INSTALL

# INSTALL / BUILD instructions for Apache Airflow

This ia a generic installation method that requires a number of dependencies to be installed.

Depending on your system you might need different prerequisites, but the following
systems/prerequisites are known to work:

Linux (Debian Buster and Linux Mint Tricia):

sudo apt install build-essentials python3.6-dev python3.7-dev python-dev openssl \
                 sqlite sqlite-dev default-libmysqlclient-dev libmysqld-dev postgresq

MacOS (Mojave/Catalina):

brew install sqlite mysql postgresql

# [required] fetch the tarball and untar the source move into the directory that was untarred.

# [optional] run Apache RAT (release audit tool) to validate license headers
# RAT docs here: https://creadur.apache.org/rat/. Requires Java and Apache Rat
java -jar apache-rat.jar -E ./.rat-excludes -d .

# [optional] Airflow pulls in quite a lot of dependencies in order
# to connect to other services. You might want to test or run Airflow
# from a virtual env to make sure those dependencies are separated
# from your system wide versions

python3 -m venv PATH_TO_YOUR_VENV
source PATH_TO_YOUR_VENV/bin/activate

# [required] building and installing by pip (preferred)
pip install .

NOTE!

On 30th of November 2020, new version of PIP (20.3) has been released with a new, 2020 resolver.
This resolver does not yet work with Apache Airflow and might leads to errors in installation -
depends on your choice of extras. In order to install Airflow you need to either downgrade
pip to version 20.2.4 ``pip upgrade --pip==20.2.4`` or, in case you use Pip 20.3, you need to add option
``--use-deprecated legacy-resolver`` to your pip install command.


# or you can install it directly via setup.py
python setup.py install


# You can also install recommended version of the dependencies by using
# constraint-python<PYTHON_MAJOR_MINOR_VERSION>.txt files as constraint file. This is needed in case
# you have problems with installing the current requirements from PyPI.
# There are different constraint files for different python versions and you shopuld choose the
# version of constraints specific for your version.
# For example:

pip install . \
  --constraint "https://raw.githubusercontent.com/apache/airflow/constraints-1.10.14/constraints-3.6.txt"


.. note::
   On 30th of November 2020, new version of PIP (20.3) has been released with a new, 2020 resolver.
   This resolver does not yet work with Apache Airflow and might leads to errors in installation -
   depends on your choice of extras. In order to install Airflow you need to either downgrade
   pip to version 20.2.4 ``pip upgrade --pip==20.2.4`` or, in case you use Pip 20.3, you need to add option
   ``--use-deprecated legacy-resolver`` to your pip install command.

# You can also install Airflow with extras specified. The list of available extras:
# START EXTRAS HERE

all, all_dbs, amazon, apache.atlas, apache.cassandra, apache.druid, apache.hdfs, apache.hive,
apache.pinot, apache.presto, apache.webhdfs, async, atlas, aws, azure, azure_blob_storage,
azure_container_instances, azure_cosmos, azure_data_lake, azure_secrets, cassandra, celery, cgroups,
cloudant, cncf.kubernetes, crypto, dask, databricks, datadog, devel, devel_all, devel_azure,
devel_ci, devel_hadoop, doc, docker, druid, elasticsearch, emr, gcp, gcp_api, github_enterprise,
google, google_auth, grpc, hashicorp, hdfs, hive, jdbc, jira, kerberos, kubernetes, ldap,
microsoft.azure, microsoft.mssql, microsoft.winrm, mongo, mssql, mysql, oracle, papermill, password,
pinot, postgres, presto, qds, rabbitmq, redis, s3, salesforce, samba, segment, sendgrid, sentry,
slack, snowflake, ssh, statsd, vertica, virtualenv, webhdfs, winrm

# END EXTRAS HERE

# For installing Airflow in development environments - see CONTRIBUTING.rst