Distributed api service for testing purposes

Create network

docker network create nodenetwork

docker network ls

Prepare db

sudo apt-get install mongodb-clients

mongo localhost/mydb

use node db.createUser( { user: "test", pwd: "test", roles: [ { role: "readWrite", db: "node" } ] } )

Run db container

mkdir ~/data

docker run -d -p 27017:27017 -v ~/data:/data/db --net=my-node-network --name=node-db mongo

Build image for node application

docker build -f Dockerfile -t node-api:1.0 .

Start container

docker run -d -p 3001:4000 --name=api --net=my-node-network -e "db=mongodb://test:test@node-db:27017/node" node-api:1.0

Monitoring

docker network inspect my-node-network

docker exec -ti api bash

docker logs api

Testing

HEALTHCHECK

HEALTHCHECK --interval=5s --timeout=10s --retries=3 CMD curl -sS localhost:4000 || exit 1

and check the status of API service

docker inspect api | jq '.[].State.Health'

output should be:

{
  "Status": "healthy",
  "FailingStreak": 0,
  "Log": [
    {
      "Start": "2018-06-12T10:13:18.741893926+03:00",
      "End": "2018-06-12T10:13:18.799996008+03:00",
      "ExitCode": 0,
      "Output": "API service up and running"
    },
    {
      "Start": "2018-06-12T10:13:23.800141532+03:00",
      "End": "2018-06-12T10:13:23.869154994+03:00",
      "ExitCode": 0,
      "Output": "API service up and running"
    },
    {
      "Start": "2018-06-12T10:13:28.869299375+03:00",
      "End": "2018-06-12T10:13:28.926994914+03:00",
      "ExitCode": 0,
      "Output": "API service up and running"
    },
    {
      "Start": "2018-06-12T10:13:33.927135854+03:00",
      "End": "2018-06-12T10:13:33.993611212+03:00",
      "ExitCode": 0,
      "Output": "API service up and running"
    },
    {
      "Start": "2018-06-12T10:13:38.993717829+03:00",
      "End": "2018-06-12T10:13:39.060921116+03:00",
      "ExitCode": 0,
      "Output": "API service up and running"
    }
  ]
}

Goss

add Goss to the Dockerfile

RUN curl -fsSL https://goss.rocks/install | sh

and we can test use goss:

docker exec -ti api goss -g test/goss/infrastructure.test.yaml validate

docker exec -ti api goss -g test/goss/infrastructure.test.yaml validate