Run ansible via command line using with_items

Question

I have item list of IPs:

server_hosts: - { host: '1.1.1.1' } - { host: '10.10.10.10' }

I want to pass only one of the items in the command line:

ansible-playbook base.yml -i ${host}, --extra-vars "env_name=lab server_hosts={host:'${1.1.1.1}'} "

but this gives an error of:

{"failed": true, "msg": "the field 'args' has an invalid value, which appears to include a variable that is undefined. The error was: 'unicode' object has no attribute 'host'\n\nThe error

Any advice how to pass a specific item from list in the command line?

It wouldn't hurt if you also revealed what shell you were using, because bash will stumble on this command. Yet ${host} looks bash-like. — techraf
– techraf, Commented Dec 26, 2016 at 12:59
the command is editted here, but it passes and run the pre tasks ( from jenkins) but fail on the task using the list items — A1001
– A1001, Commented Dec 26, 2016 at 13:02
I repeat: bash will return bad substitution when you try to execute it. Please edit your question to include a verifiable example. Right now it's a pure fabrication and you are only wasting readers' time. — techraf
– techraf, Commented Dec 26, 2016 at 13:13
Not to mention the title has nothing to do with the content of the question. You don't even bother to show what you run with_items. — techraf
– techraf, Commented Dec 26, 2016 at 13:22
I have removed the host from server_hosts: - { host: '1.1.1.1' } - { host: '10.10.10.10' } and this accepted the server_hosts='{1.1.1.1}' in the cmd. FYI — A1001
– A1001, Commented Dec 26, 2016 at 14:42

Konstantin Suvorov · Accepted Answer · 2016-12-26 15:35:50Z

Please pay attention to a side note here:

Note: Values passed in using the key=value syntax are interpreted as strings. Use the JSON format if you need to pass in anything that shouldn’t be a string (Booleans, integers, floats, lists etc).

So, you should use:

--extra-vars '{"env_name":"lab","server_hosts":{"host":"1.1.1.1"}}'

Otherwise you end up with server_hosts as string, not an object.

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