If you use ansible templates to generate your config, and strong passwords, chances are that you know to use urlencode:
{
"postgres": "postgres://{{ db_user }}:{{ db_password|urlencode() }}@{{ db_server }}/{{ db_name }}",
}
to ensure that any special chars are not mangled. Unfortunately, as I discovered to my cost, the jinja filter does NOT encode a forward slash as %2F.
