Deploy a Production Ready Kubernetes Cluster on bare metal or raw VMs - This is a clone of with a kitten twist.
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
douzeb 96f5d1ca87 Add c12s sample inventory and deploy script 3 months ago
.github Update triage/support label references to kind/support (#6792) 2 years ago
.gitlab-ci Make vagrant-ubuntu20-flannel voting (#9469) 5 months ago
contrib rename ansible groups to use _ instead of (#9569) 3 months ago
docs Feature/add flannel wireguard encryption backend as option (#9583) 3 months ago
extra_playbooks Added playbook to wait for cloud-init to finish (#8799) 11 months ago
inventory Add c12s sample inventory and deploy script 3 months ago
library create snapshot-controller only if needed 9 months ago
logo Add logo folders (#4515) 4 years ago
roles follow containerd1.16.13 and 1.16.14 (#9585) 3 months ago
scripts Added ppc64le support (#8505) 1 year ago
test-infra add-Rocky-9-support (#9212) 7 months ago
tests Add ingress-nginx check for updating README (#9533) 4 months ago
.ansible-lint Move to Ansible 3.4.0 (#7672) 2 years ago
.editorconfig Add .editorconfig file (#6307) 3 years ago
.gitignore Add c12s sample inventory and deploy script 3 months ago
.gitlab-ci.yml Update kubespray version following release (#9333) 6 months ago
.gitmodules Remove submodules 7 years ago
.markdownlint.yaml add pre-commit hook to facilitate local testing (#9158) 7 months ago
.nojekyll Publish docs with docsify (#4193) 4 years ago
.pre-commit-config.yaml add pre-commit hook to facilitate local testing (#9158) 7 months ago
.yamllint yamllint: ignore .git dir (#6667) 3 years ago
CNAME Update CNAME 4 years ago add pre-commit hook to facilitate local testing (#9158) 7 months ago
Dockerfile Update Dockerfile base image (#8975) 9 months ago
LICENSE Create LICENSE 7 years ago
Makefile Mitogen: deprecate the use of mitogen and remove coverage from CI (#8147) 1 year ago
OWNERS Move some approvers to emeritus status (#6966) 2 years ago
OWNERS_ALIASES add-yankay-to-approvers (#9541) 4 months ago follow containerd1.16.13 and 1.16.14 (#9585) 3 months ago Update (#8937) 10 months ago
SECURITY_CONTACTS Update security contacts file (#9235) 7 months ago
Vagrantfile [CI] fix molecule tests on opensuse by upgrading to 15.4 (#9175) 7 months ago
_config.yml Add .editorconfig file (#6307) 3 years ago
ansible.cfg increase ansible fact_caching_timeout (#9059) 9 months ago
ansible_version.yml increase max ansible version 3 months ago
cluster.yml [etcd] Sometimes, we do not need to run etcd role on all nodes. (#9173) 6 months ago Update 5 years ago Add c12s sample inventory and deploy script 3 months ago
facts.yml add tags: always to all included sevice playbook (#7906) 2 years ago
index.html Add logo folders (#4515) 4 years ago
legacy_groups.yml add tags: always to all included sevice playbook (#7906) 2 years ago
recover-control-plane.yml Remove include task in play, deprecated in favor of import_playbook (#9576) 3 months ago
remove-node.yml Skip gathering facts when reset_nodes is false (#8843) 10 months ago
requirements-2.11.txt Upgrade ruamel.yaml.clib to work with Python 3.11 (#9426) 5 months ago
requirements-2.12.txt Upgrade ruamel.yaml.clib to work with Python 3.11 (#9426) 5 months ago
requirements.txt [ansible] make ansible 5.x the new default version (#8660) 12 months ago
reset.yml [systemd-resolved] Fix DNS configuration according to docs/ and during reset of cluster (#8560) (#8561) 1 year ago
scale.yml [etcd] Sometimes, we do not need to run etcd role on all nodes. (#9173) 6 months ago
setup.cfg library files added to setup.cfg (#5274) 3 years ago Add pbr build configuration 6 years ago
upgrade-cluster.yml [etcd] Sometimes, we do not need to run etcd role on all nodes. (#9173) 6 months ago

