![amazon web services - Not able to update EC2 Linux instance with command 'sudo yum update' - Stack Overflow amazon web services - Not able to update EC2 Linux instance with command 'sudo yum update' - Stack Overflow](https://i.stack.imgur.com/jdLl0.png)
amazon web services - Not able to update EC2 Linux instance with command 'sudo yum update' - Stack Overflow
![yum update' Failed with an error message "Couldn't resolve host' on Centos - Here's a Fix - Techglimpse yum update' Failed with an error message "Couldn't resolve host' on Centos - Here's a Fix - Techglimpse](http://techglimpse.com/wp-content/uploads/2015/02/questions.jpg)
yum update' Failed with an error message "Couldn't resolve host' on Centos - Here's a Fix - Techglimpse
![HOW TO FIX CENTOS 6 ERROR: YUMREPO ERROR: ALL MIRROR URLS ARE NOT USING FTP, HTTP[S] OR FILE - SystemPandit HOW TO FIX CENTOS 6 ERROR: YUMREPO ERROR: ALL MIRROR URLS ARE NOT USING FTP, HTTP[S] OR FILE - SystemPandit](https://i1.wp.com/arstech.net/wp-content/uploads/2020/12/CentOS-6-YumRepo-Error.jpg?resize=640%2C145&ssl=1)
HOW TO FIX CENTOS 6 ERROR: YUMREPO ERROR: ALL MIRROR URLS ARE NOT USING FTP, HTTP[S] OR FILE - SystemPandit
![How to fix CentOS 6 : YumRepo Error: All mirror URLs are not using ftp, http[s] or file. - Bilgi Bankası - Host4Fun.com How to fix CentOS 6 : YumRepo Error: All mirror URLs are not using ftp, http[s] or file. - Bilgi Bankası - Host4Fun.com](https://i.imgur.com/yF3lIwW.png)