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goserv

Boilerplate for how I like to write a backend web service

Build

export GOFLAGS="-mod=vendor"
go mod tidy
go mod vendor
go generate -mod=vendor ./...
go build -mod=vendor .

./goserv run --listen :3000 --serve-path ./overrides

Eamples and Config Templates

The example files are located in ./examples

Caddyfile (web server config)
.env (environment variables)
build.sh

Dependencies

This setup can be run on a VPS, such as Digital Ocean, OVH, or Scaleway for $5/month with minimal dependencies:

VPS
Caddy
PostgreSQL
Serviceman

Mac, Linux:

curl -fsS https://webinstall.dev | bash
export PATH="$HOME:/.local/bin:$PATH"

webi caddy serviceman postgres

VPS Setup

You should have a domain pointing to a VPS and create a user account named app (because that's a common convention). This script will create an app user, copying the authorized_keys from the root account.

my_vps='example.com'
ssh root@"$my_vps" 'curl -sS https://webinstall.dev/ssh-adduser | bash'

You can then login as a normal user.

ssh app@"$my_vps"

It is now safe to disable the root account.

Caddy (Automatic HTTPS Server)

curl -fsS https://webinstall.dev/caddy | bash

You can start Caddy as a system service under the app user like this:

sudo setcap 'cap_net_bind_service=+ep' "$(readlink $(command -v caddy))"

sudo env PATH="$PATH" \
    serviceman add --name caddy --username app \
    caddy run --config ./Caddyfile

See the Cheat Sheet at https://webinstall.dev/caddy and https://webinstall.dev/serviceman

PostgreSQL (Database)

curl -fsS https://webinstall.dev/postgres | bash

You can start Postgres as a system service under the app user like this:

sudo env PATH="$PATH" \
    serviceman add --name postgres --username app -- \
    postgres -D /home/app/.local/share/postgres/var -p 5432

Username and password are set to 'postgres' by default:

psql 'postgres://postgres:postgres@localhost:5432/postgres'

See the Cheat Sheets at https://webinstall.dev/postgres and https://webinstall.dev/serviceman

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