After a DNS record change for the controller node of our lab OpenStack infrastructure, Horizon client was still displaying the old endpoint DNS hostname in the API access. Old API access settings This information is coming from the keystone database, so we need to proceed a c List endpoints list, filtered on interface …

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A quick tip to easily generate random password from a bash command line. Add the following lines to your bashrc file: 1alias genalphanumpasswd='tr -cd '&#39;'[:alnum:]'&#39;' < /dev/urandom | fold -w30 | head -n1' 2alias genpasswd='tr -cd '&#39;'[:graph:]'&#39;' < …

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Powershell is a very usefull tool when you have to work on a Windows operating system. It help's a lot in automation of recurring tasks and provide an easy way to extract informations in custom format. But the default powershell command window is very very... ugly... Here are some customizations I do when I need to use …

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"Object Storage (also known as object-based storage) is a storage architecture that manages data as objects, as opposed to other storage architectures like file systems which manage data as a file hierarchy and block storage which manages data as blocks within sectors and tracks." Source: Wikipedia-en ovh.com …

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In this article, we will see how to create, commit, revert-to virtual machine snapshots from ESXi command line. We will also talk about the very useful "linked clones" that are related to the snapshot feature. Prerequisites You only need to have a running VM on the ESXi and to know its Vmid: 1 $ vim-cmd …

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Now that we've seen how to create a nested-ESXi on virtualbox, we may need to have some content in order to test commands of procedures. Local datastore Disk creation To create a local datastore, you'll have to add a new virtual disk to your nested ESXi: First step is to create a SATA disk controller: Add a SATA …

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For testing cases it could be very useful to host a nested (= virtualized) VMware ESXi on your desk or laptop machine. For my own needs, I had to install an ESXi on virtualbox. Here is my tutorial. Installation Prerequisites In order to install an ESXi 5.5 you'll have to provide: 64-bit x86 processor with at least 2 …

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Un petit article plus, pour me rappeler moi même de la manipulation que pour vraiment générer du contenu sur ce blog. Ce matin j'ai eu à changer, sur un vCenter Server, le mot de passe par lequel le service communique avec sa base de données, voici la manipulation. Changer l'utilisateur de BDD (si nécessaire) Pour …

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Lorsqu'on gère plusieurs centaines de machines virtuelles, templates, virtual-appliance etc., on a pas spécialement envie de se palucher à la main, les opérations de mises-à-jour systématiques. En plus si vous cotoyez des gus comme @fdibot, ça devient carrément un sacrilège d'envisager de faire à la main ce genre …

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