I am trying to install python-pip on CentOS 7 minimal server. However, I got the error No package python-pip available. Below is the complete error message. # yum install python-pip Loaded plugins: fastestmirror Loading mirror speeds from cached hostfile * base: mirrors.vhost.vn * centos-ceph-nautilus: mirrors.vhost.vn * centos-nfs-ganesha28: mirrors.vhost.vn * centos-qemu-ev:…

As part of OpenStack Yoga release, installed and configured noVNC – a VNC client library based on JavaScript. Essentially, noVNC allows the web browser to act as a VNC client to remotely access a machine. When tried to access the virtual machine console using the console url through browser it…

I was given a task to install OpenStack Yoga release on CentOS Stream 8 Server (minimal Server). I followed the Server World guide for the installation. While installing Keystone using the below command, encountered the error “Unknown repo epel“. # dnf –enablerepo=centos-openstack-yoga,epel,powertools -y install openstack-keystone python3-openstackclient httpd mod_ssl python3-mod_wsgi python3-oauth2client…

After the successful installation of OpenStack Glance, connecting to the Glance API (on port 9292) fails with an error message “failed to contact the endpoint at https://controller.tg.com:9292 for discovery. Fallback to using that endpoint as the base url“. Below is the complete error message: Failed to contact the endpoint at…

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: ‘crb’ Solution: CRB is known as  CodeReady Linux Builder. However, it is trademarked, and as such, available only in CentOS which has a different name – PowerTools. The PowerTools repository…

While installing the OpenStack Yoga release, after the yum repository setup from the server-world guide, RabbitMQ server installation error showed up as below: [root@controller ~]# dnf -y install rabbitmq-server memcached nginx-mod-stream Last metadata expiration check: 0:00:34 ago on Mon 14 Nov 2022 10:25:26 AM IST. Error: Problem: package erlang-lager-3.8.0-2.el8.noarch requires…

In recent times, on Firefox v102.3.0esr (64-bit) encountered trouble in viewing GMAIL and few other SSL enabled websites with the error message  SSL ERROR HANDSHAKE UNEXPECTED ALERT. However, the same is working fine on Chrome browser. I tried disabling, Anti-Virus, cleared browser cache, etc., but all in VAIN! Secure Connection…

I’m experiencing a Windows10 VM on OpenStack that automatically restarts on successful autologon. Struggling with this for a while and hours spent in search of this topic on google went in vain. Followed the below step-by-step procedure to find the root cause and stop Windows10 VM on OpenStack from automatically…

Recently I created a windows image using QEMU-KVM and ported it onto OpenStack for one of my clients. While creating the windows image I had set the virtual disk size as 40GB. However, the client requested an additional virtual disk of 10GB. In this article, we shall learn how to…

Before we proceed, please read Why does Windows 10 VM show 100% CPU utilization always on QEMU-KVM? The same issue holds for Windows10 VM on OpenStack making it slow and using 100% CPU utilization always. This article shows how to configure OpenStack to run Windows10 VM on a multicore processor utilizing…

You might have read my article on How to Create Windows image for OpenStack and its related articles such as fixing Windows could not parse or process the unattended answer file for Pass Specialize, and How to configure Windows VM Autologin for OpenStack Cloud. To add to the series, here…

I used WebSockify in my web application to connect to the VNC server using noVNC to enable remote access to Linux servers via the browser. It was an easy implementation as there was no firewall involved and the WebSocket port was opened. However, recently I had to migrate to another…

I installed owncloud with all the necessary pre-requisites and when tried to access over the browser encountered error: Cannot write into “Config” directory! Below is the complete error list. How to fix Cannot write into “Config” directory! [OwnCloud] The error above clearly conveys that, the webserver is unable to write…

Earlier I had written an article on How to start GUI on CentOS 8. After this article was read by one of my readers, he asked me to write a similar article for Ubuntu. Typically any Linux servers (CentOS or Ubuntu) don’t provide Graphical User Interface (GUI) as it adds…

Typically Linux servers don’t provide Graphical User Interface (GUI) as it adds up in RAM & CPU usage. Administrators prefer the command line over GUI to manage the Servers. This article explains how to start GUI on CentOS 8. The same procedure holds good to start GUI on AlmaLinux 8…

While I was trying to install GitLab on CentOS 8, encountered the below error: Unable to find a match: policycoreutils-python. Below is the snapshot of the error. This article will help you to fix the error: Unable to find a match: policycoreutils-python. [root@centos8 ~]# yum install -y curl policycoreutils-python openssh-server…

Earlier I had written How to Create Windows Image for OpenStack. Now that, we have created the Windows image, we can create instances, however, to access it, we need to manually provide the username and password for every bootup. This article, helps you to configure Windows VM Autologin, making the…

After successfully creating Windows Image for OpenStack, uploaded the Windows 10 QCOW2 image on my OpenStack setup and created an Instance to load Windows 10 image. However, after waiting for a long time (nearly hours) still, the windows loading screen didn’t complete and suspected about the image. Cameback to KVM…

I was assigned a task to create Windows image for OpenStack unlike most Linux distros, it is not possible to download generic qcow2 images, we can’t find any for Windows images on the internet. This guide shall provide in detailed explanation for creating a Windows qcow2 image to be used…