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ClimateSERV 2.0

Django: 3.x License: MIT SERVIR: Global DOI

This tool allows development practitioners, scientists/researchers, and government decision-makers to visualize and download historical rainfall data, vegetation condition data, and 180-day forecasts of rainfall and temperature to improve understanding of, and make improved decisions for, issues related to agriculture and water availability. These data can be accessed directly through the web application or can be accessed through the applications API using ClimateSERVpy in your python application. You can get the ClimateSERVpy python package using pip

pip install climateserv

or conda

conda install -c servir climateserv

Setup and Installation

Required

Environment

These instructions are written for a linux environment. If you are installing on a different OS you will have to alter pathing and pathing variables.

We highly recommend following the structure we have in place for the application, which is:

/cserv2/django_app/ClimateSERV2

Following these directions should help to accomplish this effectively and ensure your application runs successfully.

mkdir -p /cserv2/django_app
mkdir -p /cserv2/tmp/logs
cd /cserv2/django_app
git clone git@github.com:SERVIR/ClimateSERV2.git

Due to python package requirements we found it best to use a conda environment for ClimateSERV.

We use two environments, one for the database, and the other for the application.

To setup the database in a conda environment:

mkdir -p /cserv2/python_environments/conda/anaconda3/envs/
conda create --prefix=/cserv2/python_environments/conda/anaconda3/envs/psqlenv python=3.9.5
conda create --name psqlenv python=3.9.5

conda activate psqlenv

conda install -y -c conda-forge postgresql

cd /cserv2
mkdir db
cd db

initdb -D local_climateserv

pg_ctl -D local_climateserv -l logfile start

createuser --encrypted --pwprompt csadmin

createdb --owner=csadmin cs2_db

conda deactivate

{
  "NAME": "cs2_db",
  "USER": "csadmin",
  "PASSWORD": "PASSWORD_YOU_SET_FOR_THIS_USER",
  "HOST": "127.0.0.1",
  "SECRET_KEY": "Your_super_secret_key_for_django"
  "DEBUG": "False"
}

To setup the application in a conda environment

With conda installed you should be able to run the following command to create the correct python environment, then activate it.

conda create --prefix=/cserv2/python_environments/conda/anaconda3/envs/climateserv2 python=3.9.5
conda activate ClimateSERV2

You will need to cd to your project directory, then run the following two installation commands. Be sure to complete the installations before moving on, they can take a little time, be patient.

pip install -r requirements.txt
conda install --file conda_requirements.txt

Upon completion, you will need to add one more global lib to broker the message queues. To do this use

sudo apt-get install rabbitmq-server
sudo systemctl enable rabbitmq-server
sudo service rabbitmq-server start

Now we can create a service and config file to start celery which is our task queue with focus on real-time processing. You will need to create two files, one at /etc/systemd/system/celery.service and the other at /etc/conf.d/celery In celery.service you will need the following (you may need to adjust paths)

[Unit]
Description=Celery Service
After=rabbitmq-server.service network.target
Requires=rabbitmq-server.service
RuntimeDirectory=celery 


[Service]
Type=forking
User=www-data
Group=www-data
EnvironmentFile=/etc/conf.d/celery
WorkingDirectory=/cserv2/django_app/ClimateSERV2
ExecStart=/bin/bash -c '${CELERY_BIN} -A $CELERY_APP multi start $CELERYD_NODES \
    --pidfile=${CELERYD_PID_FILE} --logfile=${CELERYD_LOG_FILE} \
    --loglevel="${CELERYD_LOG_LEVEL}" $CELERYD_OPTS' 
ExecStop=/bin/sh -c '${CELERY_BIN} multi stopwait $CELERYD_NODES \
    --pidfile=${CELERYD_PID_FILE} --logfile=${CELERYD_LOG_FILE} \
    --loglevel="${CELERYD_LOG_LEVEL}"'
ExecReload=/bin/sh -c '${CELERY_BIN} -A $CELERY_APP multi restart $CELERYD_NODES \
    --pidfile=${CELERYD_PID_FILE} --logfile=${CELERYD_LOG_FILE} \
    --loglevel="${CELERYD_LOG_LEVEL}" $CELERYD_OPTS'
Restart=always

[Install]
WantedBy=multi-user.target

And in /etc/conf.d/celery you can paste

CELERYD_NODES="w1 w2 w3"
DJANGO_SETTINGS_MODULE="climateserv2.settings"

# Absolute or relative path to the 'celery' command:
CELERY_BIN="/cserv2/python_environments/conda/anaconda3/envs/climateserv2/bin/celery"

