3.5.1 Matrix Server Upgrade Guide

Double Rolling Upgrades

This chapter describes how to upgrade Matrix Server on clusters that

meet these conditions:

• The nodes have 64-bit CPUs and are currently running in 32-bit mode,

but will upgrade to 64-bit mode.

• The nodes are currently running Matrix Server 3.1.2.

The rolling upgrade does not require any matrix downtime. Each server

is removed from the matrix, upgraded, and then returned to the matrix.

Rolling Upgrade Considerations

You should be aware of the following when upgrading to the Matrix

Server 3.5.1 release.

Order for Upgrading Servers

Servers must be upgraded one-at-a-time during the upgrade. The server

with the numerically highest primary IP address must be upgraded

first. Then continue to upgrade the servers in descending order of IP

address, with the server with the lowest primary IP address being

upgraded last.

If you have two networks and the IP addresses are ordered differently on

each network, you will need to determine the IP addresses by which the

servers are known to the matrix and then use those addresses to

determine the order for the upgrade.