A Simple Guide to Install OpenStack Icehouse on CentOS – Two node Architecture The word “OpenStack” is quite popular these days. You might have heard this word, even if you are not working in...
OpenStack Icehouse Installation Errors and Solutions – CentOS I have been trying to install OpenStack Icehouse on CentOS for almost a week (Since I’m doing this for the...
List of Common Errors (and Solutions) while Installing and Configuring OpenStack Nova Service In continuation to my previous articles on OpenStack Errors and Solutions for installation and configuration of KeyStone and Glance, today...
List of Most Common Errors (and Solutions) While Installing OpenStack Image Service GLANCE I was recently installing OpenStack Icehouse for one of my project by following the official documentation from openstack.org. During the installation of...
How to Fix OpenStack’s Keystone Authentication Error – HTTP 500? Here’s a question from one of our reader Praveen. Question: I’m installing Openstack on a CentOS machine by following the online documentation...
How to shrink a qcow2 Windows VM image on Linux Followed your article to create a Windows Image for OpenStack glance repository. After successfully booting of VM, found the size...
Too many connections for neutron-db-manage [MySQL] While finalizing the installation of neutron on controller node, the operation to populate the database failed with Too many connections...
[CentOS Stream 8]: Error: Unknown repo epel [Solved] I was given a task to install OpenStack Yoga release on CentOS Stream 8 Server (minimal Server). I followed the...
[CentOS Stream 8]: Unknown repo crb : [Solved] While executing the below command, encountered the error “Unknown repo crb“. # dnf --enablerepo=centos-openstack-yoga,epel,crb -y install openstack-glance Error: Unknown repo:...
Increase virtual disk size of Windows10 VM on QEMU-KVM Recently I created a windows image using QEMU-KVM and ported it onto OpenStack for one of my clients. While creating...
Why does Windows 10 VM shows 100% CPU utilization always on QEMU-KVM? You might have read my article on How to Create Windows image for OpenStack and its related articles such as...
How to fix Windows could not parse or process the unattend answer file for Pass Specialize After successfully creating Windows Image for OpenStack, uploaded the Windows 10 QCOW2 image on my OpenStack setup and created an...
“firewall-cmd: command not found” on CentOS 8 [Solved] Recently I started a CentOS 8 VM on my OpenStack setup. When trying to configure firewall rules using firewall-cmd, encountered...
ImportError: No module named MySQLdb [Solved] Question: My Python script failed with an error message “ImportError: No module named MySQLdb” while performing MySQL operation. Here’s the complete...
How to Fix “nova.compute.manager Stderr: u”qemu-img: Could not open” All of a sudden, the Hypervisor Summary page in Horizon dashboard was not updating the usage stats of vCPUs, RAM...
Error in Sudoers file? Here’s how you can fix it. It’s quite common for an administrator to edit sudoers file and allow users to execute administrative commands. But what if...
How to Install and Configure Puppet 4 on CentOS and Ubuntu? [Master and Agent] Puppet, a popularly known configuration management tool for Unix and Windows based systems that allows an administrator to easily automate...
How to Fix Package installation error – Unable to correct problems, you have held broken packages Question: I was installing few OpenStack packages on Ubuntu 14.04.4 LTS and landed up with an error Unable to correct...
What is Docker, Difference between Docker and VM, Installation of Docker and its usage Previously we have seen the installations of hypervisors like Xen and cloud middleware like openstack. Recently a new technology called...