pdcastro

import asyncio
from dataclasses import dataclass
from datetime import datetime, timezone
from PyTado.interface import Tado

TADO_USERNAME = "xxxx"
TADO_PASSWORD = "xxxx"


@dataclass

pdcastro

#!/bin/bash

# Get a full container name given its short service name.
# The full container name can then be used as argument for
# the `balena-engine exec` command.
#
# Usage instructions:
#
# * Save this file somewhere, e.g.:
#   $ vi /tmp/get_container_name.sh

pdcastro

balenaOS in a libvirt / qemu / kvm virtual machine

Successfully tested with Ubuntu 20.04 as the host OS in 2 quite different "environments":

• Intel NUC machine (bare metal) on my desk.
• Google Cloud Compute Engine instance:
  • Instance type: 'n2-standard-2', 8GB RAM, 2 vCPUs (Intel Cascade Lake), 10GB disk
  • Nested virtualization enabled as per docs:
    • https://cloud.google.com/compute/docs/instances/nested-virtualization/overview
• https://cloud.google.com/compute/docs/instances/nested-virtualization/enabling

pdcastro

#!/usr/bin/env python3
import fileinput, sys

exitCode = 0

for line in fileinput.input():
    if line.startswith('REMOTE_EXIT_CODE='):
        exitCode = int(line.split(sep='=', maxsplit=1)[1])
    else:
        print(line, end='')

pdcastro

#!/usr/bin/env bash

# Provision an Ubuntu or similar system as an openBalena "local machine"
# Tested with Ubuntu 20.04 LTS

set -eo pipefail # quit this script on errors

CERT_PATH="/usr/local/share/ca-certificates/openbalena.crt"
INSTALL_DIR="/opt"
CLI_BIN_PATH="/usr/local/bin/balena"

pdcastro

#!/bin/bash

...

fix_route () {
  good_wifi=$(ip route | perl -ne '/default\s+via\s+(\S+).+?metric\s+600/; if ($1) {print $1; exit}')
  good_eth0=$(ip route | perl -ne '/default\s+via\s+(\S+).+?metric\s+100/; if ($1) {print $1; exit}')
  bad_eth0=$(ip route | perl -ne '/default\s+via\s+(\S+).+?metric\s+20100/; if ($1) {print $1; exit}')
  # if there are no good routes with metrics 100 or 600, and there is a "bad"
  # route with metric 20100, assume the bad route is actually good and use it

pdcastro

FROM balenalib/%%BALENA_MACHINE_NAME%%-python:3
RUN apt-get update && apt-get install kbd git patch
RUN mkdir -p /usr/src/mydash
WORKDIR /usr/src/mydash
RUN git clone https://github.com/boppreh/keyboard
COPY keyboard.patch /usr/src/mydash/keyboard/
RUN cd keyboard && patch -p1 < keyboard.patch
ENV PYTHONPATH="/usr/src/mydash/keyboard:${PYTHONPATH}"
CMD python keyboard/examples/stdin_stdout_events.py

pdcastro

FROM eu.gcr.io/buoyant-idea-226013/arm32v7/busybox
RUN uname -a
CMD while : ; do echo "(Plain Dockerfile 3) $(uname -a)"; sleep ${INTERVAL=5}; done

pdcastro

FROM balenalib/%%BALENA_ARCH%%-debian-node:10.16-jessie-build as build
WORKDIR /usr/src/app
COPY . .
# CMD ["npm", "start"]
CMD ["/usr/local/bin/node", "index.js"]

pdcastro

# Sample Dockerfile for installing balena-cli on Ubuntu Bionic
# Usage:
#     $ docker build -t cli .
#     $ docker run -it --privileged --network host -v /var/run/docker.sock:/var/run/docker.sock cli
FROM ubuntu:18.04
# install dependencies - don't install nodejs or npm via apt-get!
RUN apt-get update && apt-get install -y curl git python g++ make
ENV NODE_VERSION v12.20.2
ENV NVM_DIR /usr/local/nvm
ENV PATH $NVM_DIR/versions/node/$NODE_VERSION/bin:$PATH