Building a Service Mesh with HAProxy and Consul

blog20181210-01.sh

cd blog/building_service_mesh
docker-compose up -d consul-server

# Wait for consul-server to bootstrap itself
sleep 10

# Create ACL token that agents use to connect to consul-server
docker-compose exec consul-server curl --request PUT --header "X-Consul-Token: mastertoken" --data '{ "ID": "agenttoken", "Name": "Agent Token", "Type": "client", "Rules": "node \"\" { policy = \"write\" } service \"\" { policy = \"write\" }" }' http://localhost:8500/v1/acl/create
sleep 1

# Create agents
docker-compose up -d www redis

blog20181210-02.json

{
	"service": {
    	"name": "${SERVICENAME}",
    	"port": 8080,
    	"address": "${MYIP}",
    	"connect": {
        	"sidecar_service": {
            	"proxy": {
                	"upstreams": [
                	{
                    	    "destination_name": "redis",
                    	    "destination_type": "connect",
                    	    "local_bind_address": "127.0.0.1",
                    	    "local_bind_port": 6379
                	}],
                	"config": {
                    	    "unsecured_bind_port": 21002,
                    	    "local_service_mode": "http"
                	}
            	}
        	}
    	  }
	},
	"acl_datacenter":"dc1",
	"acl_default_policy":"deny",
	"acl_down_policy":"extend-cache",
	"acl_token":"agenttoken"
}