Fule master tell me compute-node deployed success,but openstack not

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I install Juno through Fuel 6.0.

At first, I used Fuel master to deploy 2 controll nodes and 3 compute nodes. About 2 weeks later, I planed to add a new compute node. and Fuel dashboard tell me the compute node deployed finished.

On controlle node, with command "nova host-list", it shows the new compute node. But with "neutron agent-list", no message of the new compute node, only shows the services of the old 3 compute nodes.

So, I cannot nova-boot instances in the new compute-node.