RedHat5.5-SSH免密登录
3台机器:192.168.197.130,131,132,从130免密登录130,131,132
1、在130机器一用户(hadoop)执行:
ssh-keygen-tdsa-P''-f~/.ssh/id_dsa
2、进去到.ssh目录,把此次公钥追加到authorized_keys文件中
catid_dsa.pub>>authorized_keys
3、把id_dsa.pub传送到131,132的.ssh目录下(如果目录不存在,就创建一个,并确保权限为700,重要)
4、在131,132的.ssh目录下:
catid_dsa.pub>>authorized_keys
确保authorized_keys全新为600(重要)
5、最后再130上测试:
ssh192.168.197.130
ssh192.168.197.131
ssh192.168.197.132
如果有问题,可以查看131,132的/var/log/secure日志
此后有有一新用户(hbase),同样要免密登录130,131,132:
方法一:重复以上2,3,4,5步骤即可(即复用上次hadoop生产的一对公私钥)
方法二:
1、hbase重新生成一堆公私钥:
ssh-keygen-tdsa-P''-f~/.ssh/hbase_dsa
2、进去到.ssh目录,把此次公钥追加到authorized_keys文件中
catid_dsa.pub>>authorized_keys
3、.ssh目录下创建config文件(确保全新为600),然后写入:
Hosthadoop130
HostName192.168.197.130
Userhadoop
IdentityFile~/.ssh/id_dsa
Hosthbase130
Hostname192.168.197.130
Userhbase
IdentityFile~/.ssh/hbase_dsa
Hosthadoop131
HostName192.168.197.131
Userhadoop
IdentityFile~/.ssh/id_dsa
Hosthbase131
Hostname192.168.197.131
Userhbase
IdentityFile~/.ssh/hbase_dsa
Hosthadoop132
HostName192.168.197.132
Userhadoop
IdentityFile~/.ssh/id_dsa
Hosthbase132
Hostname192.168.197.132
Userhbase
IdentityFile~/.ssh/hbase_dsa
4、最后再130上测试:
sshhbase130
sshhbase131
sshhbase132
sshhadoop130
sshhadoop131
sshhadoop132