consul-commands.md

Statr Consul Server

consul agent -server -ui -bootstrap-expect 1 -data-dir=/var/consul.d -config-dir=/etc/consul.d -node=consul-master -client=0.0.0.0

Start Consul agent

consul agent -data-dir=/var/consul.d -config-dir=/etc/consul.d -node=consul-client1

dig

dig @localhost -p 8600 webserver.service.consul SRV

Json - Consul Service

{ "service": { "name": "webserver", "tags": ["testserver"], "port":80 } }

{ "service": { "name": "webserver", "tags": [ "testserver" ], "port": 80, "check": { "id": "api", "name": "HTTP API", "http": "http://localhost", "method": "GET", "interval": "10s", "timeout": "1s" } } }

Nginx Config

resolver localhost:8600; set $webserver

proxy_pass $webserver

Api URL

curl http://localhost:8500/v1/catalog/service/webserver?pretty

dig

dig @localhost -p 8600 webserver.service.consul SRV

KV

consul kv put mysql/config/user root consul kv put mysql/config/password root consul kv put mysql/config/dbname laravel

consul kv get mysql/config/dbname

curl localhost:8500/v1/kv/mysql/config/user curl localhost:8500/v1/kv/mysql/config/user?raw=true

docker-compose.yaml

version: '3'

services:
    consul_master:
        build: .
        container_name: consul-master
        restart: always
        tty: true
        ports:
            - "8000:80"
        networks:
            - app-network

    consul_client1:
        build: .
        container_name: consul-client1
        restart: always
        tty: true
        ports:
            - "8001:80"
        networks:
            - app-network

    consul_client2:
        build: .
        container_name: consul-client2
        restart: always
        tty: true
        ports:
            - "8002:80"
        networks:
            - app-network
networks:
    app-network:
        driver: bridge

Dockerfile

FROM nginx:1.15.0-alpine
RUN apk update && apk add bash bind-tools vim curl
RUN wget https://releases.hashicorp.com/consul/1.5.3/consul_1.5.3_linux_amd64.zip
RUN unzip consul_1.5.3_linux_amd64.zip && mv consul /usr/bin && rm -f consul_1.5.3_linux_amd64.zip
RUN mkdir /etc/consul.d && mkdir /var/consul.d