I had a need to show dashboard with monitoring information on several screens in the office. There are several old Raspberry Pi Model B+ and a hypervisor with a virtually unlimited amount of resources.
Apparently the Raspberry Pi Model B+ does not have enough power to keep the browser running constantly and draw a large amount of graphics in it, which is why the page is partially buggy and often crashes.
I found a fairly simple and elegant solution, which I want to share with you.
Short guide how to setup Keycloak for connect Kubernetes with your LDAP-server and import users and groups. It will allow you to configure RBAC and use auth-proxy to secure Kubernetes Dasboard and another applications, which have no authentification from begining.
This guide is updated version of my previous article Creating High Available Baremetal Kubernetes cluster with Kubeadm and Keepalived (Simple Guide) Since v1.13 deployment has become much easier and more logical. Note that this article is my personal interpretation of official Creating Highly Available Clusters with kubeadm for Stacked control plane nodes plus few more steps for Keepalived.
If you have any questions, or something is not clear, please refer to the official documentation or ask the Google. All steps described here in the short and simple form
This guide is a free interpretation of official Creating Highly Available Clusters with kubeadm for Stacked control plane nodes. I don’t like this difficult form which used there, so I wrote this article.
If you have any questions, or something is not clear, please refer to the official documentation or ask the Google. All steps described here in the short and simple form
Here is written steps for install Kolab Groupware server and integrate it with FreeIPA server.
Most of actions requires basic understanding in LDAP mechanism. FreeIPA should be already installed before preparing Kolab installation. We will connect only users from the existing tree (which provided by FreeIPA), and we will create new tree for the rest Kolab resources, like mail groups, shared mailboxes, etc.
In the end, we will can authenticate them, edit their parameters via kolab-webadmin, and manage other resources.
In this post, I’m going to introduce you to a cool technology for Kubernetes, LTSP. It is useful for large baremetal Kubernetes deployments.
You don’t need to think about installing an OS and binaries on each node anymore. Why? You can do that automatically through Dockerfile!
You can buy and put 100 new servers into a production environment and get them working immediately - it’s really amazing!
Intrigued? Let me walk you through how it works.
Few time ago LINBIT released their new solution LINSTOR which is providing orchestration tool for manage multiple DRBD-arrays.
For example you can have few nodes, each one will have own LVM or ZFS pool, LINSTOR will automatically create new volumes there and replicate or distribute them using DRBD protocol.
LINSTOR supports thin-provisioning, snapshots and many other interesting things.
This solution is good suitable for virtual machines and containers.
