How to achive failover & load balancing

Hi ,
I have installed WebLogic server 5.1,
I followed one documentation for clustering.
I don't know how to set up cluster configuration WebLogic.property file.
If you have any sample property please
send it to me,
Thanks

I think the best way is to follow the documentation.
Attached is my startup script.
Cheers - Wei
Sanjay <[email protected]> wrote in message
news:399959ba$[email protected]..
Hi ,
I have installed WebLogic server 5.1,
I followed one documentation for clustering.
I don't know how to set up cluster configuration WebLogic.property file.
If you have any sample property please
send it to me,
Thanks[swc1.cmd]

Similar Messages

Hot to do Failover/Load balance on CORBA C++ Client

I have a corba C++ client using Bea/Tuxedo 8.0 ORB talking to stateless session beans
on Weblogic Server 6.1/sp2.
Question:
If the wls server(s) is a cluster, how do I use this feature in my C++ client to
provide the failover/load balance?
Will the rmic generate idl which is cluster-aware if the EJBs are clustered?
Any help is appreciated.
Thanks,
steve

"steve" <[email protected]> writes:
I have a corba C++ client using Bea/Tuxedo 8.0 ORB talking to stateless session beans
on Weblogic Server 6.1/sp2.
Question:
If the wls server(s) is a cluster, how do I use this feature in my C++ client to
provide the failover/load balance?Currently, although the information is available to the client it does
not use it. This will probably change in a future release of Tuxedo,
but you should talk to your sales rep for details.
For now you can get some degree of failover by catching the
COMM_FAILURE exception and re-looking up CosNaming and your bean.
Will the rmic generate idl which is cluster-aware if the EJBs are clustered?The information is provided dynamically at runtime, so its independent
of the IDL.
andy

How to set up load balancing with overload server on css

can anyone tell me how to set up a load balancing config on css that will enable me to LB proxy caches and when they have too many connections then LB against an overload proxy-cache.
Such that when the normal proxy-cache farm is under the ceiling of max connections then the overload server is not used ?
I don't think redirect or sorry server will do this ?

see the below configuration,any question,just tell me.
service proxy-1
! below is the real ip of server
ip address 10.1.1.1
keepalive type icmp
active
service proxy-2
ip address 10.1.1.2
keepalive type icmp
active
! enter owner config-mode
owner proxy
! define a content rule,match what you want to load balancing
content rule-proxy
! below is virtual ip,it can be another ip segment
vip address 10.1.1.50
add service proxy-1
add service proxy-2
protocol any
advanced-balance sticky-srcip
active

How can I design Load Balancing for distant Datacenters? without single point of failure

Dear Experts,
We are using the following very old and passive method of redundancy for our cload SaaS but it's time to make it approperiate. Can youplease advise:
Current issues:
1. No load balancing. IP selection is based on primary and secondary IP configurations. If Primary fails to respond, IP record for DNS changes to secondary IP with TTL=1min
2. When primary server fails, it takes around 15 min for clients to access the servers. Way too long!
The target:
A. Activate a load balancing mechanism to utilized the stand-by server.
B. How can the solution be designed to avoid single point of failure? In the previous example, UltraDNS is a single point of failure.
C. If using GSS is the solution, how can it be designed in both server locations (for active redundancy) using ordinary DNS server?
D. How can HSRP, GSS, GSLB, and/or VIP be used? What would be the best solution?
Servers are running ORACLE DB, MS SQL, and tomcat with 2x SAN of 64TB each.

Hi Codlick,
the answer is, you cannot (switch to two web dispatchers).
If you want to use two web dispatchers, they need something in front, like a hardware load balancer. This would actually work, as WD know their sessions and sticky servers for those. But remember you always need a single point for the incoming address (ip).
Your problem really is about switchover groups. Both WD need to run in different switchover groups and need to switch to the same third software. I'm not sure if your switchover software can handle this (I'm not even sure if anyone can do this...), as this means the third WD needs to be in two switchover groups at the same time.
Hope this helps,
Regards,
Benny

IP failover, load balancing and notification...

