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