Dell Wyse ThinLinux 1.0.3 Administrator’s Guide

This appendix details the improved method of upgrading a mixed environment of cloud clients using the mixed_env_upgrade addon that is installed on the cloud client and the DelayedUpdate.URL=/…./$PLATFORM/…. key that is contained in the ini file. This new method improves the upgrade process so that there is control over limiting the upgrade to particular platforms of thin clients in the network.

When thin clients running on different platforms,for example, Wyse 5020 thin client, Wyse 7020 thin client, Wyse 3030 LT thin client, and Wyse 5060 thin client, are in the same network and are upgraded using a single upgrade image on the server, the thin clients that are incompatible with the current image will not upgrade properly. The problem occurs because all the thin clients are looking in the same path on the server for the upgrade image. The new method of upgrading, addresses this issue and provides a way of upgrading only thin clients in the network for which the upgrade is intended. The mixed_env_upgrade addon will parse the ini setting and set the root path on the thin client. This root path will be relative to the type of thin client platform, and therefore after setting the root path, the thin clients will be looking in different locations on the server for the upgrade image intended for their specific platform.