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You have a problem with nova-api service on Controller: netstat -lntp | grep 8774 iptables-save | grep 8774 ps -ef | grep nova-api

It should look like this :-

[root@juno1 ~(keystone_admin)]# netstat -lntp | grep 8774 tcp 0 0 0.0.0.0:8774 0.0.0.0:* LISTEN 1663/python
[root@juno1 ~(keystone_admin)]# iptables-save | grep 8774 -A INPUT -p tcp -m multiport --dports 8773,8774,8775 -m comment --comment "001 nova api incoming nova_api" -j ACCEPT [root@juno1 ~(keystone_admin)]# ps -ef | grep 1663 nova 1663 1 0 08:56 ? 00:02:00 /usr/bin/python /usr/bin/nova-api nova 3569 1663 0 08:56 ? 00:00:00 /usr/bin/python /usr/bin/nova-api nova 3572 1663 0 08:56 ? 00:00:00 /usr/bin/python /usr/bin/nova-api nova 3653 1663 0 08:56 ? 00:00:06 /usr/bin/python /usr/bin/nova-api nova 3655 1663 0 08:56 ? 00:00:06 /usr/bin/python /usr/bin/nova-api nova 3702 1663 0 08:56 ? 00:00:00 /usr/bin/python /usr/bin/nova-api nova 3703 1663 0 08:56 ? 00:00:00 /usr/bin/python /usr/bin/nova-api

You have a problem with nova-api service on Controller: Controller:

netstat -lntp | grep 8774
iptables-save | grep 8774
ps -ef | grep nova-api

nova-api

It should look like this :-

[root@juno1 ~(keystone_admin)]# netstat -lntp | grep 8774
tcp        0      0 0.0.0.0:8774            0.0.0.0:*               LISTEN      1663/python 
[root@juno1 ~(keystone_admin)]# iptables-save | grep 8774 -A INPUT -p tcp -m multiport --dports 8773,8774,8775 -m comment --comment "001 nova api incoming nova_api" -j ACCEPT [root@juno1 ~(keystone_admin)]# ps -ef | grep 1663 nova 1663 1 0 08:56 ? 00:02:00 /usr/bin/python /usr/bin/nova-api nova 3569 1663 0 08:56 ? 00:00:00 /usr/bin/python /usr/bin/nova-api nova 3572 1663 0 08:56 ? 00:00:00 /usr/bin/python /usr/bin/nova-api nova 3653 1663 0 08:56 ? 00:00:06 /usr/bin/python /usr/bin/nova-api nova 3655 1663 0 08:56 ? 00:00:06 /usr/bin/python /usr/bin/nova-api nova 3702 1663 0 08:56 ? 00:00:00 /usr/bin/python /usr/bin/nova-api nova 3703 1663 0 08:56 ? 00:00:00 /usr/bin/python /usr/bin/nova-api

/usr/bin/nova-api