Difference between revisions of "Kubernetes"

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'''[[wikipedia:Kubernetes|Kubernetes]]''' ([[2014]]) (commonly stylized as K8s[3]) is an open-source [[Container-Orchestration]] system for automating deployment, autoscaling (based on CPU, memory<ref>https://blog.powerupcloud.com/autoscaling-based-on-cpu-memory-in-kubernetes-part-ii-fe2e495bddd4</ref> or custom metrics<ref>https://docs.bitnami.com/kubernetes/how-to/configure-autoscaling-custom-metrics/</ref>) and management of containerized applications.[4] It works with a range of container tools, including '''[[Docker]]'''.
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'''[[wikipedia:Kubernetes|Kubernetes]]''' (Jun [[2014]], [https://trends.google.com/trends/explore?date=all&q=Kubernetes Google trends]) is an open-source [[Container-Orchestration]] system for automating deployment, autoscaling (based on CPU, memory<ref>https://blog.powerupcloud.com/autoscaling-based-on-cpu-memory-in-kubernetes-part-ii-fe2e495bddd4</ref> or custom metrics<ref>https://docs.bitnami.com/kubernetes/how-to/configure-autoscaling-custom-metrics/</ref>) and management of containerized applications.[4] Kubernetes works with [[Docker]], <code>[[containerd]]</code>, and [[CRI-O]].
  
 
Kubernetes objects, concepts or subsystems:
 
Kubernetes objects, concepts or subsystems:
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* [[Containers]], [[Pods]], [[Volumes (Kubernetes)|Volumes]]
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* [[Containers]], [[Pods]], [[Volumes (Kubernetes)|Volumes]], [[Kubernetes namespaces|namespaces]]
 
* [[Persistent Volumes]] subsystem provides an [[API]] for users and administrators that abstracts details of how storage is provided from how it is consumed
 
* [[Persistent Volumes]] subsystem provides an [[API]] for users and administrators that abstracts details of how storage is provided from how it is consumed
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* [[Namespace|namespaces]]  
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* [[Kubernetes: Ingress controllers|Ingress controllers]]
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* [[kubectl get all -A|Complete list]]: <code>[[statefulset.apps]], [[replicaset.apps]], [[Kubernetes deployments|deployment.apps]], [[Kubernetes services|service]], [[Pod (Kubernetes)|pod]], [[job.batch]], [[Kubernetes CronJobs|cronjob.batch]], [[daemonset.apps]], [[ClusterIP]], [[NodePort]]</code>
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* [[Joe Beda]], [[Brendan Burns]], and [[Craig McLuckie]]
  
 
== Installation ==
 
== Installation ==
 
See: [[Kubernetes installation]] and [[Kubernetes changelog|Kubernetes changelog/releases]].
 
See: [[Kubernetes installation]] and [[Kubernetes changelog|Kubernetes changelog/releases]].
  
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== Tools ==
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* <code>[[kubectl]]</code>
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* <code>[[kubeadm]]</code>
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* <code>[[eksctl]]</code>
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* [[K9s]]
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* [[Lens]]
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* [[Rancher]]
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* <code>[[tfk8s]]</code>
  
 
== Information ==
 
== Information ==
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** <code>snap install microk8s --classic</code>
 
** <code>snap install microk8s --classic</code>
  
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== Kubernetes Log files <ref>https://kubernetes.io/docs/tasks/debug-application-cluster/debug-cluster/</ref>==
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== [[Kubernetes log files]] <ref>https://kubernetes.io/docs/tasks/debug-application-cluster/debug-cluster/</ref>==
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Master
 
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* <code>[[/var/log/kube-apiserver.log]]</code> - [[Kubernetes API Server|API Server]], responsible for serving the API
 
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* <code>[[/var/log/kube-scheduler.log]]</code> - Scheduler ([[kube-scheduler]]), responsible for making scheduling decisions
 
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* <code>/var/log/kube-controller-manager.log</code> - Controller that manages replication controllers
 
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* <code>[[etcd]]</code>
 
−
 
 
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Worker Nodes
 
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* <code>[[/var/log/kubelet.log]]</code> - [[Kubelet]], responsible for running [[containers]] on the node
 
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* <code>/var/log/kube-proxy.log</code> - Kube Proxy, responsible for service load balancing
 
  
 
== Kubernetes Ports ==
 
== Kubernetes Ports ==
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* Read Kubernetes [[Storage]] documentation: https://kubernetes.io/docs/concepts/storage/ and types of [[/Volumes/]] supported.
 
