Category: CentOS 7

How to Fix yum Could not resolve host: repo Unknown error

You may receive a problem with yum not being able to resolve hosts when you try to install a yum package. I’m using CentOS 7. yum install wget

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Downloading packages:
Delta RPMs disabled because /usr/bin/applydeltarpm not installed.
wget-1.14-10.el7_0.1.x86_64.rp FAILED
http://repo.dimenoc.com/pub/centos/7.1.1503/os/x86_64/Packages/wget-1.14-10.el7_0.1.x86_64.rpm: [Errno 14] curl#6 - "Could not resolve host: repo.dimenoc.com; Unknown error"
Trying other mirror.

If you already have Internet connection and can ping 8.8.8.8, the likely problem is that you don’t have nameservers in your /etc/resolv.conf. vi /etc/resolv.conf If /etc/resolv.conf does not have any nameservers, you can add this line somewhere in the file: nameserver 8.8.8.8 Note: if you have used dhclient command, you should...

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How to Set Static IP Address on CentOS 7

This blog post will show you how to set a static IP address on CentOS 7 from scratch with no prior knowledge of any information about the network. See if NetworkManager is running. NetworkManager is a network daemon that handles our network interfaces dynamically, but we’ll change our network scripts to set static configurations. We should stop this service. systemctl status NetworkManager systemctl stop NetworkManager Check what interfaces are available. nmcli d

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DEVICE    TYPE      STATE        CONNECTION
enp30s0   ethernet  unavailable  --
enp31s0   ethernet  unavailable  --
lo        loopback  unmanaged    --

Connect your Ethernet cable into the computer.  ...

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How to Install CentOS 7 Minimal Without a Mouse on Troubleshooting Basic Graphics Mode

Here are the list of steps to install CentOS 7 minimal without a mouse on a node or computer with no apparent graphics card. Why do we have to use troubleshooting mode? Without the graphics card, the node or machine tends to freeze at setup because there is no graphics card to render the setup properly, so we have to use troubleshooting mode and take advantage of installing CentOS 7 in basic graphics mode.   Steps First, follow Create Bootable USB...

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How to Create Bootable USB Flash Drive of CentOS 7 Minimal ISO

This article will provide the step to step instructions to create a bootable USB flash drive of CentOS 7 Minimal ISO on Windows, Mac, or Linux. The CentOS instance that we will install onto the bootable USB flash drive is CentOS-7-x86_64-Minimal-1503-01.iso.   Requirements Windows: You will need to use a program like Cygwin. I have another blog post, teaching how to install Cygwin on Windows machines. Macs and Linux: Your terminal will have the command already as a part of the...

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