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If anyone ever uses this repo...

...You should tell me so I can plan accordingly! Because I'm not writing any data migration scripts (for server database, for client indexedDB, for service-worker cache) and I do the changes manually, but that's not very practical for anyone else but me. So if you have the project running and try to update it after some changes, stuff might break.

Commands

command description
npm run db runs necessary prisma scripts after a change in schema
npm run spawn starts a process in pm2 after a build (if a process already exists, you should pm2 delete soft-serve-tunes before)
npm run wake server cold start is quite long (because we're verifying all files in case anything changed while the server was off) ; this command starts the cold-start process without having to open the app

RESOURCES

Deploy to raspberry

update raspbian

access rpi

freebox > box settings > ports >

  • 22 > 22
  • if terminal isn't happy because it's a new unknown source ssh-keygen -R [host]

app

  • install node, upgrade to 18 
    sudo su
curl -fsSL https://deb.nodesource.com/setup_18.x | bash -
sudo apt install nodejs # or follow CLI instructions
  • install git 
    sudo apt install git
  • git clone the project 
    git clone https://github.com/Sheraff/soft-serve-tunes.git
  • some binaries need chmoding 
    chmod u+rx .src/server/persistent/bin/fpcalc/fpcalc-darwin
chmod u+rx .src/server/persistent/bin/fpcalc/fpcalc-linux
    also, I could not find a self-contained fpcalc for linux, so we need to install 250Mo of dependencies (which will include fpcalc itself) (see server/bin readme for more information) 
    apt-get install libchromaprint-tools
  • install postgresql (https://pimylifeup.com/raspberry-pi-postgresql/) 
    sudo apt install postgresql
createuser pi -P --interactive # will determine the user:password to use in the .env file
psql
CREATE DATABASE pi;
exit
exit
  • install npm i
  • configure .env music folder
  • build (put pi on a fan, it's gonna heat up) npm run build
  • rm prisma/db.sqlite
  • npm run db
  • npm start

ports

freebox > static local IP for server

  • freebox settings > advanced > DHCP > static
  • assign raspberry pi to static IP configure DynDNS w/ OVH + freebox freebox > box settings > ports >
  • 443 > 3000 (https)
  • 80 > 3000 (http)
  • 3001 > 3001 (ws) ??useless??
  • site should be accessible over HTTP

ssl certificates

  • apt-get install apache2

  • freebox ports should be set to their default value (443 > 443, 80 > 80)

  • install cert-bot by let's encrypt (https://certbot.eff.org/instructions?ws=apache&os=debianbuster)

    sudo apt install snapd
sudo snap install core; sudo snap refresh core
sudo snap install --classic certbot
sudo ln -s /snap/bin/certbot /usr/bin/certbot
sudo certbot --apache

  • in /etc/apache2/sited-enabled, edit the .conf files (see example below) so that

    • all HTTP traffic is redirected to HTTPS
    • incoming 443 and outgoing 3000 go to the correct destination
    • HTTP upgrade requests go to the correct scheme http>ws and ws>http

  • make sure apache version is >= 2.4 (apache2 -v)

  • enable some apache modules

    a2enmod proxy
a2enmod proxy_http
a2enmod proxy_wstunnel
systemctl restart apache2

enable http2

cp /etc/apache2/mods-available/http2.load /etc/apache2/mods-enabled/http2.load
cp /etc/apache2/mods-available/http2.conf /etc/apache2/mods-enabled/http2.conf
systemctl restart apache2

remove apache headers / server signature

  • edit the security config file 
    nano /etc/apache2/conf-enabled/security.conf
  • Replace the 2 following settings: 
    ServerTokens Prod # remove `Server` header w/ OS version and apache version
ServerSignature Off # hide information from server generated pages (e.g. Internal Server Error).
  • restart apache 
    systemctl restart apache2

process manager

  • install pm2 npm install pm2@latest -g
  • spawn the server w/ npm run spawn or pm2 start npm --time --name soft-serve-tunes -- start
  • subsequent re-start can be done w/ pm2 reload 0 or pm2 reload soft-serve-tunes
  • auto-start pm2 on reboot: 
    pm2 startup
pm2 save

If using wifi

Prevent connection "timeout after idle"

The raspberry pi comes with a power management utility on its wifi chip. This results in connections that are very slow / timeout if the raspberry hasn't connected to the network in a while. This forum post helped.

  • observe the "Power Management" setting w/ iwconfig 
    wlan0
    Power Management:on
  • disable power management sudo iwconfig wlan0 power off
  • disable power management permanently:
    • sudo nano /etc/rc.local
    • add iwconfig wlan0 power off to the file

If using ethernet

Disable wifi

Disabling the wifi can boost raspberry performance. This article helped.

sudo nano /boot/config.txt

add dtoverlay=disable-wifi to the config, under [all]

Intranet streaming

If you want to stream directly server-to-device without going through the internet when both are on the same network, you need to setup a few more things:

