Configure Laravel to Use PostgreSQL with Homestead


I was working on a new Laravel app locally with Homestead, using MySQL. I later decided to use PostgreSQL. This took a bit longer than expected. Here is how I did it.

  1. Review Homestead Setup
  2. Update Laravel’s DB Config
  3. Recreate the Database in PostgreSQL
  4. Recreate the Database Tables and Data
  5. Optional: Install a PostgreSQL client

Review Homestead Setup

First things first, I already had this app in the works, and was already running it with Homestead, and MySQL. I already had data seeded to the database too.

Homestead was setup to run separately from my app’s repository. The folders/site config in Homestead.yaml looks like this:

ip: "192.168.10.10"
memory: 2048
cpus: 1
provider: virtualbox

authorize: ~/.ssh/id_rsa.pub

keys:
    - ~/.ssh/id_rsa

folders:
    - map: ~/projects/laravel-forum
      to: /home/vagrant/projects/laravel-forum
sites:
    - map: forum.local
      to: /home/vagrant/projects/laravel-forum/public

databases:
    - homestead

One thing to note here is that, by default, Homestead will forward the default 5432 PostgreSQL port to 54320 on the host machine. This will come in handy later when you try to connect to it with SQL client from the host machine.

Update Laravel’s DB Config

Modify the Laravel project’s /.env environment file in the project root to use the PostgreSQL instance that’s already in the Homestead VM.

Change this:

DB_CONNECTION=mysql
DB_HOST=127.0.0.1
DB_PORT=3306
DB_DATABASE=forum
DB_USERNAME=homestead
DB_PASSWORD=secret

to this:

DB_CONNECTION=pgsql
DB_HOST=127.0.0.1
DB_PORT=5432
DB_DATABASE=forum
DB_USERNAME=homestead
DB_PASSWORD=secret

After refreshing the Laravel app in the browser, it will now show a database not found error, proving the configuration change worked.

Recreate the database in PostgreSQL

Since Laravel’s database migrations do not handle creation of the actual databases, this step has to be handled manually.

Login to Homestead’s virtual machine:

$ vagrant ssh

From inside the VM where PostgreSQL is already setup, login to its command line binary:

$ psql -U homestead -h localhost

That homestead username is what was setup in Laravel’s .env file, but more importantly, that’s the default username that comes with Homestead. The default password is secret.

A PostgreSQL command line is then displayed where queries and SQL can be run:

psql (9.5.10)
SSL connection (protocol: TLSv1.2, cipher: ECDHE-RSA-AES256-GCM-SHA384, bits: 256, compression: off)
Type "help" for help.

homestead=#

Create the database. In my case, I only had one database called forum:

homestead=# create database forum;

After refreshing the Laravel app in the browser again, it will now show some table not found error, proving the database was created successfully.

Type \q to logout of psql, and then exit to log out of Homestead.

Recreate the Database Tables and Data

With MySQL, I did not manually touch the data directly or with php artisan tinker, but instead used migrations and database seeds from the start. The seeds are default Laravel seeder classes that use the built in factories and faker.

So all I had to do was rerun the migrations and seeds with:

$ php artisan migrate:refresh --seed

At this point, the Laravel app was again fully functional upon browser refreshing and was now running from PostgreSQL.

Optional: Install a PostgreSQL client

As nice as the psql command line seems, I prefer using a GUI SQL client to quickly view and scan the data. Since I’m on Arch Linux, I was already using TeamSQL as my SQL GUI client.

Although Homestead uses PostgreSQL’s default 5432 inside the virtual machine, it forwards to 54320, which is what has to be used for a SQL GUI client to connect from the host to the PostgreSQL instance inside the VM guest.

The connection info is:

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