Install Kong Gateway on macOS

Kong Gateway (OSS) is licensed under an Apache 2.0 license.

Prerequisites

You have a supported system with root or root-equivalent access.

Download and install

Install Kong Gateway:

Use the Homebrew package manager to add Kong as a tap and install it:

brew tap kong/kong
brew install kong

Prepare your configs

Kong can run either with or without a database.

When using a database, you will use the kong.conf configuration file for setting Kong’s configuration properties at start-up and the database as storage of all configured entities, such as the Routes and Services to which Kong proxies.

When not using a database, you will use kong.conf’s configuration properties and a kong.yml file for specifying the entities as a declarative configuration.

Using a database

Configure Kong so it can connect to your database. Kong supports PostgreSQL and Cassandra as datastores, and can also run in DB-less mode

If you are using Postgres, provision a database and a user before starting Kong:
```
 CREATE USER kong; CREATE DATABASE kong OWNER kong;
```
Run the Kong migrations:
```
 kong migrations bootstrap [-c /path/to/kong.conf]
```
By default, Kong is configured to communicate with a local Postgres instance. If you are using Cassandra, or need to modify any settings, download the kong.conf.default file and adjust it as necessary.

As root, add kong.conf.default to /etc:

 sudo mkdir -p /etc/kong
 sudo cp kong.conf.default /etc/kong/kong.conf

Without a database

If you are going to run Kong in DB-less mode, you should start by generating a declarative config file.

Generate a kong.yml file in your current folder using the following command:
```
 kong config init
```
The file contains instructions about how to populate it.
Edit your kong.conf file. Set the database option to off and the declarative_config option to the path of your kong.yml file:
```
 database = off
 declarative_config = /path/to/kong.yml
```

Run Kong Gateway

Start Kong Gateway:
```
 kong start [-c /path/to/kong.conf]
```
Verify that Kong Gateway is running:
```
curl -i http://localhost:8001/
```

Next steps

Check out Kong Gateway’s series of Getting Started guides to get the most out of Kong Gateway.