我在一个网络中有两台服务器。
- 192.168.202.5 网络掩码 255.255.255.0
- 192.168.202.32 网络掩码 255.255.255.0
在第二台服务器上我开始MySQL使用Docker Compose.
docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
dec33e6c66fe mysql/mysql-cluster "/entrypoint.sh mysq…" 2 hours ago Up 2 hours (healthy) 1186/tcp, 2202/tcp, 33060/tcp, 0.0.0.0:3306->3306/tcp ndb_ndb_mysqld_1
56ccfd399288 mysql/mysql-cluster "/entrypoint.sh ndbd" 2 hours ago Up 2 hours (unhealthy) 1186/tcp, 2202/tcp, 3306/tcp, 33060/tcp ndb_ndb_data_node_1_1
1f6a2f2db72c mysql/mysql-cluster "/entrypoint.sh ndb_…" 2 hours ago Up 2 hours (unhealthy) 2202/tcp, 3306/tcp, 0.0.0.0:1186->1186/tcp, 33060/tcp ndb_ndb_mgmd_1
netstat -nta
Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address Foreign Address State
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN
tcp 0 0 192.168.202.32:22 10.40.20.156:34458 ESTABLISHED
tcp 0 36 192.168.202.32:22 10.40.20.156:35210 ESTABLISHED
tcp6 0 0 :::3306 :::* LISTEN
tcp6 0 0 :::22 :::* LISTEN
tcp6 0 0 :::1186 :::* LISTEN
端口 3306 打开。在第二台服务器（192.168.202.32）上我尝试：
telnet 192.168.202.32 3306
Trying 192.168.202.32...
Connected to 192.168.202.32.
Escape character is '^]'.
`
5.7.25-ndb-7.6.9-cluster-gpl
访问是并且一切都可用。
但是当我尝试从第一台服务器（从 192.168.202.5）执行相同操作时，我收到连接超时：
telnet 192.168.202.32 3306
Trying 192.168.202.32...
telnet: connect to address 192.168.202.32: Connection timed out
[oracle@host-192-168-202-5 ~]$
但同时在端口 22 上我可以连接。我尝试禁用Iptables，但没有帮助。我不明白为什么会发生这种情况以及在哪里寻找更多信息？
我用OracleLinux7。
uname -a
Linux host-192-168-202-5 3.8.13-118.6.1.el7uek.x86_64