Upgrading a Multiple-Server Installation

Technical Note 2191

Last Reviewed 02-Feb-2009
Applies to:
Mobility XE server 6.00 and higher
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Summary

For a server pool with more than one Mobility XE server, it's possible to upgrade your servers without having any client downtime. Follow the steps below to upgrade all of the servers in your pool incrementally. Additional upgrade information is covered in one or more of the following technotes:

• http://www.netmotionwireless.com/support/technotes/2240.aspx 
• http://www.netmotionwireless.com/support/technotes/2206.aspx
• http://www.netmotionwireless.com/support/technotes/2147.aspx

Upgrade Procedure

1. Even though you will be upgrading just the Mobility server software, not the Mobility warehouse, you should back up all your warehouse data before you begin the upgrade. See http://www.netmotionwireless.com/support/technotes/2129.aspx for backup instructions.

2. Take one Mobility server offline (in the Mobility console —> Server Status page) a day or so in advance of when you want to upgrade it. Current client connections on that server will not be disrupted, but new clients will not be allowed to connect. Over the course of a day or so, as clients disconnect and reconnect, they should all migrate over to the other server(s) in the pool. It doesn't matter if this is the server hosting the primary or standby warehouse—you can upgrade them in any order.

3. When a minimal number of clients are still connected to the offline server, upgrade Mobility server software on that machine. This will require a reboot, which will disconnect any clients remaining on that machine. At this point they should fail over to another server.

4. Bring the upgraded server back online.

5. Repeat this process for the other Mobility server(s) in your pool.

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