105 lines
4.9 KiB
Markdown
105 lines
4.9 KiB
Markdown
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---
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title: Installing Kubernetes On-premise/Cloud Providers with Kargo
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---
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<style>
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li>.highlighter-rouge {position:relative; top:3px;}
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</style>
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## Overview
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This quickstart helps to install a Kubernetes cluster hosted
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on GCE, Azure, OpenStack, AWS or Baremetal with
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[`Kargo`](https://github.com/kubernetes-incubator/kargo) tool.
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Kargo is a composition of [Ansible](http://docs.ansible.com/) playbooks,
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[inventory](https://github.com/kubernetes-incubator/kargo/blob/master/docs/ansible.md)
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generation CLI tools and domain knowledge for generic OS/Kubernetes
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clusters configuration management tasks. It provides:
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* [High available cluster](https://github.com/kubernetes-incubator/kargo/blob/master/docs/ha-mode.md)
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* [Composable](https://github.com/kubernetes-incubator/kargo/blob/master/docs/vars.md)
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(Choice of the network plugin, for instance)
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* Support most popular Linux
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[distributions](https://github.com/kubernetes-incubator/kargo#supported-linux-distributions)
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* Continuous integration tests
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To choose a tool which fits your use case the best, you may want to read this
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[comparison](https://github.com/kubernetes-incubator/kargo/blob/master/docs/comparisons.md)
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to [kubeadm](../kubeadm) and [kops](../kops).
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## Creating a cluster
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### (1/4) Ensure the underlay [requirements](https://github.com/kubernetes-incubator/kargo#requirements) are met
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#### Checklist
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* You must have cloud instances or baremetal nodes running for your future Kubernetes cluster.
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A way to achieve that is to use the
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[kargo-cli tool](https://github.com/kubernetes-incubator/kargo/blob/master/docs/getting-started.md).
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* Or provision baremetal hosts with a tool-of-your-choice or launch cloud instances,
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then create an inventory file for Ansible with this [tool](https://github.com/kubernetes-incubator/kargo/blob/master/contrib/inventory_generator/inventory_generator.py).
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### (2/4) Compose the deployment
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#### Checklist
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* Customize your deployment by usual Ansible meanings, which is
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[generating inventory](https://github.com/kubernetes-incubator/kargo/blob/master/docs/getting-started.md#building-your-own-inventory)
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and overriding default data [variables](https://github.com/kubernetes-incubator/kargo/blob/master/docs/vars.md).
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Or just stick with default values (Kargo will choose Flannel networking plugin for you
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then). This includes steps like deciding on the:
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* DNS [configuration options](https://github.com/kubernetes-incubator/kargo/blob/master/docs/dns-stack.md)
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* [Networking plugin](https://github.com/kubernetes-incubator/kargo#network-plugins) to use
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* [Versions](https://github.com/kubernetes-incubator/kargo#versions-of-supported-components)
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of components.
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* Additional node groups like [bastion hosts](https://github.com/kubernetes-incubator/kargo/blob/master/docs/ansible.md#bastion-host) or
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[Calico BGP route reflectors](https://github.com/kubernetes-incubator/kargo/blob/master/docs/calico.md#optional--bgp-peering-with-border-routers).
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* Plan custom deployment steps, if any, or use the default composition layer in the
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[cluster definition file](https://github.com/kubernetes-incubator/kargo/blob/master/cluster.yml).
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Taking the best from Ansible world, Kargo allows users to execute arbitrary steps via the
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``ansible-playbook`` with given inventory, playbooks, data overrides and tags, limits, batches
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of nodes to deploy and so on.
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* For large deployments (100+ nodes), you may want to
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[tweak things](https://github.com/kubernetes-incubator/kargo/blob/master/docs/large-deployments.md)
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for best results.
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### (3/4) Run the deployment
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#### Checklist
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* Apply deployment with
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[kargo-cli tool](https://github.com/kubernetes-incubator/kargo/blob/master/docs/getting-started.md)
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or ``ansible-playbook``
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[manual commands](https://github.com/kubernetes-incubator/kargo/blob/master/docs/getting-started.md#starting-custom-deployment).
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### (4/4) (Optional) verify inter-pods connectivity and DNS resolve with [Netchecker](https://github.com/kubernetes-incubator/kargo/blob/master/docs/netcheck.md)
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#### Checklist
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* Enusre the netchecker-agent's pods can resolve DNS requests and ping each over within the default namespace.
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Those pods mimic similar behavior of the rest of the workloads and serve as cluster health indicators.
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## Explore contributed add-ons
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See the [list of contributed playbooks](https://github.com/kubernetes-incubator/kargo/tree/master/contrib)
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to explore other deployment options.
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## What's next
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Kargo has quite a few [marks on the radar](https://github.com/kubernetes-incubator/kargo/blob/master/docs/roadmap.md).
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## Cleanup
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To delete your scratch cluster, you can apply the
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[reset role](https://github.com/kubernetes-incubator/kargo/blob/master/roles/reset/tasks/main.yml)
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with the manual ``ansible-playbook`` command.
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Note, that it is highly unrecommended to delete production clusters with the reset playbook!
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## Feedback
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* Slack Channel: [#kargo](https://kubernetes.slack.com/messages/kargo/)
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* [GitHub Issues](https://github.com/kubernetes-incubator/kargo/issues)
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