centos7使用yum安装显示被另一个程序占用

网络的问题。显示被另一个程序占用多数是网络连接异常导致。

1、首先打开电脑检查网络。

2、其次打开centos7软件进行测试网络连接是否异常。

3、最后点击重新连接网络后重新登录该软件即可。

我试过了很多方法，有：1、修改DNS配置。我的DNS没有问题，加上了namesever 8.8.8.8后仍然不行。2、更换yum源。我更换了163的yum源和sohu的yum源，仍然无法解决问题。3、修改/etc/yum.repos.d/CentOS-Base.repo中的gpgcheck=1为gpgcheck=1，不起作用。4、将yum卸载（yum remove yum），重新下载yum安装包进行安装，还是出现一样的错误提示。现将yum的配置贴出来：/etc/yum.conf[main]cachedir=/var/cache/yum/$basearch/$releaseverkeepcache=0debuglevel=2logfile=/var/log/yum.logexactarch=1obsoletes=1gpgcheck=1plugins=1installonly_limit=5bugtracker_url=http://bugs.centos.org/set_project.php?project_id=16&ref=http://bugs.centos.org/bug_report_page.php?category=yumdistroverpkg=centos-releaseyum源：/etc/yum.repos.d/CentOS-Base.repo:[base]name=CentOS-$releasever - Basemirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=os#baseurl=http://mirror.centos.org/centos/$releasever/os/$basearch/gpgcheck=1gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-6#released updates [updates]name=CentOS-$releasever - Updatesmirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=updates#baseurl=http://mirror.centos.org/centos/$releasever/updates/$basearch/gpgcheck=1gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-6#additional packages that may be useful[extras]name=CentOS-$releasever - Extrasmirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=extras#baseurl=http://mirror.centos.org/centos/$releasever/extras/$basearch/gpgcheck=1gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-6#additional packages that extend functionality of existing packages[centosplus]name=CentOS-$releasever - Plusmirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=centosplus#baseurl=http://mirror.centos.org/centos/$releasever/centosplus/$basearch/gpgcheck=1enabled=0gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-6#contrib - packages by Centos Users[contrib]name=CentOS-$releasever - Contribmirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=contrib#baseurl=http://mirror.centos.org/centos/$releasever/contrib/$basearch/gpgcheck=1enabled=0gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-6希望能给予帮助

我记得上次把yum这个工具误删了，公司的服务器也是云服务器，都是通过网络安装软件的，后来不能安装软件，坑爹啊，不过不用急，你可以先查看你的系统版本号，根据系统的版本号，在网上下载关于yum的rpm软件包，然后安装，好像有三个软件，软件名我忘记了，在百度上搜下软件的名称，先在同版本虚拟机上试下

祝你好运

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