Open Stack

Hello All,

My openstack newton installation worked fine until today.
Now I am not able to start nova compute on compute nodes ....the following
errors appear in nova-compute.log:

2017-05-08 12:38:46.890 21922 INFO oslo.privsep.daemon
[req-706bded2-801b-479f-af25-41f2d7a44d83 - - - - -] Running privsep
helper: ['sudo', 'nova-rootwrap', '/etc/nova/rootwrap.conf',
'privsep-helper', '--config-file', '/usr/share/nova/nova-dist.conf',
'--config-file', '/etc/nova/nova.conf', '--privsep_context',
'vif_plug_ovs.privsep.vif_plug', '--privsep_sock_path',
'/tmp/tmpnSP2N3/privsep.sock']
2017-05-08 12:38:47.469 21922 CRITICAL oslo.privsep.daemon
[req-706bded2-801b-479f-af25-41f2d7a44d83 - - - - -] privsep helper command
exited non-zero (143)

I cheked the compute node /etc/sudoers.d/nova and it contains the following
lines:

Defaults:nova !requiretty

nova ALL = (root) NOPASSWD: /usr/bin/nova-rootwrap /etc/nova/rootwrap.conf *
nova ALL = (root) NOPASSWD: /usr/bin/privsep-helper *

Anynone can help me ?
Regards
Ignazio
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