A collection of tutorials pertaining to system administration functions of linux servers and environments.
mod_auth_token is a apache module that can be used to sign URLs, using this it can create time based urls that expire after a certain amount of time. It will prevent hot linking as the URLs will expire. This is particularly useful with video and image sharing. To get started you will need to have […]
Compiling Apache 2.4 from source is easy and allows for more customization later on. It also allows for control over where it is installed Install some required depedencies: yum install -y wget pcre-devel openssl openssl-devel expat-devel First get the latest version, at the time of writing this it is 2.4.25. The link to download the […]
Virsh is a command line executable to control existing virtual machines. It includes a number of commands to help manage KVM(kernel-based virtual machine) instances. It allows for easy command line management often remotely of virtual machines through SSH access. To enter the command shell over ssh just type the following: virsh From there you can type […]
journalctl was added into the systemd release of CentOS 7 and has been part of Fedora since 17. It is a logging system for querying and printing messages form the journal. It can be used in with or replacing older logging services like rsyslogd. Journalct also uses highlighting for high priority messages in red and […]