The full log is :
2019-11-06 14:59:57,010+08 ERROR
[org.ovirt.engine.core.bll.provider.network.SyncNetworkProviderCommand]
(EE-ManagedThreadFactory-engineScheduled-Thread-79) [497583f7] Command
'org.ovirt.engine.core.bll.provider.network.SyncNetworkProviderCommand' failed:
EngineException: (Failed with error Connection refused (Connection refused) and code
5050)
2019-11-06 14:59:57,011+08 INFO
[org.ovirt.engine.core.bll.provider.network.SyncNetworkProviderCommand]
(EE-ManagedThreadFactory-engineScheduled-Thread-79) [497583f7] Lock freed to object
'EngineLock:{exclusiveLocks='[3a2f66a1-82c2-414f-a532-62f6c36389c9=PROVIDER]',
sharedLocks=''}'
2019-11-06 15:00:11,996+08 INFO
[org.ovirt.engine.core.bll.provider.network.AddNetworkWithSubnetOnProviderCommand]
(default task-72) [4117e052-5919-4ca7-aafa-4f34e65ed19d] Running command:
AddNetworkWithSubnetOnProviderCommand internal: false. Entities affected : ID:
ed88fc90-59d3-4a6a-9a11-c9861a8be95f Type: StoragePoolAction group
CREATE_STORAGE_POOL_NETWORK with role type ADMIN