Interesting question. Yes a hardware load balancers works perfectly. In the configuration of a load balancer you create a virtual IP address and it will split off the requests between two servers. <br><br>I accomplished rougly the same thing with linux-ha. I created two Virtual IP addresses. Pointed half the apps at one and half the apps at the other. Both of them will fail over to the other side.
<br><br>What I want to do but did not have the time is use the Linux Virtual Server Project. Ontop of linux-HA. In this way the VIRTUAL IP can float between the two productions systems. That is really the best way to go. (and you save on the cost of load balancing hardware)
<br><br>There might be some ldap proxy software (sun makes something I think) that can prooxy ldap and redirect it in a HA type way. I have not looked into that. If you go with the linux virtual server project keep me in the loop. Let me know how it turns out.
<br><br>Edward<br><br><div><span class="gmail_quote">On 2/19/07, <b class="gmail_sendername">Ankur Agarwal</b> <<a href="mailto:ankur_agwal@yahoo.com">ankur_agwal@yahoo.com</a>> wrote:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<div>Hi,</div> <div> </div> <div>We have a weblogic app server based application which talks to RedHat LDAP through weblogic's security provider APIs.</div> <div> </div> <div>On Production env we have set-up master-master LDAP servers
i.e. there are two master LDAP servers. How should i make my application connect to these 2 servers?</div> <div> </div> <div>Should there be a front-end load balancer to which my application will make request and then load balancer will handle requests to one of the LDAP servers?
</div> <div> </div> <div>Also note that we have weblogic cluster in Prod with 2 instances. So should i make each instance point to one LDAP server? But in that case how will automatic failover work if one of the LDAP servers go down?
</div> <div> </div> <div>Would be great if people can suggest any standard solution to deal with such situations. </div> <div> </div> <div>regards,</div><span class="sg"> <div>Ankur</div></span><span class="ad"><p>
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