A main system configuration difference between a GroupWise system in a clustering environment and a GroupWise system in a regular environment is that you need to create a separate domain to house each GroupWise gateway, including the Internet Agent. The Internet Agent is faster and more stable when it runs on the same server with its domain. In a cluster, creating a separate domain for the Internet Agent ensures that the Internet Agent and its domain always fail over together.
Section 43.4, Internet Agent Clustering Worksheet lists all the information you need as you set up the Internet Agent in a Microsoft cluster. You should print the worksheet and fill it out as you complete the tasks listed below:
The considerations involved in planning a domain for the Internet Agent are much the same as planning any other domain. In preparation, review Planning a New Domain
, then print and fill out the Domain Worksheet
in Domains
in the GroupWise 7 Administration Guide.
Keep in mind the following cluster-specific details:
When you specify the location for the domain directory on the Domain Worksheet, include the shared disk where you want the domain directory to be located.
Do not concern yourself with the GroupWise agent information on the Domain Worksheet. You can stop with item 10. You will plan the MTA installation later.
When you have completed the Domain Worksheet, transfer the key information from the Domain Worksheet to the Internet Agent Clustering Worksheet.
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Under Item 1: Resource Group for Internet Agent, transfer the disk drive to the Internet Agent Clustering Worksheet. Under Item 2: Internet Agent Domain Name, transfer the domain name and directory to the Internet Agent Clustering Worksheet. |
The Internet Agent resource group is similar to the GroupWise resource groups you have already set up, as described in Section 41.5, Planning GroupWise Resource Groups and Creating GroupWise Resource Groups. The Internet Agent resource group contains a domain whose only role is to connect the Internet Agent into your clustered GroupWise system. It also contains two agent service resources, one for the MTA that services the domain and one for the Internet Agent. If you plan to have more than one Internet Agent in the cluster, they must never fail over to the same node.
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Under Item 1: Resource Group for Internet Agent, specify the network name and other required information for the Internet Agent resource group. |
To ensure successful short name resolution, add entries for the Internet Agent network name to support your preferred methods of short name resolution, as described in Configuring Short Name Resolution.
As with the MTA and the POA, the Internet Agent needs cluster-unique port numbers. As part of planning to install the MTA and POA, you should already have determined the resource group IP address and cluster-unique port numbers for the Internet Agent and its MTA as you filled out the Network Address Worksheet. If you do not have a filled-out copy of this worksheet for your system, print it now and fill in current system information.
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Under Item 5: MTA Network Information, transfer the resource group IP address and cluster-unique port numbers from the Internet Agent section of the Network Address Worksheet to the Internet Agent Clustering Worksheet. Under Item 7: Internet Agent Network Information, transfer the resource group IP address (the same as for its MTA) and the cluster-unique Internet Agent port number from the Internet Agent section of the Network Address Worksheet to the Internet Agent Clustering Worksheet. |
The Internet Agent receives incoming messages on the IP address of the Internet Agent resource group. Your firewall configuration must be modified to allow inbound TCP/IP traffic from the Internet to the Internet Agent IP address on the following standard ports:
By default, the Internet Agent sends outgoing messages on the IP address of the node where it is running. If you decide to use this default configuration, your firewall must be configured to allow outbound TCP/IP traffic from all nodes on the Internet Agent resource group’s possible owners list.
If the Internet Agent has a large number of nodes in its possible owners list, you could configure the Internet Agent to send outgoing messages to a relay host, which would then send them out through the firewall using its own IP address rather than the IP address of the particular node where the Internet Agent is running. This reduces the amount of modification to your firewall required to set up the Internet Agent. However, if the relay host goes down, all outgoing messages are delayed.
As another alternative, you can configure the Internet Agent to use its resource group IP address for sending as well as receiving messages. Setup instructions for this configuration are provided in Forcing Use of the Internet Agent Secondary IP Address, which you can complete after installing the Internet Agent.
In preparation for installing the Internet Agent, configure your firewall as needed to handle the Internet Agent’s use of node and resource group IP addresses when sending and receiving messages.
The default Internet Agent installation directory is c:\grpwise\gwia. As with the MTA and the POA, you can choose to install the Internet Agent and its MTA to each node in the cluster or to the shared disk of the Internet Agent resource group. For a discussion of these alternatives, see Deciding Where to Install the Agent Software, which describes the issues in the context of planning MTA and POA installations. As with the MTA and POA, the Internet Agent and its MTA must be installed as Windows services.
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Under Item 4: MTA Installation Location and Item 6: Internet Agent Installation Location, mark whether you will install the Internet Agent and its MTA to the shared disk of the Internet Agent resource group or to each node in the cluster. If necessary, specify where the MTA startup file and the Internet Agent configuration file (gwia.cfg) will be stored. |
Follow the instructions in Planning the Windows Agent Installation to plan the MTA installation for the Internet Agent domain, then return to this point. After you follow the instructions, you will have a filled-out Windows Agent Worksheet to use when you install the MTA.
IMPORTANT:Do not install the Windows MTA until you are instructed to do so in Section 43.2, Setting Up the Internet Agent in a Cluster.
Aside from the cluster-specific issues discussed in the preceding sections, the considerations involved in planning to install the Internet Agent are the same in a Microsoft cluster as for any other environment. Review NetWare and Windows: Installing the Internet Agent Software
, then print and fill out the GroupWise Internet Agent Installation Worksheet
in Installing the GroupWise Internet Agent
in the GroupWise 7 Installation Guide. You need this information as you install the Internet Agent in your cluster.
IMPORTANT:Do not install the Internet Agent software until you are instructed to do so in Section 43.2, Setting Up the Internet Agent in a Cluster.