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Juno Controller reboot result nova compute state down

Hi All

i am checking behavior of the controller/compute system behavior after reboots

Ubuntu 14.04 / Juno / 2014.2.2

after rebooting controller it takes long time (hours) for the nova compute service to change state to UP

i managed to fix the problem by changing the Linux TCP keepalive parameters

https://bugs.launchpad.net/fuel/+bug/1289200 answer #18

originally was

# cat /proc/sys/net/ipv4/tcp_keepalive_time
  7200
# cat /proc/sys/net/ipv4/tcp_keepalive_intvl
  75
# cat /proc/sys/net/ipv4/tcp_keepalive_probes
  9

change it to

# echo 60 > /proc/sys/net/ipv4/tcp_keepalive_time
# echo 16 > /proc/sys/net/ipv4/tcp_keepalive_intvl
# echo 6 > /proc/sys/net/ipv4/tcp_keepalive_probes

this solve the problem , after controller reboot the nova compute is up

my question : is there openstack parameters that do the same effect ?

i am not so happy to change OS default parameters

thanks in advance

Uzi