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 outat 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 outat 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 config
uration
*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-prohibited COMMIT