如何在ssh中禁用严格的主机密钥检查？

#1 楼

Host *
    StrictHostKeyChecking no

#2 楼

ssh -o StrictHostKeyChecking=no yourHardenedHost.com

#3 楼

#4 楼

alias cssh='ssh -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null'

#5 楼

ssh -o UserKnownHostsFile=/dev/null

#6 楼

NoHostAuthenticationForLocalhost yes

#7 楼

 #!/bin/bash
# WF 2017-08-25
# check ssh access to bitplan servers

#ansi colors
#http://www.csc.uvic.ca/~sae/seng265/fall04/tips/s265s047-tips/bash-using-colors.html
blue='3[0;34m'  
red='3[0;31m'  
green='3[0;32m' # '\e[1;32m' is too bright for white bg.
endColor='3[0m'

#
# a colored message 
#   params:
#     1: l_color - the color of the message
#     2: l_msg - the message to display
#
color_msg() {
  local l_color=""
  local l_msg=""
  echo -e "${l_color}$l_msg${endColor}"
}

#
# error
#
#   show an error message and exit
#
#   params:
#     1: l_msg - the message to display
error() {
  local l_msg=""
  # use ansi red for error
  color_msg $red "Error: $l_msg" 1>&2
  exit 1
}

#
# show the usage
#
usage() {
  echo "usage: q4312079q domain sites"
  exit 1 
}

#
# check the given server
#
checkserver() {
  local l_server=""
  grep $l_server $sconfig > /dev/null
  if [ $? -eq 1 ]
  then
    color_msg $blue "adding $l_server to $sconfig"
    today=$(date "+%Y-%m-%d")
    echo "# added $today by q4312079q"  >> $sconfig
    echo "Host $l_server" >> $sconfig
    echo "   StrictHostKeyChecking no" >> $sconfig
    echo "   userKnownHostsFile=/dev/null" >> $sconfig
    echo "" >> $sconfig
  else
    color_msg $green "$l_server found in $sconfig"
  fi
  ssh -q $l_server id > /dev/null
  if [ $? -eq 0 ]
  then
    color_msg $green "$l_server accessible via ssh"
  else
    color_msg $red "ssh to $l_server failed" 
    color_msg $blue "shall I ssh-copy-id credentials to $l_server?"
    read answer
    case $answer in
      y|yes) ssh-copy-id $l_server
    esac
  fi
}

#
# check all servers
#
checkservers() {
me=$(hostname -f)
for server in $(echo $* | sort)
do
  os=`uname`
  case $os in
   # Mac OS X
   Darwin*)
     pingoption=" -t1";;
    *) ;;
  esac

  pingresult=$(ping $pingoption -i0.2 -c1 $server)
  echo $pingresult | grep 100 > /dev/null
  if [ $? -eq 1 ]
  then 
    checkserver $server
    checkserver $server.$domain
  else
    color_msg $red "ping to $server failed"
  fi
done
}

#
# check configuration
#
checkconfig() {
#https://askubuntu.com/questions/87449/how-to-disable-strict-host-key-checking-in-ssh
  if [ -f $sconfig ]
  then
    color_msg $green "$sconfig exists"
    ls -l $sconfig
  fi
}

sconfig=~/.ssh/config

case  $# in
  0) usage ;;
  1) usage ;;
  *) 
    domain= 
    shift 
    color_msg $blue "checking ssh configuration for domain $domain sites $*"
    checkconfig
    checkservers $* 
    ;;
esac