centos7防火墙导致spring boot访问mongodb是出现异常查看详情http://blog.csdn.net/hkh_1012/article/details/44899561
环境描述:
数据库:mongodb3.0.1
数据库系统:centos7,(虚拟机,最小安装)
数据库驱动:mongo-java-driver-3.0.0.jar
问题描述:shell环境下用mongo客户端程序能正常连接mongod,但java程序始终报错。
java代码很简单,如下:
[java] view plain copy
Mongo mg = new Mongo(“192.168.59.128”,27017);
DB db = mg.getDB(“mydb”);
for(String s:db.getCollectionNames()){
System.out.println(s);
}
报错如下:
四月 05, 2015 8:26:27 下午 com.mongodb.diagnostics.logging.JULLogger log
信息: Cluster created with settings {hosts=[192.168.59.128:27017], mode=SINGLE, requiredClusterType=UNKNOWN, serverSelectionTimeout=’30000 ms’, maxWaitQueueSize=50}
四月 05, 2015 8:26:28 下午 com.mongodb.diagnostics.logging.JULLogger log
信息: No server chosen by ReadPreferenceServerSelector{readPreference=primary} from cluster description ClusterDescription{type=UNKNOWN, connectionMode=SINGLE, all=[ServerDescription{address=192.168.59.128:27017, type=UNKNOWN, state=CONNECTING}]}. Waiting for 30000 ms before timing out
四月 05, 2015 8:26:48 下午 com.mongodb.diagnostics.logging.JULLogger log
信息: Exception in monitor thread while connecting to server 192.168.59.128:27017
com.mongodb.MongoSocketOpenException: Exception opening socket
at com.mongodb.connection.SocketStream.open(SocketStream.java:63)
at com.mongodb.connection.InternalStreamConnection.open(InternalStreamConnection.java:114)
at com.mongodb.connection.DefaultServerMonitor$ServerMonitorRunnable.run(DefaultServerMonitor.java:127)
at java.lang.Thread.run(Unknown Source)
Caused by: java.net.SocketTimeoutException: connect timed out
at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method)
at java.net.DualStackPlainSocketImpl.socketConnect(Unknown Source)
at java.net.AbstractPlainSocketImpl.doConnect(Unknown Source)
at java.net.AbstractPlainSocketImpl.connectToAddress(Unknown Source)
at java.net.AbstractPlainSocketImpl.connect(Unknown Source)
at java.net.PlainSocketImpl.connect(Unknown Source)
at java.net.SocksSocketImpl.connect(Unknown Source)
at java.net.Socket.connect(Unknown Source)
at com.mongodb.connection.SocketStreamHelper.initialize(SocketStreamHelper.java:50)
at com.mongodb.connection.SocketStream.open(SocketStream.java:58)
… 3 more
Exception in thread “main” com.mongodb.MongoTimeoutException: Timed out after 30000 ms while waiting for a server that matches ReadPreferenceServerSelector{readPreference=primary}. Client view of cluster state is {type=UNKNOWN, servers=[{address=192.168.59.128:27017, type=UNKNOWN, state=CONNECTING, exception={com.mongodb.MongoSocketOpenException: Exception opening socket}, caused by {java.net.SocketTimeoutException: connect timed out}}]
at com.mongodb.connection.BaseCluster.createTimeoutException(BaseCluster.java:370)
at com.mongodb.connection.BaseCluster.selectServer(BaseCluster.java:101)
at com.mongodb.binding.ClusterBinding$ClusterBindingConnectionSource.(ClusterBinding.java:75)
at com.mongodb.binding.ClusterBinding$ClusterBindingConnectionSource.(ClusterBinding.java:71)
at com.mongodb.binding.ClusterBinding.getReadConnectionSource(ClusterBinding.java:63)
at com.mongodb.operation.OperationHelper.withConnection(OperationHelper.java:166)
at com.mongodb.operation.ListCollectionsOperation.execute(ListCollectionsOperation.java:172)
at com.mongodb.operation.ListCollectionsOperation.execute(ListCollectionsOperation.java:80)
at com.mongodb.Mongo.execute(Mongo.java:736)
at com.mongodb.Mongo$2.execute(Mongo.java:723)
at com.mongodb.OperationIterable.iterator(OperationIterable.java:47)
at com.mongodb.OperationIterable.forEach(OperationIterable.java:66)
at com.mongodb.MappingIterable.forEach(MappingIterable.java:50)
at com.mongodb.MappingIterable.into(MappingIterable.java:60)
at com.mongodb.DB.getCollectionNames(DB.java:223)
at mongodbtest.TestMongodbCurd.main(TestMongodbCurd.java:13)
报错信息中有“Exception opening socket”推测应该是java程序与服务器建立连接时报错,
执行命令ps -aux | grep mong,查看mongod进程,结果显示mongod运行正常。
root 2139 1.1 6.9 631964 70364 ? Sl 16:15 0:48 mongod -f /usr/local/mongodb/mongodb-linux-x86_64-3.0.1/bin/mongodb.conf
执行命令netstat -ntlp ,查看数据库27017端口监听是否正常,结果正常
tcp 0 0 0.0.0.0:27017 0.0.0.0:* LISTEN 2139/mongod
执行命令 cat /usr/local/mongodb/mongodb-linux-x86_64-3.0.1/bin/mongodb.conf,再次查看mongod的启动配置文件,结果如下,仍没有问题
dbpath = /usr/local/mongodb/data/db
logpath = /usr/local/mongodb/logs/mongodb.log
#bind_ip = 192.1168.59.128
port = 27017
fork = true
#nohttpinterface = true
至此,再结合shell下mongo客户端可以正常使用,基本可以推断不是mongodb数据库的问题,应该是系统安全设置的问题,首先想到的是防火墙。
查看centos7的官方文档,知道centos7最小安装默认只安装防火墙的动态配置规则服务(firewalld),静态配置规则服务(iptables与ip6tables)需要另行安装。
安装防火墙静态配置规则服务,并设置成可用状态
yum install iptables-services
systemctl mask firewalld.service
systemctl enable iptables.service
systemctl enable ip6tables.service
修改配置:vi /etc/sysconfig/iptables
-A INPUT -p tcp -m state –state NEW -m tcp –dport 22 -j ACCEPT
-A INPUT -p tcp -m state –state NEW -m tcp –dport 27017 -j ACCEPT
停用动态规则服务,启用静态规则服务
systemctl stop firewalld.service
systemctl start iptables.service
systemctl start ip6tables.service
再次运行java程序,得到结果如下:
信息: Opened connection [connectionId{localValue:2, serverValue:3}] to 192.168.59.128:27017
inventory
person
personInfo
system.indexes
testData
与想要的结果一致。