CentOS6集羣免密碼登錄

CentOS6集羣免密碼登錄

vim /etc/sysconfig/network
NETWORKING=yes
HOSTNAME=bigdata-fy1
GATEWAY=192.168.239.2

vim /etc/hosts

192.168.239.131  bigdata-fy1
192.168.239.132  bigdata-fy2
192.168.239.133  bigdata-fy3

設置免密碼登錄

bigdata-fy1

首先配置bigdata-fy1節點的本機免密碼登錄

ssh-keygen -t rsa
cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys

然後在bigdata-fy1節點上執行scp命令(執行的時候需要輸入對應節點的密碼)

scp ~/.ssh/authorized_keys bigdata-fy2:~/
scp ~/.ssh/authorized_keys bigdata-fy3:~/

最後在bigdata-fy2、bigdat-fy3節點上分別執行如下命令：

cat ~/authorized_keys  >>  ~/.ssh/authorized_keys

bigdata-fy2

配置bigdata-fy2節點的本機免密碼登錄

ssh-keygen -t rsa
cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys

然後在bigdata-fy2節點上執行scp命令

scp ~/.ssh/authorized_keys bigdata-fy1:~/
scp ~/.ssh/authorized_keys bigdata-fy3:~/

最後在bigdata-fy1、bigdata-fy3節點上分別執行如下命令：

cat ~/authorized_keys  >>  ~/.ssh/authorized_keys

bigdata-fy3

配置bigdata-fy3節點的本機免密碼登錄

ssh-keygen -t rsa
cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys

然後在bigdata-fy3節點上執行scp命令

scp ~/.ssh/authorized_keys bigdata-fy1:~/
scp ~/.ssh/authorized_keys bigdata-fy2:~/

最後在bigdata-fy1、bigdata-fy2節點上分別執行如下命令：

cat ~/authorized_keys  >>  ~/.ssh/authorized_keys

至此實現了CentOS6集羣免密碼登錄