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devbox

devbox is responsible for bootstrapping your development environment.

About devbox

devbox is a work in progress. It is an opinionated wrapper around docker and docker-compose.

devbox provides a way to get all of your services for local application development up and running quickly. Simply create a project and tell devbox what services are included, it will handle the rest.

Installation

In order to build this package you'll need a few dependencies install:

  • Rust
  • Docker

Installing Rust

The de-facto way to install Rust is via rustup.

Run the following in your terminal, then follow the onscreen instructions.

$ curl https://sh.rustup.rs -sSf | sh

Installing Docker

If you're running macOS you'll want visit the Docker for Mac website for installation instructions.

Installing devbox

To get devbox installed, simply run the following:

$ cargo install --git https://github.com/scrogson/devbox --bin devbox

This will compile devbox and move the resulting executable into ~/.cargo/bin which you should have been instructed to put in your $PATH when installing Rust.

Generating a Project

devbox works with projects. A project is a namespace to provide isolation between containers in other projects one might have.

To generate a project, use the new subcommand with the name of our project like so:

$ devbox new example

This will generate a couple of files in your home directory:

$ tree ~/.config/devbox/ -L 2
~/.config/devbox/
└── example
    ├── config.toml
    └── docker-compose.yml

1 directory, 2 files

The config.toml file is the devbox configuration for your project. In it contains configuration for all of the services in your project. It looks like this:

volumes = [
  "mysql",
  "postgres"
]

[services]
example = { git = "git@github.com:user/example" }

Volumes

Volumes is an array of docker volume names used in your project. These volumes will be created by devbox build.

Services

Services are declared by specifying the name of the service and configuring a git repository URL where the service can be cloned from. When working with a local service on disk, specify the path option along with the absolute path to the service on disk.

Build the Docker Containers

Set up the networking, pull down the latest docker images, and build the docker containers:

$ devbox build -p example

Running devbox

From the root of the repository:

$ devbox start -p example

This will run the support services.

The ps command can be used to list the running containers and confirm they have started correctly:

λ devbox ps
CONTAINER ID        NAMES                    STATUS              PORTS
8fd9e21e74dc        example_kafka_1          Up 6 minutes        127.0.0.1:9092->9092/tcp
66520b2ba9cc        example_zookeeper_1      Up 6 minutes        2888/tcp, 127.0.0.1:2181->2181/tcp, 3888/tcp
f8f37e7baa69        example_mysql_1          Up 6 minutes        127.0.0.1:3306->3306/tcp
ec04a7699e15        example_postgres_1       Up 6 minutes        127.0.0.1:5432->5432/tcp
45abb5cdd9ad        example_elasticsearch_1  Up 6 minutes        127.0.0.1:9200->9200/tcp, 9300/tcp
fe8b9d71bf70        example_redis_1          Up 6 minutes        127.0.0.1:6379->6379/tcp

Reading Logs

Each service runs in its own docker container and writes its logs to standard output. In order to view the latest log output:

$ devbox logs -p example mysql

To stream the logs in real time use the --follow flag:

$ devbox logs -p example -f postgres

Note: use devbox ps to see a list of docker container names.

Stopping devbox

From the root of the repository:

$ devbox stop -p example

This will stop the docker containers in the example project.

DEVBOX_PROJECT

Most of the time, you'll be using only a single devbox project at a time. Instead of explicitly passing -p <project> for each command, devbox can read your project name from the DEVBOX_PROJECT environment variable.

Troubleshooting

Failure Starting

Ensure the Docker for Mac application is running.

To always start on boot OS X users can go to System Preferences > Users & Groups and add the Docker application to the Login Items list.

Services in Status Restarting (137)

This is likely caused by Docker not having access to enough memory. You can change this in Docker preferences in the Advanced tab. By default Docker is set to request 2GB of memory. You may need to bump this to at least 4GB in order to run all services provided by devbox.

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