTTP applications you shall use L7 LB and use information(cookie) in HTTP client request or server response. The ace will use this information to stick the user to same server for persistence. If a client comes with no cookie it will be loadbalanced according to the predictor method configured. Below is the link for L7 configuration example and other TS steps you can take while configuring L7 policies on ACE. For more informatin i would suggest reading ACE user guide too.
http://docwiki.cisco.com/wiki/Cisco_Application_Control_Engine_(ACE)_Troubleshooting_Guide_-_Troubleshooting_Layer_7_Load_Balancing
If you have any questions please feel free to ask.
Regards,
Kanwal

Load Balance Configuration for OCS 10g

Hi guys,
A few question on the load balancer requirement and setup for a OCS 10g cluster.
1. Can Pound be used as the load balancer for the OCS cluster. (pound is an application for load balancer and reverse proxy).
2. Basically the load balancer will have two network interface, the first nic is connected to the
user network, and the second interface is connected at the backend network where the ocs cluster is located. My question is at which network interface the virtual server name (ldap, sso and http ) for the ocs cluster should be created ? at the user network interface or the ocs network interface ?. Do the virtual name need an ip addresses ?
Thanks for any info.
Regards
lanang

Which articles & documentation have you read already? I don't want to duplicate what they've covered.
http://catb.org/~esr/faqs/smart-questions.html#beprecise

Hardware Load Balancing Configuration and Session Clustering

          I would like to know where I can find any information on Hardware Load Balancing
          Configuration in order to leverage WLS HTTPSession clustering.
          Don Ferguson mentioned white papers on this subject however I can't seem to locate
          them.
          I am particularly interested in Cisco's 11000 Content Service Switch.
          Thanks.
          Mike Jones


Scroll to the bottom of this link. It discusses how to configure Alteon and Big-IP.
          The principles should apply to Cisco as well, but we don't have documentation on
          configuring it, as far as I know.
          http://e-docs.bea.com/wls/docs61/cluster/index.html
          -Don
          Michael Jones wrote:
          > I would like to know where I can find any information on Hardware Load Balancing
          > Configuration in order to leverage WLS HTTPSession clustering.
          > Don Ferguson mentioned white papers on this subject however I can't seem to locate
          > them.
          > I am particularly interested in Cisco's 11000 Content Service Switch.
          >
          > Thanks.
          >
          > Mike Jones

Problem in Hyperion FDM Load Balance Configuration...

hi all,
I installed hyperion essbase, planning, Hfm and Fdqm 11.1.1.3 version.
but i am getting error at configuration of fdm load balance configuration....
error: when i click on Test Connection in authentication Providers(Shared services(CSS))..am getting error as Cannot create ActiveX Component
Please give me reply if u know about this Issue.
regards,
Mady

This error indicates that the COMJNIBRIDGE dcom object is not able to launch successfully or has not been registered properly on the FDM application server:
a) Start > Run > DCOMCNFG
b) Expand Component Services > Computers > My Computer > DCOM CONFIG
c) Locate the COMJNIBRIDGE object, right-click and choose "properties"
d) Click on the identity tab and choose "This user" and browse for the FDM Service account and enter/confirm the password
e) Re-test

FDM Load balancer Configuration issue

We are doing the installation for Hyperion Planning, ODI and DRM on DEV environment
The EPM version we are using - 11.1.2.2
Server 1 (Windows 2008 x64)
Foundation Services
Calculation Manager
Planning Web Application
Analytical Provider Services
Essbase Administration Services web application
Oracle HTTP Server
Server 2 (Windows 2008 x64)
R & A Framework Services
R & A Framework Web Application
Financial Reporting Web Application
Web analysis Web Application
Server 3 (Windows 2008 x64)
FDM
EPMA
ODI
DRM
Essbase Integration Services
Essbase Studio
IIS 7.x
Server 4 (Windows 2008 x64)
Essbase Server
Server 5(Windows 2008 x64)
SQL Server 2008
All our services are running fine for Planning. We are in process of configuring FDM.
FDM Application Server Configuration is completed.
While doing FDM Load Balancer Configuration, we also able to connect to Shared Service directory successfully. But when we click ok to complete the configuration it gives following error -
Unable to Create Load Balancer Object!
Please verify that the user name, password, and domain are correct
Error=Cannot create ActiveX component
When checked in Event Log we found -
Unable to create Load Balance Manager object! Configuration directory could not be located. Error=-2147023878 - Retrieving the COM class factory for component with CLSID *{E652643D-6CC1-48AC-915D-01842B04F292}*
Source=TaskManagerService - at TaskManagerService.TaskItem.fGetConfigFolder()
We tried the below steps but issue still persists -
•     Start the ‘dcomcnfg’ tool in Windows
•     Expand Component Services\Computers\My Computer\Dcom-Config and locate the following object: {E652643D-6CC1-48AC-915D-01842B04F292}
•     Right-click and choose "Properties" and click on the "Security" tab
•     Click the "Edit" button and remove all users except the default: "Everyone" and "System" and click OK, then set the radio button to "Use Default"
•     Click the "Edit" button under Access Permissions and remove all users/groups except the default items and click OK, and set the radio button to "Use Default"
•     Now click the "Identity" tab and remove the ID in the "This User" field and set the radio button to "The Launching User" and click "Apply" and "OK"
•     Now try to launch the FDM Load Balance Config and all the extra tools for FDqM
We are using hypadmin as domain account but it is part of Administrators group on FDM Server (Server 3). The administrators group is also part of -
Act as part of the operating system
Bypass traverse checking
Log on as a batch job
Log on as a service
Please let us know in case if you encountered similar error on this version and possible solution for the issue.
Thanks in advance.
Regards,