Pretend I have the following setup/hardware:
Two intel xserves running 10.4. One is for http traffic the other https. The http server contains a static html website while the other server has a large dynamic database driven website and all of its pages require ssl encryption. I'll refer to the first as server 1 and server 2 for the other.
Now I want to implement a solution for providing high availability and performance.
If I wanted IP failover I would need two additional servers, one for the first webserver and the second for the other. Likewise if I wanted to address load balancing I would also need two additional servers, one for server 1 the other for server 2. Now my questions:
1) It seems implementing load balancing as described on page 32 of Apples High Availability pdf that this would also provide high availability like IP failover does. If two additional servers were purchased to provide high availability via a load balancing strategy would there be any need to implement IP failover? Does load balancing provide the same benefits as IP failover when talking about high availability? When if ever would one need to implement both strategies?
2) Can you somehow provide IP failover with only one server as the backup using the setup above (a third server to provide IP failover for both servers 1 and 2)? Assume the third server has all the data of both server 1 and server 2.
3) Is it possible to have Server Admin or Raid admin notify you of a problem via calling your cell phone or sending you a text message as opposed to only email, maybe via a third party solution? I think (not 100% sure) APC offers this when the power left in their batteries reaches a certain level.
Thanks.
G5 xserve Mac OS X (10.4.8)

1) There's generally no need to implement IP Failover at the server level if you're already using a separate load balancing solution. The load balancer should be able to take care of dealing with a failed server.
2) Good question - it's not clear whether IPFailover will failover for one machine or more than one.
3) Most cellphone providers offer an email-to-SMS gateway, allowing you to send an email to an email address that's forwarded to your phone as a text message. Check your cellphone provider for details on what that email address might be (e.g. Cingular uses <phonenumber>@cingularme.com, Verizon uses <phonenumber>@msg.myvzw.com, etc.

How to config CSM load balance of http combined https

In this case,when I config CSM for load balance http and https service separately was ok.2 VIPs , 2 Serverfarms, One for http , and one for https .But I found that the https would referred to http information on IIS , because when the client first to access http is ok,and then login by https ,the information is not right.So,how to config CSM in this case,any reply will be very be appreciated.

There are 2 different ways.
You could combine the 2 vserver into a single one by not specifying the tcp port.
Another solution would be to use the same sticky group for both vservers.
For example, you could use sticky srcip.
ie:
sticky 10 netmask /32 address source
vserver http
sticky 60 group 10
inservice
vserver https
sticky 60 group 10
inservice
Regards,
Gilles.
Thanks for rating this answer.

How to check the load balancing in Oracle 11gR2 2 node RAC

Dear All,
Can any one please assist me how to check whether the incoming connections are evenly distributing across the nodes..?
We have two nodes, when we check the sessions counts in both nodes, Most of the time we could see node -1 has more no of sessions than node-2..? So just wanted to know whether load balancing is happening or not ...? If not how to enable it and distribute the incoming connections evenly..?
Oracle 11gR2 / RHEL5

SQL> select inst_id,count(*) from gv$session where username is not null group by inst_id;
INST_ID COUNT(*)
1 43
2 40
Not sure how to check the users are connecting through scan or not ..? But below are scan setttings...
SQL> !srvctl config scan_listener
SCAN Listener LISTENER_SCAN1 exists. Port: TCP:1521
SCAN Listener LISTENER_SCAN2 exists. Port: TCP:1521
SCAN Listener LISTENER_SCAN3 exists. Port: TCP:1521
SQL> !srvctl status scan_listener
SCAN Listener LISTENER_SCAN1 is enabled
SCAN listener LISTENER_SCAN1 is running on node za-rac-prd-02
SCAN Listener LISTENER_SCAN2 is enabled
SCAN listener LISTENER_SCAN2 is running on node za-rac-prd-01
SCAN Listener LISTENER_SCAN3 is enabled
SCAN listener LISTENER_SCAN3 is running on node za-rac-prd-01
SQL> !srvctl config scan
SCAN name: rac_prd.abc.local, Network: 1/10.100.130.0/255.255.255.192/eth6.64
SCAN VIP name: scan1, IP: /rac_prd.abc.local/10.100.130.55
SCAN VIP name: scan2, IP: /rac_prd.abc.local/10.100.130.54
SCAN VIP name: scan3, IP: /rac_prd.abc.local/10.100.130.53
SQL>

How are JNDI lookups load balanced through software?

Presumably they are not generally speaking.
          I can see how HTTP Requests are via HttpClusterServlet but how are the
          JNDI lookups handled if the client isn't specify a specific node in their
          intialcontext?


