Found 6 results
SSH client configuration for Jump Host
SSH client configuration for Jump Host is just a simple, fast and efficient way to configure your local SSH client to remote access via SSH other external networks / hosts. In the same time we can say that this solution adds a layer of security as well if your environment is not so secure for whatever reason, we have seen this quite often but let’s not talk about this yet. In this short tutorial we will try explain in a very simple way how you may configure your local SSH client configuration file in order to connect straight to one […]
Category: Security | Published: 10/08/2018 | Updated: 15/11/2018Create CoreOS Container Linux Ignition File
With all recent changes within CoreOS’s Container Linux distribution one of the most notable change is related to the Ignition file, basically this file handles the configuration for any Container Linux installation and we can say that it is pretty powerful. The concept behind this is somehow simple but as we have already said, quite powerful, allowing the users to configure the operating system right from the start with all basic and advanced settings needed. In this short tutorial we will cover the basics of how to create a simple .yaml CoreOS Container Linux ignition config file and how to […]
Category: General | Published: 10/01/2020 | Updated: 10/01/2020Setup a Private Docker Registry
Setting up a private Docker registry locally for our organisation or maybe for personal use can be seen as a must if we don’t want to expose publicly our custom Docker images. It is true that we can easily get a private repository if we would go for a paid subscription to one of the providers available out there on the market that are offering such services, but why doing so when we can simply do it by ourselves, internally, completely isolated and being under our control. Having a private Docker repository / registry will give us the ability to […]
Category: Docker | Published: 20/12/2019 | Updated: 31/12/2019Resize RAID 0 array by adding new disks
In this tutorial called Resize RAID 0 Array by Adding New Disks we will learn how to extend an existing RAID 0 Array in just a few easy steps via CLI. Before starting to resize your RAID 0 array please do take a backup of your data, this is very important as the resize action can lead to data loss. It’s well known that RAID 0 architecture by definition is very fast but in the same time it is not the safest, at any time one of the disks can fail and the entire array could be lost. It is […]
Category: General | Published: 10/01/2019 | Updated: 23/04/2019How to install Elasticsearch 2.4 and OpenResty on CentOS 7
In this tutorial we’ll explain how to install and configure a three node Elasticsearch 2.4 cluster on CentOS 7. Also, we’ll learn how to install OpenResty that will provide a layer of security for our Elasticsearch cluster, Elasticsearch-HQ that will give us some nice metrics, Kopf plugin and of course Kibana. Why ES 2.4? Well it’s complicated but lets say we’ve choose 2.4 just because this particular version isn’t supported anymore by Elastic and some of you may be “forced” to use this version for a while until you redesign your software to comply with a newer version in terms […]
Category: Security | Published: 18/04/2018 | Updated: 05/11/2018Generate SSH Key – Linux, Mac and Windows
In this quick tutorial, Generate SSH Key, we will learn more exactly how to generate a SSH Key in Linux or Mac using a terminal window and also in Windows using Putty. Before we start our little journey we should be clear about one thing, all SSH Keys consists of two parts, a Private Key and a Public Key. In this article we’ll generate both these keys and we’ll learn the importance but also the difference between these two. What is a Pivate Key As we said in our introduction a SSH Key contains a Private Key and a Public […]
Category: Security | Published: 09/02/2018 | Updated: 05/11/2018