For a long time my father has beem complaining that using the printer wasn’t practical enough, so to solve this I decided to add a Raspberry pi Zero W connected to my printer (HP Deskjet F2050) and share the printer using CUPS.
Initially you need to connect to your RPi and install CUPS.
sudo apt-get install cups
If you want to have a webinterface to configure it from your local network, update /etc/cups/cupsd.conf
sudo vim /etc/cups/cupsd.conf
Find the line:
And update it to:
# Listen localhost:631
You will have multiple <Location, if you want to be able to access only from your computer, add Allow from YOUR_IP for every section. Example:
Allow from 10.0.0.2
(If you want from any, use Allow from all)
Add your user (in my case PI) to lpadmin group.
sudo usermod -a -G lpadmin pi
Access your Raspberry Pi ip on your browser on port 631 (https://RPI_IP:631/).
Go to Administration - Add printer Menu. You should see your local printer there, select it and follow the wizard to setup it.
If you’re using HP printer and can’t find yours, try:
I’m using a custom Dockerfile which comes from php:7.0-fpm and add sendmail support and mysql extension. There is a custom starter script which will run sendmail + php-fpm. (I know I should create a specific container for sendmail)
On this container I’m basically mapping some php files and config files:
./wordpress.matbra.com to /var/www/wordpress.matbra.com which are my wordpress files
./php7fpm/sendmail.mc to /usr/share/sendmail/cf/debian/sendmail.mc which is my configuration file for sendmail
I’m also mapping the port 9000 to 9000, so I will communicate with PHP-FPM on this ports, creating a link to mariadb and naming my hostname.
I’m using the regular nginx alpine with some maps:
./nginx/nginx.conf to /etc/nginx/nginx.conf which is my nginx configuration
./nginx/app.vhost to /etc/nginx/conf.d/default.conf which is my website configuration with Jekyll falling back to wordpress
./logs/nginx to /var/log/nginx which will be my log directory
./wordpress.matbra.com/ to /var/www/wordpress.matbra.com which is the place where nginx can find wordpress website
./jekyll.matbra.com/ to /var/www/jekyll.matbra.com which is the place where nginx can find jekyll website
I’m also mapping ports 80 to 80 and 443 to 443 and create a link to PHP-FPM so nginx can communicate with fpm container.
No mistery here, regular mariadb image, with a mapping for data and some environment variables.
Because I’m not adding my website files to the image, I have created a command init.sh to remove website directory and clone website from git. There is a command called update-config.sh to update wp-config.php file with the correct environment variables.
With this I can easily spin up a new machine with my website structure.
I have been playing with Loopback, initially I was just declaring models and use in memory, but now I got to a point where I need to have a persistent database.
I couldn’t find how to keep my database synced with my models easily. I’m not sure if I’m not that familiar with Loopback yet, or if their documentation is not clear enough.
To create a script to sync your models with your database you can create a file under bin/ called autoupdate.js and add the following:
var path = require('path');
var app = require(path.resolve(__dirname, '../server/server'));
var ds = app.datasources.db;
if (err) throw err;
The code is pretty simple, it will fetch the app from server.js, grab the datasource and run the autoupate command. You could use automigrate, but this one will clean the database every time, so pay attention on this.
I think this will work for most of datasources, but if it doesn’t work for yours, drop me a line. I can try to help :D
PS: Loopback will not create migrations and do a proper job as Django, sometimes you can get to weird states, it seems Loopback works better with NoSQL databases.
I have a personal project which I’m using python with Django and django-storages to upload my static and media files to Amazon S3, because my media files have UUID and they’re not editable on my system I wanted to have a long expiration time on it, so I could save some bandwidth but I didn’t want this on the static files which are updated more regularly when I’m updating the system.
Most of resources refer to AWS_HEADERS but it didn’t work for me. It seems it is only for boto (not boto3) after looking into boto3 source code I discovered AWS_S3_OBJECT_PARAMETERS which works for boto3, but this is a system-wide setting, so I had to extend S3Boto3Storage.
So the code that solved my problem was:
If you’re using boto (not boto3) and you want to have specific parameters only for Media classes you could use
You also need to update your django-storages settings, pay attention to the class name, on boto 3 it is S3Boto3Storage on boto it doesn’t has the 3 after Boto.
I had to decide if I would keep Wordpress, or change to a different technology as Jekyll? Or what? I have thought a lot about this and in the end I decided to use Jekyll to be honest, why? Because using something new will motivate me to study, play with something new and work more.
Have decided to work with Jekyll, I had to think about my domain, because I didn’t want to break my old wordpress blog, I want to keep it alive as a record and keep it for SEO points, but how to keep both living together on an awesome way?
I thought the ideal would be to have something that tries to access the new website and if it is not found it should redirect to the old wordpress website. But how to redirect to the old blog only when a page is not found and complying with the http status code (ie: redirecting with 301).
After some documentation reading on nginx I found you can try to proxy to a server and if it fails redirect to a new one, it seems the ideal solution for now.
I have a nginx configuration file with multiple servers, first I have a nginx wordpress configuration, this server just adds PHP-FPM to process PHP files basically with my own custom domain.
If you want to build your Jekyll blog on your own server after a git push you can use git hooks. To do it, you can extend the Deploy after git push and add this tree lines (after rm -rf), to install dependencies and to build it as production environment.
I have created a _include/force_www.html file and I’m using jekyll.environment to load it, so I’m only loading it on production.