Summary Not everyone wants their server to be managed by SystemD. The reasons why range from being too different to not being a mature enough solution. I don’t mind running it, but if you are one of those individuals that wish not to use it, Ubuntu allows you to boot into Upstart or, if you […]
Overview It’s not difficult to argue that using RSA key pairs rather than passwords is more secure when using SSH. Where it can get complicated is when you’re dealing with infrastructure on different networks, such as having one on your local LAN and another in the cloud. For security or political reasons, you may want […]
Learn how to deploy a Puppet Master server on CentOS 6.X using the free open-source release, and automate system configuration management in your infrastructure.
Overview It happens to the best of us. The root password for a particular server isn’t known, there are no other admin accounts available, and you need immediate access to the server. It may have been the result of a previous employee not documenting it or maybe it was lost. Either way, it needs to […]
Learn how to work with SELinux instead of disabling it and creating an insecure server. Use SETroubleshoot to identify why something is being blocked.
Red Hat Enterprise Linux 7 brings a lot of much needed change to the operating system, including its installation process.
Not every server is connected to the Internet and sometimes you need a local repository to install from. Learn how to install packages from an ISO by using it as a Yum repository.
Learn how simple it is to change the hostname of a CentOS server, either temporarily or permanently. And understand why someone would want a temporary change.
Logical volume snapshots allow you to make system changes that can be easily rolled back, if needed. Learn how to use them in your CentOS or Red Hat environment.