Which data sources can Redash connect to?
Most common SQL and NoSQL sources, including PostgreSQL, MySQL, BigQuery, Redshift, Databricks, MongoDB, Elasticsearch and Google Sheets. Add them under Settings → Data Sources with no redeployment.
Do I need to know SQL?
Whoever writes the queries does. Everyone else can open the dashboards, filter them and read them without touching SQL.
Is this Redash's hosted cloud plan?
No. It runs the open-source Redash stack inside your own AWS account or GCP project. There is no Redash Cloud or Databricks account involved.
How do I set up email and invite users?
SSH into the server, add your SMTP details to the environment file in /opt/redash, then restart with docker-compose down and docker-compose up -d. Invite teammates from Settings → Users.
Can I schedule queries and set alerts?
Yes. Any query can refresh on a schedule, and alerts can notify you by email, Slack, PagerDuty and other destinations when results meet a condition.
Which machine size should I choose?
t3.small on AWS, or e2-medium (2 vCPU, 4 GB RAM) with a 20 GB disk on Google Cloud. Choose a larger machine for heavy queries or many concurrent users.
How do I renew the SSL certificate?
Let's Encrypt certificates expire every 90 days. Re-run sudo bash /root/certificate_generate_standalone.sh on the server, or schedule it with cron.
Is Redash still maintained?
Yes, by its open-source community, though releases are slower than they were before Databricks acquired the project in 2020.