I have set up a Docker Swarm cluster on the new Hetzner Cloud. First things first – the Hetzner Cloud is really amazing: Super simple, super cheap and performs as expected. It is not a bloated cloud provider that has 100x services and features that you can use for your servers, this keeps the costs and complexity down – I am really a big fan of it.
Now to the topic: Because the feature-set is simple, the Hetzner Cloud does not provide private networking (yet!). With only public IP addresses, we need to secure the overlay traffic between our docker containers!
I have not written a blog post for a while! Many things went by and I had many projects and even a new job. For quite a while I’ve started to become interested in Docker since my new job requires a daily usage.
Personally I use Docker Swarm. It is simple to use, the compose files are easy to read and it’s simple to manage a small cluster for personal projects and applications. I want to go into my setup in another blog post at another date but for now, let’s discuss the latest release of Portainer, a web interface to manage your swarm cluster!
First of all, Happy New Year :D!
January the 14th marked the date of the first “Beta” lessons of the newly founded school Dracer. The idea behind it is simple: at the beginning, the people who are on the verge of joining the hobby need a last push so they actually enter it. People with interest but no idea how to start or where to look. People that think the videos of all the pilots around the world look amazing and want to more know about them. In the long run, we want to have categories of expertise and also technical courses. I mean, what the hell is all that TXRXESCFCOSDLIPO stuff.
Now, with the first class of 30 completed, we can proudly announce that the result was amazing! People were laughing, happy at the end, asking questions, following up and most importantly, hooked. This has worked so much better than anticipated, but of course, we hit a few bumpers so I’ll try to write them down for future reference and other people to see. There is really is much to learn!
Having fun =D
I have received the ZTW Flash 30A Escs for testing purposes. Thank you Elektromodelle.ch for providing them!
They are installed on my new main rig, the ImpulseRC Helix – the rig I used to fly at the DroneWorlds World championship and the International Competition in Korea. Coming from KISS ESCs, I obviously had my doubts but after flying this quad for a while now, I can say that the ZTWs are super smooth and I d
on’t have to worry about anything!
Please note that this post is my personal opinion and experience. I’ve written this Blog before the Ibiza post because of the urgency.
The World Cup of FPV quad racing, wing racing and actually many other disciplines happened.
Naturally, you want your racer as light as possible, as compact as possible and remove all “useless” weight. I use a Graupner radio which has SumD (Similar to sbus) and meets all my requirements. I like the higher build quality of a Graupner radio in comparison to the most common used in the Racing scene, the Frsky Taranis.
The Reciever for the Grauper radio I use is a GR-16. It’s one of the smaller ones, but I really wanted to make it use even less space. I searched online for help about removing the casing which was sadly fruitless so I decided to do an adventure on my own.
So, imagine you are in the following situation:
You have a “enterprise” backup software like Veeam running. Now, for some reason the file level restore doesn’t work at 2 a.m. and you start to slightly panic. You don’t notice that you have a snapshot running on the virtual machine and the next thing you do, is a disk file restore to just completely replace the disk with the wrong or faulty data.
With that, you have fucked up. Sadly, this enterprise level software doesn’t recognize that there is an active snapshot running on the vm, and just replaces the faulty disk. This results in a broken snapshot chain because you replace the disk running an active snapshot with the same disk from an earlier time, which didn’t have a snapshot running. What does that lead to?
- You cannot remove any snapshot anymore
- Veeam depends on snapshots and thus, you won’t be able to backup anymore
- This is a productive system, very dangerous not to have any backup
Now, how do you remove that snapshot without any risk of data loss and/or corruption?
Here is my Build log of my current FPV Acro/Racing boat. Generally, I am very happy and impressed by the Alien Frame, coming from a ZMR250 v2 from FPVModel. I love my ZMR250 Frame, its very sturdy and was a good frame for my first flights I did in FPV. As a first step into FPV Racing, I still recommend a ZMR250 v2 frame as its very cheap and hard to break ( I actually wasn’t able to break it at all ).
- Lumenier LUX Flightcontroller
- xNova 2204-2300KV Motors
- Flyduino KISS 24A Race ESCs
- HS1177 FPV Camera
- TBS Core PNP50
- ImpulseRC Alien 5″ Frame
- HoTT GR-16 Reciever
- Lumenier TX5G25 VTX
- Some build materials
Let’s get started!
Sorry for not posting for a long time! I had a very busy time, new job, new year, new hobby!
I started to get interested in flying a quad copter for some time now, and about 6 Months ago, I started to build my very first Acro/Race frame. It was the ZMR250v2 from FPVModel.com with Cobra 2204/2330kv motors and DYS 20A BLheli ESCs. I used a a SPF3Racing Flight controller, which I like though I soon had issues with the USB port not working properly.
Now, some month later, I bit the bullet and bought parts for my new frame, a frame to get serious: The ImpulseRC Alien 5″!
Soon, I will post a build log about how I built it and with pictures =) My first impression is that it is a very, very clean Frame and the parts bought for it are excellent! I hope to join the Swiss National Championship with this frame, even if I probably won’t win because there are far better pilots out there than I am.
What is Quad racing/acrobatics or FPV?
For those that don’t know what that hobby is, let my try to explain it here:
Hi Network Engineers!
So, Fast Track is a new feature introduced in RouterOS 6.29. Its quite nice! With that, you can forward packages in a way that they are not handled by the Linux Kernel which greatly improves the throughput of your router.
You can activate Fast Track with that:
/ip firewall filter add chain=forward action=fasttrack-connection connection-state=established,related