I woudl clear out all users/groups on the security tab of the FDM Load Balance Server DCOm object for "Launch and Activation" and "Access" permisisons and then set the identity to the "Launching User" radio button and apply. Then re-set the config.
If that still fails, try rebooting the server and then set it.
Make sure the domain and password are also correct that is being entered.

Load balancing plugin for Sun WS 6.1

Where can I find details about the load balancing plugin for Sun Java Web Server 6.1?
Can I work around that by using the reverse proxy plugin and configure to work as a Load balancer?
thx
Anand

Details about using the reverse proxy plugin can be found here:
http://docs.sun.com/source/819-0902/rpp61.html
The reverse proxy plugin can be used for load balancing. Use the service-passthrough Service SAF for this purpose. You are particularly interested in the "servers" parameter
"servers - A quoted, space-delimited list of the servers that receive the forwarded requests. Individual server names may optionally be prefixed with http:// or https:// to indicate the protocol and/or suffixed with a colon and integer to indicate the port."

Load balancing algorithm for groups in RZ12

Hello,
I would like to know the load balancing algorithm for groups defined in RZ12.
I know that log on groups for external connections are administered via SMLG and table RZLLICLASS.
I also know that RFC resources can be managed for RFC logon groups via RZ12.
Kind regards,
Peter
<removed_by_moderator>
Point awarding is at your discretion, but read and follow the "Rules of Engagement"
Edited by: Juan Reyes on Dec 3, 2010 10:21 AM

Hello!
Found this post while searching information about RFC and Logon Groups...
I have some mess in my head with SMLG functionality and RZ12. As I know SMLG we can use to distribute users to application server instances, it gives us good achievement in performance. With RZ12 we can distribute RFC connection of particular job for parallel execution on predefined application server. With SMQS and SMQR transaction we can set "Name of AS Group" to route RFC-execution on certain server or servers. But I have troubles with understanding. Imagine, we set up group 1 with 2 servers (name it RFC_GR1), and group 2 with another 2 servers (name it RFC_GR2). How could qRFC scheduler decide on which RFC server group (RFC_GR1 or RFC_GR2) distribute RFC-execution? How to interact "Name of AS Group" with RFC groups if we can set only one group? How could we distribute RFC-execution depending on our logon groups (smlg)? We would like to distribute RFC depending on SAP logon groups. Is it possible? Or do I compare apple and orange?
Regards,
Artem Ivashkin

LOAD BALANCE BEHAVIOR FOR 7600 ON ETHERCHANNELS

Hi Everyone,
Currently I'm planning to implement ether-channels on 7600 routers, but there's something that's still not clear to me, regarding the load balancing behavior, for L2VPN and L3VPN.
I've read that 7600 in MPLS default load balance behavior is to take the SIP and DIP if present and the bottom of the stack label or the 5th label depending upon the number of labels on the stack. In l2VPN scenarios when ether-channel is used, if no IP traffic is present what is the default behavior of the etherchannel to calculate the load balancing hash function to select a given link on the bundle.
I'll appreciate any feedback regarding this.

Hi Louis, you could set default routes on the ASA's with tracking, and use ospf downstream to inject the default route in to the network with default information originate - this will only advertise out a default route if it has it in the routing table. With SLA you can track internet reachability by IP SLA echo to something like 8.8.8.8. Both sides can advertise this in to the network, if one goes then there is one left. Just be mindful of the policies and NAT required, you will have to duplicate the rules on the ASA's. With the NAT you have to ensure, that outgoing traffic comes back in the same path it left so it doesn't break connections.

