I am starting with ansible and sometimes I find things that I would be able
to program in python, bash or java but I do not know hot to handle in
ansible playbooks.
I want some remote machine to make an nmap on all local networks. This is
the command I want:
nmap -T4 -A -F -oX /tmp/${filename} 192.168.20.0/24 192.168.21.0/24
Being 192.168.20.0/24 and 192.168.21.0/24 two networks for eth0 and eth1
interfaces, when I do not know how many interfaces are there at playbook
execution time.
This is what I am actually using:
- command: nmap -T4 -A -F -oX /tmp/${filename}
${ansible_eth0.ipv4.network}/24
but this is not what I want because 24 is hardcoded (no obtained from
ansible_eth0.ipv4.mask fact) and eth1 is missing.
This information is already available in facts but I need some processing
for building nmap command line and I do not know how to scape to some
programming language to do this.
Things I think about:
- Can I pass the facts to an external or inline script that do this for me
and then I get de command line?
- Should I make an ansible module for nmap? But can I access facts from
within the module?
- I could also use the script module and upload a bash script to do it but
I would like to use facts and other configuration and logic available
locally as well as having granular local control of each operation, cooking
de command first and executing it then via command module for instance. If
I finally have to upload a complex script for each operation I do not see
the point in using ansible architecture instead of using bare paramiko or
ssh.
Thanks,
txemi.
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