By default when Vagrant boots a VM it do so in a mode know as “headless mode”. Headless mode just means that no UI from the underlying provider is displayed. There are going to situations where we’re testing changes to our VM and we’ll be unable to access the VM using
vagrant ssh (such as when we make a mistake altering the firewall rules). In order to display the UI we can add
vb.gui = true to our virtualbox configuration.
Vagrant.configure("2") do |config| config.vm.box = "generic/ubuntu2004" config.vm.provider "virtualbox" do |vb| # Display the VirtualBox GUI when booting the machine vb.gui = true end end
The next time we perform a
vagrant up or
vagrant reload VirtualBox will open and we’ll see the virtualbox displayed.
Then we can login using vagrant as the username and password and preform any actions we need to troubleshoot the problem.
What if I told you PHP has a built-in feature that will reduce the number of bugs in our code base? What if I told you it’s super simple to introduce into your daily coding routine? Would you be interested in using it?
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The Vagrant box that we pick will default to some amount of RAM. During our development, we’ll run into situations where we need to increase that amount. To do that we’re going to introduce a new section that’s specific to VirtualBox. We can then set the amount of RAM (in Megabytes) using the
memory configuration setting.
Vagrant.configure("2") do |config| config.vm.box = "generic/ubuntu2004" config.vm.provider "virtualbox" do |vb| # Customize the amount of memory on the VM: vb.memory = "4096" end end
The fun part about this setting is that because we’re configuring resources for a VM and not a physical device we can easily give it memory amounts that would be hard to get into a physical device. For example, we could give our VM 3GB of RAM.
Vagrant.configure("2") do |config| config.vm.box = "generic/ubuntu2004" config.vm.provider "virtualbox" do |vb| # Customize the amount of memory on the VM: vb.memory = "3072" end end
Now if reload our VM and ssh into it we can check and see we now have 3 GB of RAM.
$ free -mh total used free shared buff/cache available Mem: 2.9Gi 452Mi 2.2Gi 3.0Mi 328Mi 2.3Gi Swap: 1.9Gi 0B 1.9Gi
If you have questions related to vagrant or the PHP ecosystem in general you would like us to answer in future videos please ask them in the comments below.
One of the hard parts about learning how to develop software is the minefield of acronyms that exists in the industry. The goal of this series of articles is to shine a light on an acronym so the next time another developer uses it in conversation you can follow along without missing a beat.
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