How to install Node.js on Linux CentOS from the EPEL Repository?
An alternative installation method uses the EPEL (Extra Packages for Enterprise Linux) repository that is available for CentOS and related distributions.
To gain access to the EPEL repo, you must modify the repo-list of your installation. Fortunately, we can reconfigure access to this repository by installing a package available in our current repos called epel-release.
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Now that you have access to the EPEL repository, you can install Node.js using your regular yum commands:
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Once again, you can check that the installation was successful by asking Node to return its version number:
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Tested on CentOS 6.7 x64
Source: DigitalOcean