Load balancing MS Winsock Proxy Server on WebNS 5.0

Does anyone know what needs to be done on the service/content rule configuration to support Winsock Proxy requests from client to VIP for load balancing to work?

Here is a link that may be helpful in configuring the CSS:
http://www.cisco.com/warp/public/117/CSS_CEreverseproxy.html

Similar Messages

Load balancing by the proxy plugin

Has anyone encountered this before:
I have a cluster of two WLS 5.1 servers, hosting servlets that serve web
requests. The requests are proxied through a web server ( I have tried
Weblogic, Apache as well as IIS). I also have a tool that simulates
concurrent web requests and fires them to the proxy server.
As per documentation, as the load balancing while proxying requests to
servlets is round robin, I expect that the requests are uniformly
distributed across the two weblogic servers. But what I see is a bit
different. In one case I fired 15 requests and found that 11 went to first
server and 4 went to the other.
Second time when I fired again 2 of them went to the first server and 13 to
the second one. I would expect that around half of the total requests
should be routed to each server everytime so that there is a proper load
balancing done by the proxy. I have not changed any configuration related
to the default load balancing algorithm. So I expect it is round-robin.
Has anyone encountered this before ? This happens to me irrespective of
which proxy server I use (i.e which proxy plugin I use). Is there some
other configuration required and I am missing something or is there some
inherent problem with the load balancing of the proxy plugins. Any info
would be highly appreciated.
Thanks
Mainak

Could you post this in weblogic.developer.interest.plug-in? This group is for
ejb related questions. Thanks.
Bill
Mainak Datta wrote:
Has anyone encountered this before:
I have a cluster of two WLS 5.1 servers, hosting servlets that serve web
requests. The requests are proxied through a web server ( I have tried
Weblogic, Apache as well as IIS). I also have a tool that simulates
concurrent web requests and fires them to the proxy server.
As per documentation, as the load balancing while proxying requests to
servlets is round robin, I expect that the requests are uniformly
distributed across the two weblogic servers. But what I see is a bit
different. In one case I fired 15 requests and found that 11 went to first
server and 4 went to the other.
Second time when I fired again 2 of them went to the first server and 13 to
the second one. I would expect that around half of the total requests
should be routed to each server everytime so that there is a proper load
balancing done by the proxy. I have not changed any configuration related
to the default load balancing algorithm. So I expect it is round-robin.
Has anyone encountered this before ? This happens to me irrespective of
which proxy server I use (i.e which proxy plugin I use). Is there some
other configuration required and I am missing something or is there some
inherent problem with the load balancing of the proxy plugins. Any info
would be highly appreciated.
Thanks
Mainak

Load Balancing Oracle BI Presentation Server with OC4J

Hello All,
Is there a way to perform Load Balancing Oracle BI Presenation Server the way we do with IIS (defining in ISAPIConfig.XML file)?
I am looking some pointers towards Clustering/Load Balancing Oracle BI Presentation Servers using OC4J not IIS.
Thank you.

Thanks , the Oracle BI Presentation Server is running now ,but still the oc4j display the below error :-
C:\OracleBI\oc4j_bi\bin>oc4j.cmd -start
Starting OC4J from C:\OracleBI\oc4j_bi\j2ee\home ...
10/05/06 13:58:31 Error initializing server: /C:/OracleBI/oc4j_bi/j2ee/home/conf
ig/server.xml, Fatal error at line 1 offset 1 in file:/C:/OracleBI/oc4j_bi/j2ee/
home/config/server.xml: .<Line 1, Column 1>: XML-20108: (Fatal Error) Start of r
oot element expected.
10/05/06 13:58:31 Fatal error: server exiting

Switch-independent load-balancing NIC teaming on server-side and MAC/ARP flapping on L2/L3 switches

Since active deployment of Windows Server 2012, our servers support team began to utilize new feature - switch-independent load-balancing NIC teaming. At first look it seems great - no additional network configuration is required and load balancing is performed by server itself by sending frames in round-robin or some hash algorithm out from different NICs (say two for simplicity) but with same MAC address. Theoretical bandwith is now grown up to 2Gbps (if we have two 1G NICs per server) against failover NIC teaming configuration, when one of two adapters is always down.
But how does this affect (if does) switching and routing performance of network equipment? From point of view of L2 switch - it has to rewrite its CAM table each time a server sends frame from different NIC. Isn't it expensive operation? Won't it affect switching in a bad way? We see in our logs that same server make switches to change mac-to-port associations several times per second.
Well, and how does it affect routing, if the switch to which server is connected is L3 switch an performs routing for the subnet server connected to? Will CEF operate well if ARP entry chages several times per second?
Thank you.

