CenterOS7安装Redis，测试 Jedis 连接超时（connect timed out）

问题描述：Redis是安装在虚拟机的CenterOS7系统上，在Windows写的Jedis程序却一直报错连接超时，使用JedisPoolConfig添加连接时间，可是一直都没有效果

• 错误信息

redis.clients.jedis.exceptions.JedisConnectionException: java.net.SocketTimeoutException: connect timed out    at redis.clients.jedis.Connection.connect(Connection.java:155)    at redis.clients.jedis.BinaryClient.connect(BinaryClient.java:83)    at redis.clients.jedis.Connection.sendCommand(Connection.java:94)    at redis.clients.jedis.BinaryClient.set(BinaryClient.java:100)    at redis.clients.jedis.Client.set(Client.java:29)    at redis.clients.jedis.Jedis.set(Jedis.java:65)    at com.taotao.rest.jedis.JedisTest.testJedisSingle(JedisTest.java:16)    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)    at java.lang.reflect.Method.invoke(Method.java:606)    at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)    at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)    at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)    at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)    at org.junit.runners.ParentRunner.run(ParentRunner.java:363)    at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:86)    at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459)    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675)    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)Caused by: java.net.SocketTimeoutException: connect timed out    at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method)    at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85)    at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:339)    at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:200)    at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:182)    at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172)    at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)    at java.net.Socket.connect(Socket.java:579)    at redis.clients.jedis.Connection.connect(Connection.java:149)    ... 29 more

解决方法：

一、关闭CenterOS7的防火墙

[root@localhost ~]# systemctl stop firewalld.service 

如果使用iptables，使用如下关闭：

[root@localhost ~]#  systemctl stop iptables.service

二、如果使用Iptables 修改Iptables列表

[root@localhost ~]#  vim /etc/sysconfig/iptables

修改如下：（根据你所需，开放端口）

# sample configuration for iptables service# you can edit this manually or use system-config-firewall# please do not ask us to add additional ports/services to this default configuration*filter:INPUT ACCEPT [0:0]:FORWARD ACCEPT [0:0]:OUTPUT ACCEPT [0:0]-A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT-A INPUT -p icmp -j ACCEPT-A INPUT -i lo -j ACCEPT   -A INPUT -p tcp -m state --state NEW -m tcp --dport 21 -j ACCEPT-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 80 -j ACCEPT-A INPUT -p tcp -m state --state NEW -m tcp --dport 6379 -j ACCEPT-A INPUT -p tcp -m state --state NEW -m tcp --dport 7001:7006 -j ACCEPT-A INPUT -p tcp -m state --state NEW -m tcp --dport 8080 -j ACCEPT-A INPUT -p tcp -m state --state NEW -m tcp --dport 3306 -j ACCEPT-A INPUT -j REJECT --reject-with icmp-host-prohibited-A FORWARD -j REJECT --reject-with icmp-host-prohibitedCOMMIT