Docker on IOT - Dockercon19 SFO Recap & Announcements, Bangalore
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This document discusses using Docker on IoT devices like Raspberry Pi. It provides steps to set up a Docker Swarm cluster on Raspberry Pi and create a Docker container to blink an LED connected to a Raspberry Pi. Some key points covered include why IoT needs Docker due to limited hardware resources, setting up the Docker Swarm cluster, creating a Dockerfile and Python script to blink an LED, building the Docker image, and running the container on Raspberry Pi. Examples codes for the Dockerfile, Python script and commands to build/run the container are also included.
![Dockerfile
# Python Base Image from https://hub.docker.com/r/arm32v7/python/
FROM arm32v7/python:2.7.13-jessie
# Copy the Python Script to blink LED
COPY led_blinker.py ./
# Intall the rpi.gpio python module
RUN pip install --no-cache-dir rpi.gpio
# Trigger Python script
CMD ["python", "./led_blinker.py"]](https://image.slidesharecdn.com/docker-iotrpi-190615135312/85/Docker-on-IOT-Dockercon19-SFO-Recap-Announcements-Bangalore-10-320.jpg)
![docker-build
pi@raspberrypi:~/docker-ledblink $ docker build -t "docker_blinker:v1” .
Sending build context to Docker daemon 3.072kB
Step 1/4 : FROM arm32v7/python:2.7.13-jessie ---> fd232f7d5f5f
Step 2/4 : COPY led_blinker.py ./ ---> Using cache ---> 2c20ac080696
Step 3/4 : RUN pip install --no-cache-dir rpi.gpio ---> Using cache --->
1d7557012625
Step 4/4 : CMD ["python", "./led_blinker.py"] ---> Using cache ---> 856014f90903
Successfully built 856014f90903
Successfully tagged docker_blinker:v1](https://image.slidesharecdn.com/docker-iotrpi-190615135312/85/Docker-on-IOT-Dockercon19-SFO-Recap-Announcements-Bangalore-11-320.jpg)
Docker on IOT - Dockercon19 SFO Recap & Announcements, Bangalore
- 1. Docker on IOT Dockercon19 SFO Recap & Announcements, Bangalore 15 Jun 2019
- 2. $Whoami Sangam Biradar Github-sangam14 Twitter-BiradarSangam $curl engineitops.icu - My Personal Blog Website - Over 100+ blog post on docker | Golang and kubernetes and cloud - Unique 10000+ hits - Research Papers Presented/Published in the Conference Proceedings(IEEE) 1.“Build Minimal Docker Container Using Golang’’- presented and published in the proceedings of the International Conference ICICCS2018 at Vaigai College Of Engineering, Madurai 14 June 18
- 3. Agenda - Why the IOT Needs Docker? - How to setup Docker Swarm Cluster on Raspberry Pi - Docker Container for Raspberry Pi to Blink an LED - Questions?
- 4. Why the IoT Needs Docker? - Minimal hardware resources. - Geographic distribution. - Limited or sporadic network access - Widely varying device environments.
- 5. How to setup Docker Swarm Cluster on Raspberry Pi?
- 6. Docker Container for Raspberry Pi to Blink an LED - Install Docker on Raspberry pi sudo apt-get update && sudo apt-get upgrade curl -sSL https://get.docker.com | sh sudo usermod -aG docker your-username
- 8. Clone repo Git clone https://github.com/sangam14/Docker-IOT-rpi.git $ cd Docker-IOT-rpi Docker-IOT-rpi $ ls Dockerfile ledblinker.py readme.md
- 10. Dockerfile # Python Base Image from https://hub.docker.com/r/arm32v7/python/ FROM arm32v7/python:2.7.13-jessie # Copy the Python Script to blink LED COPY led_blinker.py ./ # Intall the rpi.gpio python module RUN pip install --no-cache-dir rpi.gpio # Trigger Python script CMD ["python", "./led_blinker.py"]
- 11. docker-build pi@raspberrypi:~/docker-ledblink $ docker build -t "docker_blinker:v1” . Sending build context to Docker daemon 3.072kB Step 1/4 : FROM arm32v7/python:2.7.13-jessie ---> fd232f7d5f5f Step 2/4 : COPY led_blinker.py ./ ---> Using cache ---> 2c20ac080696 Step 3/4 : RUN pip install --no-cache-dir rpi.gpio ---> Using cache ---> 1d7557012625 Step 4/4 : CMD ["python", "./led_blinker.py"] ---> Using cache ---> 856014f90903 Successfully built 856014f90903 Successfully tagged docker_blinker:v1
- 12. Run Container pi@raspberrypi:~/docker-ledblink $ docker container run -- device /dev/gpiomem -d docker_blinker:v1 OR docker container run --privileged -d docker_blinker:v1 Reference : https://github.com/raspberrypi/linux/pull/1112
- 13. Demo
- 14. You should see it successfully Running Cheers ! Stop container :- docker stop $(docker ps -a -q) https://github.com/collabnix/dockerlabs/blob/master/ beginners/install/raspberrypi3/Docker- IOT_Using_Arduino_Uno_and_Johnny-Five.md
- 15. Questions?
- 16. Thanks