# App instance to use
CELERY_APP="climateserv2"
CELERYD_MULTI="multi"

# Extra command-line arguments to the worker
CELERYD_OPTS="--time-limit=300 --concurrency=8"
CELERYD_PID_FILE="/var/run/celery/%n.pid"
CELERYD_LOG_FILE="/var/log/celery/%n%I.log"

Celery uses a temp directory that will need to be automatically created on reboot, to do this create /usr/lib/tmpfiles.d and paste the following inside:

D /var/run/celery 0777 root root - -

Create this directory now manually, along with a couple others:

sudo mkdir /var/run/celery 
sudo chmod 777 /var/run/celery -R

sudo mkdir /opt/celery
sudo chmod 777 /opt/celery

sudo mkdir /var/log/celery
sudo chmod 777 /var/log/celery -R

You should be able to enable and start celery now

sudo chmod 644 /etc/systemd/system/celery.service
sudo systemctl daemon-reload
sudo systemctl enable celery
sudo service celery restart

you should be able to begin application setup. Start with

python manage.py migrate

This will take care of setting up the database. Next you will need a superuser, follow the prompts when you run

python manage.py createsuperuser

Application specific variables and config files:

You will need to add some paths and dataset information as follows:

--- TBD ---

At this point you should be able to start the application. From the root directory you can run the following two commands

python manage.py runserver

Of course running the application in this manor is only for development, we recommend installing this application on a server and serving it through nginx using gunicorn. To do this you will need to have both installed on your server. There are enough resources explaining in depth how to install them, so we will avoid duplicating this information. We recommend adding a service to start the application by creating a .service file located at /etc/systemd/system. We named ours climateserv2.service The service file will contain the following. If you chose to follow a different structure you will have to update the paths.

[Unit]
Description=ClimateSERV daemon
After=network.target

[Service]
User=nginx
Group=nginx
SocketUser=nginx
WorkingDirectory=/cserv2/django_app/ClimateSERV2/climateserv2
accesslog = "/var/log/cserv2/gunicorn.log"
errorlog = "/var/log/cserv2/gunicornerror.log"
ExecStart=/cserv2/python_environments/conda/anaconda3/envs/climateserv2/bin/gunicorn --timeout 60 --workers 5 --pythonpath '/cserv2/django_app/ClimateSERV2,/cserv2/python_environments/conda/anaconda3/envs/climateserv2/lib/python3.9/site-packages' --bind unix:/cserv2/socks/climateserv.sock wsgi:application  

[Install]
WantedBy=multi-user.target

NOTE: Directory for the sock must be created and owned by nginx user.

You should now be able to start the application using the service, however we will set up some alias commands to make things a bit easier, as permissions sometimes get in the way. To create these you can create a new file located at /etc/profile.d/ and name it climateserv_alias.sh. Add the alias commands you would like from below. If you chose to use a different structure for the application, you will have to update the paths below.

Suggested server aliases

alias cs2='conda activate ClimateSERV2'

alias d='conda deactivate'

alias so='sudo chown nginx /cserv2/django_app/ClimateSERV2 -R; sudo chown -R nginx /cserv2/tmp; sudo chmod 777 /cserv2/tmp -R; sudo chmod 777 /var/log/cserv2/climateserv2.log; sudo chown -R nginx /var/log/cserv2'

alias uo='sudo chown -R ${USER} /cserv2/django_app/ClimateSERV2; sudo chown -R ${USER} /cserv2/tmp; sudo chmod 777 /cserv2/tmp -R; sudo chmod 777 /var/log/cserv2/climateserv2.log; sudo chown -R ${USER} /var/log/cserv2'

alias cstart='sudo service climateserv2 restart; sudo service nginx restart; so'

alias cstop='sudo pkill -f gunicorn; sudo service nginx stop'

alias chome='cd /cserv2/django_app/ClimateSERV2'

alias crestart='cstop; cstart;'

Contact

Software Developers

Systems Engineering

Science Team

License and Distribution

ClimateSERV 2.0 is distributed by SERVIR under the terms of the MIT License. See LICENSE in this directory for more information.

Privacy & Terms of Use

ClimateSERV abides to all of SERVIR's privacy and terms of use as described at https://servirglobal.net/Privacy-Terms-of-Use.

Funding

Funding for this work was provided through SERVIR, a joint NASA- and USAID-led program, particularly through the Earth Science Branch at NASA Marshall Space Flight Center and the cooperative agreement 80MSFC17M0022 between NASA and USRA.