Linux 多台主机配置 ssh 互信脚本

互信是指配置免密登录另一台主机，常用于自动化脚本！

以下分享个互信脚本：

DEST_USER=$1
PASSWORD=$2
HOSTS_FILE=$3
if [ $# -ne 3 ]; then
echo "Usage:"
echo "$0 remoteUser remotePassword hostsFile"
exit 1
fi
if [ "${DEST_USER}" != "root" ]; then
cd /home/"${DEST_USER}"/ || return
fi

SSH_DIR=~/.ssh
SCRIPT_PREFIX=./tmp
echo ===========================
# 1. prepare  directory .ssh
mkdir $SSH_DIR
chmod 700 $SSH_DIR

# 2. generat ssh key
TMP_SCRIPT=$SCRIPT_PREFIX.sh
  {
echo "#!/usr/bin/expect"
echo "spawn ssh-keygen -b 1024 -t rsa"
echo "expect *key*"
echo "send \r"
  } >>$TMP_SCRIPT
if [ -f $SSH_DIR/id_rsa ]; then
    {
echo "expect *verwrite*"
echo "send y\r"
    } >>$TMP_SCRIPT
fi
  {
echo "expect *passphrase*"
echo "send \r"
echo "expect *again:"
echo "send \r"
echo "interact"
  } >>$TMP_SCRIPT

chmod +x $TMP_SCRIPT

  /usr/bin/expect $TMP_SCRIPT
rm -rf $TMP_SCRIPT

# 3. generat file authorized_keys
cat $SSH_DIR/id_rsa.pub >>$SSH_DIR/authorized_keys

# 4. chmod 600 for file authorized_keys
chmod 600 $SSH_DIR/authorized_keys
echo ===========================
# 5. copy all files to other hosts
for ip in $(<"${HOSTS_FILE}"); do
if [ "x$ip" != "x" ]; then
echo -------------------------
TMP_SCRIPT=${SCRIPT_PREFIX}.$ip.sh
# check known_hosts
val=$(ssh-keygen -F "${ip}")
if [ "x$val" == "x" ]; then
echo "$ip not in $SSH_DIR/known_hosts, need to add"
val=$(ssh-keyscan "${ip}" 2>/dev/null)
if [ "x$val" == "x" ]; then
echo "ssh-keyscan $ip failed!"
else
echo "${val}" >>$SSH_DIR/known_hosts
fi
fi
echo "copy $SSH_DIR to $ip"
      {
echo "#!/usr/bin/expect"
echo "spawn scp -r  $SSH_DIR $DEST_USER@$ip:~/"
echo "expect *assword*"
echo "send $PASSWORD\r"
echo "interact"
      } >"$TMP_SCRIPT"

chmod +x "$TMP_SCRIPT"

      /usr/bin/expect "$TMP_SCRIPT"
rm -rf "$TMP_SCRIPT"
echo "copy done."
fi
done

# 6. date ssh
for ip in $(<"$HOSTS_FILE"); do
if [ "x$ip" != "x" ]; then
      {
echo "#!/usr/bin/expect"
echo "spawn ssh $DEST_USER@$ip date"
echo "expect *yes*"
echo "send yes\r"
echo "interact"
      } >"$TMP_SCRIPT"

chmod +x "$TMP_SCRIPT"

      /usr/bin/expect "$TMP_SCRIPT"
rm -rf "$TMP_SCRIPT"
echo "copy done."
fi
done

创建一个脚本 ​​sshtrust.sh​​，将以上内容写入脚本！

支持多台主机进行互信，创建一个 ​​sshhostList.cfg​​ 文件，将需要配置互信的主机IP写入：

10.211.55.100
10.211.55.101
10.211.55.102

执行如下命令互信：

sh sshtrust.sh 互信用户 互信用户密码 sshhostList.cfg

执行完成后，即配置互信成功！

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本次分享到此结束啦~

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