haproxy nbproc and cpu-map config help

[Nicolas G]

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.