Deploy a Production Ready Kubernetes Cluster

Kubernetes Logo

If you have questions, check the documentation at and join us on the kubernetes slack, channel #kubespray. You can get your invite here

  • Can be deployed on AWS, GCE, Azure, OpenStack, vSphere, Equinix Metal (bare metal), Oracle Cloud Infrastructure (Experimental), or Baremetal
  • Highly available cluster
  • Composable (Choice of the network plugin for instance)
  • Supports most popular Linux distributions
  • Continuous integration tests

Quick Start

To deploy the cluster you can use :



Install Ansible according to Ansible installation guide then run the following steps:

# Copy ``inventory/sample`` as ``inventory/mycluster``
cp -rfp inventory/sample inventory/mycluster

# Update Ansible inventory file with inventory builder
declare -a IPS=(
CONFIG_FILE=inventory/mycluster/hosts.yaml python3 contrib/inventory_builder/ ${IPS[@]}

# Review and change parameters under ``inventory/mycluster/group_vars``
cat inventory/mycluster/group_vars/all/all.yml
cat inventory/mycluster/group_vars/k8s_cluster/k8s-cluster.yml

# Deploy Kubespray with Ansible Playbook - run the playbook as root
# The option `--become` is required, as for example writing SSL keys in /etc/,
# installing packages and interacting with various systemd daemons.
# Without --become the playbook will fail to run!
ansible-playbook -i inventory/mycluster/hosts.yaml  --become --become-user=root cluster.yml

Note: When Ansible is already installed via system packages on the control machine, other python packages installed via sudo pip install -r requirements.txt will go to a different directory tree (e.g. /usr/local/lib/python2.7/dist-packages on Ubuntu) from Ansible's (e.g. /usr/lib/python2.7/dist-packages/ansible still on Ubuntu). As a consequence, ansible-playbook command will fail with:

ERROR! no action detected in task. This often indicates a misspelled module name, or incorrect module path.

probably pointing on a task depending on a module present in requirements.txt.

One way of solving this would be to uninstall the Ansible package and then, to install it via pip but it is not always possible. A workaround consists of setting ANSIBLE_LIBRARY and ANSIBLE_MODULE_UTILS environment variables respectively to the ansible/modules and ansible/module_utils subdirectories of pip packages installation location, which can be found in the Location field of the output of pip show [package] before executing ansible-playbook.

A simple way to ensure you get all the correct version of Ansible is to use the pre-built docker image from Quay. You will then need to use bind mounts to get the inventory and ssh key into the container, like this:

git checkout v2.20.0
docker pull
docker run --rm -it --mount type=bind,source="$(pwd)"/inventory/sample,dst=/inventory \
  --mount type=bind,source="${HOME}"/.ssh/id_rsa,dst=/root/.ssh/id_rsa \ bash
# Inside the container you may now run the kubespray playbooks:
ansible-playbook -i /inventory/inventory.ini --private-key /root/.ssh/id_rsa cluster.yml


For Vagrant we need to install python dependencies for provisioning tasks. Check if Python and pip are installed:

python -V && pip -V

If this returns the version of the software, you're good to go. If not, download and install Python from here

Install Ansible according to Ansible installation guide then run the following step:

vagrant up


Supported Linux Distributions

  • Flatcar Container Linux by Kinvolk
  • Debian Bullseye, Buster, Jessie, Stretch
  • Ubuntu 16.04, 18.04, 20.04, 22.04
  • CentOS/RHEL 7, 8, 9
  • Fedora 35, 36
  • Fedora CoreOS (see fcos Note)
  • openSUSE Leap 15.x/Tumbleweed
  • Oracle Linux 7, 8, 9
  • Alma Linux 8, 9
  • Rocky Linux 8, 9
  • Kylin Linux Advanced Server V10 (experimental: see kylin linux notes)
  • Amazon Linux 2 (experimental: see amazon linux notes)
  • UOS Linux (experimental: see uos linux notes)
  • openEuler (experimental: see openEuler notes)

Note: Upstart/SysV init based OS types are not supported.

