I have a Raspberry Pi that functions as a print server. It runs CUPS and it has a static IP Address. With Bind I am mapping the server to the domain 'printer.home'. I also have reverse DNS configured for 'printer.home'.

I would like to use this Raspberry Pi to host a local website - a dynamic website that lets users browse records that I have. I would like to give it the domain 'records.home'. I guess it will be no problem creating another A record for the same IP Address and 'records.home'. But what about the reverse record? Do I just omit it for this domain?

I am a college student without a lot of money so I am turning one of my Raspberry Pis into a router.

I followed these instructions in general to create a Raspberry Pi that plugs directly into my modem and creates a WiFi network.

https://medium.com/@edoardo849/turn-a-raspberrypi-3-into-a-wifi-router-hotspot-41b03500080e

Some other things I did were to install Fail2Ban and other basic security things when I first launched the Pi.

I have some devices that will need to connect by Ethernet. I have a USB to Ethernet adapter and a Ethernet Switch. I was hoping to have the internet sent through the USB to Ethernet adapter (ETH 0) to my Switch, that can plug into devices that need a wired connection.

I need the internet that goes out of the eth1 device and out of the wlan0 device to be on the same subnet. How do I set this up where they are both on the same subnet?

Hi Experts,

i do have two raspberry pi, One as publisher and another one as a subscriber. It works on the local area network without internet. Data transmission and receiving, works fine and data storing into MariaDB also works fine. The issue is time. The router run locally without internet connection. If someone switch off or restart router, the system depend on router time which not synchronise online time.

To over this issue, i did add in RTC DC3231 in both raspberry with the following setup.

#!/bin/sh
# Reset the System Clock to UTC if the hardware clock from which it
# was copied by the kernel was in localtime.

dev=$1

#if [ -e /run/systemd/system ] ; then
# exit 0
#fi

if [ -e /run/udev/hwclock-set ]; then
    exit 0
fi

if [ -f /etc/default/rcS ] ; then
    . /etc/default/rcS
fi

# These defaults are user-overridable in /etc/default/hwclock
BADYEAR=no
HWCLOCKACCESS=yes
HWCLOCKPARS=
HCTOSYS_DEVICE=rtc0
if [ -f /etc/default/hwclock ] ; then
    . /etc/default/hwclock
fi

if [ yes = "$BADYEAR" ] ; then
    /sbin/hwclock --rtc=$dev --systz --badyear
    /sbin/hwclock --rtc=$dev --hctosys --badyear
else
    /sbin/hwclock --rtc=$dev --systz
    /sbin/hwclock --rtc=$dev --hctosys
fi

# Note 'touch' may not be available in initramfs
> /run/udev/hwclock-set

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After i did this , its work on RTC time till someone reset or switch off the router. Upon router up, the raspberry pi picked up router time instead of RTC time. i have to do manually to switch to RTC time.

How i can over this, by saying just depend on RTC time only.

I have ExaGear Desktop for Raspberry Pi 3 B+ and use WINE to successfully launch an x86 program.  The x86 program needs to communicate with a device using a USB-serial adapter.  So far I have not figured out how to get the x86 program to recognize the USB-serial adapter.

On a Windows laptop, we install USB Driver: CH341SER.exe and it just works without any troubleshooting or further configuration.  I tried but it wasn't as simple as installing the CH341SER driver software using WINE on the Pi.

The endgame is to create a portable "black box programmer" to change motor control settings on my Bafang powered eBike.

http://wiseinnovationtechnologies.com/programming-your-bafang-motor/

I installed dietpi today on a Zero w. (did it on a 3B+ and setup as Hotspot no problem). I wanted to setup the zero as a webcam.
I did this 4 times before I started to install or change the configuration and reboot at least 2 times to make sure all was good.
I changed the setup to US. connected to the Wi-Fi.
Updated to the latest version of dietpi. Update the firmware.
Changed drop bear to ssh.
installed REALVNC.
But when I Install RPI WEB CAM it keeps rebooting and I can't stop it.
As I said after the 3rd time I flashed a fresh image again and rebooted at least 2 times after each change or install until I got to the RPI Web CAM issue.
I get "You're in emergency mode. Enter root password for maintenance or CTRL D.
I tried dietpi for the password and root. CTRL D does nothing but reboot back to the same area.
I'm assuming there is am issue with RPI Web Cam.
And Yes I made sure the power supply is good. I replaced the power supply with one used on my Pi3B+. It's 5.2V, 3amps.
I even tested it with my voltmeter. The issue is this pi Zero W setup works fine with a full version of Raspian and the RPI WEB CAM version I had to manually configure. I switched back to that card and all is fine. I just like the small footprint and ease of setup with DietPi. And it only starts to reboot when I add in the Web Cam distro on DietPi. I even tried some other packages after my 4th attempt, on the card, flashed a new image. In fact I added a few distros to the DietPi setup …

