Our objective is to ensure that updating the operating system will run smoothly and without errors.
Operating System and Software Versions
- Operating system: Red Hat Enterprise Linux 6+
Privileged access to the systems
- # – requires given linux commands to be executed with root privileges either directly as a root user or by use of
- $ – given linux commands to be executed as a regular non-privileged user
Keeping the system up to date is an every day task for a sysadmin, as well as a desktop user. By applying the latest (stable) available software on the system we can take advantage of the latest features, and will be more protected from security issues and hopefully suffer less from bugs. To update the system you will need configured
yum repositories that act as the source of the updated software.
If you sit next to the machine that is running the operating system to be updated, you can easily act if something goes wrong during update, like checking the output on the terminal, or boot to a live system if the upgraded one does not return from reboot – but this is not always the case. Think of a datacenter with hundreds or thousands of (virtual) machines, or simply a physical PC that you have to upgrade remotely.
There are simple steps we can perform to prepare the system for upgrade, and possibly clear any problem that would endanger a successful update.