![]() The module also supports load-balancing HTTP calls to a set of Servlet containers while maintaining sticky sessions. Requests to worker2 in case that worker1 has a problem. The Apache Tomcat Connector, modjk, is a plug-in designed to allow request forwarding from Apache HTTP Server to a Servlet container. It was not designed as a replacement for other load-balancing mechanisms used for high traffic. The redirect flag on worker1 tells the load balancer to redirect the This is a simple implemention of a rules-based load balancer. Using the above script you may access to the Apache HTTPD server using a browser pointing to the URL: To setup the Load Balancer we still have to configure httpd to proxy the GeoServer tomcat instances. The other workers: # The advanced router LB worker We are using port 88 to avoid any overlap. Set to disabled in combination with the attribute redirect added to In the LoadBalancer Howto documentation however, another approach is given:įinally you can also configure hot spare workers by using activation Or stopped, workers of a larger distance are eligible for balancing. Only in case all workers below a given distance are in error, disabled Worker in case there is another usable worker with lower distance. A load balancer will never choose some balanced # Disable worker2 for all requests except failoverĪccording to the mod_jk documentation, it seems you would use distance to create a hot-standby, by setting the distance greater:Īn integer number to express preferences between the balanced workers # Define preferred failover node for worker1 Updated configuration worker.list=loadbalancer I hope there is sufficient information to deal with this problem. Same above just with changed port-numbers in Tomcat2. As it is a registration system, during the registration period we got very large number of concurrent request in the server. And one of the server holds the apache server. There are many software and hardware load balancing options available including H AProxy, Varnish, Pound, Perlbal, Squid, Nginx and so on. I have two physical server and each server holds 12 tomcat instance. ![]() JkWorkersFile /etc/apache2/workers.properties I have done apache tomcat load balancing before. SSLCertificateChainFile /path/to/.ca-bundleĪdded this to nf : LoadModule jk_module modules/mod_jk.so Workers.properties : worker.list=loadbalancer When this instance dies or crashes, then the 2nd Tomcat instance is activated and requests are served with it. Now, what I would like to do is, instead of running 2 instances of Tomcat, I would only like to run a single one. Both the Tomcat's are connected to web-server via AJP. There is an Apache web-server in front of the Tomcat's which acts as a load-balancer and failover, and is configured with mod_jk. The requests are either served via Tomcat1(server1) or Tomcat2(server2). Right now, I have 2 Tomcat instances which are in load-balance and fail-over and running all the time. I have a load-balancing and fail-over setup configured on our Debian X64 based server. ![]()
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