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在使用 AWS 配置和尝试运行 4 节点/4 主机 MySQL 集群时，我在尝试向管理器注册第一个数据节点时遇到了障碍。

数据节点 (DN) 的公共 IP 与其 eth0 关联的 IP（我将其称为私有 IP）不同，这似乎是一个问题。因此，集群管理器似乎从 DN 接收到 NodeID:11 的传入请求，但源 IP 地址与 config.ini 中指定的 IP 不匹配。

这是我在尝试连接时在 DN 上遇到的错误：

2014-02-08 22:12:45 [ndbd] INFO     -- Angel connected to '<mg_public_ip>:1186'
2014-02-08 22:12:48 [ndbd] INFO     -- Angel allocated nodeid: 11
2014-02-08 22:12:49 [ndbd] ERROR    -- Could not fetch configuration/invalid configuration, error: 'The hostname this node should have according to the configuration does not match a local interface. Attempt to bind '<dn_public_ip>' failed with error: 99 'Cannot assign requested address''

强调“根据配置，此节点应具有的主机名与本地接口不匹配”

我花了 2 天时间在线寻找解决方案！luck。一位遇到此问题的发帖人建议创建一个网络别名，并将eth0 : 0设置为 DN 的公共 IP。这会产生以下日志：（此解决方案还需要配置路由器的 NAT）。

Unable to connect with connect string: nodeid=11,<mg_public_ip>:1186

我相信这是一个网络配置问题，MySQL和AWS可能会提供解决方法，但我还没有找到。任何见解将不胜感激！

细节：

DN Public IP == <dn_public_ip>
DN Private IP == <dn_private_ip>

管理器（MG）也有公私IP：

Manager Public IP == <mg_public_ip>
Manager Private IP == <mg_private_ip>

管理器配置有以下config.ini：

[ndbd default]
# Options affecting ndbd processes on all data nodes:
NoOfReplicas=2    # Number of replicas
DataMemory=80M    # How much memory to allocate for data storage
IndexMemory=18M   # How much memory to allocate for index storage
                  # For DataMemory and IndexMemory, we have used the
                  # default values. Since the "world" database takes up
                  # only about 500KB, this should be more than enough for
                  # this example Cluster setup.

[tcp default]
# TCP/IP options:
# portnumber=2202   # This the default; however, you can use any
                  # port that is free for all the hosts in the cluster
                  # Note: It is recommended that you do not specify the port
                  # number at all and simply allow the default value to be used
                  # instead

[ndb_mgmd]
# Management process options:
hostname = <mg_private_ip>      # Private IP address of MGM node
datadir=/var/lib/mysql-cluster  # Directory for MGM node log files

[ndbd]
# Options for data node "A":
hostname=<dn_public_ip>         # Public address of data node A
datadir=/usr/local/mysql/data   # Directory for this data node's data files
NodeId=11

[ndbd]
# Options for data node "B":
hostname=***                    # Hostname or IP address
datadir=/usr/local/mysql/data   # Directory for this data node's data files
NodeId=12

[mysqld]
# SQL node options:
hostname=****                   # Hostname or IP address
                                # (additional mysqld connections can be
                                # specified for this node for various
                                # purposes such as running ndb_restore)
NodeId=21

数据节点 A 上的 ifconfig：

eth0      Link encap:Ethernet  HWaddr 22:00:0A:FE:87:82  
          inet <addr:dn_private_ip>  Bcast:*.*.*.*  Mask:255.255.255.192
          inet6 addr: ***** Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:9321 errors:0 dropped:0 overruns:0 frame:0
          TX packets:7950 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:739918 (722.5 KiB)  TX bytes:1194550 (1.1 MiB)
          Interrupt:25

_ndb_1_cluster.log 管理器：_

[MgmtSrvr] WARNING  -- Found timedout nodeid reservation for 11, releasing it
[MgmtSrvr] INFO     -- Nodeid 11 allocated for NDB at <dn_public_ip>
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