Difference between revisions of "Kubernetes"

Latest revision as of 11:48, 7 February 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:

Containers, Pods, Volumes, namespaces
Persistent Volumes subsystem provides an API for users and administrators that abstracts details of how storage is provided from how it is consumed
Ingress controllers
Complete list: statefulset.apps, replicaset.apps, deployment.apps, service, pod, job.batch, cronjob.batch, daemonset.apps, ClusterIP, NodePort
Joe Beda, Brendan Burns, and Craig McLuckie

Installation[edit]

See: Kubernetes installation and Kubernetes changelog/releases.

Tools[edit]

Information[edit]

kubeadm version
kubectl get nodes

Microk8s[edit]

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

Installation:
- snap install microk8s
- snap install microk8s --classic

Kubernetes log files ^[4][edit]

Kubernetes Ports[edit]

Kubernetes API: TCP 6443 ^[5]
kubelet listen on port 10250

Products[edit]

Red Hat OpenShift
Red Hat Advanced Cluster Management for Kubernetes
OKD community distribution
Canonical Charmed Kubernetes

Activities[edit]

Read Kubernetes changelog/versions: https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG.md
Read the History of Kubernetes: https://blog.risingstack.com/the-history-of-kubernetes/
Read wikitech documentation: https://wikitech.wikimedia.org/wiki/Portal:Toolforge/Admin/Kubernetes
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
Connect to K8s cluster
Kubernetes quiz
How to run ubuntu in docker
Get a shell to a running container

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]

Helm package manager
Rancher: Rancher Desktop
kim (Kubernetes Image Manager)
Kubernetes operator
Katacoda Kubernetes playground
CoreDNS
dnsPolicy:
Components: kube-proxy, kube-scheduler, kube-apiserver, kubelet, kubectl, kubeadm
CustomResourceDefinition (CRD)
Antrea
Kubeaudit
Kalm access control to cluster resources
LogDNA
Pixie
SecurityContext
Kubernetes troubleshooting
Replicated.com
Teleport
GitLab Kubernetes agent server (KAS)
registry.k8s.io
Kubernetes Control Plane

See also[edit]

Service mesh: Istio, Linkerd, Consul, containerpilot, AWS App Mesh, Kiali, INNOQ
Container orchestration: Kubernetes, Nomad, Docker Swarm, OpenShift, Mesos, Marathon, AWS Fargate
Kubernetes: distributions, tools, CKA, CKS, Kubernetes interfaces: CSI, CNI, installation, workloads, networking, kubeadm, Kubernetes API, Kubernetes API Server, kubectl, kubeadm, kubelet, kube-proxy, Cloud services: EKS, GKE, TKE, DKS, Helm, Kubernetes RBAC, Kubernetes deployments, Minikube, Rancher, OpenShift, Charmed Kubernetes, Ingress, Kubernetes scheduler, Kubernetes Finalizers, logging, Kubernetes operator, Orka, kind:, Kubernetes namespaces, Kubernetes dashboard, Kubernetes Metrics Server, Field Selectors, CoreDNS, CRI, Kubernetes Topology Manager, Kubernetes governance: (SIG, KEP), Kustomize, controllers, ReadinessProbe, LivenessProbe, KOPS, K9s, Kui, k3s, ImagePullBackOff, PDB, EndPoints, Kots, metadata, Karpenter, Replicated.com, Kubernetes Authenticating, Kubernetes timeline, Changelog/Versions, service accounts, Kubernetes Pod Lifecycle, Kubernetes Conformance Certified, Kubernetes backup, Kubernetes Pod Security Admission, tEKS, Kubernetes events, Kubernetes ports, Kubernetes policies, Connect, addons, DoKC, Kubernetes control plane, Kubernetes Federation, Kubernetes info, Kubetest2, Sidecar (Kubernetes)
Kubernetes cloud services: EKS, GKE (Anthos), AKS, Docker Kubernetes Service (DKS), TKE

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

[1] ttps://blog.powerupcloud.com/autoscaling-based-on-cpu-memory-in-kubernetes-part-ii-fe2e495bddd4

[2] ttps://docs.bitnami.com/kubernetes/how-to/configure-autoscaling-custom-metrics/

[3] ttps://snapcraft.io/blog/canonical-launches-microk8s-deploy-kubernetes-in-seconds

[4] ttps://kubernetes.io/docs/tasks/debug-application-cluster/debug-cluster/

[5] ttps://kubernetes.io/docs/reference/access-authn-authz/controlling-access/

[6] ttps://aws.amazon.com/blogs/aws/amazon-eks-now-generally-available/

[7] ttps://azure.microsoft.com/fr-fr/blog/introducing-azure-container-service-aks-managed-kubernetes-and-azure-container-registry-geo-replication/

[8] ttps://www.digitalocean.com/docs/kubernetes/overview/

[9] ttps://techcrunch.com/2018/05/02/digital-ocean-launches-its-container-platform/

[10] ttps://tech.economictimes.indiatimes.com/news/corporate/digitalocean-launches-kubernetes-based-container-service/64007829

