Não consegui fazer a instalação do Apache Airflow pelo passo a passo do Alura como está hoje. Portanto, procurei o próprio site da ferramenta para instalar o próprio passo a passo indicado neste site: https://airflow.apache.org/docs/apache-airflow/stable/start/local.html Eu executei no prompt de comando do Ubuntu exatamente:
# Airflow needs a home. `~/airflow` is the default, but you can put it
# somewhere else if you prefer (optional)
export AIRFLOW_HOME=~/airflow
# Install Airflow using the constraints file
AIRFLOW_VERSION=2.3.3
PYTHON_VERSION="$(python --version | cut -d " " -f 2 | cut -d "." -f 1-2)"
# For example: 3.7
CONSTRAINT_URL="https://raw.githubusercontent.com/apache/airflow/constraints-${AIRFLOW_VERSION}/constraints-${PYTHON_VERSION}.txt"
# For example: https://raw.githubusercontent.com/apache/airflow/constraints-2.3.3/constraints-3.7.txt
pip install "apache-airflow==${AIRFLOW_VERSION}" --constraint "${CONSTRAINT_URL}"
# The Standalone command will initialise the database, make a user,
# and start all components for you.
airflow standalone
# Visit localhost:8080 in the browser and use the admin account details
# shown on the terminal to login.
# Enable the example_bash_operator dag in the home pageUma vez que instalei a vers