I posted this on raspberrypi.org on July 8,2018 and got 62 views but no replies. I was hoping someone would have some ideas why the pi is dead and maybe how to remove the heatsink/fan module.
I set up a Pi 3B+ as a router back in March 2018. I had same setup on a Pi3B that was running fine for 2 plus years with no issues and only heatsinks. Well I decided to switch the micro card to the 3B+ but of course it did not boot since the OS was not compatible.
So I flashed the newest of Raspbian , installed the code and changes for the router config and the new 3B+ was working fine. I didn't have any overheating issues but decided to put on the new dual fan system from Iuniker made for the 3B+.
This worked for I guess about 2 weeks and I went to upgrade my Pi's last week. (I have many small projects on Pi Zero, pi Zero W, Pi3B and this new Pi3B+) and could not SSH or VNC into the 3B+. So I checked on it and the only light that was on was the Red led and the fan was still running. No green activity light and the ethernet lights were not flashing.
 I found it strange the Pi was not running but the fan was. I unplugged the pi. Waited a minute and plugged the power back in. Only the Red led came on and the fan.
The green light didn't even flash once. So I tried everything. Unplugged the fan. A power supply (I uses 5V with 2.5 or 3 amps) I know is working from another Pi3B. I replaced the card with a fresh image of the OS. Still nothing. I have another Pi3B+. I took the card and …

Hello Internet!

I have a few usb miners running on a raspberry pi.

this is what i'd like to achieve.

1. automatically reboot pi every... say... 4 hours

[list=2]when pi starts up - start screen session and run cmd: sudo /home/pi/git/vthoang/cgminer/cgminer -o stratum+tcp://eu.stratum.slushpool.com:3333 -u zbw123.worker1 -p x --gekko-2pac-freq 150 [/list]

there are a few examples of this being done that i can find online but they all seem to assume a certain level of linux understanding and the truth is i know absolutely nothing about linux. i can follow instructions to the letter but thats about it! :-)

i have bought a book "for dummies" but i'm not finding the answers i need. If it were windows i'd wright a start.bat file i guess.

I downloaded a GUI for crontab which helps you manage scheduled tasks but of course it requires the appropriate files to exist already so that i may run....

I am running nginx on a raspberry pi.

I want to run it as a reverse proxy.

I have multiple servers running ssl and one needing forwarding on multiple ports (2195,2196,5228,5229,5230,38880,38881,80,443)

My question is two fold.

Is this even possible? in other words can you forward ports that are non http based ports. For example ports other than 80 8080 443 stuff like that.

I own a domain linked to a dynamic DNS service so I have *.mydomain.com available (* being anything I want it to be)

Where do I set the pi to point to a network time server?

good day, I am testing serial port communciation on raspberry pi 3 interface with SIM 900 module. The code are attached with error message. Thanks

import serial
import os, time
 
# Enable Serial Communication
port = serial.Serial("/dev/ttyS0", baudrate=38400, timeout=1)
 
# Transmitting AT Commands to the Modem
# '\r\n' indicates the Enter key
 
port.write('AT'+'\r\n')
rcv = port.read(10)
print (rcv)

>>> 
======================== RESTART: /home/pi/SIM900.py ========================
Traceback (most recent call last):
  File "/home/pi/SIM900.py", line 1, in <module>
    import serial
  File "/home/pi/serial.py", line 5, in <module>
    port = serial.Serial("/dev/ttyS0", baudrate=38400, timeout=1)
AttributeError: module 'serial' has no attribute 'Serial'
>>>

Good day, I am newbie in python programming. Can get some information on treading (multi processing). I am doing project with raspberry pi 3 to monitor the following sensor: -
1. temperature
2.humidity
3. CO
At same time using 3g USB dongle to push data to cloud. My critical issue is 3g USB dongle, need to monitor that everytime.

Issue:
Python Script will not run because sshtunnel import to Python 3 does not seem import properly to the Pi.
I am thinking we are using the wrong version of ssh module python script for the Pi but I am struggling.  

 Hardware :
Raspberry Pi 3 Model B -  V 1.2  2015

OS Software :
pi@raspberrypi:~ $ cat /etc/*-release
PRETTY_NAME="Raspbian GNU/Linux 8 (jessie)"
NAME="Raspbian GNU/Linux"
VERSION_ID="8"
VERSION="8 (jessie)"
ID=raspbian
ID_LIKE=debian

Script:
import sshtunnel #import SSHTunnelForwarder
import mysql.connector

ID_String_Last = ["0"]

sshtunnel.SSH_TIMEOUT = 5.0
sshtunnel.TUNNEL_TIMEOUT = 5.0

with sshtunnel.SSHTunnelForwarder(
    ('**********this is the host in here **********'),
    ssh_username='', ssh_password='**********************',
    remote_bind_address=('127.0.0.1,', 3306)
) as tunnel:
    connection = mysql.connector.connect(
        user='*********username**********', password='*****************',
        host='127.0.0.1', port=tunnel.local_bind_port,
        database='northgm7_489.log_1001',
    )


Output:
Python 3.4.2 (/usr/bin/python3)
>>> %Run '17-10- 15 V6.1 Pi mySQL to Ash server.py'
Traceback (most recent call last):
  File "/home/pi/Desktop/17-10- 15 V6.1 Pi mySQL to Ash server.py", line 3, in <module>
    import sshtunnel #import SSHTunnelForwarder
ImportError: No module named 'sshtunnel'


Question:
Does anybody know what version of module is required for this platform so that it …