编写kickstart脚本,执行时遇到的问题

#!/bin/bash

#declare var
yum_ins="yum -y install"
sys_res="systemctl restart"

#1.配置dhcp
dhcp_cfg() {
    #declare dhcp_var
    dhcp_path="/etc/dhcp"
    dhcp_conf=$dhcp_path/dhcpd.conf
    # 网段
    net_seg="192.168.152.0"
    # 子网掩码
    net_mask="255.255.255.0"
    #地址池
    ran="192.168.152.201 192.168.152.204"
    # 网关
    op_router="192.168.152.2"
    # tftp主机
    next_ser="192.168.152.200"

    $yum_ins dhcp
    #解决cp覆盖时强制询问
    rm -rf $dhcp_conf
    cp /usr/share/doc/dhcp-4.2.5/dhcpd.conf.example $dhcp_conf
    #去除注释和空行
    sed -i "/^$/d;/^#/d" $dhcp_conf
    #将内容存入中转文件
    cat $dhcp_conf | awk 'NR<6{print $0}' >$dhcp_path/transfer
    #将中转内容转回并删除
    cat $dhcp_path/transfer >$dhcp_conf
    rm -rf $dhcp_path/transfer
    #配置dhcpd.conf文件
    cat >>$dhcp_conf <<EOF
subnet $net_seg netmask $net_mask {
range $ran;
option routers $op_router;
next-server $next_ser;
filename "pxelinux.0";
}
EOF
    #重启dhcp
    if $sys_res dhcpd &>/dev/null; then
        echo "dhcp启动完成"
    else
        echo "dhcp启动失败"
        exit 1
    fi

}

#2.配置tftp
tftp_cfg() {
    $yum_ins tftp-server xinetd lsof
    sed -i.bak '14s/yes/no/' /etc/xinetd.d/tftp
    $sys_res xinetd
    echo "配置tftp完成"
}

#3.配置syslinux
sys_kick() {

    #路径
    pxe_path="/var/lib/tftpboot"
    pxe_cfg="$pxe_path/pxelinux.cfg"
    pxe_def="$pxe_cfg/default"

    $yum_ins syslinux system-config-kickstart
    mkdir $pxe_cfg
    cp /usr/share/syslinux/pxelinux.0 $pxe_path
    cp /mnt/cdrom/images/pxeboot/* $pxe_path
    cp /mnt/cdrom/isolinux/isolinux.cfg $pxe_def
    sed -i '1s/vesamenu.c32/linux/' $pxe_def
    sed -i '64a\  append initrd=initrd.img inst.repo=ftp://192.168.152.200/pub inst.ks=ftp://192.168.152.200/ks.cfg' $pxe_def
    sed -i '64d' $pxe_def

    echo "配置syslinux完成"
}

#4.安装vsftpd
ins_ftp() {
    if $yum_ins vsftpd &>/dev/null; then
        if $sys_res vsftpd &>/dev/null; then
            echo "安装vsftpd完成"
        else
            echo "重启vsftpd失败"
            exit 1
        fi
    else
        echo "安装vsftp失败"
        exit 1
    fi
}

#5.准备执行Kickstart
use_kick() {
    mount /dev/sr0 /var/ftp/pub/
    echo "之前就将yum仓库命名为development",此处无需更改
    cat <<EOF >/etc/yum.repos.d/development.repo
[development]
name=origin
baseurl=file:///mnt/cdrom
enabled=1
gpgcheck=0
EOF
    yum clean all
    yum repolist
    echo "配置development yum仓库完成"
    #安装图形化
    $yum_ins xorg-x11-xauth
    #安装语言包
    yum -y groupinstall "fonts"
    echo "kickstart最后准备完成"
}

#执行Kickstart
echo "1.开始配置dhcp"
dhcp_cfg
echo "2.开始配置tftp"
tftp_cfg
echo "3.开始配置syslinux"
sys_kick
echo "4.安装vsftpd"
ins_ftp
echo "5.执行kickstart"
use_kick
echo "final: 开始kickstart"

echo "接下来需要重连xshell"
echo "通过system-config-kickstart命令进入配置图形化界面"