A Universe in a Nutshell for Development

Nutshell provider a lightweight dev/test environment base on the docker. Support request auto route between multi environments.

• Env discovery based on etcd (single env is also support with inner etcd)
• Simple configure to define the request between app
• Integrate goreman for process manage

how to use

edit .nutshell config for your projects

➜  nutshell git:(master) ✗ ls _example/.nutshell
apps.Procfile   apps.yaml

start docker ans env named test1

sudo docker run -p 6700-6702:6700-6702/tcp -v /data/code/go_home/src/nutshell:/go/src/nutshell -e "nutshell_env=env1" -e "nutshell_ip=172.31.27.138" -e "nutshell_http_port=6701" -e "nutshell_grpc_port=6702"  -e "nutshell_ws=/go/src/nutshell/_example" --name test1.nutshell --hostname test1.nutshell  --dns=127.0.0.1  -w /go/src/nutshell --rm -it hisunwei/nutshell:latest

login and add local dns into /etc/resolve.conf

sudo docker exec -it test1.nutshell bash
namespace 127.0.0.1 // add this line as first in /etc/resolve.conf

start nutctl

cd _example
nutctl start

how it works

config app and env

request route

app proxy:

• match the app with url prefix, then route the request to target address
• the app defined in local is

env proxy:

• all *.nutshell pattern host will be parsed to 127.0.0.1 via local dns server on port 53
• then the request will be route into a grpc proxy on 80
• the proxy detect the url prefix (/shard.User) and host,
  • use url prefix to match app
  • use host to match env

setup apps

how to build

docker build --tag=hisunwei/nutshell:latest .

ports usage:

- 6700 for customize usage like debug
- 6701 for http proxy port
- 6702 for grpc proxy port