Deploy Golang App to AWS using Docker-Machine

lets spinoff….

Requirements

DockerToolBox ( docker-compose, docker-machine )
AWS account ( free-tier works )

Aws Credentials
get the key pair from the aws or create one in aws Resources

$ vim ~/.aws/credentials
[default]
aws_access_key_id = **************Z3NVPP
aws_secret_access_key = ************T3Fyu7

Spin off docker-machine with aws driver

— make sure to create subnet in aws console first —

$ docker-machine create --driver amazonec2 \
  --amazonec2-open-port 8080 \
  --amazonec2-region ap-south-1 \
  --amazonec2-subnet-id subnet-***** \
  amazon-aws-test
# verify
$ docker-machine ls

folder structure project

golang_aws
 |_ docker-compose.yml
 |_ Dockerfile
 |_ main.go

docker-compose.yml

version: '3'
services: 
    goapp:
          container_name: golang_webapp
          hostname: golang_webapp
          restart: on-failure
          build:
              context: .
          environment:
              GET_HOSTS_FROM: dns
          ports:
              - "8080:8080"

Dockerfile

FROM golang:1.15-alpine3.12 AS build
WORKDIR /src/
COPY main.go /src/
RUN CGO_ENABLED=0 go build -o /bin/demo
FROM scratch
COPY --from=build /bin/demo /bin/demo
ENTRYPOINT [ "/bin/demo" ]

main.go

package main
import "log"
import "net/http"
func main() {
  http.HandleFunc("/",func(w http.ResponseWriter,r *http.Request){
    _,err := w.Write([]byte("hello"))
    if err!=nil {
      log.Println("Error",err)
    }
  })
  log.Println("up&Running....")
  log.Fatal(http.ListenAndServe(":8080",nil))
}

Set Docker Env

$ docker-machine env amazon-aws-test
$ eval $("C:\Program Files\Docker Toolbox\docker-machine.exe" env aws-test1)

Build & Run

$ cd golang_aws
$ docker-compose up -d --build

verify — get the public ip from AWS or docker-machine ls

$ docker-machine ls

get the public_IP from URL column

$ curl -k http://<public_IP>:8080
  hello

lets get to aws console

1. EC2 instance is running up.
2. lets look at the security group for our docker-machine.

security-group

Refactor

if any changes done to the code locally, build the docker-compose again.

thats’ all folks, take it easy………………