tftp服务器离线安装

淩亂°似流年 2022-11-10 01:24 271阅读 0赞

### 获取离线安装包 ###

可以通过去网上下载tftp-server和xinetd得到rpm安装包，也可以通过已有的CentOs系统来获取。

这里使用的是通过已有CentOs系统来获取rpm包。

修改yum的配置文件`/etc/yum.conf`，内容如下

[main]
    # 缓存路径
    cachedir=/var/cache/yum/$basearch/$releasever
    # 原始值为0表示安装完后删除包，1表示下载之后不删除，这里我们将其改为1
    keepcache=1 
    debuglevel=2
    logfile=/var/log/yum.log
    exactarch=1
    obsoletes=1
    gpgcheck=1
    plugins=1
    installonly_limit=5
    bugtracker_url=http://bugs.centos.org/set_project.php?project_id=23&ref=http://bugs.centos.org/bug_report_page.php?category=yum
    distroverpkg=centos-release
    
    
    #  This is the default, if you make this bigger yum won't see if the metadata
    # is newer on the remote and so you'll "gain" the bandwidth of not having to
    # download the new metadata and "pay" for it by yum not having correct
    # information.
    #  It is esp. important, to have correct metadata, for distributions like
    # Fedora which don't keep old packages around. If you don't like this checking
    # interupting your command line usage, it's much better to have something
    # manually check the metadata once an hour (yum-updatesd will do this).
    # metadata_expire=90m
    
    # PUT YOUR REPOS HERE OR IN separate files named file.repo
    # in /etc/yum.repos.d

重新加载yum

yum clean all
    
    yum makecache

然后通过yum去下载tftp-server和xinted，下载完成之后在系统的对应目录就可以找到rpm包了，以我的系统为例子，我是CentOs7 X86的，因此我的目录就是`/var/cache/yum/x86_64/7/base/packages`，进入到该目录就可以看到对应的rpm包了

yum install -y tftp-server
    
    yum install -y xinted

### 安装tptp-server ###

将已经获取到的rpm包，取出放到需要离线安装的服务器，进行离线安装

yum localinstall -y tftp-server
    
    yum localinstall -y xinetd

安装好之后，配置xinetd的开机自启动

systemctl enable xinetd.service

覆盖或修改tftp的配置文件`/etc/xinetd.d/tftp`，内容如下

# default: off
    # description: The tftp server serves files using the trivial file transfer \
    # protocol. The tftp protocol is often used to boot diskless \
    # workstations, download configuration files to network-aware printers, \
    # and to start the installation process for some operating systems.
    
    # disable 控制tftp服务器的关闭和启动，默认值为“yes”，即关闭tftp服务器，这里修改为“no”，即开启tftp服务器
    # server_args tftp文件夹
    
    service tftp
    { 
            socket_type             = dgram
            protocol                = udp
            wait                    = yes
            user                    = root
            server                  = /usr/sbin/in.tftpd
            server_args             = -s /home/data/tftp_data -c
            disable                 = no
            per_source              = 11
            cps                     = 100 2
            flags                   = IPv4
    }

重启xinetd是之生效

systemctl restart xinetd.service

设置SeLinux为permissive模式

setenforce 0

可以使用`getenforce`命令查看SeLinux状态；并替换配置文件 `/etc/sysconfig/selinux`使其重启之后依旧生效，配置文件内容如下

# This file controls the state of SELinux on the system.
    # SELINUX= can take one of these three values:
    # enforcing - SELinux security policy is enforced.
    # permissive - SELinux prints warnings instead of enforcing.
    # disabled - No SELinux policy is loaded.
    SELINUX=permissive
    # SELINUXTYPE= can take one of three two values:
    # targeted - Targeted processes are protected,
    # minimum - Modification of targeted policy. Only selected processes are protected. 
    # mls - Multi Level Security protection.
    SELINUXTYPE=targeted