Since nobody answered here, we created service request and got the following answer (in short):
L2 MAC flapping between ports is very bad and you must avoid such configurations as much as possible. There is one possible variant that can be considered in your situation - use port-channel (either L2 or L3), in this configuration port-channel will be treted as single port and there won't be flapping.
Conversation example is here: https://ramazancan.wordpress.com/tag/best-practice/

Urgent: Load balance the shared services server

Hello Experts,
One of my customer would like to know that is there a way to load balance the shared services server i.e., Register one essbase server with more than one Shared services server, so that if one shared services fails the other can authenticate the logins for the essbase server.
Also, referred the following weblink for 11x, Table 3. EPM System High Availability and Load Balancing Matrix
http://download.oracle.com/docs/cd/E12825_01/epm.111/epm_high_avail_11111/frameset.htm?ch01s04.html
Do we have any docs for version 9x?
Environment:
Essbase 9.3.1.3.00
OS : IBM AIX on POWER Systems (64-bit) 5.3
Any suggestions would be of great help. Thanks in advance.
Regards,
Sonal

I would not attempt any changes until 9.3.1 service fix #16 is released.
Oracle is back-porting clusterware support to with service fix # 16.
HSS 9.3.1sf 16 "active passive failover cluster with Oracle Clusterware 11g, for hss web app and openldap"
Based on the Oracle escalated support resources I have been in touch with solutions are not supported. Please realize this is not load-balancing and is fail-over support only.
To my knowledge there is not a "active-active" 9.3.1 Shared Services that is supported by Oracle.
You can read more about an active-passive fail-over at: http://www.oracle.com/technology/products/bi/pdf/epm-hss-high-avail-windows-whitepaper.pdf
They are supposed to release a 9.3.1 white paper once service fix #16 is fully released and has been client tested.
Regards,
John

Load Balancing with Reverse Proxy Plug-in in SunOne 6.1

Hello
we are configuring our reverse proxy web server SunOn 6.1 for load balancing and we have some conflicting information that we have found on the internet. The options we have found are the following:
1- In one case, it seems that all we need to do is add the destination servers to the servers parameter (quoted, space-delimited). We have read that the proxy server will simply round-robin requests.
2- In another case, we have seen that we have to use an loadbalancer.xml file with the server names and reference the file from both magnus.conf and obj.conf.
I have doubts about the second option because I really think this is configuration in 7.0 not 6.1.
Also, I also need to configure session stickiness but it is not clear how this works. There is an option for sticky cookies that defaults to JSESSIONID if not configured. Does this mean that I will have session stickiness but simply without the use of cookies?
ANY HELP? We need to solve this in the next day.

