hadoop 启动报错

Question

[root@fanggq bin]# uname -aLinux fanggq 2.6.32-358.el6.x86_64 #1 SMP Tue Jan 29 11:47:41 EST 2013 x86_64 x86_64 x86_64 GNU/Linux[root@fanggq bin]# ./start-all.sh Warning: $HADOOP_HOME is deprecated.starting namenode, logging to /opt/hadoop-1.2.1/libexec/../logs/hadoop-root-namenode-fanggq.outThe authenticity of host 'localhost (127.0.0.1)' can't be established.RSA key fingerprint is c3:25:3e:06:18:50:d6:c5:98:ce:2d:7b:da:ff:ca:7b.Are you sure you want to continue connecting (yes/no)? yPlease type 'yes' or 'no': y安装JDK和hadoop都没有问题，配置文件按视频的来配置，namenode格式化也是成功的，就是启动时报错

Answer 1

环境变量有问题

Answer 2

报的什么错，能否截图？