Definition: By "backward compatible client update" we mean specifically those clients updates where no variables (e.g. YAIM variables) are to be changed and no new variables are added to configuration.

This definition is more restrictive than necessary (the addition of new variables can be in most cases considered as backward compatible).
Technical considerations behind this restriction:

  • The release notes can be reduced to the minimum allowing, eventually, to skip the pre-deployment for these particular updates.
  • The installation can be centrally managed because no active collaboration is requested by the administrator of the partner sites

The patches ... will be identified and flagged by SA3

Implementation Note:
This could be done using a particular attribute (flag) in Savannah (e.g. preview=[Y|N]). The creation of a new state in the certification process (e.g. Status="Preview") is instead not advisable, because this would affect the workflow for all the services, also those ones for which the concept is not applicable.

... a number of selected production sites (PP Silver Partners)

Implementation Note:
We will work with a reduced number of "friendly sites" in production willing to cooperate (the proposed list, based on the size of the size, the potential local interest and the "attitude" to experimentation is : CERN; LIP; RAL/MANCHESTER; CNAF). The deployment at those sites will happen, as in the previous case, before the integration with YAIM. In most cases, however, the only intervention needed to the "friendly" site administrator will be to make a copy of the production setenv script in the appropriate path.
The deployment in the pilot of a new release will be announced by an e-mail. Separate acknowledgments by the collaborating sites are expected and an escalation mechanism (direct calls) has to be set-up for missing acks. Once the configuration is confirmed to be done, we reconnect to point 5 in the previous case (same notification and feedback mechanism)

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Topic revision: r2 - 2008-04-09 - AntonioRetico
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