HI,
This may work for you.
obj.conf
<Object name="passthrough1">
Service fn="service-passthrough" servers="http://localhost:8080"
</Object>
<Object name="default">
AuthTrans fn="match-browser" browser="MSIE" ssl-unclean-shutdown="true"
NameTrans fn="assign-name" from="/idm(|/*)" name="passthrough1"
NameTrans fn="ntrans-j2ee" name="j2ee"
NameTrans fn="pfx2dir" from="/mc-icons" dir="D:/Sun/WebServer6.1/ns-icons" name="es-internal"
NameTrans fn="document-root" root="$docroot"
PathCheck fn="nt-uri-clean"
PathCheck fn="check-acl" acl="default"
PathCheck fn="find-pathinfo"
PathCheck fn="find-index" index-names="intro.htm,index.html,home.html,index.jsp"
ObjectType fn="type-by-extension"
ObjectType fn="force-type" type="text/plain"
Service method="(GET|HEAD)" type="magnus-internal/imagemap" fn="imagemap"
Service method="(GET|HEAD)" type="magnus-internal/directory" fn="index-common"
Service method="(GET|HEAD|POST)" type="~magnus-internal/" fn="send-file"
Service method="TRACE" fn="service-trace"
Error fn="error-j2ee"
AddLog fn="flex-log" name="access"
</Object>
<Object name="j2ee">
Service fn="service-j2ee" method="*"
</Object>
<Object name="cgi">
ObjectType fn="force-type" type="magnus-internal/cgi"
Service fn="send-cgi"
</Object>
<Object name="es-internal">
PathCheck fn="check-acl" acl="es-internal"
</Object>
============================================
magnus.conf
# The NetsiteRoot, ServerName, and ServerID directives are DEPRECATED.
# They will not be supported in future releases of the Web Server.
NetsiteRoot D:/Sun/WebServer6.1
ServerName abc
ServerID https-www.abc.com
RqThrottle 128
DNS off
Security off
ExtraPath D:/Sun/WebServer6.1/bin/https/bin
Init fn=flex-init access="$accesslog" format.access="%Ses->client.ip% - %Req->vars.auth-user% [%SYSDATE%] \"%Req->reqpb.clf-request%\" %Req->srvhdrs.clf-status% %Req->srvhdrs.content-length%"
Init fn="load-modules" shlib="D:/Sun/WebServer6.1/bin/https/bin/j2eeplugin.dll" shlib_flags="(global|now)"
Init fn="load-modules" shlib="D:/Sun/WebServer6.1/plugins/passthrough/passthrough.dll"

Load Balancing and WLS primary server offset

I've got a load balancer in front of my WLS cluster, and I'm trying to
          set up load balancing based on WLS clustering. What I need to know to
          do this is the offset within the cookie that's responsible for
          determining which machine within the cluster to direct to.
          Any idea how I can get this information?
          thanks,
          cfraser


Chris Fraser wrote:
          > The proxy/plug-in solution sounds pretty cool, but I've got a high speed
          > Alteon Load Balancer already set up. I would prefer to use that as the load
          > balancer to the WL cluster rather than pay to bring another WLS online to do
          > pretty much what the load balancer, that I already own, can do. I know that
          > going this route means that we're probably not going to be able to do things
          > like failover to the secondary when the primary dies, but we will be able to
          > load balance and also have the ability to dynamically add/delete servers
          > from the list of available servers as they are brought up/down.
          In Memory session replication doesn't work without our plugins. I will have to
          do little bit of investigation to figure out if other persistence mechanism's
          would work without our plugins if you are interested in them. I have to remind
          you though that other types of persistence mechanism's we support are slower
          compared to in memory session replication.
          > Are there any plans to work with an Alteon or a Foundry to have their Load
          > Balancers act as the front end to a WLS cluster?
          Currently none. We are taking steps to make the plugin's and cluster more
          robust, we currently don't have any plans to work with other 3rd party vendors.
          > For us it would be ideal, because we wouldn't have to support another piece of
          > software, we would just
          > have to support the hardware based Alteon, which can handle thousands of
          > transactions per second.
          > I understand that the primary and secondary server information is available
          > in the sessionID, I'm just not quite sure how to extract it.
          This information is saved in the cookie. But I wouldn't count that, as we
          have plans to change this. I cannot give your more details.
          > Is there a particular offset within the session ID where it can always be
          > found?
          I don't quite get what you mean here.
          Hope this helps.
          - Prasad
          > thanks for the help,
          > cfraser
          > ----------
          > C h r i s t o p h e r A . F r a s e r
          > Director, Technology
          > macroplay.com, Inc.
          > [email protected]
          >
          > Viresh Garg wrote:
          >
          > > You should be using
          > > -- NES +NSAPI Plugin
          > > -- IIS + ISAPI Plugin
          > > -- WEblogic server acting as proxy
          > > -- Apache +Apache Plugin ( only in Denali)
          > >
          > > front-ending your Weblogic cluster
          > >
          > > These proxies/plug-ins are smart to do a lot of things like:
          > >
          > > -- Load balancing in weblogic cluster
          > > -- Adding/deleting servers dynamically in cluster when the servers
          > > join/leave Weblogic cluster
          > > -- failover to secondary when primary dies.
          > >
          > > As far as the information about primary and secondary is concerned it is
          > > available in session ID.
          > >
          > > --Viresh Garg
          > >
          > > Chris Fraser wrote:
          > >
          > > > I've got a load balancer in front of my WLS cluster, and I'm trying to
          > > > set up load balancing based on WLS clustering. What I need to know to
          > > > do this is the offset within the cookie that's responsible for
          > > > determining which machine within the cluster to direct to.
          > > >
          > > > Any idea how I can get this information?
          > > >
          > > > thanks,
          > > > cfraser

