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  • 7 min read

Repairing pod communication problems with the join network

While converting a production region to Kube-OVN managed by Helm chart from its original kubespray installation as detailed in the Genestack doc docs/k8s-cni-kube-ovn-helm-conversion.md, we encountered an issue with some of the kube-ovn-cni pods when they restarted with an inability to communicate with the join network, and crash looping or pending pod states. We found that a reboot of the pod's node generally solved this problem, but also discovered a method that could repair connectivity with the join network without rebooting the node.

VMware to OpenStack Migration using virt-v2v

This document describes the path to migrate a virtual machine from VMware to OpenStack using virt-v2v vpx. You should use vddk plugins to make this process fast for which link is mentioned in the doc.

I used OpenStack volume on the destination cloud however one can select glance or local basis upon their used cases.

Enable nbdkit vddk plugins

This document describes the path to build and install vddk plugins for nbdkit which is required to migrate a virtual machine from VMware to OpenStack using vpx. Please keep in mind that it requires VMware proprietary library that you must download yourself.

Deploying Restic on OpenStack Flex with User Data

Restic is an open-source backup tool that focuses on providing secure, efficient, and easy-to-use backups. This blog post will show you how to automatically install and configure Restic on a fresh OpenStack VM using user data (cloud-init).

Here’s what you’ll accomplish:

  1. Install Restic to /usr/local/bin.
  2. Configure a systemd service and timer that runs every 12 hours to back the /home directory.
  3. Store backups in Swift using application credentials.

Getting Started with OpenTofu and OpenStack Flex

OpenTofu is an infrastructure as code tool that lets you define both cloud and on-prem resources in human-readable configuration files that you can version, reuse, and share.

We will demonstrate using OpenTofu to build a three node environment. The environment will consist bastion server to connect in via ssh, a webserver to serve web content and a database server. An OpenStack account with appropriate permissions will be needed to build the environment.

Installing aaPanel on a Flex Instance

This documentation provides a comprehensive guide to installing the free version of aaPanel on an Ubuntu 24 instance running on Rackspace Flex Cloud. aaPanel is a lightweight, user-friendly control panel that simplifies server and website management by offering a graphical interface for handling web services, databases, and security configurations. There is also a paid version of aaPanel which you can purchase through them and install.

Create Octavia Loadbalancers dynamically with Kubernetes and Openstack Cloud Controller Manager

octavia

Load Balancers are essential in Kubernetes for exposing services to users in a cloud native way by distributing network traffic across multiple nodes, ensuring high availability, fault tolerance, and optimal performance for applications.

By integrating with OpenStack’s Load Balancer as a Service (LBaaS) solutions like Octavia, Kubernetes can automate the creation and management of these critical resources with the use of the Openstack Cloud Controller Manager. The controller will identify services of type LoadBalancer and will automagically create cloud Loadbalancers on Openstack Flex with the Kubernetes nodes as members.

Using ansible to create resources on flex cloud

Ansible has a wide range of modules available to create and manage resources like openstack flavors, images, keypairs, networks, routers among others on the flex cloud. These modules are available in the Openstack.Cloud ansible collection. In this post we will discuss creating resources on flex cloud using ansible modules.