CODEWITHSUNDEEP
virtual-machinecloud-foundry
fkpwolf
fkpwolf

Reputation: 391

CloudFoundry: each app running at a separate virtual machine?

I printed ENV of a running Rails app.

PATH /home/vcap/app/vendor/bundle/ruby/1.9.1/bin:/home/vcap/app/bin:/bin:/usr/bin
PWD  /home/vcap/app

It is different between different type app.So cloud foundry create a new vm for each app? does it use light weight VM like QEUM?

Upvotes: 0

Views: 402

Answers (2)

Maaz Khan
Maaz Khan

Reputation: 148

Each App in CF run inside a DEA (Droplet execution agent) VM. But within this VM each app run inside of a warden container which is a small sandboxed environment for that app. You can think of warder containers as small VMs inside the DEA VM.

Each container has its own IP/Port internally NAT'ed and thus avoid any port conflict issue when pushing apps that might use same port out of the box on the same DEA VM.

Upvotes: 0

Kody Kantor
Kody Kantor

Reputation: 26

Kind of... CF creates a warden container for each app located on the DEA. That's why there might be differences (or similarities) between the output of the environmental variables.

Upvotes: 1

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