Last Updated on Saturday, 09 December 2006 04:41 Written by Konic Sunday, 03 December 2006 16:47
Tomcat Cluster Session Replication how to is a document that describes how we can setup a tomcat 5.5 cluster with apache web server frontend using in-memory session replication.
Tomcat 5.5.x has significant performance improvements than tomcat 5.0, mostly because of java 5 (from performance metrics taken with jmeter - http://jakarta.apache.org/jmeter/ about 50% faster in compilation of classes/jsp/servlets). In our example we will use 1 apache instance that load balance requests along 4 instances of tomcat servers in 2 different servers.
Last Updated on Wednesday, 05 April 2006 23:40 Written by Konic Wednesday, 05 April 2006 01:05
SNMP MRTG for Windows HowTo is a guideline to install and see some performance metrics from windows nodes through mrtg. Last Updated on Saturday, 16 February 2008 13:24 Written by Theofilos Saturday, 16 February 2008 13:18
You need to have two or more NICs on your server and multiple distribution switches on network in order to have a redundant network connection for your server. Depending on the operating system your server is running, different configurations (and names) are used. There are usualy two possible schemes to do this, one using load balancing method, and the other using fail-over option.
In the following lines you can find both redhat and solaris configuration examples to implement this.
Read more: Server high availability, using network redundant connection
Last Updated on Monday, 24 January 2011 08:51 Written by cram Tuesday, 26 February 2008 23:05
Solaris 10 zones Howto
Last Updated on Monday, 26 February 2007 21:44 Written by Konic Monday, 26 February 2007 21:34
VLAN is an acronym for Virtual Local Area Network. Several VLANs can co-exist on a single physical switch, which are configured via software (Linux commands and configuration files) and not through hardware interface (you still need to configure switch).
Hubs or switch connects all nodes in a LAN and node can communicate without a router. For example, all nodes in LAN A can communicate with each other without the need for a router. If a node from LAN A wants to communicate with LAN B node, you need to use a router. Therefore, each LAN (A, B, C and so on) are separated using a router.
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