CentOS中yum安装软件时报错:No package XXX available
时间:2016-04-18 18:38:06
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yum 安装软件时,报错:No package XXX available.
[root@localhost ~]# yum -y install redis Loaded plugins: fastestmirror No package redis available. Nothing to do
配置一台CentOS 7.x或RHEL 7.x的系统使用Fedora EPEL repos和第三方软件包安装各种软件包。请注意,这些软件包没有正式获得任何的CentOS或Red Hat的支持,但提供了许多流行的包和应用程序。
显示以上错误,有以下2种原因:
1、dns问题;
2、镜像连接错误;
DNS问题
首先测试下网络连接,如果ping不通,需要设置下DNS。
[root@localhost ~]# ping www.baidu.com XXXXXXXXXXXXXXXXX [root@localhost ~]# echo "nameserver 8.8.8.8">>/etc/resolv.conf
再次ping即可ping通了。
镜像连接错误问题
具体原因:使用yum搜索某些rpm包,找不到包是因为CentOS是RedHat企业版编译过来的,去掉了所有关于版权问题的东西。安装EPEL后可以很好的解决这个问题。EPEL(Extra Packages for Enterprise Linux )即企业版Linux的扩展包,提供了很多可共Centos使用的组件,安装完这个以后基本常用的rpm都可以找到。
Method #1 » 从企业版Linux库配置包中安装扩展包。(推荐 )
[root@localhost ~]# sudo yum install epel-release Loaded plugins: fastestmirror, langpacks Loading mirror speeds from cached hostfile Resolving Dependencies --> Running transaction check ---> Package epel-release.noarch 0:7-5 will be installed --> Finished Dependency Resolution Dependencies Resolved ================================================================================ Package Arch Version Repository Size ================================================================================ Installing: epel-release noarch 7-5 extras 14 k Transaction Summary ================================================================================ Install 1 Package Total download size: 14 k Installed size: 24 k Is this ok [y/d/N]: y Downloading packages: epel-release-7-5.noarch.rpm | 14 kB 00:01 Running transaction check Running transaction test Transaction test succeeded Running transaction Installing : epel-release-7-5.noarch 1/1 Verifying : epel-release-7-5.noarch 1/1 Installed: epel-release.noarch 0:7-5 Complete!
Method #2 » 从dl.fedoraproject.org安装扩展包。
1.使用wget命令下载epel-release:
[root@localhost ~]# cd/tmp [root@localhost ~]# wget https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm ls*.rpm
或者通过wiki查找到对应版本的epel后,再下载:
[root@localhost ~]# wget http://dl.fedoraproject.org/pub/epel/7/x86_64/epel-release-7-5.noarch.rpm 或 [root@localhost ~]# wget http://mirrors.ustc.edu.cn/fedora/epel/7/x86_64/epel-release-7-5.noarch.rpm //中国科学技术大学镜像
2.安装:
[root@localhost ~]# sudo yum install epel-release-7.noarch.rpm
注意:
1. epel的版本要与centos的版本相对应,否则安装失败,即centos7版本要对应epel7版本。
2. rpm安装完后,rpm -ql epel*,确提示未安装,此时要导入rpm的签名信息
#rpm --import /etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-6 (root身份执行)
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