Tiny Linux distro that runs the entire OS as Docker containers
Go Shell Makefile
Latest commit a9f19b7 Jan 18, 2017 @SvenDowideit SvenDowideit committed on GitHub Merge pull request #1529 from rancher/revert-1511-use-1.12.6-everywhere
Revert "I've build 1.12.6 for arm&arm64 - should try it out"
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.github Update ISSUE_TEMPLATE.md May 6, 2016
assets Bump Go to 1.7.1 Sep 16, 2016
cmd Don't prompt for user input when we're not interactive Jan 18, 2017
compose make ros log to dmesg Nov 30, 2016
config Allow question marks in unquoted kernel parameters Jan 15, 2017
dfs make ros log to dmesg Nov 30, 2016
docker make ros log to dmesg Nov 30, 2016
docs Fix typos Jan 5, 2017
hostname Move default hostname and network under common key Jun 1, 2016
images make ros log to dmesg Nov 30, 2016
init previous&current isolinux/syslinux cfg works for fresh install, and .… Jan 15, 2017
log add --debug logging option to installer, and a dummy set-disk-partitions Jan 18, 2017
netconf make ros log to dmesg Nov 30, 2016
scripts avoid kmsg ratelimiting for now Jan 18, 2017
selinux Move in code from netconf and docker-from-scratch Oct 19, 2016
tests make yN and reboot happen in the console container, not in the instal… Jan 17, 2017
util add integration tests for iso boot, install and then boot from disk. Jan 15, 2017
vendor make ros log to dmesg Nov 30, 2016
.dockerignore Close streams properly Aug 22, 2016
.drone.yml Update for Drone 0.5 Aug 28, 2016
.gitignore Updating documentation around kernel modules Dec 17, 2016
Dockerfile.dapper linux 4.9.4 Jan 16, 2017
LICENSE Remove incorrect copyright Feb 25, 2015
Makefile Changes needed to get the arm and arm64 builds working Nov 25, 2016
README.md London AMI Dec 16, 2016
main.go Fix golint errors Nov 28, 2016
os-config.tpl.yml Revert "I've build 1.12.6 for arm&arm64 - should try it out" Jan 18, 2017
trash.conf make ros log to dmesg Nov 30, 2016



The smallest, easiest way to run Docker in production at scale. Everything in RancherOS is a container managed by Docker. This includes system services such as udev and rsyslog. RancherOS includes only the bare minimum amount of software needed to run Docker. This keeps the binary download of RancherOS very small. Everything else can be pulled in dynamically through Docker.

How this works

Everything in RancherOS is a Docker container. We accomplish this by launching two instances of Docker. One is what we call the system Docker which runs as the first process. System Docker then launches a container that runs the user Docker. The user Docker is then the instance that gets primarily used to create containers. We created this separation because it seemed logical and also it would really be bad if somebody did docker rm -f $(docker ps -qa) and deleted the entire OS.

How it works

Latest Release

v0.7.1 - Docker 1.12.3 - Linux 4.4.24



Additional Downloads

Latest Links


v0.7.1 Links

v0.7.0 Links

Note: you can use http instead of https in the above URLs, e.g. for iPXE.


SSH keys are added to the rancher user, so you must log in using the rancher user.


Region Type AMI
ap-northeast-1 HVM ami-be5bf2df
ap-northeast-2 HVM ami-247fab4a
ap-south-1 HVM ami-dbf682b4
ap-southeast-1 HVM ami-c6d073a5
ap-southeast-2 HVM ami-51132c32
eu-central-1 HVM ami-2025df4f
eu-west-1 HVM ami-c62170b5
eu-west-2 HVM ami-65e8e201
sa-east-1 HVM ami-52b8273e
us-east-1 HVM ami-dfdff3c8
us-east-2 HVM ami-674c1602
us-west-1 HVM ami-da2075ba
us-west-2 HVM ami-ab3192cb

Google Compute Engine

We are providing a disk image that users can download and import for use in Google Compute Engine. The image can be obtained from the release artifacts for RancherOS.

Download Image

Please follow the directions at our docs to launch in GCE.

Documentation for RancherOS

Please refer to our RancherOS Documentation website to read all about RancherOS. It has detailed information on how RancherOS works, getting-started and other details.

Support, Discussion, and Community

If you need any help with RancherOS or Rancher, please join us at either our Rancher forums or #rancher IRC channel where most of our team hangs out at.

For issues relating to security, please email security@rancher.com instead of posting an open issue in Github.

Please submit any RancherOS bugs, issues, and feature requests to rancher/os.

Please submit any Rancher bugs, issues, and feature requests to rancher/rancher.


Copyright (c) 2014-2016 Rancher Labs, Inc.

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at


Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.