You may receive a problem with yum not being able to resolve hosts when you try to install a yum package.
This error generally occurs while installing Apache web server in Linux environment.
[root@localhost ~]# yum install httpd
Loaded plugins: fastestmirror, langpacks Could not retrieve mirrorlist http://mirrorlist.centos.org/?release=7&arch=x86_64&repo=os
error was 14: curl#6 - "Could not resolve host: mirrorlist.centos.org; No address associated with hostname"
This happens when the server can’t connect to the Internet because of can’t resolve to name server.
What to do next ?
Go to /etc/resolv.conf and have a look
[root@localhost ~]# vi /etc/resolv.conf
nameserver 8.8.8.8
Write “search yourdomain” at bottom, so it look something like below
nameserver 8.8.8.8
search yourdomain
Save the quit the file and try installing again.
