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Convert site to Hugo (#8316) This commit converts content and layout to use Hugo.
2018-05-05 16:00:51 +00:00
---
Fold concept overview pages into section indexes Where an existing Concept section has an index and the first page is “Overview of X”, move the content of that overview into the index page itself. Also, configure redirects accordingly.
2020-06-22 22:14:24 +00:00
title: Cluster Administration
reviewers:
- davidopp
- lavalamp
Reorder concepts sections (#11032) Order after this PR: overview: 20 architecture: 30 containers: 40 workloads: 50 service-networking: 60 storage: 70 configuration: 80 policy: 90 cluster-administration: 100 extend-kubernetes: 110 Closes: #8570
2018-11-19 21:05:13 +00:00
weight: 100
Fold concept overview pages into section indexes Where an existing Concept section has an index and the first page is “Overview of X”, move the content of that overview into the index page itself. Also, configure redirects accordingly.
2020-06-22 22:14:24 +00:00
content_type: concept
Add descriptions to Concept sections Each section directly beneath Concepts gains a description.
2020-06-22 22:01:16 +00:00
description: >
Lower-level detail relevant to creating or administering a Kubernetes cluster.
Convert site to Hugo (#8316) This commit converts content and layout to use Hugo.
2018-05-05 16:00:51 +00:00
---
Fold concept overview pages into section indexes Where an existing Concept section has an index and the first page is “Overview of X”, move the content of that overview into the index page itself. Also, configure redirects accordingly.
2020-06-22 22:14:24 +00:00
<!-- overview -->
The cluster administration overview is for anyone creating or administering a Kubernetes cluster.
It assumes some familiarity with core Kubernetes [concepts](/docs/concepts/).
<!-- body -->
## Planning a cluster
See the guides in [Setup](/docs/setup/) for examples of how to plan, set up, and configure Kubernetes clusters. The solutions listed in this article are called *distros*.
Before choosing a guide, here are some considerations:
- Do you just want to try out Kubernetes on your computer, or do you want to build a high-availability, multi-node cluster? Choose distros best suited for your needs.
- Will you be using **a hosted Kubernetes cluster**, such as [Google Kubernetes Engine](https://cloud.google.com/kubernetes-engine/), or **hosting your own cluster**?
- Will your cluster be **on-premises**, or **in the cloud (IaaS)**? Kubernetes does not directly support hybrid clusters. Instead, you can set up multiple clusters.
- **If you are configuring Kubernetes on-premises**, consider which [networking model](/docs/concepts/cluster-administration/networking/) fits best.
- Will you be running Kubernetes on **"bare metal" hardware** or on **virtual machines (VMs)**?
- Do you **just want to run a cluster**, or do you expect to do **active development of Kubernetes project code**? If the
latter, choose an actively-developed distro. Some distros only use binary releases, but
offer a greater variety of choices.
- Familiarize yourself with the [components](/docs/admin/cluster-components/) needed to run a cluster.
Note: Not all distros are actively maintained. Choose distros which have been tested with a recent version of Kubernetes.
## Managing a cluster
* [Managing a cluster](/docs/tasks/administer-cluster/cluster-management/) describes several topics related to the lifecycle of a cluster: creating a new cluster, upgrading your cluster’s master and worker nodes, performing node maintenance (e.g. kernel upgrades), and upgrading the Kubernetes API version of a running cluster.
* Learn how to [manage nodes](/docs/concepts/nodes/node/).
* Learn how to set up and manage the [resource quota](/docs/concepts/policy/resource-quotas/) for shared clusters.
## Securing a cluster
* [Certificates](/docs/concepts/cluster-administration/certificates/) describes the steps to generate certificates using different tool chains.
* [Kubernetes Container Environment](/docs/concepts/containers/container-environment/) describes the environment for Kubelet managed containers on a Kubernetes node.
* [Controlling Access to the Kubernetes API](/docs/reference/access-authn-authz/controlling-access/) describes how to set up permissions for users and service accounts.
* [Authenticating](/docs/reference/access-authn-authz/authentication/) explains authentication in Kubernetes, including the various authentication options.
* [Authorization](/docs/reference/access-authn-authz/authorization/) is separate from authentication, and controls how HTTP calls are handled.
* [Using Admission Controllers](/docs/reference/access-authn-authz/admission-controllers/) explains plug-ins which intercepts requests to the Kubernetes API server after authentication and authorization.
* [Using Sysctls in a Kubernetes Cluster](/docs/concepts/cluster-administration/sysctl-cluster/) describes to an administrator how to use the `sysctl` command-line tool to set kernel parameters .
* [Auditing](/docs/tasks/debug-application-cluster/audit/) describes how to interact with Kubernetes' audit logs.
### Securing the kubelet
* [Master-Node communication](/docs/concepts/architecture/master-node-communication/)
* [TLS bootstrapping](/docs/reference/command-line-tools-reference/kubelet-tls-bootstrapping/)
* [Kubelet authentication/authorization](/docs/admin/kubelet-authentication-authorization/)
## Optional Cluster Services
* [DNS Integration](/docs/concepts/services-networking/dns-pod-service/) describes how to resolve a DNS name directly to a Kubernetes service.
* [Logging and Monitoring Cluster Activity](/docs/concepts/cluster-administration/logging/) explains how logging in Kubernetes works and how to implement it.