[11] ttps://cloud.google.com/kubernetes-engine/

[12] ttps://cloud.google.com/kubernetes-engine/release-notes

[13] ttps://www.ibm.com/cloud/container-service

[14] ttps://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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@@ Line 1: / Line 1: @@
-'''[[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]]'''.
+'''[[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]].
-* [[Google Trends]]: https://trends.google.com/trends/explore?date=all&q=Kubernetes
 Kubernetes objects, concepts or subsystems:
-* [[Containers]], [[Pods]], [[Volumes (Kubernetes)|Volumes]]
+* [[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
-* [[Namespace|namespaces]]
+* [[Kubernetes: Ingress controllers|Ingress controllers]]
+* [[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>
+* [[Joe Beda]], [[Brendan Burns]], and [[Craig McLuckie]]
 == Installation ==
 See: [[Kubernetes installation]] and [[Kubernetes changelog|Kubernetes changelog/releases]].
+== Tools ==
+* <code>[[kubectl]]</code>
+* <code>[[kubeadm]]</code>
+* <code>[[eksctl]]</code>
+* [[K9s]]
+* [[Lens]]
+* [[Rancher]]
+* <code>[[tfk8s]]</code>
 == Information ==
@@ Line 23: / Line 31: @@
 ** <code>snap install microk8s --classic</code>
-== Kubernetes Log files <ref>https://kubernetes.io/docs/tasks/debug-application-cluster/debug-cluster/</ref>==
+== [[Kubernetes log files]] <ref>https://kubernetes.io/docs/tasks/debug-application-cluster/debug-cluster/</ref>==
-Master
-* <code>[[/var/log/kube-apiserver.log]]</code> - [[Kubernetes API Server|API Server]], responsible for serving the API
-* <code>[[/var/log/kube-scheduler.log]]</code> - Scheduler ([[kube-scheduler]]), responsible for making scheduling decisions
-* <code>/var/log/kube-controller-manager.log</code> - Controller that manages replication controllers
-* <code>[[etcd]]</code>
-Worker Nodes
-* <code>[[/var/log/kubelet.log]]</code> - [[Kubelet]], responsible for running [[containers]] on the node
-* <code>/var/log/kube-proxy.log</code> - Kube Proxy, responsible for service load balancing
 == Kubernetes Ports ==
@@ Line 52: / Line 51: @@
 * 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
+* [[Connect to K8s cluster]]
+* [[Kubernetes quiz]]
+* [[How to run ubuntu in docker]]
+* [[Get a shell to a running container]]
 == Kubernetes Cloud Service Providers ==
@@ Line 64: / Line 67: @@
 == Related terms ==
 * [[Helm]] [[package manager]]
-* [[Pod]], [[etcd]], [[Volume]], [[container]], [[Jobs]]
 * [[Rancher]]: [[Rancher Desktop]]
 * [[kim (Kubernetes Image Manager)]]
@@ Line 70: / Line 72: @@
 * [[Katacoda]] Kubernetes playground
 * [[CoreDNS]]
-* [[Control-plane]]
+* <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>
 * [[CustomResourceDefinition (CRD)]]
-* [[Joe Beda]], [[Brendan Burns]], and [[Craig McLuckie]]
 * [[Antrea]]
 * [[Kubeaudit]]
 * [[Kalm]] access control to [[cluster resources]]
 * [[LogDNA]]
+* [[Pixie]]
 * <code>[[SecurityContext]]</code>
-* [[Monitoring Kubernetes]]
+* [[Kubernetes troubleshooting]]
+* [[Replicated.com]]
+* [[Teleport]]
+* [[GitLab Kubernetes agent server (KAS)]]
+* [[registry.k8s.io]]
+* [[Kubernetes Control Plane]]
 == See also ==
-* {{microk8s}}
-* {{minikube}}
-* [[Peloton]], a unified resource scheduler developed by Uber <ref>https://eng.uber.com/open-sourcing-peloton/</ref>
-* {{Calico}}
 * {{Service mesh}}
-* [[Cilium]] API-aware Networking and Security
-* [[Jaeger]] [[tracing]]
 * {{Container orchestration}}
+* {{k8s}}
 * {{K8s cloud services}}
-* {{CKA}}
-* {{k8s}}
 [[Category:Linux containers]]

Difference between revisions of "Kubernetes"

Latest revision as of 11:48, 7 February 2024

Contents

Installation[edit]

Tools[edit]

Information[edit]

Microk8s[edit]

Kubernetes log files ^[4][edit]

Kubernetes Ports[edit]

Products[edit]

Activities[edit]

Kubernetes Cloud Service Providers[edit]

Kubernetes Timeline[edit]

Kubernetes adoption[edit]

Related terms[edit]

See also[edit]

Navigation menu

Personal tools

Namespaces

Variants

Views

More

Search

Navigation

Tools

Difference between revisions of "Kubernetes"

Latest revision as of 11:48, 7 February 2024

Contents

Installation[edit]

Tools[edit]

Information[edit]

Microk8s[edit]

Kubernetes log files [4][edit]

Kubernetes Ports[edit]

Products[edit]

Activities[edit]

Kubernetes Cloud Service Providers[edit]

Kubernetes Timeline[edit]

Kubernetes adoption[edit]

Related terms[edit]

See also[edit]

Navigation menu

Search

Kubernetes log files ^[4][edit]