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批量修改远程linux服务器密码

  #!/bin/bash

  # BY kerryhu

  # MAIL:king_819@163.com

  # BLOG:http://kerry.blog.51cto.com

  # Please manual operation yum of before Operation.....

  一、建立信任关系

  192.168.9.203 为管理机

  192.168.9.201 192.168.9.202 为远程linux服务器

  1、在管理机生成证书、

  [root@manage ~]# ssh-keygen -t rsa

  Generating public/private rsa key pair.

  Enter file in which to save the key (/root/.ssh/id_rsa):

  Enter passphrase (empty for no passphrase):

  Enter same passphrase again:

  Your identification has been saved in /root/.ssh/id_rsa. (私钥)

  Your public key has been saved in /root/.ssh/id_rsa.pub. (公钥)

  The key fingerprint is:

  36:ec:fc:db:b0:7f:81:7e:d0:1d:36:5e:29:dd:5b:a0

  2、将管理机上的公钥传送到各远程服务器

  如远程服务器更改了默认的ssh端口号,就使用scp -P 17173,17173为端口号

  [root@manage .ssh]# scp id_rsa.pub 192.168.9.201:/root/.ssh/authorized_keys

  [root@manage .ssh]# scp id_rsa.pub 192.168.9.202:/root/.ssh/authorized_keys

  管理机与远程主机信任关系建立完毕

  二、通过shell脚本批量修改远程服务器密码

  如果要调用mkpasswd就得安装expect,使用mkpasswd可以随机产生密码

  usage: mkpasswd [args] [user]

  where arguments are:

  -l # (length of password, default = 10)

  -d # (min # of digits, default = 2)

  -c # (min # of lowercase chars, default = 2)

  -C # (min # of uppercase chars, default = 2)

  -s # (min # of special chars, default = 1)

  -v (verbose, show passwd interaction)

  -p prog (program to set password, default = passwd)

  比如说你要指定一个长度为8,而且至少有三个大写字母的密码,那么可以这样输入:

  mkpasswd -l 8 - C 3,好了,密码就会按你的要求随机产生了

  yum -y install expect

  ip_list.txt为远程服务器IP列表

  [root@manage .ssh]# cat ip_list.txt

  192.168.9.201

  192.168.9.202

  如果远程服务器修改了默认ssh的端口号,就使用ssh -p 17173,17173为端口号

[Ok3w_NextPage]

  #!/bin/bash

  #============== Though ssh remote server ,auto modify ROOT passwd =============#

  for IP in `cat /root/ip_list.txt` #导入远程要修改主机的IP

  do

  #========================= 创建远程主机密码 ==========================#

  TMP_PWD=`mkpasswd -l 8 -C 3`

  R_PWD=`echo ${IP}_${TMP_PWD}`

  echo "${IP}_${TMP_PWD}" > R_PWD.txt

  #=========================== 修改远程主机密码 ========================#

  if [ $? = 0 ] ; then

  ssh $IP passwd root --stdin < R_PWD.txt

  echo -e "$(date "+%Y-%m-%d %H:%M:%S")t${IP}t${R_PWD}t" >> R_Server.log

  else

  echo -e "$(date "+%Y-%m-%d %H:%M:%S")t${IP} R_PWD.txt is create failtplease check!t" >> M_pass.log

  fi

  if [ $? = 0 ] ; then

  echo -e "$(date "+%Y-%m-%d %H:%M:%S")tThe ${IP} passwd is modify OKt" >> M_pass.log

  else

  echo -e "$(date "+%Y-%m-%d %H:%M:%S")tThe ${IP} passwd is modify failtplease check!t" >> M_pass.log

  fi

  done

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