Best Load Balancing solution for NMS 4.15

What is the best load balancing solution for Messaging Server with 250 users?

What are you trying to achieve? I do not understand from your question what it is you are trying to accomplish. What component(s) of NMS are you trying to load balance?

Office Web Apps Load Balancing Configuration Issue for SharePoint 2013

I have load balanced servers dedicated for Office Web Apps with name “md1xxxwfe1” and “md1xxxwfe2”
, both this servers are load balanced by CISCO Load balancer. And I have mapped Load Balancer Virutal IP with host name officeapps.jda.corp.local in the DNS records.
Things are working fine if I add new farm by using New-OfficeWebAppsFarm
with server name as internalurl in PowerShell console
as like “ -internalurl http://
md1xxxwfe1 but when I use –internalurl officeapps.jda.corp.local it is not working at all. I’m not getting what to do at this point.
I have gone through following blogs but no luck.
http://blogs.technet.com/b/meamcs/archive/2013/03/27/office-web-apps-2013-multi-servers-nlb-installation-and-deployment-for-sharepoint-2013-step-by-step-guide.aspx
http://blogs.technet.com/b/office_resource_kit/archive/2012/09/11/introducing-office-web-apps-server.aspx
http://davidlimsharepoint.blogspot.in/2013/02/installing-and-configuring-office-web.html
http://sps2013.blogspot.in/2013/09/office-web-apps-with-sharepoint-2013.html
The output of the wfe1 server is attached with this. When I open http:// /hosting/discovery in wfe1 I’m getting following result (attached
screenshot) but it should show hostname rather than server name.
Please help me
Thanks, Ram Ch

Hi Ram ,
For troubleshooting your issue, please take steps as below:
Just about any load balancing solution will work, including a server that runs the Web Server (IIS) role running Application Request Routing (ARR):Install
Application Request Routing
Install the certificate on the load balancer as described under Securing Office Web Apps Server communications by using
HTTPS.
Make sure you have configured the cluster correctly for full internet name:
Reference:
http://technet.microsoft.com/en-us/library/jj219435.aspx#loadbalancer
Thanks,
Eric
Forum Support
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Load balancing with multiple clusters (HTTPProxyServlet)

          Hello!
          I'm newbie in Weblogic. I would like to have clustering and load balancing in
          development environment. I've created 2 clusters, with one managed server each.
          I've created a web application for deploying the http proxy servlet and put it
          under another managed server without clustering. Below is my configuration:
          managed server without cluster (as proxy) - Port 8002
          admin server - Port 8001
          cluster_1 - multicast address 237.0.0.11, multicast port 8004, cluster address
          - t3://localhost:8006, t3://localhost:8007
          cluster_2 - multicast address 237.0.0.10, multicast port 8014, cluster address
          - t3://localhost:8006, t3://localhost:8007
          managed_cluster1 - under cluster_1, port 8006
          managed_cluster2 - under cluster_2, port 8007
          in the web.xml of the proxy, i put the following parameters:
          <param-name>WebLogicCluster</param-name>
          <param-value>localhost:8006|localhost:8007</param-value>
          However, when i send the requests to http://localhost:8002/sms, the requests always
          go to the same server, for eg: managed_cluster2?
          If i configure using single cluster, the load balancing will be in proper. What's
          the cause fo the problem? and any solution?
          Thanx in advance.
          Regards,
          joey


You have 2 options here Jordi, either you can use BGP loadbalancing, this requires multipath as BGP by default would only install one route from the BGP table to the RIB hence FIB.
But this may result in excessive IRL (inter rack link) usage in the cluster when traffic coming in on rack0 wants to take the bGP path out on rack1
You could also use ABF (access-list based forwarding) to forcelly push traffic received on rack0 out on the link on rack0 and use an ipsla tracker to fallback to rack1 in case the uplink is gone.
Alternatively to extend this by IGP signaling to redirect traffic preferably to rack1 to start with to minimize the IRL usage.
And then you also have the ability to use RPL in the uplink path to make one link more preferred on teh internet then the other in case you want to control a bit which link is preferably used on rack0 or rack1
regards
xander

Load Balancing 11i for both Intranet & Internet Access

Our current environment for 11i (11.5.5) is accessed only internally (via Intranet). We need to allow outside access (via Internet) also for self-service apps (ie. HR). Oracle Support/Metalink has stated that Load Balancing (note 148155.1) is the only supported method to have multiple (Apps Servers) systems access a single database. Could I get feedback from anyone who has implemented Load Balancing for 11i? Additionally if someone has implemented this for both intranet and internet access how has your company setup? Do the secondary server(s) from the Load Balancing note reside in the DMZ? And thus the primary app server and database reside inside the firewall? Thanks....

