ConvolutedDKBG Docker AWS Method To Update Ubuntu Desktop Background Image

Project: Download Nasa's Astronomy image of the day and reset the background image on my Ubuntu Desktop, in an extremely convoluted, but cost efficient, method using Docker and AWS.

Image Source https://apod.nasa.gov/apod/astropix.html or https://apod.nasa.gov/apod/archivepix.html

Image Magik text overlay http://www.imagemagick.org/Usage/annotating/#anno_on

Ubuntu Assuming you're using standard Ubuntu 16.04 with Unity, you can use the following command to set the wallpaper:

gsettings set org.gnome.desktop.background picture-uri "file:///home/username/path/to/image.jpg"

You can get the current URI of the background image as follows:

gsettings get org.gnome.desktop.background picture-uri 'file:///home/serrano/Pictures/x.jpg' And set the background URI as follows (which will immediately update your desktop background):

gsettings set org.gnome.desktop.background picture-uri file:///home/serrano/Pictures/y.jpg

Commands to get capture the image URL: curl https://apod.nasa.gov/apod/astropix.html | grep jpg % Total % Received % Xferd Average Speed Time Time Time Current Dload Upload Total Spent Left Speed 100 4338 0 4338 0 0 7268 0 --:-<IMG SRC="image/1706/BHmassChartGW17p1024.jpg"

wget https://apod.nasa.gov/apod/image/1706/BHmassChartGW17p1024.jpg

Spin up VM

spin up container

cp dkbg.jpg dkbg.jpg.`date +%m%d

curl https://apod.nasa.gov/apod/astropix.html 2> /dev/null | grep IMG |sed -r 's/<IMG SRC="(.*)"/wget -q -O dkbg.jpg https://apod.nasa.gov/apod/\1/' |/bin/bash

eval $(curl https://apod.nasa.gov/apod/astropix.html 2> /dev/null | grep IMG |sed -r 's/<IMG SRC="(.*)"/wget -q -O dkbg.jpg https://apod.nasa.gov/apod/\1/' )

eval $(curl https://apod.nasa.gov/apod/astropix.html 2> /dev/null | grep IMG |sed -r 's/<IMG SRC="(.*)"/curl -o dkbg.jpg https://apod.nasa.gov/apod/\1/' )

curl https://apod.nasa.gov/apod/astropix.html 2> /dev/null | grep IMG |sed -r 's/<IMG SRC="(.*)"/curl -o dkbg.jpg https://apod.nasa.gov/apod/\1/'

eval $(curl https://apod.nasa.gov/apod/astropix.html 2> /dev/null | grep IMG |sed -r 's/<IMG SRC="(.*)"/curl -o dkbg.jpg https://apod.nasa.gov/apod/\1/' ) ; gsettings set org.gnome.desktop.background picture-uri "file:////home/jrogers/dkbg.jpg"

su -c "setenforce 0" # Required for CentOS mkdir -p /docker/ConvolutedDKBG service docker start cd /docker/ConvolutedDKBG mkdir alpine cd alpine sudo docker pull alpine sudo docker run -it --rm -v /docker/ConvolutedDKBG/vol1:/home alpine /bin/ash

Now from within Alpine, installing curl inside the get image script: sudo docker run -it --rm -v /docker/ConvolutedDKBG/vol1/:/home alpine /bin/ash apk --no-cache add curl /bin/ash /home/getnasaIOD.sh

One Line: sudo docker run -v /docker/ConvolutedDKBG/vol1/:/home alpine /bin/ash /home/getnasaIOD.sh

#!/bin/ash apk --no-cache add curl curl https://apod.nasa.gov/apod/astropix.html 2> /dev/null | grep IMG |sed -r 's/<IMG SRC="(.*)"/curl -o /home/dkbg.jpg https://apod.nasa.gov/apod/\1/' | /bin/ash

Or build curl into alpine: mkdir alpine.curl cd alpine.curl/ vi Dockerfile

FROM alpine RUN apk update && apk upgrade RUN apk --no-cache add curl

sudo docker build . sudo docker build -t alpine.curl .

#!/bin/ash curl https://apod.nasa.gov/apod/astropix.html 2> /dev/null | grep IMG |sed -r 's/<IMG SRC="(.*)"/curl -o /home/dkbg.jpg https://apod.nasa.gov/apod/\1/' | /bin/ash

sudo docker run -it --rm -v /docker/ConvolutedDKBG/vol1/:/home alpine.curl /bin/ash

One line: sudo docker run -v /docker/ConvolutedDKBG/vol1/:/home alpine.curl /bin/ash /home/getnasaIOD.sh

Host image on web server: mkdir /docker/ConvolutedDKBG/vol1/html/images mkdir -p /docker/ConvolutedDKBG/vol1/nginxconf sudo docker run -it --rm --name mynginx -v /docker/ConvolutedDKBG/nginx/conf:/tmp -P nginx /bin/bash inside nginx: cp -r /etc/nginx /tmp

sudo docker run -it --rm --name mynginx -v /docker/ConvolutedDKBG/nginx/content:/tmp -P nginx /bin/bash inside nginx: cp -r /usr/share/nginx/html /tmp

sudo docker run --name mynginx -v /docker/ConvolutedDKBG/vol1/html/:/usr/share/nginx/html:ro -v /docker/ConvolutedDKBG/vol1/nginxconf:/etc/nginx:ro -P -d nginx

So use this for now: sudo docker run --name mynginx -v /docker/ConvolutedDKBG/vol1/html/images:/usr/share/nginx/html/images:ro -P -d nginx sudo docker stop mynginx sudo docker rm mynginx

sudo docker-compose -f docker-compose_haproxy.yml down --rmi all; sudo docker volume rm convoluteddkbg_shared-vol

sudo docker-compose -f docker-compose_haproxy.yml up --build -d

sudo docker-compose -f docker-compose_haproxy.yml scale nginx=5

for i in {1..5} do sudo docker exec -it convoluteddkbg_nginx_$i sed -i "s/CONTNAME/nginx$i/" /usr/share/nginx/html/index.html done

Store image file on a database:

Store Host image in pieces, with high availability, kill one piece and recover or continue to host from parity:

Host image behind load balancer:

Overlay image with AWS location it is being hosted on: