Development Environment Setup and Configuration
Petros Kayange
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Posted May 1, 2025
Set up and configured a development environment with necessary tools and services.
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Apr 1, 2021 - Dec 22, 2021
install pip
sudo apt install python3-pip
install env
sudo apt install python3-virtualenv pip3 install virtualenv
cd to project directory and create a project env using below command
virtualenv env
TO activate env
source env/bin/activate
install mysql package
sudo apt-get install libmysqlclient-dev
Other dependace
sudo apt-get install libpq-dev
install all requirements
pip install -r requirements.txt
install postgres
sudo apt install postgresql-10 postgresql-contrib-10
To create user and database
sudo -u postgres psql create database mydb; sudo -u postgres createuser root -P grant all privileges on database mydb to myuser;
migrations
python manage.py makemigrations celery_results python3 manage.py makemigrations python3 manage.py migrate
for missing sessions (Run these if you are having problems with migrations)
python manage.py migrate --fake sessions zero python manage.py migrate sessions
create user
python3 manage.py createsuperuser
To start the application
python3 manage.py runserver
TO create dump
pg_dump -U username -h localhost databasename > sqlfile.sql
TO load dump
psql -h hostname -p port_number -U username -f your_file.sql databasename
Permission dennied during ping
To temporarily set this parameter, allowing all users to create ICMP sockets (until next boot):
sudo sysctl net.ipv4.ping_group_range='0 4294967295' Some systems (e.g. Debian) may have issues with this, returning:
sysctl: setting key "net.ipv4.ping_group_range": Invalid argument In this case, try:
sudo sysctl net.ipv4.ping_group_range='0 2147483647'
To permanently set this parameter: echo "# allow all users to create icmp sockets\n net.ipv4.ping_group_range=0 2147483647" | sudo tee -a /etc/sysctl.d/ping_group.conf
Install celery server
sudo apt-get install rabbitmq-server
To create celery deamon
The file that you have referred in the link https://github.com/celery/celery/blob/3.0/extra/generic-init.d/celeryd needs to be copied in your /etc/init.d folder with the name celeryd
Then you need to create a configuration file in the folder /etc/default with the name celeryd that is used by the above script. This configuration file basically defines certain variables and paths that are used by the above script. Here's an example configuration.
This link Generic init scripts explains the process and can be used for reference
TO start flower
celery -A EMR_STATS_API flower
To delete all tasks
celery -A EMR_STATS_API purge
To start celery without celery deamon but with cronjobs
@reboot cd /var/www/EMR_STATS_API && env/bin/celery -A EMR_STATS_API worker -l INFO --pool=gevent --concurrency=100 --queues=get_remote_data --hostname=get_remote_data-worker@%h >> /var/www/EMR_STATS_API/logs/celery_logs/get_remote_data.log 2>&1
@reboot cd /var/www/EMR_STATS_API && env/bin/celery -A EMR_STATS_API worker -l INFO --pool=gevent --concurrency=100 --queues=send_message --hostname=send_message-worker@%h >> /var/www/EMR_STATS_API/logs/celery_logs/send_message.log 2>&1
@reboot cd /var/www/EMR_STATS_API && env/bin/celery -A EMR_STATS_API worker -l INFO --queues=get_devices --hostname=get_devices-worker@%h >> /var/www/EMR_STATS_API/logs/celery_logs/get_devices.log 2>&1
@reboot cd /var/www/EMR_STATS_API && env/bin/celery -A EMR_STATS_API worker -l INFO --queues=copy_dumps --hostname=copy_dumps-worker@%h >> /var/www/EMR_STATS_API/logs/celery_logs/copy_dumps.log 2>&1
@reboot cd /var/www/EMR_STATS_API && env/bin/celery -A EMR_STATS_API worker -l INFO --queues=create_dump --hostname=create_dump-worker@%h >> /var/www/EMR_STATS_API/logs/celery_logs/create_dump.log 2>&1
debug postgres
/usr/lib/postgresql/10/bin/postgres -d 3 -D /var/lib/postgresql/10/main -c config_file=/etc/postgresql/10/main/postgresql.conf