* Read Kubernetes [[Storage]] documentation: https://kubernetes.io/docs/concepts/storage/ and types of [[/Volumes/]] supported.
 
* Review Wikipedia [[Kubernetes]] [[Grafana]] statistics: https://grafana.wikimedia.org/d/G8zPL7-Wz/kubernetes-node?orgId=1&var-dc=eqiad%20prometheus%2Fk8s&var-instance=kubernetes1002.eqiad.wmnet
 
* Review Wikipedia [[Kubernetes]] [[Grafana]] statistics: https://grafana.wikimedia.org/d/G8zPL7-Wz/kubernetes-node?orgId=1&var-dc=eqiad%20prometheus%2Fk8s&var-instance=kubernetes1002.eqiad.wmnet
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* [[Connect to K8s cluster]]
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* [[Kubernetes quiz]]
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* [[How to run ubuntu in docker]]
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* [[Get a shell to a running container]]
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* [[Pull an Image from a Private Registry in Kubernetes|Pull an Image from a Private Registry]]
  
 
== Kubernetes Cloud Service Providers ==
 
== Kubernetes Cloud Service Providers ==
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== Related terms ==
 
== Related terms ==
 
* [[Helm]] [[package manager]]
 
* [[Helm]] [[package manager]]
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* [[Pod]], [[etcd]], [[Volume]], [[container]], [[Jobs]]
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* [[Rancher]]: [[Rancher Desktop]]
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* [[Rancher]]
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* [[kim (Kubernetes Image Manager)]]
 
* [[Kubernetes operator]]
 
* [[Kubernetes operator]]
 
* [[Katacoda]] Kubernetes playground
 
* [[Katacoda]] Kubernetes playground
 
* [[CoreDNS]]
 
* [[CoreDNS]]
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* [[Control-plane]]
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* <code>[[dnsPolicy:]]</code>
 
* Components: <code>[[kube-proxy]]</code>, <code>[[kube-scheduler]]</code>, <code>[[kube-apiserver]]</code>, <code>[[kubelet]]</code>, <code>[[kubectl]]</code>, <code>[[kubeadm]]</code>
 
* Components: <code>[[kube-proxy]]</code>, <code>[[kube-scheduler]]</code>, <code>[[kube-apiserver]]</code>, <code>[[kubelet]]</code>, <code>[[kubectl]]</code>, <code>[[kubeadm]]</code>
 
* [[CustomResourceDefinition (CRD)]]
 
* [[CustomResourceDefinition (CRD)]]
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* [[Joe Beda]], [[Brendan Burns]], and [[Craig McLuckie]]
 
 
* [[Antrea]]
 
* [[Antrea]]
 
* [[Kubeaudit]]
 
* [[Kubeaudit]]
 
* [[Kalm]] access control to [[cluster resources]]
 
* [[Kalm]] access control to [[cluster resources]]
 
* [[LogDNA]]
 
* [[LogDNA]]
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* [[Pixie]]
 
* <code>[[SecurityContext]]</code>
 
* <code>[[SecurityContext]]</code>
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* [[Monitoring Kubernetes]]
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* [[Kubernetes troubleshooting]]
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* [[kim (Kubernetes Image Manager)]]
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* [[Replicated.com]]
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* [[Teleport]]
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* [[GitLab Kubernetes agent server (KAS)]]
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* [[registry.k8s.io]]
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* [[Kubernetes Control Plane]]
  
 
== See also ==
 
== See also ==
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* {{microk8s}}
 
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* {{minikube}}
 
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* [[Peloton]], a unified resource scheduler developed by Uber <ref>https://eng.uber.com/open-sourcing-peloton/</ref>
 
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* {{Calico}}
 
 
* {{Service mesh}}
 
* {{Service mesh}}
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* [[Cilium]] API-aware Networking and Security
 