  • Create a DNS A record that resolves to the static IP assigned to the raspberry pi server
  • Generate a certificate by using a DNS challenge (since the domain cannot be accessed outside of your network, certificate authority can only access the DNS record): https://www.digitalocean.com/community/tutorials/how-to-acquire-a-let-s-encrypt-certificate-using-dns-validation-with-acme-dns-certbot-on-ubuntu-18-04 
    wget https://github.com/joohoi/acme-dns-certbot-joohoi/raw/master/acme-dns-auth.py
chmod +x acme-dns-auth.py
nano acme-dns-auth.py # change the shebang to use python3 instead of python
sudo mv acme-dns-auth.py /etc/letsencrypt/ # where letsencrypt can find it
sudo certbot certonly --manual --manual-auth-hook /etc/letsencrypt/acme-dns-auth.py --preferred-challenges dns --debug-challenges -d local.my-domain.com
# certbot will prompt you to go and register a CNAME DNS redirection from your domain
# to theirs, so they can verify that you do own the domain, do that, and check that it
# is correctly registered with `dig _acme-challenge.local.my-domain.com`
sudo certbot renew --dry-run # make sure the new cert is included in the auto-renew rotation
  • enable apache proxy with new local host and newly generated certificates (in a .conf file inside /etc/apache2/sites-enabled) 
    <VirtualHost *:443>
      ProxyPreserveHost On
      ProxyRequests Off
      # name doesn't matter (unless self-signed certificate wasn't wildcard but on a specific domain)
      ServerName foobar.com
      ServerAlias *

      RewriteEngine On
      RewriteCond %{HTTP:Upgrade} =websocket [NC]
      RewriteRule /(.*)           ws://localhost:3001/$1 [P,L]
      RewriteCond %{HTTP:Upgrade} !=websocket [NC]
      RewriteRule /(.*)           http://localhost:3000/$1 [P,L]

      ProxyPass / http://localhost:3000/
      ProxyPassReverse / http://localhost:3000/

      ErrorLog ${APACHE_LOG_DIR}/error.log
      CustomLog ${APACHE_LOG_DIR}/access.log combined

      # self signed
      SSLCertificateFile /etc/letsencrypt/live/local.my-domain.com/fullchain.pem
      SSLCertificateKeyFile /etc/letsencrypt/live/local.my-domain.com/privkey.pem
      Include /etc/letsencrypt/options-ssl-apache.conf
</VirtualHost>
  • not necessary, but you might also want to force http connections to upgrade to https 
    # in the *:80 VirtualHost
RewriteCond %{SERVER_NAME} =local.my-domain.com
RewriteRule ^ https://%{SERVER_NAME}%{REQUEST_URI} [END,NE,R=permanent]
  • restart apache 
    systemctl restart apache2
  • add the local host to .env file 
    NEXT_PUBLIC_INTRANET_HOST=https://local.my-domain.com

example .conf files

/etc/apache2/sites-enabled/000-default.conf

<VirtualHost *:80>
   ErrorLog ${APACHE_LOG_DIR}/error.log
   CustomLog ${APACHE_LOG_DIR}/access.log combined

   # added by certbot
   RewriteEngine on
   RewriteCond %{SERVER_NAME} =my-domain.com
   RewriteRule ^ https://%{SERVER_NAME}%{REQUEST_URI} [END,NE,R=permanent]

   # if we want intranet streaming
   RewriteCond %{SERVER_NAME} =local.my-domain.com
   RewriteRule ^ https://%{SERVER_NAME}%{REQUEST_URI} [END,NE,R=permanent]
</VirtualHost>

/etc/apache2/sites-enabled/000-default-le-ssl.conf (created by certbot)

<IfModule mod_ssl.c>
   <VirtualHost *:443>

      ProxyPreserveHost On
      ProxyRequests Off
      ServerName my-domain.com

      RewriteEngine On
      RewriteCond %{HTTP:Upgrade} =websocket [NC]
      RewriteRule /(.*)           ws://localhost:3001/$1 [P,L]
      RewriteCond %{HTTP:Upgrade} !=websocket [NC]
      RewriteRule /(.*)           http://localhost:3000/$1 [P,L]

      ProxyPass / http://localhost:3000/
      ProxyPassReverse / http://localhost:3000/

      ErrorLog ${APACHE_LOG_DIR}/error.log
      CustomLog ${APACHE_LOG_DIR}/access.log combined

      # certbot
      ServerName my-domain.com
      SSLCertificateFile /etc/letsencrypt/live/my-domain.com/fullchain.pem
      SSLCertificateKeyFile /etc/letsencrypt/live/my-domain.com/privkey.pem
      Include /etc/letsencrypt/options-ssl-apache.conf
   </VirtualHost>

   # if we want intranet streaming
   <VirtualHost *:443>
        ProxyPreserveHost On
        ProxyRequests Off
        # name doesn't matter (unless self-signed certificate wasn't wildcard but on a specific domain)
        ServerName foobar.com
        ServerAlias *

        RewriteEngine On
        RewriteCond %{HTTP:Upgrade} =websocket [NC]
        RewriteRule /(.*)           ws://localhost:3001/$1 [P,L]
        RewriteCond %{HTTP:Upgrade} !=websocket [NC]
        RewriteRule /(.*)           http://localhost:3000/$1 [P,L]

        ProxyPass / http://localhost:3000/
        ProxyPassReverse / http://localhost:3000/

        ErrorLog ${APACHE_LOG_DIR}/error.log
        CustomLog ${APACHE_LOG_DIR}/access.log combined

        # self signed
        SSLCertificateFile /etc/letsencrypt/live/local.my-domain.com/fullchain.pem
        SSLCertificateKeyFile /etc/letsencrypt/live/local.my-domain.com/privkey.pem
        Include /etc/letsencrypt/options-ssl-apache.conf
   </VirtualHost>
</IfModule>

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Self hosted music server on raspberry pi

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raspberry-pi typescript service-worker progressive-web-app postgresql prisma trpc create-t3-app

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