AWS Java客户端的未知主机异常？

Question

有没有其他人遇到这个例外？我们昨晚在负载测试中看到了它.主机名是正确的,通常正常.它昨晚刚开始抛出这个例外.无论是amanzon的随机DNS失败,还是Aws SDK for Java在加载时都会出现意外情况.

> Caused by: java.net.UnknownHostException: sdb.amazonaws.com
    at java.net.Inet6AddressImpl.lookupAllHostAddr(Native Method)
    at java.net.InetAddress$1.lookupAllHostAddr(InetAddress.java:867)
    at java.net.InetAddress.getAddressFromNameService(InetAddress.java:1246)
    at java.net.InetAddress.getAllByName0(InetAddress.java:1197)
    at java.net.InetAddress.getAllByName(InetAddress.java:1128)
    at java.net.InetAddress.getAllByName(InetAddress.java:1064)
    at org.apache.http.impl.conn.DefaultClientConnectionOperator.resolveHostname(DefaultClientConnectionOperator.java:242)
    at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:130)
    at org.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:149)
    at org.apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.java:121)
    at org.apache.http.impl.client.DefaultRequestDirector.tryConnect(DefaultRequestDirector.java:561)
    at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:415)
    at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:820)
    at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:754)
    at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:732)
    at com.amazonaws.http.AmazonHttpClient.executeHelper(AmazonHttpClient.java:266)

Answer 1

按以下方式更改 /etc/hosts：
old
127.0.0.1 localhost localhost.localdomain
new
127.0.0.1 localhost localhost.localdomain add-your-localhost-name-here