Specifications

Equalizer Installation and Administration Guide 65
6 Administering Virtual Clusters
A virtual cluster is a collection of servers with a single network visible IP address. All client
requests come into Equalizer through a cluster IP address, and are routed by Equalizer to the
appropriate server in the cluster, according to the load balancing options set on the cluster.
The following sections show you how to create and manage virtual clusters and the servers they
contain:
• “Working with Virtual Clusters” on page 66
• “Adding a Virtual Cluster” on page 67
• “Advanced Cluster Fields and Flags” on page 71
• “Deleting a Virtual Cluster” on page 74
• “Configuring a Cluster’s Load-Balancing Options” on page 74
• “Providing FTP Services on a Virtual Cluster” on page 78
• “Configuring a Cluster to Use Server Agents” on page 78
• “Enabling Persistent Sessions” on page 80
• “Using Active Content Verification (ACV)” on page 83
• “HTTPS Header Insertion” on page 85
• “Specifying a Custom Header for HTTPS Clusters” on page 85
• “Performance Considerations for HTTPS Clusters” on page 86
• “Managing Servers” on page 87
• “Adding a Server to a Cluster” on page 88
• “Deleting a Server” on page 90
• “Adjusting a Server’s Static Weight” on page 90
• “Shutting Down a Server Gracefully” on page 92
• “Setting Maximum Connections per Server” on page 94
• “Setting Maximum Connections on a Cluster:” on page 94
• “Setting Maximum Connections on a Server:” on page 95
• “Using a Hot Spare in a Cluster with a Maximum Connections Limit” on page 96
• “Testing Virtual Cluster Configuration” on page 97