AWS EB undefined RDS_HOSTNAME with Database hosts array empty - mysql

Question

Currently in a Laravel project using AWS EB with RDS.
When I run
php artisan migrate --seed
then I get
PHP Notice: Undefined index: RDS_HOSTNAME in /var/app/current/config/database.php on line 5
PHP Notice: Undefined index: RDS_USERNAME in /var/app/current/config/database.php on line 6
PHP Notice: Undefined index: RDS_PASSWORD in /var/app/current/config/database.php on line 7
PHP Notice: Undefined index: RDS_DB_NAME in /var/app/current/config/database.php on line 8
and
Database hosts array is empty. (SQL: select * from
information_schema.tables where table_schema = ? and table_name =
migrations and table_type = 'BASE TABLE')
I'm not using a .env file but defining these variables in EB configuration, like
and my ./config/database.php file
Tested changing the variables' prefix to RDS_ instead of DB_ in EB but that didn't solve the problem.

Answer 1

Per the Elastic Beanstalk documentation here:
Note: Environment properties aren't automatically exported to the
shell, even though they are present in the instance. Instead,
environment properties are made available to the application through
the stack that it runs in, based on which platform you're using.
So Elastic Beanstalk is going to pass those environment variables to the Apache HTTP server process, but not the Linux shell where you are running that php command.
Per the documentation here, you need to use the get-config script to pull those environment variable values into your shell.
So you'll need to do this for all
/opt/elasticbeanstalk/bin/get-config environment -k RDS_USERNAME
which will print the value of RDS_USERNAME. Then export it to use in other commands
export RDS_USERNAME="value"
Do that for all - RDS_HOSTNAME, RDS_USERNAME, RDS_PASSWORD and RDS_DB_NAME. Then if you run
export
you must be able to see RDS_HOSTNAME, RDS_USERNAME, RDS_PASSWORD and RDS_DB_NAME and the respective value in front.
Once that's done and you run
php artisan migrate --seed
you'll then get as expected