Hi,
We are using 6 middle tiers for internal access for intranet access and 2 middle tiers in External DMZ with only web server running for Extrenal Access over Internet for Self Service.
You Implement one Load Balancer for first 6 internal Middle Tiers with site level profiles pointing to Internal .
You implement second Load balancer for external 2 middle tiers with server level profile options for these two servers pointing to External Load balancer .
To check how to implement load balancer vsiit
http://becomeappsdba.blogspot.com/2006/09/configure-hardware-load-balancer-at.html
Wait for my next post in above blog site with step by step procedure to implement above solution External & Internal one
Atul Kumar
Oracle Apps DBA
http://teachmeoracle.com

Sticky sessions and Load Balancing in WL Clusters

We are using iPlanet Web Server 4.1 with WebLogic App Server; and would like
to implement load balancing with sticky sessions and in-memory state
replication.
The documentation in Weblogic says that -
When using in-memory state replication, your WebLogic Server Cluster must
live behind one or more proxy servers. The proxy servers are smart enough to
send servlet requests, belonging to the same HTTP session, back to the same
server in the cluster that holds the session data.
(Ref: http://www.weblogic.com/docs51/cluster/setup.html)
Does this mean that the sticky session configuration has to be done on the
iPlanet Web Server itself ?
Also, if WebLogic is used as the Web server, does WebLogic provide any
support for sticky sessions?
Any help, suggestions or links to useful info are welcome.
Regards,
Milind.

Mike,
im curious as to why you would recomend using weblogic as a web server in 6.1?
I would not for the following reasons:
- it costs 10x more per cpu list
- it doesnt support hardware accell cards (afaik, please let me know if this has
changed)
iplanet is really good a serving up static html and gif's, especially in ssl if you
have a hardware accell card. So if you have a site with lots of graphics and you use
ssl a lot, I think its still a better solution.
-Joel
Mike Reiche wrote:
You get sticky round-robin by default.
You need to have session tracking turned on (i think it is on by default). You
need to have the WL plugin configured in iPlanet.
When WL creates an httpSession, it writes a cookie (or rewrites the URL) back
to the browser. On subsequent requests, the browser sends the cookie and iPlanet
plug-in directs the request to the correct WL instance based on the ip address
of the WL server embedded in the cookie.
If you are using WLS 6.1, I would recommend using it as a web server (and not
using iPlanet). I imagine that it supports stickly load balancing as well.
Mike
Joel Nylund <[email protected]> wrote:
you get round robin by default, if you want a different scheme you can
use one
of the other 3 options (weight, random or parameter).
-Joel
I think weight can be set in weblogic properties. I havent used any other
than
round robin.
Milind Prabhu wrote:
We are using iPlanet Web Server 4.1 with WebLogic App Server; and wouldlike
to implement load balancing with sticky sessions and in-memory state
replication.
The documentation in Weblogic says that -
When using in-memory state replication, your WebLogic Server Clustermust
live behind one or more proxy servers. The proxy servers are smartenough to
send servlet requests, belonging to the same HTTP session, back tothe same
server in the cluster that holds the session data.
(Ref: http://www.weblogic.com/docs51/cluster/setup.html)
Does this mean that the sticky session configuration has to be doneon the
iPlanet Web Server itself ?
Also, if WebLogic is used as the Web server, does WebLogic provideany
support for sticky sessions?
Any help, suggestions or links to useful info are welcome.
Regards,
Milind.

HttpClusterServlet Proxy Load Balancing with Multiple Clusters

          How do I load balance JSPs and Servlets using the HttpClusterServlet proxy server
          approach when I have more than one cluster?
          It appears from the docs that there is a 1 to 1 relationship between the non-clustered
          managed proxy server that has the HttpClusterServlet and the cluster (1 proxy
          to 1 cluster).


Preferred method would be domain, domainhash, url or urlhash as described in:
http://www.cisco.com/univercd/cc/td/doc/product/webscale/css/bsccfggd/contrule.htm#xtocid2610122.
do not recommend to use round-robin method for load balancing internet proxies. It creates inefficient usage of the storage and bandwidth, as more proxies can have to cache the same objects.

Load balance configuration for clustering

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