play_hosts
is a list of all machines for a play. I want to take these and use something like format()
to rewrite them like rabbitmq@%s
and then join them together with something like join()
. So:
{{ play_hosts|format(???)|join(', ') }}
All the examples of format use piping where the input is the format string and not a list. Is there a way to use these (or something else) to accomplish what I want? The output should looks something like:
['rabbitmq@server1', 'rabbitmq@server2', rabbitmq@server3', ...]
The jinja2 doc describes format like this:
format(value, *args, **kwargs)
Apply python string formatting on an object:
{{ "%s - %s"|format("Hello?", "Foo!") }}
-> Hello? - Foo!
So it gives three kinds of input but doesn't describe those inputs in the example, which shows one in the pipe and the other two passed in via args. Is there a keyword arg to specify the string that's piped? Please help, python monks!
In ansible you can use regex_replace filter:
{{ play_hosts | map('regex_replace', '^(.*)$', 'rabbitmq@\\1') | list}
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