This role installs pev2 (PostgreSQL Explain Visualizer) alongside a
flask app to store and share EXPLAIN ANALYSE results.
Gunicorn is also installed to serve the flask app and make it production ready.
| Variable | Description | Example value |
|---|---|---|
| pev_fqdn | The host's fqdn | explain.cosium.com |
Launch this role with -e pev_update_now=true or -e global_update_now=true