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README.md
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# RVN - TP2.2 : Ordonnancement de services sur une grappe
1. Provisionner des VMs **sur notre WAN** avec [Vagrant](https://developer.hashicorp.com/vagrant/docs)
2. Déployer un cluster [Consul](https://developer.hashicorp.com/consul/docs)
3. Déployer un service avec Docker et le surveiller avec Consul
4. Déployer des services avec [Nomad](https://developer.hashicorp.com/nomad/docs)
2. Déployer [Consul](https://developer.hashicorp.com/consul/docs) et [Nomad](https://developer.hashicorp.com/nomad/docs)
3. Déployer des services
## 1. Provisionner des VMs
1. Vérifiez le bon fonctionnement de notre WAN
2. Écrivez chacun un [Vagrantfile](./Vagrantfile) pour lancer une VM sur le WAN, en suivant le schéma d'adressage suivant :
| Continent| IP sur continent | IP VM |
|--------- | ------------------ | ---------------- |
| Amerique | `10.13.1.3/24` | `10.13.1.31/24` |
| Europe | `10.13.2.1/24` | `10.13.2.11/24` |
| Asie | `10.13.3.4/24` | `10.13.3.41/24` |
Vous pouvez vous inspirer de :
3. Vérifiez que les machines puissent discuter entre elles.
* [./Vagrantfile](./Vagrantfile)
* [./install_nomad_consul.sh](./install_nomad_consul.sh)
## 2. Déployer Consul et Nomad
1. Modifiez votre `Vagrantfile` pour qu'il provisionne votre VM avec [Consul](https://developer.hashicorp.com/consul/docs) et [Nomad](https://developer.hashicorp.com/nomad/docs)
Vous pouvez aussi lancer des scripts sur les VMs sans rebooter, par exemple avec :
ssh ... ENV=xxx 'bash -s' < script.sh
Inspiration : [./install_nomad_consul.sh](./install_nomad_consul.sh)
Chaque continent est un "datacenter" : `am`, `eu`, `as`. Il nous faut un Consul/Nomad serveur par zone géographique, les autres sont clients (configuration manuelle dans les `.hcl`).
## Docs
### Consul
* Follow this guide to provision a Vagrant VM with Consul: https://developer.hashicorp.com/consul/tutorials/certification-associate-tutorials/get-started-create-datacenter
* Vagrant can auto-install Docker if you ask it to run containers: https://developer.hashicorp.com/vagrant/docs/provisioning/docker
* Deployment guide: https://developer.hashicorp.com/consul/tutorials/production-deploy/deployment-guide
* Register services to Consul: https://developer.hashicorp.com/consul/tutorials/get-started-vms/virtual-machine-gs-service-discovery
### Nomad
* Deployment guide: https://developer.hashicorp.com/nomad/tutorials/enterprise/production-deployment-guide-vm-with-consul

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Vagrantfile vendored
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# -*- mode: ruby -*-
# vi: set ft=ruby :
# Script de configuration Nomad
# Fait par A. Luxey-Bitri en décembre 2023
# Inspiré des docs Hashcorp
# Licence : Domaine public
# ÉTUDIANTS : Ça peut vous donner quelques idées, mais le script est périmé, inspirez-vous plutôt `install_nomad_consul.sh`
# Provisioning
$script = <<-'SCRIPT'
echo "## Provisioning VM ##"
@ -60,60 +67,4 @@ Vagrant.configure("2") do |config|
env: {'CONSUL_VERSION' => CONSUL_VERSION}
config.vm.box_check_update = false
# Create a forwarded port mapping which allows access to a specific port
# within the machine from a port on the host machine. In the example below,
# accessing "localhost:8080" will access port 80 on the guest machine.
# NOTE: This will enable public access to the opened port
# config.vm.network "forwarded_port", guest: 80, host: 8080
# Create a forwarded port mapping which allows access to a specific port
# within the machine from a port on the host machine and only allow access
# via 127.0.0.1 to disable public access
# config.vm.network "forwarded_port", guest: 80, host: 8080, host_ip: "127.0.0.1"
# Create a private network, which allows host-only access to the machine
# using a specific IP.
# config.vm.network "private_network", ip: "192.168.33.10"
# Create a public network, which generally matched to bridged network.
# Bridged networks make the machine appear as another physical device on
# your network.
# config.vm.network "public_network"
# Share an additional folder to the guest VM. The first argument is
# the path on the host to the actual folder. The second argument is
# the path on the guest to mount the folder. And the optional third
# argument is a set of non-required options.
# config.vm.synced_folder "../data", "/vagrant_data"
# Disable the default share of the current code directory. Doing this
# provides improved isolation between the vagrant box and your host
# by making sure your Vagrantfile isn't accessable to the vagrant box.
# If you use this you may want to enable additional shared subfolders as
# shown above.
# config.vm.synced_folder ".", "/vagrant", disabled: true
# Provider-specific configuration so you can fine-tune various
# backing providers for Vagrant. These expose provider-specific options.
# Example for VirtualBox:
#
# config.vm.provider "virtualbox" do |vb|
# # Display the VirtualBox GUI when booting the machine
# vb.gui = true
#
# # Customize the amount of memory on the VM:
# vb.memory = "1024"
# end
#
# View the documentation for the provider you are using for more
# information on available options.
# Enable provisioning with a shell script. Additional provisioners such as
# Ansible, Chef, Docker, Puppet and Salt are also available. Please see the
# documentation for more information about their specific syntax and use.
# config.vm.provision "shell", inline: <<-SHELL
# apt-get update
# apt-get install -y apache2
# SHELL
end