Add pixelfed.org

README.org

@@ -30,6 +30,7 @@ This is a collection of notes on tech and other things. Intended audience: mostl
 - [[file:openssl.org][OpenSSL]]
 - [[file:packet-tracer.org][Packet Tracer]]
 - [[file:parallel.org][Parallel]]
+- [[file:pixelfed.org][Pixelfed]]
 - [[file:postgresql.org][PostgreSQL]]
 - [[file:prometheus.org][Prometheus]]
 - [[file:qcow2.org][QCOW2]]

pixelfed.org

@@ -0,0 +1,242 @@
+#+title: Pixelfed
+
+** Install Pixelfed on Debian (Bookworm)
+
+*** Prerequisites
+
+Install dependencies.
+
+#+BEGIN_SRC shell
+apt install -y php-bcmath php-curl exif php-gd php8.2-common php-intl php-json php-mbstring libcurl4-openssl-dev php-redis php-tokenizer php-xml php-zip php-pgsql php-fpm composer
+#+END_SRC
+
+Set the following upload limits for PHP processes.
+
+#+BEGIN_SRC ini
+post_max_size = 2G
+file_uploads = On
+upload_max_filesize = 2G
+max_file_uploads = 20
+max_execution_time = 1000
+#+END_SRC
+
+Create the PostgreSQL database:
+
+#+BEGIN_SRC shell
+sudo -u postgres psql
+#+END_SRC
+
+#+BEGIN_SRC sql
+CREATE USER pixelfed CREATEDB;
+CREATE DATABASE pixelfed;
+GRANT ALL PRIVILEGES ON DATABASE pixelfed TO pixelfed;
+\q
+#+END_SRC
+
+Create dedicated pixelfed user.
+
+#+BEGIN_SRC shell
+useradd -rU -s /bin/bash pixelfed
+#+END_SRC
+
+Configure PHP-FPM pool and socket.
+
+#+BEGIN_SRC shell
+cd /etc/php/8.2/fpm/pool.d/
+cp www.conf pixelfed.conf
+#+END_SRC
+
+Edit ~/etc/php/8.2/fpm/pool.d/pixelfed.conf~.
+
+#+BEGIN_SRC ini
+; use the username of the app-user as the pool name, e.g. pixelfed
+[pixelfed]
+user = pixelfed
+group = pixelfed
+; to use a tcp socket, e.g. if running php-fpm on a different machine than your app:
+;    (note that the port 9001 is used, since php-fpm defaults to running on port 9000;)
+;    (however, the port can be whatever you want)
+; listen = 127.0.0.1:9001;
+;    but it's better to use a socket if you're running locally on the same machine:
+listen = /run/php-fpm/pixelfed.sock
+listen.owner = caddy
+listen.group = caddy
+listen.mode = 0660
+; [...]
+#+END_SRC
+
+*** Installation
+
+**** Setup Pixelfed files
+
+Download the source from GitHub.
+
+#+BEGIN_SRC shell
+cd /usr/share/caddy
+git clone -b dev https://github.com/pixelfed/pixelfed.git pixelfed
+#+END_SRC
+
+Set correct permissions.
+
+#+BEGIN_SRC shell
+cd pixelfed
+chown -R pixelfed:pixelfed .
+find . -type d -exec chmod 755 {} \;
+find . -type f -exec chmod 644 {} \;
+#+END_SRC
+
+Become the pixelfed user.
+
+#+BEGIN_SRC shell
+su - pixelfed
+#+END_SRC
+
+Initialize PHP dependencies.
+
+#+BEGIN_SRC shell
+composer update
+composer install --no-ansi --no-interaction --optimize-autoloader
+#+END_SRC
+
+**** Configure environment variables
+
+#+BEGIN_SRC shell
+cp .env.example .env
+#+END_SRC
+
+Edit ~/usr/share/caddy/pixelfed/.env~.
+
+#+BEGIN_SRC shell
+APP_NAME="hyperreal's Pixelfed"
+APP_DEBUG="false"
+APP_URL="https://pixelfed.hyperreal.coffee"
+APP_DOMAIN="pixelfed.hyperreal.coffee"
+ADMIN_DOMAIN="pixelfed.hyperreal.coffee"
+SESSION_DOMAIN="pixelfed.hyperreal.coffee"
+DB_CONNECTION=pgsql
+DB_HOST=localhost
+DB_PORT=5432
+DB_DATABASE=pixelfed
+DB_USERNAME=pixelfed
+DB_PASSWORD=<password>