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* [[Jaeger]] [[tracing]]
 
 
* {{Container orchestration}}
 
* {{Container orchestration}}
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* {{k8s}}
 
* {{K8s cloud services}}
 
* {{K8s cloud services}}
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* {{CKA}}
 
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* {{k8s}}
 
  
  
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[[Category:Cloud computing]]
 
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[[Category:Software development]]
 
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[[Category:Server administration]]
 
 
[[Category:Linux containers]]
 
[[Category:Linux containers]]
 
[[Category:Kubernetes]]
 
[[Category:Kubernetes]]

Latest revision as of 20:26, 17 July 2024

Kubernetes (Jun 2014, Google trends) is an open-source Container-Orchestration system for automating deployment, autoscaling (based on CPU, memory[1] or custom metrics[2]) and management of containerized applications.[4] Kubernetes works with Docker, containerd, and CRI-O.

Kubernetes objects, concepts or subsystems:

Installation[edit]

See: Kubernetes installation and Kubernetes changelog/releases.

Tools[edit]

Information[edit]

Microk8s[edit]

MicroK8s single node Kubernetes solution available since December 2018[3]

  • Installation:

Kubernetes log files [4][edit]

Kubernetes Ports[edit]

See also OpenShift port requeriments: https://docs.openshift.com/container-platform/4.2/installing/installing_bare_metal/installing-bare-metal.html

Products[edit]

Activities[edit]

Kubernetes Cloud Service Providers[edit]

Kubernetes is offered as a service on multiple public clouds, including Amazon Web Services (EKS)[6] (since June 2018 in the US East (N. Virginia) and US West (Oregon) Regions), Microsoft Azure (AKS) since october 2017,[7] DigitalOcean[8] (since May 2018),[9][10] Google Kubernetes Engine (GKE) in Google Cloud Platform[11] (at least since November 2014),[12] IBM Cloud [13], Alibaba Cloud [14], Mail.Ru Cloud Solutions (since May 2018)[15] and Oracle Kubernetes Service. For a more comprehensive list you can check https://kubernetes.io/docs/setup/pick-right-solution/#hosted-solutions. Most of them if not all requires a valid credit card.

Kubernetes Timeline[edit]

Kubernetes adoption[edit]

  • August 16 2017: Github runs on Kubernetes: all web and API requests are served by containers running in Kubernetes clusters deployed on metal cloud.

Related terms[edit]

See also[edit]

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Source: https://en.wikiversity.org/wiki/DevOps/Kubernetes

  1. ↑ https://blog.powerupcloud.com/autoscaling-based-on-cpu-memory-in-kubernetes-part-ii-fe2e495bddd4
  2. ↑ https://docs.bitnami.com/kubernetes/how-to/configure-autoscaling-custom-metrics/
  3. ↑ https://snapcraft.io/blog/canonical-launches-microk8s-deploy-kubernetes-in-seconds
  4. ↑ https://kubernetes.io/docs/tasks/debug-application-cluster/debug-cluster/
  5. ↑ https://kubernetes.io/docs/reference/access-authn-authz/controlling-access/
  6. ↑ https://aws.amazon.com/blogs/aws/amazon-eks-now-generally-available/
  7. ↑ https://azure.microsoft.com/fr-fr/blog/introducing-azure-container-service-aks-managed-kubernetes-and-azure-container-registry-geo-replication/
  8. ↑ https://www.digitalocean.com/docs/kubernetes/overview/
  9. ↑ https://techcrunch.com/2018/05/02/digital-ocean-launches-its-container-platform/
  10. ↑ https://tech.economictimes.indiatimes.com/news/corporate/digitalocean-launches-kubernetes-based-container-service/64007829
  11. ↑ https://cloud.google.com/kubernetes-engine/
  12. ↑ https://cloud.google.com/kubernetes-engine/release-notes
  13. ↑ https://www.ibm.com/cloud/container-service
  14. ↑ https://www.alibabacloud.com/product/kubernetes
  15. ↑ "MCS – Mail.Ru Cloud Solutions". mcs.mail.ru (in русский). Retrieved 2018-12-05.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
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