pssh打通ssh通道

1. 下载pssh

wget http://parallel-ssh.googlecode.com/files/pssh-2.3.1.tar.gz 

tar zxvf pssh-2.3.1.tar.gz 

cd pssh-2.3.1/ 

python setup.py install

2.   生成ssh key

 ssh-keygen -t dsa

cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys

3.  使用 pscp 将authorized_keys 分发到要打通的服务器上

  pscp -r -A -h all_ip_list ~/.ssh/authorized_keys ~/.ssh/

4. 测试是否已打通

 pssh -i -h all_ip_list 'date'