CODEWITHSUNDEEP
dockerdocker-composecoreosrkt
KajMagnus
KajMagnus

Reputation: 11686

Can I run/convert a Docker-Compose project with/to CoreOS rkt?

Can I use CoreOS rkt, or some related tool, to run my Docker-Compose project?

And / or is there some way to convert a Docker-Compose project to something similar, for CoreOS and rkt?

My Docker-Compose project works fine on localhost and on the production servers. But I think I like CoreOS' and rkt's security model better — then I wouldn't have to run the containers with, in effect, root privileges, on my development machine (right?).

Here seems to be docs about how to run a single Docker container with rkt: https://coreos.com/rkt/docs/latest/running-docker-images.html — but I want Docker-Compose like functionality, not just a single container.

(I currently use an Ubuntu based Linux distro.)

Upvotes: 10

Views: 2409

Answers (1)

mxg
mxg

Reputation: 111

rkt-compose is a lightweight alternative to kubernetes and compose2fleet. rkt-compose supports a subset of the docker-compose file syntax and runs all services of a docker-compose file within a single pod in a wrapped rkt process without dependencies to other tools than rkt and docker (for build). To support service discovery and health checks Consul integration can be enabled optionally.

I have tested the current rkt-compose v0.1.0 release successfully against several of my old docker-compose projects.

Disclosure: I have developed rkt-compose while playing around with rkt and to learn golang.

Security annotation: As in docker rkt containers must also run as root. Running containers as unprivileged user is not supported. I am currently investigating runc: It is also shipped with CoreOS and in its current master state it allows you to truely run a container as unprivileged user with some workarounds and limitations but you still cannot run docker-compose files directly on it.

Upvotes: 2

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