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![Kubernetes Logo](https://raw.githubusercontent.com/kubernetes-incubator/kubespray/master/docs/img/kubernetes-logo.png)
Deploy a Production Ready Kubernetes Cluster
============================================
If you have questions, join us on the [kubernetes slack](https://kubernetes.slack.com), channel **\#kubespray**.
-   Can be deployed on **AWS, GCE, Azure, OpenStack, vSphere or Baremetal**
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-   **Highly available** cluster
-   **Composable** (Choice of the network plugin for instance)
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-   Supports most popular **Linux distributions**
-   **Continuous integration tests**

To deploy the cluster you can use :

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    # Install dependencies from ``requirements.txt``
    sudo pip install -r requirements.txt

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

    # Update Ansible inventory file with inventory builder
    declare -a IPS=(10.10.1.3 10.10.1.4 10.10.1.5)
    CONFIG_FILE=inventory/mycluster/hosts.ini python3 contrib/inventory_builder/inventory.py ${IPS[@]}

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

    # Deploy Kubespray with Ansible Playbook
    ansible-playbook -i inventory/mycluster/hosts.ini cluster.yml

### Vagrant

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


If this returns the version of the software, you're good to go. If not, download and install Python from here <https://www.python.org/downloads/source/>
Install the necessary requirements

    sudo pip install -r requirements.txt
    vagrant up

Documents
---------

-   [Requirements](#requirements)
-   [Kubespray vs ...](docs/comparisons.md)
-   [Getting started](docs/getting-started.md)
-   [Ansible inventory and tags](docs/ansible.md)
-   [Integration with existing ansible repo](docs/integration.md)
-   [Deployment data variables](docs/vars.md)
-   [DNS stack](docs/dns-stack.md)
-   [HA mode](docs/ha-mode.md)
-   [Network plugins](#network-plugins)
-   [Vagrant install](docs/vagrant.md)
-   [CoreOS bootstrap](docs/coreos.md)
-   [Debian Jessie setup](docs/debian.md)
-   [openSUSE setup](docs/opensuse.md)
-   [Downloaded artifacts](docs/downloads.md)
-   [Cloud providers](docs/cloud.md)
-   [OpenStack](docs/openstack.md)
-   [AWS](docs/aws.md)
-   [Azure](docs/azure.md)
-   [vSphere](docs/vsphere.md)
-   [Large deployments](docs/large-deployments.md)
-   [Upgrades basics](docs/upgrades.md)
-   [Roadmap](docs/roadmap.md)

Supported Linux Distributions
-----------------------------

-   **Container Linux by CoreOS**
-   **Debian** Jessie, Stretch, Wheezy
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-   **Fedora/CentOS** Atomic
-   **openSUSE** Leap 42.3/Tumbleweed
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Note: Upstart/SysV init based OS types are not supported.

Supported Components
--------------------

-   Core
    -   [kubernetes](https://github.com/kubernetes/kubernetes) v1.11.2
    -   [etcd](https://github.com/coreos/etcd) v3.2.18
    -   [docker](https://www.docker.com/) v17.03 (see note)
    -   [rkt](https://github.com/rkt/rkt) v1.21.0 (see Note 2)
-   Network Plugin
    -   [calico](https://github.com/projectcalico/calico) v3.1.3
    -   [canal](https://github.com/projectcalico/canal) (given calico/flannel versions)
    -   [cilium](https://github.com/cilium/cilium) v1.2.0
    -   [contiv](https://github.com/contiv/install) v1.1.7
    -   [flanneld](https://github.com/coreos/flannel) v0.10.0
    -   [weave](https://github.com/weaveworks/weave) v2.4.0
-   Application
    -   [cephfs-provisioner](https://github.com/kubernetes-incubator/external-storage) v2.0.1-k8s1.11
    -   [cert-manager](https://github.com/jetstack/cert-manager) v0.4.1
    -   [ingress-nginx](https://github.com/kubernetes/ingress-nginx) v0.18.0
Note: kubernetes doesn't support newer docker versions. Among other things kubelet currently breaks 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).

Note 2: rkt support as docker alternative is limited to control plane (etcd and
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kubelet). Docker is still used for Kubernetes cluster workloads and network
plugins' related OS services. Also note, only one of the supported network
plugins can be deployed for a given single cluster.

Requirements
-   **Ansible v2.4 (or newer) and python-netaddr is installed on the machine
    that will run Ansible commands**
-   **Jinja 2.9 (or newer) is required to run the Ansible Playbooks**
-   The target servers must have **access to the Internet** in order to pull docker images.
-   The target servers are configured to allow **IPv4 forwarding**.
-   **Your ssh key must be copied** to all the servers part of your inventory.
-   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.
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You can choose between 6 network plugins. (default: `calico`, except Vagrant uses `flannel`)
-   [flannel](docs/flannel.md): gre/vxlan (layer 2) networking.
-   [calico](docs/calico.md): bgp (layer 3) networking.
-   [canal](https://github.com/projectcalico/canal): a composition of calico and flannel plugins.
-   [cilium](http://docs.cilium.io/en/latest/): 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.
-   [contiv](docs/contiv.md): supports vlan, vxlan, bgp and Cisco SDN networking. This plugin is able to
    apply firewall policies, segregate containers in multiple network and bridging pods onto physical networks.
-   [weave](docs/weave.md): Weave is a lightweight container overlay network that doesn't require an external K/V database cluster.
    (Please refer to `weave` [troubleshooting documentation](http://docs.weave.works/weave/latest_release/troubleshooting.html)).
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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](docs/netcheck.md).
Community docs and resources
----------------------------

-   [kubernetes.io/docs/getting-started-guides/kubespray/](https://kubernetes.io/docs/getting-started-guides/kubespray/)
-   [kubespray, monitoring and logging](https://github.com/gregbkr/kubernetes-kargo-logging-monitoring) by @gregbkr
-   [Deploy Kubernetes w/ Ansible & Terraform](https://rsmitty.github.io/Terraform-Ansible-Kubernetes/) by @rsmitty
-   [Deploy a Kubernetes Cluster with Kubespray (video)](https://www.youtube.com/watch?v=N9q51JgbWu8)

Tools and projects on top of Kubespray
--------------------------------------
-   [Digital Rebar Provision](https://github.com/digitalrebar/provision/blob/master/doc/integrations/ansible.rst)
-   [Fuel-ccp-installer](https://github.com/openstack/fuel-ccp-installer)
-   [Terraform Contrib](https://github.com/kubernetes-incubator/kubespray/tree/master/contrib/terraform)
[![Build graphs](https://gitlab.com/kubespray-ci/kubernetes-incubator__kubespray/badges/master/build.svg)](https://gitlab.com/kubespray-ci/kubernetes-incubator__kubespray/pipelines)
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CI/end-to-end tests sponsored by Google (GCE)
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See the [test matrix](docs/test_cases.md) for details.