Mysql Cluster求助！！
Mysql Cluster配置，一台管理，两台数据节点，两台sql节点，数据节点连接管理节点的状态为什么一直处于starting状态？sql节点一直连不上管理节点.用的是RHEL 7.0, mysql-cluster-gpl-7.5.6-linux-glibc2.5-x86_64
ndb_mgm> show
Cluster Configuration
---------------------
2 node(s)
id=2 @192.168.0.15(mysql-5.7.18 ndb-7.5.6, starting, Nodegroup: 0)
id=3 @192.168.0.17(mysql-5.7.18 ndb-7.5.6, starting, Nodegroup: 0)
1 node(s)
id=1 @192.168.0.19(mysql-5.7.18 ndb-7.5.6)
2 node(s)
id=4 (not connected, accepting connect from 192.168.0.11)
id=5 (not connected, accepting connect from 192.168.0.21)
管理节点配置：
NoOfReplicas=2
DataMemory=512M
IndexMemory=180M
HostName=192.168.0.19
NodeId=2
HostName=192.168.0.15
DataDir=/usr/local/mysql/data
NodeId=3
HostName=192.168.0.17
DataDir=/usr/local/mysql/data
NodeId=4
HostName=192.168.0.11
NdeId=5
HostName=192.168.0.21
数据节点配置：
ndbcluster
symbolic-links=0
ndb-connectstring=192.168.0.19
basedir=/usr/local/mysql
datadir=/usr/local/mysql/data
socket=/usr/local/mysql/mysql.sock
ndb-connectstring=192.168.0.19
SQL节点：
socket=/usr/local/mysql/mysql.sock
ndbcluster
ndb-connectstring=192.168.0.19:1186
basedir=/usr/local/mysql
datadir=/usr/local/mysql/data
socket=/usr/local/mysql/mysql.sock
pid-file=/usr/local/mysql/data/mysql.pid
log-error=/usr/local/mysql/data/mysql.err
ndb-connectstring=192.168.0.19:1186
connect-string=192.168.0.19:1186
登陆到MYSQL里面看到
| Ndb_cluster_node_id | 0 |
| Ndb_config_from_host | 192.168.0.19 |
| Ndb_config_from_port | 1186 |
| Ndb_number_of_data_nodes | 0 |
| Ndb_number_of_ready_data_nodes | 0
没有获取的到node_id,防火墙，iptables都已禁用，求大神帮忙看看什么问题，小弟多谢了！！！
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