Do not set omero.glacier2.IceSSL.Ciphers on OS X environments

[sbesson]

Encountered during the deployment of a local development server (OS X 12.6, Java 11, Python 3.8, OpenSSL 1.1.1) after configuring the local self-signed certificates using omero certificates. Using the current version of omero-py, the connections to the server were broken:

(omeroserver) sbesson@Sebastiens-MacBook-Pro-2 omero-certificates % omero config get                   
omero.certificates.commonname=localhost
omero.certificates.key=server.key
omero.certificates.owner=/L=OMERO/O=OMERO.server
omero.data.dir=/Users/sbesson/OMERO.repo
omero.glacier2.IceSSL.CAs=server.pem
omero.glacier2.IceSSL.CertFile=server.p12
omero.glacier2.IceSSL.Ciphers=HIGH
omero.glacier2.IceSSL.DefaultDir=/Users/sbesson/OMERO.repo/certs
omero.glacier2.IceSSL.Password=********
omero.glacier2.IceSSL.ProtocolVersionMax=TLS1_2
omero.glacier2.IceSSL.Protocols=TLS1_0,TLS1_1,TLS1_2
(omeroserver) sbesson@Sebastiens-MacBook-Pro-2 omero-certificates % omero admin start
WARNING: Your server has not been configured for production use.
See https://docs.openmicroscopy.org/omero/latest/sysadmins/server-performance.html?highlight=poolsize
for more information.
No descriptor given. Using etc/grid/default.xml
Waiting on startup. Use CTRL-C to exit
(omeroserver) sbesson@Sebastiens-MacBook-Pro-2 omero-certificates % grep SSL /opt/OMERO.current/var/log/master.err 
   plug-in initialization failed: IceSSL: no such cipher HIGH
(omeroserver) sbesson@Sebastiens-MacBook-Pro-2 omero-certificates % omero login root@localhost
Previous session expired for root on localhost:4064
Password:
Ice.ConnectionRefusedException: localhost isn't running

After removing omero.glacier2.IceSSL.Ciphers following a discussion with @chris-allan and restarting the server:

(omeroserver) sbesson@Sebastiens-MacBook-Pro-2 omero-certificates % omero config set omero.glacier2.IceSSL.Ciphers
(omeroserver) sbesson@Sebastiens-MacBook-Pro-2 omero-certificates % omero admin restart 
Waiting on shutdown. Use CTRL-C to exit
.WARNING: Your server has not been configured for production use.
See https://docs.openmicroscopy.org/omero/latest/sysadmins/server-performance.html?highlight=poolsize
for more information.
No descriptor given. Using etc/grid/default.xml
Waiting on startup. Use CTRL-C to exit
(omeroserver) sbesson@Sebastiens-MacBook-Pro-2 omero-certificates %  omero login root@localhost
Previously logged in to localhost:4064 as root
Password:
Created session for root@localhost:4064. Idle timeout: 10 min. Current group: system

This is an edge case and potentially something we don't necessarily want to handle in this plugin anyways as OS X is not part of the operating systems we officially support. But at minimum this PR can act as a knowledge base for anyone running into a similar issue

[jburel]

I think this will fix issue for team member wanting to run local server. The fix will not affect production server

[will-moore]

I still haven't managed to run the sever locally on M1 Mac, or on local Docker etc (but not because of this issue).

[chris-allan]

I still haven't managed to run the sever locally on M1 Mac, or on local Docker etc (but not because of this issue).

Is that due to not having ARM architecture wheels for Ice or something else?

[will-moore]

@chris-allan Don't know. I made quite limited notes... https://gist.github.com/will-moore/a1c18155a192a43d893122b6451bdc10

$ omero admin start ...
FileNotFoundError: [Errno 2] No such file or directory: 'icegridnode'