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Hi,

The PMR staging instance <https://staging.physiomeproject.org> will be
refreshed by end of this month (26 February), as there are some drastic
backend changes that need to be effectuated to ease deployment and
maintainability of the overall infrastructure. The teaching instance
<https://teaching.physiomeproject.org> will be rebuilt by end of next month
pending the stability of the new staged installation, with the production
server be rebuilt shortly after that.

Currently, the teaching PMR instance is simply an alias to the staging
instance. This was not an issue when both teaching and staging instances
received little to no usage, but now that the teaching instance is being
used, the debug settings for the staging instances results in performance
issues that would not be present otherwise.

The current plan follows:

- rebuild the staging server, user data could be in any state (depending on
the nature of the tests/deployment exercise to be executed, it can be either
a full restore from backup or a fresh installation with minimum user data).
- rebuild the teaching server, user data to be copied from existing teaching
server (this does not exclude future data wipe/partial restore from
production backups, as user data on teaching is never backed up).

Once the teaching server instance migration is successful, the same method
will be used to migrate the production instance. Do note that the plans for
teaching instance may change, so like before please treat that as a transient
data store rather than some permanent fixture.

Regards,
Tommy.

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• [cellml-discussion] PMR staging/teaching server data wipe/restructuring, Tommy Yu, 02/15/2018

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