CentOs Linux 6.5 was released and included hundreds of bug fixes and enhancements to the kernel. Upgrading is pretty straight forward and can be done with a few commands.
Make sure you backup any important data on the server before doing any updates. I have not personally ran into any major issues with upgrading, however, I always recommend to backup before updating.
To find out what version of CentOs you are currently using enter the following command:
You will get an output similar to this:
CentOs release 6.3 (Final)
Show list of available updates
yum clean all
yum list updates
Type the following command to update:
You will get a list will need to confirm you want to download the update packages. You need to confirm by hitting “y” and then the enter key.
You will get to another spot asking you to confirm the signing key. Again, You need to confirm by hitting “y” and then the enter key.
Once you confirm the key signing, you need to just sit back and wait a few minutes. It will start updating everything and depending on the amount of updates and server resources it could be really fast, or take a little time to update everything. Once it is completed you will see something like below.
Now you need to reboot the server with the following command:
shutdown -r now
You will see something like this:
Once the server is rebooted, type the following command to verify the current CentOs version:
You should now be running the latest release of CentOs.