Connect to your PostgreSQL server instance using the following command:
`sudo -u postgres psql`
Select the database you would like to connect to Chartio:
`\c databasename;`
Create a new role for your Chartio read-only user:
`CREATE ROLE chartio_read_only_user LOGIN PASSWORD 'secure_password';`
Grant the necessary privileges for the new user to connect to your
database:
`GRANT CONNECT ON DATABASE exampledb TO chartio_read_only_user;` `GRANT USAGE ON SCHEMA public TO chartio_read_only_user;`
Run the following command to generate the queries that will grant select
access to your new user:
`SELECT 'GRANT SELECT ON '||schemaname||'."'||tablename||'" TO`
`chartio_read_only_user;' FROM pg_tables WHERE schemaname IN`
`('public') ORDER BY schemaname, tablename;`You will see a list of GRANT statements similar to the following:
Copy the GRANT statements generated by the query and then paste them
into your terminal window. To restrict access to a subset of tables only run the GRANT statements for the corresponding tables. To limit access to specific columns please see the knowledgebase article on limiting PostgreSQL access using schema.
`GRANT SELECT ON public."album" TO chartio_read_only_user;` `GRANT SELECT ON public."artist" TO chartio_read_only_user;` `GRANT SELECT ON public."customer" TO chartio_read_only_user;` `GRANT SELECT ON public."employee" TO chartio_read_only_user;` `GRANT SELECT ON public."genre" TO chartio_read_only_user;` `GRANT SELECT ON public."invoice" TO chartio_read_only_user;` `GRANT SELECT ON public."invoiceline" TO chartio_read_only_user;` `GRANT SELECT ON public."mediatype" TO chartio_read_only_user;` `GRANT SELECT ON public."playlist" TO chartio_read_only_user;` `GRANT SELECT ON public."playlisttrack" TO chartio_read_only_user;` `GRANT SELECT ON public."track" TO chartio_read_only_user;`
Your new read-only user now has the necessary permissions for Chartio to
connect to your database.