Is there any way of doing that with one nic only?
          Rajesh Mirchandani <[email protected]> wrote in message news:<[email protected]>...
          > You machine could be multi-homed.
          >
          > Robert Nicholson wrote:
          >
          > > Specifically how can I run multiple clusternodes on the same machine and
          > > still load balance my JNDI lookups across them if obviously they are not all
          > > running on the same port and I cannot use
          > >
          > > ht.put(Context.PROVIDER_URL, "t3://acme1,acme2,acme3:7001");
          > >
          > > like syntax.
          > >
          > > "Robert Nicholson" <[email protected]> wrote in message
          > > news:[email protected]..
          > > > Presumably they are not generally speaking.
          > > >
          > > > I can see how HTTP Requests are via HttpClusterServlet but how are the
          > > > JNDI lookups handled if the client isn't specify a specific node in their
          > > > intialcontext?
          > > >
          > > >

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>
**************************************************************

How to control a Load Balanced set in IaaS VMs using Text files

Hi,
I would like to control the Load Balanced nodes Using a resource to probe like active.txt in IIS than a Endpoint on the Management Portal.
The reason i need this is because the engineers in my team will have access to VMs but not to Management servers.
Any info on it is very helpful.
Thanks

Hi,
You can Control the access to the Load Balanced Set by using Network ACL. A Network Access Control List (ACL) is a security enhancement available for your Azure deployment. An ACL provides the ability to selectively permit or deny traffic for a virtual machine
endpoint. This packet filtering capability provides an additional layer of security.
Using Network ACLs, you can do the following:
Selectively permit or deny incoming traffic based on remote subnet IPv4 address range to a virtual machine input endpoint.
Blacklist IP addresses
Create multiple rules per virtual machine endpoint
Specify up to 50 ACL rules per virtual machine endpoint
Use rule ordering to ensure the correct set of rules are applied on a given virtual machine endpoint (lowest to highest)
Specify an ACL for a specific remote subnet IPv4 address.
Network ACLs can be specified on a Load balanced set (LB Set) endpoint. If an ACL is specified for a LB Set, the Network ACL is applied to all Virtual Machines in that LB Set. For example, if a LB Set is created with “Port 80” and the LB Set contains 3 VMs,
the Network ACL created on endpoint “Port 80” of one VM will automatically apply to the other VMs.
Hope this helps !
Regards,
Sowmya

How to enable Network load balancing for Enterprise portal

Hello,
We have installed EP 7.0 central instance(00) and dialog instance (01) and would like to enable network load balancing between these two EP servers.Have installed network balancer and the configuration has been done at network level.
The below URLs are being used for accessing the portal
Central instance :
http://CIhostname:50000/irj/portal
Dialog Instance:
http://DIhostname:50100/irj/portal
Both the port number has to be same for enabling load balancing.In order to acive this we have to map this port to http port by making some changes in Visual Administrator.
Can you please let me know step by step procedure or any link where i can find the same?
Appreciate your response
Thanks,
Vadi

Dear Jay,
Thnaks for your reply.
No...NLB will helpful in load balancing between different 2 different application (Ep)servers.
We are using microsoft network load balancer.Found the service http provider in VA for making those changes.
Any way thanks.
Regards,
Vadi

Is there any failover/load balancing among kjs engines on a single ias server?

I guess the question pretty much says it all. To be more explicit, if a kjs engine crashes, would all requests in progress be re-attempted on a different kjs?
Also, at what level is the user session information stored (kjs, kxs)?
Thanks a lot

hi Mihai,
Yes, we do have a load balancing mechanism between the KJSs in a single instance of the appserver. Requests from the kxs engine will be load balanced in a round robin fashion to the KJS engines.
Note that if a KJS engine crashes, then the requests will be directed to the other KJS engines, but if the KJS engine is 'hanging', then this redirection does not happen.
If the sessions are distributed, then they are stored in the KXS, but if they are lite, then they are stored in the KJS engine.
Hope that helps,
Vasanth

