Redis開啟遠端登入連線。
今天使用jedis客戶端api連線遠端連線redis的時候，一直報錯，如下：
redis.clients.jedis.exceptions.JedisConnectionException: java.net.ConnectException: Connection refused: connect at redis.clients.jedis.Connection.connect(Connection.java:164) at redis.clients.jedis.BinaryClient.connect(BinaryClient.java:80) at redis.clients.jedis.Connection.sendCommand(Connection.java:100) at redis.clients.jedis.Connection.sendCommand(Connection.java:91) at redis.clients.jedis.BinaryClient.auth(BinaryClient.java:551) at redis.clients.jedis.BinaryJedis.auth(BinaryJedis.java:2047) at sy.test.TestJedis.setUp(TestJedis.java:18) 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:47) at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12) at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44) at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:24) at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27) at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:271) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50) at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238) at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63) at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236) at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53) at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229) at org.junit.runners.ParentRunner.run(ParentRunner.java:309) at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50) at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197) Caused by: java.net.ConnectException: Connection refused: connect 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:158) ... 30 more
原來是redis預設只能localhost登入，所以需要開啟遠端登入。解決方法如下：
在redis的配置檔案redis.conf中，找到bind localhost註釋掉。
註釋掉本機,區域網內的所有計算機都能訪問。
band localhost 只能本機訪問,區域網內計算機不能訪問。
bind 區域網IP 只能區域網內IP的機器訪問, 本地localhost都無法訪問。
驗證方法：
[[email protected] ~]# ps -ef | grep redis root 2175 1 0 08:15 ? 00:00:05 /usr/local/bin/redis-server *:6379
/usr/local/bin/redis-server *:6379 中通過"*"就可以看出此時是允許所有的ip連線登入到這臺redis服務上。
注意事項：
今天再設定遠端訪問的時候，在啟動Redis的時候報錯：Creating Server TCP listening socket *:6379: unable to bind socket（Redis一定不能設定成後臺執行，否則終端不會有任何錯誤顯示）。
上網搜尋說各種原因的都有，有的說是Redis版本的bug(我用的版本是3.2.0)，我是參考以下幾篇文章解決了這個問題：
https://github.com/antirez/redis/issues/3241
http://blog.csdn.net/qq_25797077/article/details/51986455
http://stackoverflow.com/questions/8537254/redis-connect-to-remote-server
我沒有註釋掉bind 127.0.0.1，而是將bind 127.0.0.1 改成了bind 0.0.0.0。
參考文章：
1.http://www.oschina.net/question/579073_113004?fromerr=YBv8RRYl