Firewalld on RHEL7

Getting Started With Firewalld on RHEL7 and CentOS 7

Firewalld on RHEL7: I’m a person who is nuts about security. Seeing multiple layers of security being circumvented on a network is just against the reasons I’m security-centric all times. Some...

Openstack Error Qemu-img: Could not open ‘/var/lib/libvirt/images/’ Permission Denied

Have you ever receive error message like below while working with Openstack and KVM?. If so, a fix is given here. Command: env LC_ALL=C LANG=C qemu-img info /var/lib/libvirt/images/asterisk.qcow2 Exit code: 1 Stdout: u'' Stderr: u"qemu-img:...

Openstack Liberty NoFloatingIpInterface: Interface eno16777736 Not Found.

Lately, i have been trying to deploy a single node openstack infrastructure on a centos OS host running on bare metal partition of my small server and got several interesting errors...