Cisco RV016 Failover & Load Balance Multi WAN Issue

Hi,
I think the RV016 is the correct device to buy for our small building but I am a little confused from the manual whether my intended configuration is possible, so if you could confirm if this is possible I would appreciate it.
We have a leased line as our primary connection (lets call it WAN1). If this connection is available I don't want to load balance on any other WAN.
We have 2 identical netgear 4G devices (call them WAN 2 and WAN 3). If the leased line is unavailable, I would like to then load balance these two WAN connections.
I then have a final connection, WAN4 as a slow adsl backup line. I do not know at present whether I want to load balance this in a WAN1 failure or just have it as a backup to WAN2 and WAN3 (WAN2 and WAN3 have a 20gb data limit each on their monthly contract allowance, if the leased line is down for more than a couple of days, which has unfortunately happened before, then we will hit this limit and then need to face either extremely expensive data charges or just use the ADSL alone)
Anyway, bottom line is under normal conditions I don't want to load balance. I only want to load balance WAN2 and WAN3 in the case of WAN1 failure.
Does anyone know if this is possible? If not, is there any other similar device which would suit?
Thank you
Ben

Hi Bencarroll01,
With RV016 you can achieve what you need.
RV016 support up to 7 WAN connection, and there is two working mode
Intelligent Balancer (Auto Mode): Select this option to balance traffic between all interfaces to increase the available bandwidth. The router balances the traffic between the interfaces in a weighted round robin fashion.
IP Group (By Users): Select this option to group traffic on each WAN interface by priority levels or classes of service (CoS). With this feature, you can ensure bandwidth and higher priority for the specified services and users. All traffic that is not added to the IP Group uses Intelligent Balancer mode. To specify the services and users, click the Edit icon for the WAN interface and then add protocol binding entries for each service, IP address, or range of IP addresses.
For our case we need to have RV016 configured with IP Group(By User) so in this case we can configure Protocol binding which we can specify and force all the traffic coming from any IP address from the local network going outside through WAN1. and other WAN connection they always UP but not traffic passing through them
now if WAN1 is Down, immediately the Rule for redirecting traffic to WAN 1 will be Disabled and all the traffic will be passing through the rest of the WAN connection
After that if the WAN1 is UP again the rule of protocol binding will be active again and again all the traffic will be through WAN 1
Please let me know if you have any others questions
Please rate this post or marked as answered to help other Cisco customers
Greetings
Mehdi

How to configure software load balancer for R12.1.3

Dear All,
I need to configure software load-balancer on application tiers and i need to know if its possible to have a software load-balancer in place of hardware load balancer if i need to route the load on two application nodes.
Thanks !

As we do not certify, nor support 3rd party loadbalancers we can not confirm that the Piranha loadbalancer will perform as expected with EBS. The basic minimum requirements or loadbalaning is that it has death detection, and session / cookie persistence We also typically require that a hardware loadbalancer is used. Internally we use F5 loadbalancers, and Cisco ACE.
What are the limitations of a software load balancer compared to hardware ? As mentioned above, your software balancer should has the capability of "death detection, and session/cookie persistence" -- More details can be found in (Implementing Load Balancing On Oracle E-Business Suite - Documentation For Specific Load Balancer Hardware [ID 727171.1]).
Oracle Web Cache can be used as a software load balancer (which is an Oracle product), but Oracle recommends you do not use it in production instances.
Thanks,
Hussein

Failover, load balancing, band sharing - problem

I would like to accomplish the following task:
SW-A and SW-B two separate subnets, without any contact with each other.
1. Router A would perform as a gateway for computers connected to SW-A
2. Router B would perform as a gateway for computers connected to SW-B
3. Router A transfer all of your unused band "gives" to Router B (office to run periodically and sometimes weeks or even months when it is not used, we do not want to band a wasted)
4. Router A has a band of 8/8
5. Router B has a band of 8/8 + unused band of router A
6. In case of failure of Router A router B takes over as the gateway to SW-A giving him 50% of the total band
7. In case of failure of Router B router A takes over as the gateway to SW-B giving him 75% of the total band
Is this possible? problem is point 3. and points. 5, whether Cisco can manage and share transfer unused band ? on which devices can be done? (routers, firewalls ?)
sorry for my english
Thanks
dk

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Posting
It might be either the partners you've spoken to are incompetent to do what you're requesting, or they and/or myself don't fully understand what you're asking. I will say I've done load sharing (outbound) using OER/PfR with HSRP/GLBP. Works very nice, and although there's some learning required, not really too difficult. PfR supports ingress sharing too, but ingress sharing can be very, very difficult to deal with. Much depends on what's on the "outside".
As to sizing a router, number of users often means little. What's important is how much (and sometimes kind of) traffic will be passing through the router. I've attached a Cisco document that will explain much about ISR performance for different traffic loads and kinds.

How to achive failover & load balancing

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