RaspberryPi4B

Type Information

• Raspberry 4B 8GB (1,5 GHz Quad-Core ARM-Cortex A72 CPU)
• bought at pi3g.com via their shop buyzero.de at 12/08/2021 as Raspberry Pi 4 Server Set:
  • 64GB microSD
  • USB C 5 Volt 3 Ampere Netzteil
  • microHDMI auf HDMI Kabel
  • FLIRC Gehäuse
  • CAT 6 LAN Kabel 2 m

Installation

Initial Operation

• copy empty file named 'ssh' to root at microSD to enable SSH access
• microSD to slot
• plug-in USB power supply
• login via SSH with user 'pi' and pwd 'raspberry'
• enable WLAN via raspi-config
• set fixed IP for LAN and WLAN via fritz.box to 192.168.178.(72|73)
• update OS via

sudo apt update
sudo apt dist-upgrade

Docker

Installation by:

sudo curl -fsSL https://get.docker.com | sh
sudo usermod -aG docker pi // to enable docker commands w/o sudo for user pi, works after logout and login

Test by:

docker 
docker version
sudo docker run hello-world // w/o sudo or pi not added to group docker there will be an error

PostgreS(QL)

// create a docker container
docker run -p 5432:5432 --name postgres -e POSTGRES_PASSWORD=Halloo0@1 -e POSTGRES_DB=postgres -e POSTGRES_USER=postgres -v pgdata:/var/lib/postgresql/data -d postgres
// -p <HOSTPORT>:<CONTAINERPORT>
// -e <ENV_VARIABLE>=<VALUE>
// -v <VOLUME_NAME>:<CONTAINER_DIR>
// -n <NAME>

pi@raspberrypi:~ $ docker volume inspect pgdata
[
    {
        "CreatedAt": "2021-09-30T21:44:54+01:00",
        "Driver": "local",
        "Labels": null,
        "Mountpoint": "/var/lib/docker/volumes/pgdata/_data",
        "Name": "pgdata",
        "Options": null,
        "Scope": "local"
    }
]

// test access
C:\Uwes\Programme\PostgreSQL\12\bin> .\psql.exe -h uweheuer.spdns.de -U postgres postgres

// clean up everything
docker stop postgres
docker rm postgres
docker volume rm pgdata // this seems to be important, because it seems otherwise the password is denied

Configuration

• 192.168.178.72 pi raspberry

Disable WLAN

• disable WLAN by adding to /boot/config.txt and reboot

#UH 18-08-2021 switch off WLAN
dtoverlay=disable-wifi

Switch to 64 bit

• according to here
• marked /boot/config.txt with

#UH 27-12-2022

Operation

On/Off

• on/off by plug-in/off power supply

Reboot

sudo reboot

Update

sudo apt-get update && sudo apt-get upgrade