Deployment

Custom start script

cp /home/django/project/.ssh/id_rsa /home/django/.ssh

DEBIAN_FRONTEND=noninteractive
sudo ln -fs /usr/share/zoneinfo/Europe/Zurich /etc/localtime

sudo apt-get update
sudo apt-get -y install software-properties-common
sudo add-apt-repository -y ppa:deadsnakes/ppa && echo added new ppa || echo failed to add new ppa
sudo apt-get update
sudo apt-get -y install python3.11 && echo installed python 3.11 || echo failed to install python 3.11
pip install pipenv && echo installed pipenv || echo failed to install pipenv
ssh-keyscan -H github.com >> ~/.ssh/known_hosts && echo added github to known_hosts || echo failed to add github as known host

sudo cp /home/django/project/gunicorn /etc/init.d

/home/django/project/deploy.sh && echo deployed successfully || echo failed to deploy

Deploy script

#!/bin/bash

logfile="/home/django/project/deploy.log"
project_root="/home/django/project/neurona"
api_dir="$project_root/api"
frontend_dir="$project_root/frontend"

log(){
	echo `date` : $1 >> $logfile
	echo $1
}

log "deploying..."

# update project from git
cd $project_root
git pull || log "ERROR : Could not pull repository !"

# update frontend
cd $frontend_dir
npm install
npm run build

# update backend
cd $api_dir
pipenv install
pipenv requirements > requirements.txt
pip install -r requirements.txt
sudo service gunicorn restart

log "deployment done"

GUnicorn service script

source : https://github.com/fhd/init-script-template

#!/bin/sh
### BEGIN INIT INFO
# Provides:
# Required-Start:    $remote_fs $syslog
# Required-Stop:     $remote_fs $syslog
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: Start daemon at boot time
# Description:       Enable service provided by daemon.
### END INIT INFO

dir="/home/django/project/neurona/api"
cmd="/usr/local/bin/gunicorn -w 3 --error-logfile /home/django/project/gunicorn-logs.log neurona.wsgi"
user="django"

name=`basename $0`
pid_file="/var/run/$name.pid"
stdout_log="/var/log/$name.log"
stderr_log="/var/log/$name.err"

get_pid() {
    cat "$pid_file"
}

is_running() {
    [ -f "$pid_file" ] && ps -p `get_pid` > /dev/null 2>&1
}

case "$1" in
    start)
    if is_running; then
        echo "Already started"
    else
        echo "Starting $name"
        cd "$dir"
        if [ -z "$user" ]; then
            sudo $cmd >> "$stdout_log" 2>> "$stderr_log" &
        else
            sudo -u "$user" $cmd >> "$stdout_log" 2>> "$stderr_log" &
        fi
        echo $! > "$pid_file"
        if ! is_running; then
            echo "Unable to start, see $stdout_log and $stderr_log"
            exit 1
        fi
    fi
    ;;
    stop)
    if is_running; then
        echo -n "Stopping $name.."
        kill `get_pid`
        for i in 1 2 3 4 5 6 7 8 9 10
        # for i in `seq 10`
        do
            if ! is_running; then
                break
            fi

            echo -n "."
            sleep 1
        done
        echo

        if is_running; then
            echo "Not stopped; may still be shutting down or shutdown may have failed"
            exit 1
        else
            echo "Stopped"
            if [ -f "$pid_file" ]; then
                rm "$pid_file"
            fi
        fi
    else
        echo "Not running"
    fi
    ;;
    restart)
    $0 stop
    if is_running; then
        echo "Unable to stop, will not attempt to start"
        exit 1
    fi
    $0 start
    ;;
    status)
    if is_running; then
        echo "Running"
    else
        echo "Stopped"
        exit 1
    fi
    ;;
    *)
    echo "Usage: $0 {start|stop|restart|status}"
    exit 1
    ;;
esac

exit 0