Docker image containing Consul and Envoy and Service applications

Docker image containing Consul and Envoy which can also register services and central config when starting. Can be used for registering services or config, or when you need an Envoy sidecar.

Warning: The image is not intended for production use. It is intended to mimic the behavior of a VM with a container and build test environments to test Consul functionalities without the overhead of deploying a full VM.

Start container

Provision configuration files

The container expects configuration files to be created and shared with the container in a Docker volume.

Create volumes

docker volume create server_config > /dev/null
docker volume create client_config > /dev/null
docker container create --name volumes -v server_config:/server -v client_config:/client alpine > /dev/null

Copy configuration files

# Server files
docker cp ./server.hcl volumes:/server/server.hcl

# Client files
docker cp ./agent.hcl volumes:/client/agent.hcl
docker cp ./svc-client.hcl volumes:/client/svc-client.hcl

Consul server

 docker run \
  -d \
  -v server_config:/etc/consul.d \
  -p 8500:8500 \
  -p 8600:8600/udp \
  --name=server \
  danielehc/consul-learn-image:${IMAGE_TAG} \
  consul agent -server -ui \
    -node=server-1 \
    -bootstrap-expect=1 \
    -client=0.0.0.0 \
    -config-file=/etc/consul.d/server.hcl

Get server IP:

SERVER_IP=`docker inspect -f '{{range .NetworkSettings.Networks}}{{.IPAddress}}{{end}}' server`

Consul client

docker run \
    -d \
    -v client_config:/etc/consul.d \
    --name=client \
    danielehc/consul-learn-image:${IMAGE_TAG} \
    consul agent \
     -node=client-1 \
     -join=${SERVER_IP} \
     -config-file=/etc/consul.d/agent.hcl \
     -config-file=/etc/consul.d/svc-client.hcl

Build

Tweak image

The Makefile permits you to define the version of the applications to use as well as the Docker repository:

DOCKER_REPOSITORY=danielehc/consul-learn-image
CONSUL_VERSION=1.8.3
ENVOY_VERSION=1.15.0
FAKEAPP_VERSION=0.17.6
COUNTER_VERSION=0.0.3
DASHBOARD_VERSION=0.0.3

edit the Makefile to adjust the versions you want.

Build the image

make build

Deploy to Docker

docker login --username=danielehc

Password: 
WARNING! Your password will be stored unencrypted in /home/daniele/.docker/config.json.
Configure a credential helper to remove this warning. See
https://docs.docker.com/engine/reference/commandline/login/#credentials-store

Login Succeeded

make build_and_push