haproxy nbproc and cpu-map config help

Hi All,

I’m trying to deploy with Ansible an haproxy.cfg config that will automatically render to the bellow :

#/etc/haproxy.cfg
“”"

nbproc 11

cpu-map 1 0
cpu-map 2 1
cpu-map 3 2
cpu-map 4 3
cpu-map 5 4
cpu-map 6 5
cpu-map 7 6
cpu-map 8 7
cpu-map 9 8
cpu-map 10 9
cpu-map 11 10

“”"

This will use all system CPU cores but leave 1 free to the operating system. I know I can use ansible_processor_vcpus
fact to get the number of cores but I’m having trouble regarding the logic of the “cpu-map” lines…

Any ideas ?

Regards,
N.