RabbitMQ-错误：Failed to download metadata for repo ‘base‘: Cannot download repomd.xml

合集 - 报错(63)

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37.RabbitMQ-错误：Failed to download metadata for repo ‘base‘: Cannot download repomd.xml2022-04-17

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收起

1、遇到的问题

错误：

Failed to download metadata for repo ‘base‘: Cannot download repomd.xml

2、解决办法

CentOS更改yum源与更新系统
查看系统信息

cat  /etc/redhat-release

根据项目系统版本设置更新源继续更新

wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-8.repo

centos最初的dns

# Generated by NetworkManager
nameserver 114.114.114.114
nameserver 100.100.2.138

centos配置DNS地址
1.先查看一下自己是否有DNS地址

cat /etc/resolv.conf

文件为空，则是没有配置DNS地址，或者使用nslookup命令解析一下网址。

nslookup www.baidu.com

2.配置DNS地址，编辑resolv.conf文件，此文件只能使用root权限编辑，非root权限无法保存。
sudo vi /etc/resolv.conf

3.按esc到命令输入模式，输入:wq保存，再次使用nslookup测试一下，dns是否可用。
如果还是无法使用
可能是你resolv.conf 配置好了然后重启network之后失效了，

1. 先改/etc/resolv.conf，# vim /etc/resolv.conf

、

nameservre 8.8.8.8
nameservre 8.8.4.4

2. 再改etc/sysconfig/network-scripts/ifcfg-eth0 文件中的#NM_CONTROLLED=no，
3. 然后停止 NetworkManager 服务，

 # service NetworkManager status
 # chkconfig NetworkManager off

4. 重启 # service network restart
5. 就可以ping 一下外部地址试试，能行的话说明可以访问