Load Balancing in Reverse Proxy Mode

Hi,
Is the HTTP Load Balancing function working only in the Routing context or works it generally. I set the SJWPS as a Reverse Proxy like this
NameTrans fn="reverse-map" from="http://server1.domain.de" to="http://proxy.domain.de" rewrite-location="false" rewrite-content-location="false"
NameTrans fn="map" from="http://proxy.domain.de" to="http://server1.domain.de" rewrite-host="false"
NameTrans fn="map" from="/" to="http://server1.domain.de" rewrite-host="false"
Now the Proxy should do Load balancing with a second, mirrored server like http://server2.domain.de. How could I configure that?
Please help me.
InfoSeeker09
Edited by: InfoSeeker09 on Sep 11, 2009 2:18 AM

if you need to route / provide load balancing between 2 hosts, then you will need to have Route SAF . you can use web server 7 reverse proxy cli or gui to get this. however, you might want to start from a fresh configuration to avoid reverse-map / map that you have experimented with does not overlap with the 'Route' functionality that you seem to need here
here are some reference content
http://blogs.sun.com/amit/entry/setting_up_a_reverse_proxy
http://blogs.sun.com/meena/entry/configuring_reverse_proxy_in_sun
http://www.sun.com/bigadmin/features/articles/web_server_zones.jsp

Site not accessible from the Load balanced web front end server - sharepoint 2010

I have a production environment with 2 WFE's(sp-wfe1 & sp-wfe2), 2 APP's and 2 SQL clustered VM's.
2 WFE's are load balanced using hardware load balancer.
An A-Record(PORTAL) is created in DNS for the virtual IP of the load balancer which points to the 2 WFE's.
A web application is created on the WFE's on port 80.
alternative access mapping is configured and the load balanced record "http://PORTAL" is used under the default zone.
Under IIS I have edited the bindings for the sharepoint site at port 80 and added the HOSTNAME as PORTAL.
Result: The site is accessible from outside the server and works fine.
ISSUE: The site is not accessible within the WFE's(sp-wfe1 & sp-wfe2).
When I browse the site from the WFE's server it ask for the credentials and when I enter the credentials and click OK it ask the credentials again and again and in the end displays a blank page.
Kindly help me in this issue because I am clueless and couldn't find anything helpful on the internet.
Regards,
Mudassar
MADDY-DEV Forum answers from Microsoft Forum

Loop back check.
http://www.harbar.net/archive/2009/07/02/disableloopbackcheck-amp-sharepoint-what-every-admin-and-developer-should-know.aspx

How to use the Load Balancer Plug-in to serve multiple domains

In SJSAS8.1 SE/EE the asadmin commands that create and maintain a load balancer configuration operate within a domain. When the load balancer configuration is exported an xml file is created that contains all the information for that domain. To make the load balancer plug-in balance the load for multiple domains, the loadbalancer.xml files can be manually merged to conatin the data that is exported from each domain's load balancer configuration.
For example, 2 domains are created, both having a load balancing configuration. After exporting both configurations using the asadmin export-http-lb-config command, the user would then cut and past the cluster information into the single loadbalancer.xml file that resides under the web server's config directory.
An example of the manually merged loadbalancer.xml file follows:
<?xml version="1.0" encoding="UTF-8"?>
<loadbalancer>
<cluster name="domain1">
<instance disable-timeout-in-minutes="30" enabled="true" listeners="http://localhost:1026 https://localhost:38181" name="i1"/>
<instance disable-timeout-in-minutes="30" enabled="true" listeners="http://localhost:1027 https://localhost:38182" name="i2"/>
<web-module context-root="ab" disable-timeout-in-minutes="30" enabled="true"/>
<health-checker interval-in-seconds="5" timeout-in-seconds="60" url="/"/>
</cluster>
<cluster name="domain2">
<instance disable-timeout-in-minutes="30" enabled="true" listeners="http://localhost:1029 https://localhost:38189" name="i3"/>
<instance disable-timeout-in-minutes="30" enabled="true" listeners="http://localhost:1030 https://localhost:38188" name="i4"/>
<web-module context-root="webservice" disable-timeout-in-minutes="30" enabled="true"/>
<health-checker interval-in-seconds="5" timeout-in-seconds="60" url="/"/>
</cluster>
<property name="response-timeout-in-seconds" value="60"/>
<property name="reload-poll-interval-in-seconds" value="5"/>
<property name="https-routing" value="false"/>
<property name="require-monitor-data" value="false"/>
<property name="route-cookie-enabled" value="true"/>
</loadbalancer>
Hope this helps - Mark

