Docker, Docker Compose, and Portainer - Lemmy.World

So let me start with what I think is going on and then you guys/girls can correct me: 1. Docker can be run on the command line to creates containers based on command line input including any settings needed by the container. 2. Compose files are files that hold all the settings needed to both create the container(s) and the settings they need. They basically keep a permanent record of what you want done. This would allow users to share their compose files to facilitate someone else setting up the same containers. 3.Portainer is a GUI for all things Docker. It creates compose files for containers that were created within it’s framework. So my questions are: 4. I assume that any container(s) I create will show up in portainer whether I create them in docker manually, process them using a docker compose file, or create them in portainer itself. 5. Is there a compose file generated whenever you deploy a container or stack if one was not used to create the container(s). It seems like this would be a nice feature to have since there are more than a few ways to create a container. 6. Where are all these compose files stored? I get to decide where to store compose files I create, but where are the compose file generated by portainer? I read that they exist within the portainer container but I don’t know how to access them. opening a console in portainer didn’t work. Yes, I am trying to run before walking but that’s just how I learn. Thanks

Network server/NAS - Lemmy.World

I need some advice, or at least pointers on where to go to learn more. I have been considering adding some type of backup to my network. Here is what I would like to be able to do: 1. Primarily, back up my devices, whether that be desktops, laptops, or mobile, preferably automatically, regardless of OS. I have Windows, android, and Linux in the house and would like to have the devices automatically back themselves up each night. 2. Possibly stream audio, video, and images (images to a photo frame would be cool). 3. any cool other stuff I may imagine such as more server type stuff like home automation, password vault, and anything else applicable that I haven’t thought of yet. I currently have a RaspberryPi 4 running Pihole. I know I could easily add more services to this device if needed. So I was thinking of getting a 4 bay NAS but a dedicated Synology box is going to cost me at least a grand. Would I get more flexibility AND save money by buying a N100 machine? Would this give me a machine that can be both a server AND a NAS? Can I duplicate the Synology software with FOSS? I don’t know much about NAS boxes but they seem expensive for what you get. I have no plans to expose this to the internet so security is perhaps less important to me. Thanks in advance and please add whatever you advice or comments you may have about the best way to set this up. Again, the system is designed primarily as backup but it would be nice for it to be able to other things as well. Backing up the mobile devices is of prime concern and I’m not sure how that would be accomplished regardless of what direction I take, so any info on that would be helpful. Thanks

what are our thoughts after this lose to the Mets? - Lemmy.World

Despite a great showing by Wheeler, the Mets seemed to be able to hit anything the bullpen threw them. It was crazy how efficient NY suddenly became. Meanwhile, our bats stayed pretty quiet all night. I hope the Phillies bats wake up in game two. Go Phil’s!

999 piece puzzle from the thrift store. - Lemmy.World

how the heck does FM work,? - Lemmy.World

Kind of an ELI5, but I tune a radion into a specific frequency to listen to a station. If that frequency is constantly being modulated (changed), how is the radio not going in and out of tune? I expect it is finding a way to measure multiple frequencies around the tuned station and decodes the data from it’s deviation from the tuned frequency?

2 player control layout: suggestions welcome - Lemmy.World

Anyone have any advice regarding my design? I’m figuring on playing older titles mostly so I think the 6 action buttons are more than enough to play on. That will allow me to map an A, B, X, Y, L1, L2 for console games. On the top row I can place a Select (player), Start (coin) as well as a hotkey button. That leaves me with an extra button at the top if anyone can think of what I can use it for. Also, I’m planning on one button on either side for a poor man’s pinball machine. I figured I’d ask here before mocking it up in case I missed anything.

DC Theory: negative voltage - Lemmy.World

I’m trying to understand what’s happening in this circuit: I------------------T1 (+333V) I I I R1(10K) (pos) I 1000V I------------gnd (0V) (neg) I I R2(10K) I I I IT2(-333V) I I I R3(10K) I I I-----------------IT3 (-666.7V) I am learning basic DC theory from reading and sometimes I come across something I’d like to ask a question about, so: 1. In the above circuit, without the ground, the voltage across all components would begin at 10V and finish at 0V. By adding a ground, I’m basically saying “here is 0V” and everything gets redefined in reference to that point and I end up with a 10 volt circuit with +3.33 as it’s highest voltage and -6.667 as it’s lowest. 2. The electrons could care less, they still flow from the anode to the cathode of the battery under normal conditions, going from the highest potential to the lowest. 3. This example was only used to demonstrate voltage dividers. It revolved around worker protection present in aluminum processing. Each machine is in series and mobile grounds are used nearest the machine a worker is using. I assume that this allows the worker to have the least exposure to electrical shock as they are also at ground potential? I actually think working though these questions has cleared everything up, but please, comment on anything I got wrong. Also, sorry about the crappy drawing, the autowrap in this editor really made things tough to format Thanks!