+REDIS_HOST=localhost
+REDIS_PORT=6379
+MAIL_FROM_ADDRESS=onboarding@resend.dev
+MAIL_FROM_NAME=Pixelfed
+MAIL_ENCRYPTION=tls
+MAIL_DRIVER=smtp
+MAIL_HOST=smtp.resend.com
+MAIL_PORT=465
+MAIL_USERNAME=resend
+MAIL_PASSWORD=<resend API key>
+ACTIVITY_PUB=true
+AP_REMOTE_FOLLOW=true
+#+END_SRC
+
+**** Setting up services
+
+These commands should only be run one time.
+
+#+BEGIN_SRC shell
+php artisan key:generate
+#+END_SRC
+
+Link the ~storage/~ directory to the application.
+
+#+BEGIN_SRC shell
+php artisan storage:link
+#+END_SRC
+
+Run database migrations.
+
+#+BEGIN_SRC shell
+php artisan migrate --force
+#+END_SRC
+
+#+BEGIN_QUOTE
+If the above command fails due to insufficient privileges, then the pixelfed database user needs permission to create tables in the public schema. When we created the database, we ran ~GRANT ALL PRIVILEGES ON DATABASE pixelfed TO pixelfed;~ in the psql shell. This granted the pixelfed database user privileges on the database /itself/, not on things within the database. To fix this, the pixelfed database user needs to /own/ the database and all within it, so go back to the psql shell and run ~ALTER DATABASE pixelfed OWNER TO pixelfed;~
+
+See [[https://anonoverflow.hyperreal.coffee/questions/74110708/postgres-15-permission-denied-for-schema-public]]
+#+END_QUOTE
+
+To enable ActivityPub federation:
+
+#+BEGIN_SRC shell
+php artisan instance:actor
+#+END_SRC
+
+To have routes cached, run the following commands now, and whenever the source code changes or if you change routes.
+#+BEGIN_SRC shell
+php artisan route:cache
+php artisan view:cache
+#+END_SRC
+
+Run this command whenever you change the ~.env~ file for the changes to take effect.
+
+#+BEGIN_SRC shell
+php artisan config:cache
+#+END_SRC
+
+Use Laravel Horizon for job queueing.
+
+#+BEGIN_SRC shell
+php artisan horizon:install
+php artisan horizon:publish
+#+END_SRC
+
+Create a systemd service unit for Pixelfed task queueing.
+
+#+BEGIN_SRC systemd
+[Unit]
+Description=Pixelfed task queueing via Laravel Horizon
+After=network.target
+Requires=postgresql
+Requires=php8.2-fpm
+Requires=redis-server
+Requires=caddy
+
+[Service]
+Type=simple
+ExecStart=/usr/bin/php /usr/share/caddy/pixelfed/artisan horizon
+User=pixelfed
+Restart=on-failure
+
+[Install]
+WantedBy=multi-user.target
+#+END_SRC
+
+Use Cron to schedule periodic tasks. As the pixelfed user, run ~crontab -e~.
+
+#+BEGIN_SRC shell
+ * * * * * /usr/bin/php /usr/share/caddy/pixelfed/artisan schedule:run >> /dev/null 2>&1
+#+END_SRC
+
+Create a Caddyfile that translates HTTP web requests to PHP workers.
+
+#+BEGIN_SRC caddy
+pixelfed.hyperreal.coffee {
+    root * /usr/share/caddy/pixelfed/public
+
+    header {
+        X-Frame-Options "SAMEORIGIN"
+        X-XSS-Protection "1; mode=block"
+        X-Content-Type-Options "nosniff"
+    }
+
+    php_fastcgi unix//run/php/php-fpm.sock
+    file_server
+}
+#+END_SRC
+
+** Updating Pixelfed
+
+#+BEGIN_SRC shell
+sudo su - pixelfed
+cd /usr/share/caddy/pixelfed
+git reset --hard
+git pull origin dev
+composer install
+php artisan config:cache
+php artisan route:cache
+php artisan migrate --force
+#+END_SRC