This passes any arguments given to 'matrix-postgres-cli' to the 'psql' command.
Examples:
$ # start an interactive shell connected to a given db
$ sudo matrix-postgres-cli -d synapse
$ # run a query, non-interactively
$ sudo matrix-postgres-cli -d synapse -c 'SELECT group_id FROM groups;'
This adds into the Riot config.json the field
'default_server_config.m.homeserver.server_name'
with, by default, the value of the playbook's 'matrix_domain' variable.
Riot displays this string in its login page and will now say 'Sign in to
your Matrix account on example.org' (the server name) instead of 'Sign
in ... on matrix.example.org' (the server domain-name).
This string can be configured by setting the playbook variable
'matrix_riot_web_default_server_name'
to any string, so we can make Riot say for example 'Sign in ... on Our
Server'.
Invitations weren't working for me until I added 'nocanon' to these additional places. Until then, invitations failed with "Invalid signature for server ..." errors, as in https://github.com/matrix-org/synapse/issues/3294 .
I didn't check whether the user_directory/search proxy line also needs it, I just assumed it should have it too.
The other two proxy lines in this example also include a 'retry=0' parameter. That's a separate issue; I haven't touched it here.
Julian Foad
