README.md: tell people how to create a database for the application.

Hui-improve-README.md
Lan Hui 2023-07-30 16:16:24 +08:00
parent 0539b7053a
commit 6e337b3edc
1 changed files with 4 additions and 2 deletions

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@ -24,8 +24,10 @@ I spent about two hours installing LRR to a bare, remote Ubuntu server (Ubuntu 2
LRR needs Apache and MySQL to run. I followed [How To Install Linux, Apache, MySQL, PHP (LAMP) stack on Ubuntu 20.04](https://www.digitalocean.com/community/tutorials/how-to-install-linux-apache-mysql-php-lamp-stack-on-ubuntu-20-04) to set up these server applications.
LRR uses a database called `lrr`. I need to export the existing `lrr` to a plain text file (including many sql commands) and import that text file to the newly created `lrr` database on the new server.
The command for exporting the database is `mysqldump -u mnc -p lrr > lrr_database_dump.txt`.
LRR uses a database called `lrr`. So create this database using MySQL root account. Open MySQL's prompt using `sudo mysql`. Create the database using command `CREATE DATABASE lrr;`, and grant all privileges to MySQL user `lrr` using command `GRANT ALL PRIVILEGES ON lrr.* TO 'mnc'@'localhost' WITH GRANT OPTION;`. If MySQL user mnc does not exist, create it using command `CREATE USER 'mnc'@'localhost' IDENTIFIED BY 'password'`.
I need to export the existing `lrr` to a plain text file (including many sql commands) and import that text file to the newly created `lrr` database on the new server.
The command for exporting the database is `mysqldump -u mnc -p lrr > lrr_database_dump.txt`, where mnc after -u is MySQL's username, and lrr after -p is the database name.
The command for importing is `mysql -u mnc -p lrr < lrr_database_dump.txt`. Read [How to Import and Export MySQL Databases in Linux](https://phoenixnap.com/kb/import-and-export-mysql-database) for more detail.
LRR also needs to store assignment submissions. We store them in a folder called `../../lrr_submission`. Note that `lrr_submission` is two levels above the project folder (where many PHP files reside). I copied this folder from the existing one. I think it is also OK if you create an empty folder.