Linux System Administration 28

Tutorials, tricks and tips for linux system administration, management, troubleshooting security and devops.
 

KVM installation on CentOS

KVM(Kernel-based Virtual Machine) is a full virtualization software for linux. You can run multiple virtual server instances under one physical host. This allows you to seperate services and run them on different virtual machines.  The link to the project can be found here. Running virtual servers is often used to condense many physical machines into […]

2 years ago More
 

using inotify-tools to trigger events

What are Inotify-tools? Inotify-tools is a C libary that interface with the inotify kernel function. Inotify-tools are available on kernels later than 2.6.13.  These tools can monitor or act based on file system events, this is particularly useful for scripting out actions you would like to happen if an event takes place. Install on Fedora […]

2 years ago More
 

Journalctl Introduction and Examples

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 […]

2 years ago More