一、我在阿里云买了个云主机ECS，在上面部署了一个Redis，并开启了远程连接，我在本地，通过IP+端口+用户名+密码，远程连接到Redis是一点问题都没有的。
二、现在我将项目部署到阿里云主机上去了。
我在启动项目的时候，一直给我报一个错误：
[2018-05-04 15:50:04] ERROR: cant resolve localhost address
java.net.UnknownHostException: iZbp17cj14ulhfrlj02rkaZ: iZbp17cj14ulhfrlj02rkaZ: Name or service not known
at java.net.InetAddress.getLocalHost(InetAddress.java:1505) ~[?:1.8.0_171]
at redis.clients.jedis.HostAndPort.getLocalHostQuietly(HostAndPort.java:105) [jedis-2.9.0.jar!/:?]
at redis.clients.jedis.HostAndPort.<clinit>(HostAndPort.java:12) [jedis-2.9.0.jar!/:?]
at redis.clients.jedis.JedisFactory.<init>(JedisFactory.java:37) [jedis-2.9.0.jar!/:?]
at redis.clients.jedis.JedisPool.<init>(JedisPool.java:185) [jedis-2.9.0.jar!/:?]
at redis.clients.jedis.JedisPool.<init>(JedisPool.java:169) [jedis-2.9.0.jar!/:?]
at org.springframework.data.redis.connection.jedis.JedisConnectionFactory.createRedisPool(JedisConnectionFactory.java:275) [spring-data-redis-1.8.10.RELEASE.jar!/:?]
说的是主机名无法解析。三、首先查看Linux的主机名
root@iZbp17cj14ulhfrlj02rkaZ:~# hostname
iZbp17cj14ulhfrlj02rkaZ
root@iZbp17cj14ulhfrlj02rkaZ:~# 四、编辑/etc/hosts
root@iZbp17cj14ulhfrlj02rkaZ:~# vi /etc/hosts五、将主机名添加到localhost后面 
六、再次启动，成功。
