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RancherOS

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 to about 20MB. 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 PID 1. 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

v0.3.3 - Docker 1.7 - Linux 3.19.2

ISO

https://releases.rancher.com/os/latest/rancheros.iso
https://releases.rancher.com/os/v0.3.3/rancheros.iso

Additional Downloads

https://releases.rancher.com/os/latest/machine-rancheros.iso
https://releases.rancher.com/os/latest/iso-checksums.txt
https://releases.rancher.com/os/latest/rancheros-033-gce-01.tar.gz
https://releases.rancher.com/os/latest/vmlinuz
https://releases.rancher.com/os/latest/initrd

https://releases.rancher.com/os/v0.3.3/machine-rancheros.iso
https://releases.rancher.com/os/v0.3.3/iso-checksums.txt
https://releases.rancher.com/os/v0.3.3/rancheros-033-gce-01.tar.gz
https://releases.rancher.com/os/v0.3.3/vmlinuz
https://releases.rancher.com/os/v0.3.3/initrd

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

Amazon

We have 2 different virtualization types of AMIs. SSH keys are added to the rancher user, so you must log in using the rancher user.

Paravirtual

Region Type AMI
ap-northeast-1 PV ami-748a2774
ap-southeast-1 PV ami-3ae8e968
ap-southeast-2 PV ami-3531750f
eu-central-1 PV ami-d2b982cf
eu-west-1 PV ami-fcb7f78b
sa-east-1 PV ami-6361ec7e
us-east-1 PV ami-8f2eede4
us-west-1 PV ami-77a15133
us-west-2 PV ami-bfbfb98f

HVM

HVM was introduced in v0.3.0 and only supports v0.3.0+.

Region Type AMI
ap-northeast-1 HVM ami-788a2778
ap-southeast-1 HVM ami-26e8e974
ap-southeast-2 HVM ami-2b317511
eu-central-1 HVM ami-c8b982d5
eu-west-1 HVM ami-e0b7f797
sa-east-1 HVM ami-9f61ec82
us-east-1 HVM ami-772dee1c
us-west-1 HVM ami-19a1515d
us-west-2 HVM ami-c5bfb9f5

Google Compute Engine (Experimental)

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 v0.3.0 or later.

Download Image

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

Known issues/ToDos

  • Add GCE daemon support. (Manages users)

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.

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

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

#License Copyright (c) 2014-2015 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

http://www.apache.org/licenses/LICENSE-2.0

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.

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