Mark, be my savior, I work for SUN as subcontractor at client site. the only one at site ...so I depend on this forum for solutions........
still having trouble failingover to second instance. I have two AccessManagers behind this loadbalancer.
Here is what I saw......
**************LOGS**********************
[20/Jun/2005:14:22:47] failure (15102): for host 128.114.65.13 trying to GET /amconsole/base/AMA
dminFrame, service-passthrough reports: timed out waiting for request body
[20/Jun/2005:14:22:47] warning (15102): reports: lb.runtime: ROUT1014: Non-idempotent request /
amconsole/base/AMAdminFrame cannot be retried.
So I went and updated the loadbalancer.xml (see at the end of the msg). Now I get a different kind of problem...
**************LOGS******************************
[20/Jun/2005:15:25:18] failure (15295): for host 128.114.65.13 trying to GET /amconsole/base/AMA
dminFrame, service-passthrough reports: timed out waiting for request body
[20/Jun/2005:15:25:18] info (15295): reports: lb.runtime: RNTM3003 : Error servicing the request : NoVal
Here is my loadbalancer.xml file...
<loadbalancer>
<cluster name="cluster1">
<instance name="instance1" enabled="true" disable-timeout-in-minutes="1" listeners="http://idm-test-1.ucsc.
edu:80 "/>
<instance name="instance2" enabled="true" disable-timeout-in-minutes="1" listeners="http://idm-test-2.ucsc.
edu:80 "/>
<web-module context-root="amconsole" disable-timeout-in-minutes="1" enabled="true" error-url="sun-http-lber
ror.html" >
<idempotent-url-pattern url-pattern="/*" no-of-retries="3" />
</web-module>
<web-module context-root="amserver" disable-timeout-in-minutes="1" enabled="true" error-url="sun-http-lberr
or.html" >
<idempotent-url-pattern url-pattern="/*" no-of-retries="3" />
</web-module>
<web-module context-root="ampassword" disable-timeout-in-minutes="1" enabled="true" error-url="sun-http-lb
error.html" />
<web-module context-root="amcommon" disable-timeout-in-minutes="1" enabled="true" error-url="sun-http-lberr
or.html" >
<idempotent-url-pattern url-pattern="/*" no-of-retries="3" />
</web-module>
<health-checker url="/" interval-in-seconds="15" timeout-in-seconds="2" />
</cluster>
<property name="reload-poll-interval-in-seconds" value="60"/>
<property name="response-timeout-in-seconds" value="30"/>
<property name="https-routing" value="false"/>
<property name="require-monitor-data" value="true"/>
<property name="active-healthcheck-enabled" value="true"/>
<property name="number-healthcheck-retries" value="3"/>
<property name="route-cookie-enabled" value="true" />
</loadbalancer>
**************************************************************

Load Balancing And the Login Server

We have just added load balancing to our cluster of 30980 portal servers. The load balancing works only sporadically. We noticed a round-robin approach was taken in the configuration guides, which is not acceptable to our infrastructure team.
Questions: Is there a problem with using load balancers such as Resonate with Oracle portal? If not, should one machine in the cluster be specifically identified as the login server? Can they each act as login servers for any of the others?

