Doron , good to hear a high availability solution for Fedora. few months ago , we had a 2 node fedora cluster setup for one of our clients in a production env on amazon cloud.
>How many instances of Fedora do you use? fedora web app on 2 tomcats , load balanced through a amazon ELB on round robin. >How are content updates replicated across servers and data >centers? we used glusterfs for file system clustering of fedora data folder . had to fix some code in fedora to handle the concurrency issues of updating resourceIndex and temp upload location. >How is load-balancing and failover implemented across servers and >data centers? file system load balancing and failover was handled by glusterfs. requests to tomcat servers were just load balanced using amazon elastic load balancer. failover was handled by amazon auto scaling for all nodes. >Are any components clustered, and how is the clustering >accomplished? load balanced thro ELB for tomcat(fedora web app)+ mysql cluster + glusterfs file system clustering for fedora data. we hit a lot of issues with clustering (both tomcat and mysql), you must be knowing how bad mysql cluster works on virtualized servers :-( btw, if anybody has got tomcat cluster(session replication) and mysql cluster working on any virtualized env(where IPs keep changing, and multicast is not supported, like in amazon cloud), let me know please. >How often do you perform backups, and what is the backup >mechanism? we had script to do rsync every few hours to a separate high availability disk (Elastic block store) ------------------------------------------------------------------------------ What You Don't Know About Data Connectivity CAN Hurt You This paper provides an overview of data connectivity, details its effect on application quality, and explores various alternative solutions. http://p.sf.net/sfu/progress-d2d _______________________________________________ Fedora-commons-users mailing list Fedora-commons-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/fedora-commons-users
