#raspberry pi server

[olivergisttv]

How to Host a Website on a Raspberry Pi

If you’re a tech enthusiast or DIYer, hosting a website on a Raspberry Pi is a great project. It’s cost-effective, energy-efficient, and gives you control over your hosting environment. Here’s how to get started:   1. Set Up Your Raspberry Pi Begin by setting up your Raspberry Pi with a clean installation of Raspberry Pi OS. Make sure you have an internet connection and the necessary peripherals…

[woofinstepper]

More on the Pi server

I couldn’t just leave well enough alone. I have decided to go back to using the UBUNTU MATE Linux distribution to make my server. And I thought as long as I am doing that, I will increase the number of drives in my RAID5 array from 3 to 4. This would make resulting array substantially larger. I found some instructions on how to do this. This time I am going to try to document what I did. I bought a book called Running Linux which may help me understand the commands I am giving instead of just doing them. The book isn’t cheap, but price per pound looks reasonable. I have the 4th drive in hand and I have a Linux Mate on a 32 GB flash card for the Pi. And what happens? Well, of course, they came out with a new Raspberry Pi 4B. The new one has DDR4 memory is 3 sizes (!GB, 2GB and 4GB). Runs a little faster and most important to me, it has USB 3.0 on two of its 4 USB ports. I will probably continue with the Pi 3B+ that I have though just because the availability of the 4 is not very good right now. I have only found it at the Micro Center (in store only). That is the irritating thing about Micro Center, the great deals are in store only and there isn’t one near me.

[bakerclifford0-blog]

Raspberry Pi : The Ultimate Step by Step Guide Raspberry Pi User Guide (the updated version) gets you up and running on Raspberry Pi, whether you're an educator, hacker, hobbyist, or kid. Learn how to connect your Pi to other hardware, install software, write basic programs, and set it up to run robots, multimedia centers, and more. Gets you up and running on Raspberry Pi, a high-tech computer the size of a credit card .Covers connecting Raspberry Pi to other hardware, such as monitors and keyboards, how to install software, and how to configure Raspberry Pi Shows you how to set up Raspberry Pi as a simple productivity computer, write basic programs in Python, connect to servos and sensors, and drive a robot or multimedia center . Adults, kids, and devoted hardware hackers, now that you've got a Raspberry Pi, get the very most out of it with Raspberry Pi : The Ultimate Step by Step Guide Raspberry Pi User Guide (the updated version).

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[woofinstepper]

I purchased this 5V 8A power supply thinking it would be nice to have to power a Raspberry PI server I am trying assemble. I didn’t think enough before making the purchase. It was inexpensive, but lacked a few things like safety approvals, fuses and some way of plugging it into the wall. So I purchased a power switch/fuse holder/power connector. The connector came with a 5A 250V fuse of the 5 x 20 mm style often used in europe. Since this power supply is 8A at 5V, its output power is 40 Watts. So even if the efficiency was 70%, the power requirements would only be 57W. Lets guess the power factor is .7 that would give us 82 VA. 120 VAC line -10% for tolerance give us 108VAC. So running current shouldn’t be more than 82 VA/108V = 760 mA. This doen’t consider such things as brown outs, power glitches and inrush currents. So I put in a 1 A fuse. I don’t know how fuses are currently specified. It used to be that a UL fuse was specified that it must blow at 135% of its rating and an european fuse was specified not to blow at 200% of its rating. This made designing things for international trade difficult. I imagine that this has changed over the years since globalization has become so dominant. So I manged to get this all connected in a temporay fashion and put a tiny 47 Ohm load on it so I could see if it was working. And you can see from the photo, it put out 5.1 V. I didn’t get electrocuted, it didn’t blow the fuse, nor kick the GFI. So far, so good. I looked at the output to see if there was 60 Hz ripple and I didn’t see any. I wouldn’t expect to at such a minimal load. I will look at higher loads as soon as I can figure a good way to do that. 8A at 5V.... 40 Watts. R = V/I = 5/8 = 0.625 Ohms. A constant current source load would probably be best. Power transistor on a good heatsink.

[woofinstepper]

Pi as a server

While it appears easy enough to have a server set up using a Raspberry Pi, I see two problems. One is that I would like to have a RAID array for the server. I assume that somewhere out in the Linux/Raspbian software there is code to do that, but a server needs to have substantial disk space. I don’t see the Raspberry Pi being able to do that with its limited I/O. I know there are hats that let you install a single SATA 2.5” drive, but I would think that a minimum of 2 is required to do RAID 1 and 3 to do RAID 5. Ideally, one would want 4 drives.

I was looking to see what was available from WD labs. At one time they offered a Pi Drive, but while I could find references to it, it seems like those products are no longer available on their website. There is a link that says the details are available on their products page. That takes you to a WD page, but a search on that page finds no products.

Yesterdays attempt to udate Raspbian from Jesse to Stretch didn’t work out. It was stuck and wouldn’t respond to the keyboard this morning and I ended up downloading a current copy of NOOBs and reinstalling Raspbian.