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.
v1.2.0 - Docker 17.09.1-ce - Linux 4.9.78
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.
Additionally, images are available with support for Amazon EC2 Container Service (ECS) here.
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.
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
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) 2014-2018 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.