MongoDB on Java link Server appears with connect time out problem

Exception information

December 22, 2014 5:27:58 pm Com.mongodb.DBTCPConnector initdirectconnection
Warning: Exception executing ismaster command on/192.168.1.249:10003
Java.io.IOException:couldn ' t connect to [/192.168.1.249:10003] Bc:java.net.SocketTimeoutException:connect timed out
At Com.mongodb.dbport._open (dbport.java:214)
At Com.mongodb.DBPort.go (dbport.java:107)
At Com.mongodb.DBPort.go (dbport.java:88)
At Com.mongodb.DBPort.findOne (dbport.java:143)
At Com.mongodb.DBPort.runCommand (dbport.java:148)
At Com.mongodb.DBTCPConnector.initDirectConnection (dbtcpconnector.java:539)
At Com.mongodb.Mongo.getMaxBsonObjectSize (mongo.java:600)
At Com.mongodb.dbapilayer$mycollection.insert (dbapilayer.java:233)
At Com.mongodb.dbapilayer$mycollection.insert (dbapilayer.java:205)
At Com.mongodb.DBCollection.insert (dbcollection.java:57)
At Com.mongodb.DBCollection.insert (dbcollection.java:100)
At FileUpload.UploadFileTest.test (uploadfiletest.java:35)
At FileUpload.UploadFileTest.main (uploadfiletest.java:41)


December 22, 2014 5:28:08 pm Com.mongodb.DBTCPConnector initdirectconnection
Warning: Exception executing ismaster command on/192.168.1.249:10003
Java.io.IOException:couldn ' t connect to [/192.168.1.249:10003] Bc:java.net.SocketTimeoutException:connect timed out
At Com.mongodb.dbport._open (dbport.java:214)
At Com.mongodb.DBPort.go (dbport.java:107)
At Com.mongodb.DBPort.go (dbport.java:88)
At Com.mongodb.DBPort.findOne (dbport.java:143)
At Com.mongodb.DBPort.runCommand (dbport.java:148)
At Com.mongodb.DBTCPConnector.initDirectConnection (dbtcpconnector.java:539)
At Com.mongodb.DBTCPConnector.checkMaster (dbtcpconnector.java:518)
At Com.mongodb.DBTCPConnector.say (dbtcpconnector.java:174)
At Com.mongodb.DBTCPConnector.say (dbtcpconnector.java:155)
At Com.mongodb.dbapilayer$mycollection.insert (dbapilayer.java:249)
At Com.mongodb.dbapilayer$mycollection.insert (dbapilayer.java:205)
At Com.mongodb.DBCollection.insert (dbcollection.java:57)
At Com.mongodb.DBCollection.insert (dbcollection.java:100)
At FileUpload.UploadFileTest.test (uploadfiletest.java:35)
At FileUpload.UploadFileTest.main (uploadfiletest.java:41)

Some of the usual workarounds. For example, the connection timeout due to network reasons can be solved. It's pretty specific.

http://lingqi1818.iteye.com/blog/1317433

But assuming that these things are not linked, it means that some ports on the server are not open and cannot be connected.

Workaround to first configure the IP table to open some ports, and then restart server.

Root enters server

Vi/etc/sysconfig/iptables

Join

-A input-m state--state new-m tcp-p TCP--dport 10002-j ACCEPT (the port opened here is 10002)

Save exit

Service Iptables Restart

Try the code again, get it done!

MongoDB on Java link Server appears with connect time out problem