How to Fix virtualenv: command not found on CentOS 6?

Recently I used to be securing one of many web sites through Let’s Encrypt and whereas operating “./letsencrypt-auto”

Checking for brand spanking new model...
Creating digital setting...
./letsencrypt-auto: line 455: virtualenv: command not discovered

It was on CentOS 6.7 hosted by DigitalOcean and that is how I solved it.

Be sure you have root privileges and run the next command.

yum set up centos-release-SCL
yum replace
yum set up scl-utils python27 python27-scldevel
scl allow python27 bash

After that I used to be capable of proceed establishing Let’s Encrypt.

Reference: https://neighborhood.letsencrypt.org/t/solved-virtualenv-command-not-found/2127/8