176 lines
7.7 KiB
Markdown
176 lines
7.7 KiB
Markdown
|
|
|
|
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, 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 :
|
|
|
|
### Ansible
|
|
|
|
# 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:
|
|
|
|
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 <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
|
|
- **Ubuntu** 16.04
|
|
- **CentOS/RHEL** 7
|
|
- **Fedora/CentOS** Atomic
|
|
- **openSUSE** Leap 42.3/Tumbleweed
|
|
|
|
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
|
|
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.
|
|
|
|
Network Plugins
|
|
---------------
|
|
|
|
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)).
|
|
|
|
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)
|
|
|
|
CI Tests
|
|
--------
|
|
|
|
[](https://gitlab.com/kubespray-ci/kubernetes-incubator__kubespray/pipelines)
|
|
|
|
CI/end-to-end tests sponsored by Google (GCE)
|
|
See the [test matrix](docs/test_cases.md) for details.
|