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  • rsh配置双方主机免密

    rsh的安全性是没有保证的,所有密码均使用明文传输,如果服务器有大量对外服务,建议不要使用此协议

    我们在使用CentOS系统时候,安装RAC时,需要配置各个节点的互信关系,使rsh、rlogin、rcp等命令不需要输入密码可以操作其他节点。

     PS:以下步骤两台机器都是需要操作

    前置条件:

    关闭防火墙

    关闭selinux

    1、首先在两台机器上安装需要的软件包:

    yum -y install rsh  rsh-server  xinetd  

    2、配置/etc/hosts解析:

    主机ip     主机名

     

    3、编辑文件/etc/hosts.equiv

    把两台的主机名写入进去,一个主机名占一行

    4、在用户的家目录下面编辑.rhosts文件

    vim .rhosts

    把两台主机名写进去,各占一行

     

     权限必须是600

     chmod   600   .rhosts

    5、编辑/etc/securetty在文本里面追加三行:

    echo rsh >>/etc/securetty

    echo rlogin >>/etc/securetty

    echo rexec >>/etc/securetty

    6、在/etc/xinetd.d/目录下,添加两个文件配置如下:

    cat /etc/xinetd.d/rsh
    # default: on
    # # # description: The rshd server is the server for the rcmd(3) routine and,
    # # # consequently, for the rsh(1) program. The server provides
    # # # remote execution facilities with authentication based on
    # # # privileged port numbers from trusted hosts.  service shell
    service shell
    {
    disable = no
    socket_type = stream
    wait = no
    user = root
    log_on_success += USERID
    log_on_failure += USERID
    server = /usr/sbin/in.rshd
    }

    cat /etc/xinetd.d/rlogin
    # default: on
    # # description: rlogind is the server for the rlogin(1) program. The server
    # # provides a remote login facility with authentication based on
    # # privileged port numbers from trusted hosts.  service login
    service login
    {
    disable = no
    socket_type = stream
    wait = no
    user = root
    log_on_success += USERID
    log_on_failure += USERID
    server = /usr/sbin/in.rlogind
    }

    7、重启xinetd服务:

    systemctl restart xinetd.service

    8、查询514端口是否正在监听:

    netstat -an | grep 514

    tcp6   0   0    :::514                    :::*                     LISTEN

    9、测试是否可以无密码访问:

    rsh  主机名

    少年笔尖纯文字,夏末微凉纯薄衫
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  • 原文地址:https://www.cnblogs.com/litengfeideboke/p/11720303.html
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