Supported Components

Container Runtime Notes

  • The list of available docker version is 18.09, 19.03 and 20.10. The recommended docker version is 20.10. The kubelet might break on docker's non-standard version numbering (it no longer uses semantic versioning). To ensure auto-updates don't break your cluster look into e.g. yum versionlock plugin or apt pin).
  • The cri-o version should be aligned with the respective kubernetes version (i.e. kube_version=1.20.x, crio_version=1.20)


  • Minimum required version of Kubernetes is v1.23
  • Ansible v2.11+, Jinja 2.11+ and python-netaddr is installed on the machine that will run Ansible commands
  • The target servers must have access to the Internet in order to pull docker images. Otherwise, additional configuration is required (See Offline Environment)
  • The target servers are configured to allow IPv4 forwarding.
  • If using IPv6 for pods and services, the target servers are configured to allow IPv6 forwarding.
  • The firewalls are not managed, you'll need to implement your own rules the way you used to. in order to avoid any issue during deployment you should disable your firewall.
  • If kubespray is ran from non-root user account, correct privilege escalation method should be configured in the target servers. Then the ansible_become flag or command parameters --become or -b should be specified.

Hardware: These limits are safe guarded by Kubespray. Actual requirements for your workload can differ. For a sizing guide go to the Building Large Clusters guide.

  • Master
    • Memory: 1500 MB
  • Node
    • Memory: 1024 MB

Network Plugins

You can choose between 10 network plugins. (default: calico, except Vagrant uses flannel)

  • flannel: gre/vxlan (layer 2) networking.

  • Calico is a networking and network policy provider. Calico supports a flexible set of networking options designed to give you the most efficient networking across a range of situations, including non-overlay and overlay networks, with or without BGP. Calico uses the same engine to enforce network policy for hosts, pods, and (if using Istio and Envoy) applications at the service mesh layer.

  • canal: a composition of calico and flannel plugins.

  • cilium: layer 3/4 networking (as well as layer 7 to protect and secure application protocols), supports dynamic insertion of BPF bytecode into the Linux kernel to implement security services, networking and visibility logic.

  • weave: Weave is a lightweight container overlay network that doesn't require an external K/V database cluster. (Please refer to weave troubleshooting documentation).

  • kube-ovn: Kube-OVN integrates the OVN-based Network Virtualization with Kubernetes. It offers an advanced Container Network Fabric for Enterprises.

  • kube-router: Kube-router is a L3 CNI for Kubernetes networking aiming to provide operational simplicity and high performance: it uses IPVS to provide Kube Services Proxy (if setup to replace kube-proxy), iptables for network policies, and BGP for ods L3 networking (with optionally BGP peering with out-of-cluster BGP peers). It can also optionally advertise routes to Kubernetes cluster Pods CIDRs, ClusterIPs, ExternalIPs and LoadBalancerIPs.

  • macvlan: Macvlan is a Linux network driver. Pods have their own unique Mac and Ip address, connected directly the physical (layer 2) network.

  • multus: Multus is a meta CNI plugin that provides multiple network interface support to pods. For each interface Multus delegates CNI calls to secondary CNI plugins such as Calico, macvlan, etc.

The choice is defined with the variable kube_network_plugin. There is also an option to leverage built-in cloud provider networking instead. See also Network checker.

Ingress Plugins

  • nginx: the NGINX Ingress Controller.

  • metallb: the MetalLB bare-metal service LoadBalancer provider.

Community docs and resources

Tools and projects on top of Kubespray

CI Tests

Build graphs

CI/end-to-end tests sponsored by: CNCF, Equinix Metal, OVHcloud, ELASTX.

See the test matrix for details.