Setting Up A Group Of Web Servers - Novell ACCESS MANAGER 3.1 SP2 - ACCESS GATEWAY GUIDE 2010 Manual

In Figure 6-1, Access Gateway 1 and Access Gateway 2 have the same configuration except for the
reverse proxy listening address. They share the other configuration settings because they are
members of an Access Gateway cluster. This section explains how to create a group of Web servers,
how to add multiple proxy services and reverse proxies to an Access Gateway, and how to manage a
cluster of Access Gateways.
Section 6.1, "Setting Up a Group of Web Servers," on page 182
Section 6.2, "Using Multi-Homing to Access Multiple Resources," on page 183
Section 6.3, "Managing Multiple Reverse Proxies," on page 193
Section 6.4, "Managing a Cluster of Access Gateways," on page 196

6.1 Setting Up a Group of Web Servers

You can configure a proxy service to service a "virtual" group of Web servers, which adds load
balancing and redundancy. Each Web server in the group must contain the same material. When you
create the proxy service, you set up the first server by specifying the URLs you want users to access
and the rights the users need for each URL. When you add additional Web servers to the proxy
service, these servers automatically inherit everything you have configured for the first Web server.
Figure 6-2
DNS Name:
www.mytest.com
IP Address:
10.10.195.90:80
For this configuration, you use a single reverse proxy and proxy service. To add multiple Web
servers to a host:
1 In the Administration Console, click Devices > Access Gateways > Edit > [Name of Reverse
Proxy] > [Name of Proxy Service] > Web Servers.
2 In the Web Server List section, click New.
3 Specify the IP address or the fully qualified DNS name of another Web server for the "virtual"
group, then click OK.
4 Repeat
5 To save your changes to browser cache, click OK.
6 To apply the changes, click the Access Gateways link, then click Update > OK.
The Access Gateway Service uses a round robin algorithm to select which Web server to send
incoming requests to.
The Access Gateway Appliance can be configured to use round robin, or it can be configured to
perform a simple failover. Simple failover sends all the traffic to the first Web server as long as it is
available. Traffic is sent to another Web server in the list only when the first Web server is no longer
available. To configure this option, see
Servers," on page
182 Novell Access Manager 3.1 SP2 Access Gateway Guide
Adding Redundant Web Servers
Firewall
Request
Step 2 and Step 3 to add additional Web servers to the group.
70.
Access Gateway
Section 1.6.2, "Configuring TCP Connect Options for Web
test1.com
1
test2.com
test3.com
2
3