I have had the same problem.
I think whoever programmed the logon routine at that point should be fired immediately and banned from programming for life! Logging on is a very basic and well-understood task, and programmed gozillions of times since 1940s. Common sense and unwritten rules of programming dictate simply if you make something case-sensitive, then you should accept an input in its original form (i.e. password in smalls, or whatever) but not change it to uppercase and then work case-sensitively. Either this, or you program everything case-insensitively.
Fire that programmer or give him to us gollumvoice

Need help with load balancing and DNS proxy

Hi,
I need help on how to configure my router so it will work with my DNS proxy and load balancing.
I have a Linksys LRT224 router. I have two broadband connections from two separate ISPs,500Mbps each (WAN1 & WAN2). WAN1 has a static IP and WAN2 is dynamic assigned. I use Unlocator (www.unlocator.com) so I can access geographically restricted sites (Pandora, Netflix, etc.).
The problem I have is that unlocator registers only one IP address (WAN1 address) and since I am doing load balancing I have no way of knowing if the DNS request will go through the registered IP (WAN1) or through the other (WAN2). I am not an expert in routing or networking but I'm guessing I have a way of configuring the router so all the DNS requests go out through WAN1, right?
In the router's Dual WAN config page there is a section for Protocol Binding. I tried to configure but only managed to screw up the internet at home. I used:
DNS[UDP/53-53]->192.168.1.1-192.168.1.254(0.0.0.0-0.0.0.0)WAN2
Any help or suggestions are appreciated.
Alex

Good solution though. That's probably the only way you could do true Load Balancing anyway.
Please remember to Kudo those that help you.
Linksys
Communities Technical Support

Need help with load balancing and DNS proxy -Repost

Hi,
I need help on how to configure my router so it will work with my DNS proxy and load balancing.
I have a Linksys LRT224 router. I have two broadband connections from two separate ISPs,500Mbps each (WAN1 & WAN2). WAN1 has a static IP and WAN2 is dynamic assigned. I use Unlocator (www.unlocator.com) so I can access geographically restricted sites (Pandora, Netflix, etc.).
The problem I have is that unlocator registers only one IP address (WAN1 address) and since I am doing load balancing I have no way of knowing if the DNS request will go through the registered IP (WAN1) or through the other (WAN2). I am not an expert in routing or networking but I'm guessing I have a way of configuring the router so all the DNS requests go out through WAN1, right?
In the router's Dual WAN config page there is a section for Protocol Binding. I tried to configure but only managed to screw up the internet at home. I used:
DNS[UDP/53-53]->192.168.1.1-192.168.1.254(0.0.0.0-0.0.0.0)WAN2
Any help or suggestions are appreciated.
Alex

Good solution though. That's probably the only way you could do true Load Balancing anyway.
Please remember to Kudo those that help you.
Linksys
Communities Technical Support

Load Balance method for proxy - ISA or BlueCoat

Hi,
I would like to know that which load balance method such as src-ip, cookie or etc is most suitable for load balancing proxy servers such as ISA or Bluecoat. The Proxy will listen to many services - http, https, ftp, and etc. Thanks for the help.

The methods you mentioned are not loadbalancing technics, but stickyness features.
Stickyness is not always necessary.
Now, for caching devices, it is good to always send users requesting a same object to a single proxy, so that the same object is not cached in all the proxies.
Therefore, the solution in this case is loadbalancing with url hashing.
For HTTPs, if you terminate SSL on the loadbalancer, you can use the same solution.
For all the other traffic, I would suggest to start with roundrobin and see after a while if it requires some adjustments or not.
Gilles.

Problem loading page, error the proxy server is refusing entry

My computer crashed a week ago, with numerous viruses. After it was fixed, when I go into Firefox, the screen I get is Problem Loading Page, then in a dropdown box it says the proxy server is refusing connection. Cannot get into the internet. What can I do?

In Firefox 3.6.4 and later the default connection settings have been changed to "Use the system proxy settings".<br />
See "Firefox connection settings" in [[Server not found]]
You can find the connection settings in Tools > Options > Advanced : Network : Connection<br />
If you do not need to use a proxy to connect to internet then select No Proxy

Load balancing MS Winsock Proxy Server on WebNS 5.0

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