Posts Tagged ‘Tutorials’
Setup Multiple vNICs on an OpenStack-Based Ubuntu 18.04 VM
Introduction If you need to add a secondary vNIC to an existing OpenStack-based Ubuntu 18.04 virtual machine (VM), here’s a handy guide. There are some ways this process can vary, but using the steps below will help you keep all your vNICs intact–even through a restoration process. Check out how below: Prerequisites Before you begin,…
Read MoreSetup multiple vNICs on an OpenStack-based CentOS VM
Introduction Sometimes, you need an external Internet-facing floating IP (FIP) for your existing OpenStack-based CentOS VM with an internal network interface. However, since the VM is going to be in use, getting rid of the old internal-facing network interface may not be possible. This can be because data is already flowing to it, or for…
Read MoreOpenstack VM Rebuild with Same IP Address
Introduction Oops! You accidentally created an ephemeral virtual machine (VM) instead of a volume-backed one! On top of that, it’s already in production and you don’t want to start fresh or have to deal with updating host inventories. Relax! There’s a way out! It’s a somewhat painful, but recoverable, way out. Check it out below:…
Read MoreSignal Tips and Tricks
Introduction If there was anything we learned while we were all quarantining at home, it’s that all the data we have in our devices might not be as safe as we’d like. Anything not made completely and totally private and encrypted is subject to interception or scraping, indefinite storage, analysis, use, and misuse. This is…
Read MoreAdding Targets to Prometheus
Introduction In this tutorial, you’re going to learn how to set up and add targets to Prometheus via Kubernetes. Don’t worry, it’s totally not complicated, and there are just a few super easy steps to cover. However, for learning’s sake, we’ll also be going over configuration maps, target formatting, and how to add the targets…
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