Open Stack

Hi guys,
in overall movement of Fuel to use secure sockets we think about wrapping
master node UI and API calls to SSL. But there are next caveat:

a) fuel-nailgun-agent cannot work via SSL now and need to be rewritten a
little. But if it will be rewritten in 7.0 and HTTPS on master node will be
forced by default, it will break upgrade from previous releases to 7.0 due
fact that after master node upgrade from 6.1 to 7.0 we will have HTTPS by
default and fuel-nailgun-agent on all environments won't upgraded, so it
won't be able to connect to master node after upgrade. It breaks seamless
upgrade procedure.

What options I see there:
1. We can forcedly enable SSL for master node and rewrite clients in 7.0 to
be able to work over it. In release notes for 7.0 we will write forewarning
that clients which want to upgrade master node from previous releases to
7.0 must also install new fuel-nailgun-agent to all nodes in all deployed
environments.

2. We can have both SSL and non-SSL versions enabled by default and rewrite
fuel-nailgun-client in 7.0 such way that it will check SSL availability and
be able to work in plain HTTP for legacy mode. So, for all new environments
SSL will be used by default and for old ones plain HTTP will continue to
work too. Master node upgrade will not be broken in this case.

3. We can do some mixed way by gradually rewrite fuel-nailgun-client, save
both HTTP and HTTPS for master node in 7.0 and drop plain HTTP in next
releases. It is just postponed version of first clause, so it doesn't seems
valid for me, actually.

I would be really glad to hear what you think about this. Thank you in
advance.
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