I defined Docker Swarm cluster with 20 nodes and created service using Nginx HTTP server Docker image. I scaled it to 1000 container instances, which took a while on my demo hardware. Containers are up and running but to get such statistics from Portainer CE UI is quite difficult, so I suggest using CLI in such a case: I got exacly 1000 containers on my service named “nginx3”. Hardware is not so much utilized, combined 2 servers RAM usage oscillates around 50GB, load stays low as there is not much happening, so even using 20 VM and Docker containers, we
If you wonder how to automatically deploy 20 nodes of Docker Swarm and run 100 Docker containers in it, then continue reading. I will show how to achieve this by using Terraform, Ansible and Portainer. Course of action What is Docker Swarm and why I need to have 20 of these? Docker is containers toolkit utilizing cgroups, namespaces which allows to control and share resources of the CPU and operating system. Docker Swarm its a special kind of runtime mode, which allows to run multiple clustered nodes which can be separate physical computers or virtual machines. It gives us scalability
If you wonder how to automate Ubuntu virtual machine creation and then deploy it to Proxmox in multple copies, then you are looking for Packer and Terraform. Side note: going for virtual machines in Proxmox is the proper way. I tried for several days to have LXC containers working, however finally I will say that it is not the best option with lot of things going bad like cgroups, AppArmor, nesting, FUSE, ingress networking etc. There is literally too much to handle with LXC and with VM there is no such problem, so discussion end here in favour of Proxmox
On fresh installation of Ubuntu 22, using Opera for video playback can be an issue. So even after installing all things that you may think it could help – it does not work. The solution is to install chromium-ffmpeg and copy its libffmpeg.so library into Opera installation folder. Be aware that snap installation path differs in few places so check your installation. After copying ffmpeg library, just restart Opera and the video, previously not loading in LinkedIn, will work.
If you run digital services platform or critical infrastructure then most probably you are covered by NIS 2 and its requirements including those concerning information security. Even if you are not covered by NIS 2, then still you may benefit from its regulations which seem to be similar with those coming from ISO 27001. In this article I show how to automatically deploy anti-rootkit and anti-virus software for your Linux workstations and servers. TLDR By using rkhunter anti-rootkit and ClamAV anti-virus you are closer to NIS 2 and ISO 27001 and farther away from threats like cryptocurrency miners and ransomware.
The article explores the use of ArchiMate, a modeling language, for enterprise architecture, focusing on its application through the Archi tool. ArchiMate offers a structured approach to modeling complex IT systems by providing various layers such as motivation, strategy, business, and technology. The author explains how Archi facilitates the visualization of enterprise architecture, making it easier to manage and understand. Additionally, the article covers practical aspects like setting up a Git repository for team collaboration and managing model changes effectively. A practical example project demonstrates the application of these concepts in a real-world scenario. In complex world of IT artifacts
Create secure, high-performance, affordable environment for your container applications using Hetzner dedicated servers.For around 50€ per month. This setup can also be done using different server providers, both dedicated and shared, even on public cloud. This tutorial has not been sponsored by Hetzner or any other software vendors. If you are interested in similar setup, please drop me a message via Linkedin. Goal The goal for this setup is to run Docker container in Swarm mode in secure and reliable environment. For sake of security we enable Proxmox firewall, pfSense firewall and Suricata IDS/IPS. For sake of reliability we configure
It is possible to make wire based motion sensor from Satel, wireles using Zwave network. Satel Opal, Opal Plus and Opal Pro have similar case which can hold additional module of Fibaro Smart Implant. On the picture below is on the bottom right side on the case, just below the sensor module. It fits quite well here. Both sensor and implant are powered by 12V DC, so you need to have only 2 wires coming to the sensor intead of 3 or more. It is especially important if you already made in-soil wiring and would not like to change it
Recently we’ve ordered Fibaro’s HC3 as a replacement for OpenHAB. First because it has integration with Satel alarm system and second that it has native Zigbee support next to default Zwave. OpenHAB also has support for Satel and by using external adapter you can connect Zigbee devices too. So why change OpenHAB to HC3 you can ask. Because it is a commercial product with a support and it feels like a product even if OH has similar or greater capabilites in few areas. Any cons? Sure thery are. Although it supports Nice devices like gates and garage doors, it works