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Re: [cellml-discussion] PMR staging/teaching server data wipe/restructuring


Chronological Thread 
  • From: Tommy Yu <tommy.yu AT auckland.ac.nz>
  • To: cellml-discussion AT lists.cellml.org
  • Subject: Re: [cellml-discussion] PMR staging/teaching server data wipe/restructuring
  • Date: Tue, 20 Mar 2018 17:20:18 -0400
Hi,

Due to various delays, the staging instance was not refreshed with restored
data last month. Going forward, please expect that the data on the staging
instance be wiped periodically without warning. On the other hand, wiping of
the data on the teaching instance will have warnings in place.

The staging instance will be fully wiped and restored using the VM
installation scripts that are now done for this purpose in the next few hours.

Cheers,
Tommy.

On 14/02/18 19:50, Tommy Yu wrote:
> 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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