SSH 免密登录

准备工作

  • ubuntu 15 桌面版操做系统

操做步聚

安装sshpass

  • 可以免密码输入登录ssh
  • sudo apt-get install sshpass

本机免密登录

  • 这一部分不要放一循环体内，当然master节点，单独执行

  • rm -rf ~/.ssh

  • ssh-keygen -t dsa -P '' -f ~/.ssh/id_dsa

  • cat ~/.ssh/id_dsa.pub >> ~/.ssh/authorized_keys

循环部分

安装远程本机ssh免密登录远程本机

  • export TEMP_REMOTE_DIR=~/temp/id_dsa_dir

  • sshpass -p hadoop ssh s1 "rm -rf -f ~/.ssh"

  • sshpass -p hadoop ssh s1 "ssh-keygen -t dsa -P '' -f ~/.ssh/id_dsa"

  • sshpass -p hadoop ssh s1 "cat ~/.ssh/id_dsa.pub >> ~/.ssh/authorized_keys"

安装本机ssh免密登录远程

  • export TEMP_REMOTE_DIR=~/temp/id_dsa_dir

  • sshpass -p hadoop ssh s1 "rm -rf $TEMP_REMOTE_DIR"

  • sshpass -p hadoop ssh s1 "mkdir -p $TEMP_REMOTE_DIR"

  • sshpass -p hadoop scp -r ~/.ssh/id_dsa.pub s1:$TEMP_REMOTE_DIR

  • sshpass -p hadoop ssh s1 "cat ${TEMP_REMOTE_DIR}/id_dsa.pub >> ~/.ssh/authorized_keys"