This post describes the D-Bus interface to FirewallD and provides a number of working examples which use dbus-send to retrieve information from FirewallD and change the firewall configuration.
RHEL/CentOS 7 uses SystemD predictable network interface names. This post shows you how to rename a network interfcae to eth0,/em>without modifying the kernel commnad line or any udev rules, and without requiring a sytem reboot.
In this post, I show you how to quickly add or delete a virtual disk in a running Red Hat or CentOS guest VM, running on VMware Workstation or VMware Player, without rebooting the guest.
This post shows you how to configure a local ISO-based repository on a CentOS 7.2 VM using CentOS-7-x86_64-Everything-1511.iso
If you are preparing for the RHCSA exam, this post should be of interest to you. I provide a Bash script which will fully configure a simple OpenLDAP directory server which you can then use to test that your OpenLDAP client setup is correct.
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