Could not determine which nodeid to use for this node

[d g]

Hi guys,

I got a problem with my mysql cluster Setup with 2 Management Nodes.

here my config.ini:

[ndbd default]
NoOfReplicas=2
DataMemory=12000M
IndexMemory=1024M
#DiskPageBufferMemory=1000M
NoOfFragmentLogFiles=32
FragmentLogFileSize=64M
MaxNoOfExecutionThreads=4
MaxDiskWriteSpeed=1000M
MinDiskWriteSpeed=100M
MaxNoOfConcurrentOperations=100000
RedoBuffer=32M
LockPagesInMainMemory=1
ODirect=1
datadir=/var/lib/mysql-cluster

[tcp default]
portnumber=2202
SendBufferMemory=2M
ReceiveBufferMemory=2M

[ndb_mgmd]
NodeId=1
hostname=192.168.0.19
datadir=/var/lib/mysql-cluster

[ndb_mgmd]
NodeId=2
hostname=192.168.0.20
datadir=/var/lib/mysql-cluster

[ndbd]
NodeId=10
hostname=192.168.0.17

[ndbd]
NodeId=11
hostname=192.168.0.18

[mysqld]
NodeId=20
hostname=192.168.0.17

[mysqld]
NodeId=21
hostname=192.168.0.18


If i try to start a management node i get the following error:
# ndb_mgmd -f /etc/my.cnf.d/config.ini --initial -vvvvv
MySQL Cluster Management Server mysql-5.6.29 ndb-7.4.11
2016-06-01 13:02:27 [MgmtSrvr] DEBUG -- Not alone on host 192.168.0.20, node 2 will also run here
2016-06-01 13:02:27 [MgmtSrvr] ERROR -- Could not determine which nodeid to use for this node. Specify it with --ndb-nodeid=<nodeid> on command line

if delete the management node section with id2 on node 1 and rhe section with id1 on node 2 bot node come up but ndb_mgm show shows only the mangement node.
from which i execute ndb_mgmcommand.

Regards
Denny