Multiple Vagrant VMs in One Vagrantfile
With the help of Vagrant, you can create a virtual machine as per requirement. You can also modify the physical properties of this virtual machine such as RAM, CPUs, etc. You can Establish network interfaces so that you can access your virtual machine from your own computer, another device on the same network, or even from another virtual machine.
1. How to Install Vagrant on CentOS 7
2. How configure X11 Forwarding in CentOS/RHEL 6/7
3. How to Set Up a Cookieless Domain in Linux
In this article, we will help you to create multiple Virtual machines using single Vagrantfile.
First we are going to explain the base configuration of of Vagrantfile. In this we are CentOS 7 to built new VM machine.
Vagrant.configure("2") do |config| config.vm.define "web" do |web| config.vm.box = "centos/7" config.vm.hostname = 'web.techoism.local' config.vm.network "private_network", ip: "172.20.10.13" config.vm.network "forwarded_port", guest: 80, host: 81 config.vm.provider "virtualbox" do |v| v.memory = 2048 v.cpus = 2 end end end
config.vm.define: Define VM name
config.vm.box: Every Vagrant development environment requires a box. You can search for boxes at official site.
config.vm.hostname: Create your machine hostname
config.vm.network “private_network”: Create a private network, which allows host-only access to the machine using a specific IP.
config.vm.network “forwarded_port”: Create a forwarded port mapping which allows access to a specific port
v.memory: Customize the amount of memory on the VM
v.cpus: Customize the amount of CPU on the VM
Built Multiple VM:
Vagrant helps us to create two or more VM using single Vagrantfile. While creating the Vagrantfile make sure that you are using a different hostname, IP address and other settings so there aren’t conflicts.
Vagrant.configure("2") do |config| config.vm.define "Dev" do |Dev| config.vm.box = "centos/7" config.vm.hostname = 'web.techoism.local' config.vm.network :private_network, ip: "172.20.10.15" config.vm.provider :virtualbox do |vb| v.memory = 2048 v.cpus = 2 end end config.vm.define "web" do |web| config.vm.box = "centos/7" config.vm.hostname = 'qa.techoism.local' config.vm.network :private_network, ip: "172.20.10.16" config.vm.provider :virtualbox do |vb| v.memory = 2048 v.cpus = 2 end end end
The above Vagrantfile define two VM’s. One VM is for development and another VM is for the web.
Now run below command to built the VM.
# vagrant up
The cool thing is that Vagrant automatically runs most commands on all of the VMs in the Vagrantfile. Below command will tell the status of a vagrant machine.
# vagrant status
Access Vagrant Machine:
Run below command to access the Virtual Machine.
# vagrant ssh
box manages boxes: installation, removal, etc. destroy stops and deletes all traces of the vagrant machine global-status outputs status Vagrant environments for this user halt stops the vagrant machine help shows the help for a subcommand init initializes a new Vagrant environment by creating a Vagrantfile login log in to HashiCorp's Vagrant Cloud package packages a running vagrant environment into a box plugin manages plugins: install, uninstall, update, etc. port displays information about guest port mappings powershell connects to machine via powershell remoting provision provisions the vagrant machine push deploys code in this environment to a configured destination rdp connects to machine via RDP reload restarts vagrant machine, loads new Vagrantfile configuration resume resume a suspended vagrant machine snapshot manages snapshots: saving, restoring, etc. ssh connects to machine via SSH ssh-config outputs OpenSSH valid configuration to connect to the machine status outputs status of the vagrant machine suspend suspends the machine up starts and provisions the vagrant environment validate validates the Vagrantfile version prints current and latest Vagrant version