Configuring Servers and Services | Extreme Networks Px Series

5Configuring Servers and Services

This chapter describes how to configure the real servers that will be load balanced, how to create groups of servers and put the real servers into them, and how to create a layer

4 or layer 7 virtual service. It contains the following sections:

•Configuring Real Servers on page 5-1

•Configuring Server Groups on page 5-2

•Configuring Virtual Services on page 5-3

•Configuration Example on page 5-6

Configuring Real Servers

The real servers are the actual web or application servers that fulfill the client requests. Typically, there are one or more identical real servers, each of which runs the same application and contains the exact same content.

To configure a server use the following command:

config server index <number> ipaddress <ipaddress> port <number>

max-connections <number> weight <number>

•Each server must have a unique index number. The index number can be used to perform operations on several different servers at once.

•Each server must have one IP address and port. The IP address is the actual IP address of the server, and the port number is the IP port that the server uses to

Px Series Application Switch Installation and Configuration Guide

5-1

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Extreme Networks Px Series manual Configuring Servers and Services, Configuring Real Servers

Contents

Published April Part number 100101-00 Rev Page Contents Installing the PxM Application Switch Module Configuring Servers and Services Index Index of Commands Introduction Preface Convention Description ConventionsText Conventions Icon Alerts you to Related Publications Preface Purpose of Server Load Balancing Server Load Balancing Concepts 1Conceptual view of server load balancing Terms Layer 4 Load Balancing Load Balancing Modes 2Single client-server transaction using layer Layer 7 Load Balancing and Content Analysis 3Establishing a layer 7 request Port Rewrite Getting Started on Load Balancing Configuration Getting Started on Load Balancing Configuration Page Installing the SummitPx1 Application Switch Overview of the SummitPx1 Application SwitchSummitPx1 Front View Color Indicates 1Px series application switch LEDs To DB-9 SummitPx1 Application Switch Rear ViewSignal Description 2DB-9 Adapter Pinouts Installing the SummitPx1 Application Switch Determining the LocationRack Mounting Free-Standing Powering On the SummitPx1 Setting Up Console Communication Configuring Switch IP Parameters Configuring the 10/100 Ethernet Management Port Installing I/O Modules Installing the PxM Application Switch Module Removing I/O Modules Removing I/O Modules Page Managing the Switch 1Command Syntax Symbols Using the Command-Line InterfaceAbbreviated Syntax and Command Completion Syntax Symbols 2Line-Editing Keys Symbol DescriptionLine-Editing Keys Specifying Text Values Configuring Management Access Command HistoryPrompt Text Changing the Default Passwords Modifying Accounts Creating Accounts Managing the PxM Command Description Configuring VLANs Contact Configuring Snmp4SNMP Configuration Settings Setting Description System SettingDescription Configuring DNS Client Services 5DNS Client Configuration Commands Using Secure Shell 2 SSH2 Config ssh2 key Enabling SSH2 for Inbound Switch Access Using SCP2 from an External SSH2 Client SSH2 Client Functions on the Switch Utilities Showing CPU LoadChecking Basic Connectivity Logging Starting the GlobalPx Content Director Agent Configuring a Startup Banner Message Internet DNS server Example Configuration Following commands configure all system-related facilities Page Configuring Real Servers Configuring Servers and Services Configuring Server Groups Configuring Virtual Services Layer 4 Port-based Load Balancing Layer 7 Virtual Services Configuring Traffic Tagging Configuration Example 1Tag SpecificationsTag Specification Description Tag Range Configuration Example Page Scheduling Policies Choosing Policies, Persistence Modes, and NAT Persistence Modes 1Scheduling PoliciesSpecifier Policy Description UDP Flow Persistence Client IP Persistence Mode 1Client IP persistence mode Cookie Persistence Modes Configuring Client IP Stickiness 2Self-identifying cookie persistence mode Persistence Modes Hashed Cookie Persistence Session Learned Cookie Persistence Mode 4Learned cookie persistence mode Configuring Cookie Stickiness SSL Session Identifier Persistence NAT Modes Full-NAT Mode Configuring Full-NAT Mode and Proxy IP Addresses Server-only Half-NAT Mode Configuring Half-NAT Mode Config source-flow name next-hop gateway-mode ip Real Syslog server SummitPx1 Configuration Example Page Domain and URL Switching URL Switching 1Typical switching scenario Domain Switching 2Domain switching example URL Switching Configuring URL Switching 3Simple URL switching example 4More Complicated URL switching example 5Hierarchical approach to pattern rules Creating Domain and URL Switching Rules 1Wildcard CombinationsWildcard Example Definition Modifying Existing URL Rules and Domains Application Servers Management net Configuration Example Page Using Vrrp with the SummitPx1 Configuring Redundancy Give backup systems lower priorities Adding and Configuring VRRPs Using Vrrp in Existing Redundant Networks Vrrp Automatic Synchronization 1Application switch using multiple VLANs Following commands can be passed from master to backup Using Esrp with the PxM Configuring Redundancy for the PxM For SW2 Configuring the PxM for Multiple VLANs Configuring a Default Gateway Overview Health Checks Server Startup Pacing Health Checking Procedure Configuring Health Checks Timers and CountersTypes of Health Checks You can disable health checks for a server group Page Monitoring the Switch 1Statistics Display CommandsShowing Traffic Statistics Displays packet-level counters for 2Configuration Display Commands Showing Configuration Details Configuration Displays SummitPx128 # show server details Status Displays Column Description Show health Information 5Management and Troubleshooting Commands Managing and Troubleshooting Operation CommandDescription Esrp Index Http GET AUX Page Index of Commands