WHAT IS THE PURPOSE OF A TOOL LIKE SALTSTACK AND A BETTER QUESTION, WHAT PROBLEM DOES IT SOLVE? The two main purposes of SaltStack are configuration management and remote execution. You have probably heard or used one of the more popular alternatives of SaltStack – Ansible, Puppet, or Chef. All of them pretty much accomplish the same goal. I like Salt […]
Since you are here, you have probably heard of Docker. When you search it in Google the first result is: “Docker – Build, Ship, and Run Any App, Anywhere” – don’t believe me, try it yourself. That sounds great but in the means of Privacy and protecting your intellectual property, it doesn’t. This is because […]
VPN, or Virtual Private Network, allows you to create a secure connection to another network over the Internet which can be very beneficial for some use cases. VPNs can be used for many things, for example – access region-restricted websites, shield your browsing activity from bad guys on public Wi-Fi, connect and use local resources […]
The Icinga2 configuration options are rich and provide you with a lot of ways to re-use what you already have. They serve well, but once your monitoring becomes big enough they just don’t cut it anymore. Reducing the load on the monitoring hosts and the servers you check becomes a high priority. One way to […]
Icinga2 is a great tool built upon the foundation of the well-known Nagios monitoring, inheritingall the pros it has to offer. With many plugins available in your repository and thousands more in the community-driven Nagios-exchange website, icinga2 is a very good choice for your infrastructure monitoring.I will cover some of the optional features that can be tweaked to suit your […]
In addition to the article about the PeerVPN installation and configuration, I will now show you a more advanced and quite ‘modern’ way to provision several servers and get your VPN client up really fast. You’ve probably heard of Ansible already. Well, one of its use cases is exactly what we need here: Configuration Manager. Many […]
The rule of the “cloud” has already been established and now we have multiple vendors fighting for market share. Many companies started relying on the cloud and seeking more and more automation and could services. It looks easy, you just select a cloud provider, use its services and you have several virtual machines or containers […]
I’m not a big NFS fan ever since I worked as a Linux/Unix administrator way back in the good old days. Sometimes when the NFS server hung, lost network connectivity, or something else happened all clients that had mounts from the NFS completely blocked waiting for it to come back up, because it is so […]
Backup is an essential part of IT infrastructure management. Having HA solutions, RAIDs etc. doesn’t free you from the need for backup. In case of a human error all those techniques will not save you, only the backup will.
In my previous blog post, I was discussing how to monitor RabbitMQ as a centralized message Q of Openstack. Well, that’s quite important but the end goal of having a cloud is the instance on top of the machine. Most of you and especially the infrastructure guys who dig into monitoring will know what are the most […]