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| − | '''[[wikipedia:Kubernetes|Kubernetes]]''' ( | + | '''[[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]]'''. |
| + | * [[Google Trends]]: https://trends.google.com/trends/explore?date=all&q=Kubernetes | ||
Kubernetes objects, concepts or subsystems: | Kubernetes objects, concepts or subsystems: | ||
| − | * [[Containers]], [[Pods]], [[Volumes (Kubernetes)|Volumes | + | * [[Containers]], [[Pods]], [[Volumes (Kubernetes)|Volumes]] |
* [[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 | ||
| − | * [[ | + | * [[Namespace|namespaces]] |
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== Installation == | == Installation == | ||
See: [[Kubernetes installation]] and [[Kubernetes changelog|Kubernetes changelog/releases]]. | See: [[Kubernetes installation]] and [[Kubernetes changelog|Kubernetes changelog/releases]]. | ||
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== Information == | == Information == | ||
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** <code>snap install microk8s --classic</code> | ** <code>snap install microk8s --classic</code> | ||
| − | == | + | == 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> | ||
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| + | 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 == | == 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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== Kubernetes Cloud Service Providers == | == Kubernetes Cloud Service Providers == | ||
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== Related terms == | == Related terms == | ||
* [[Helm]] [[package manager]] | * [[Helm]] [[package manager]] | ||
| + | * [[Pod]], [[etcd]], [[Volume]], [[container]], [[Jobs]] | ||
* [[Rancher]]: [[Rancher Desktop]] | * [[Rancher]]: [[Rancher Desktop]] | ||
* [[kim (Kubernetes Image Manager)]] | * [[kim (Kubernetes Image Manager)]] | ||
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* [[Katacoda]] Kubernetes playground | * [[Katacoda]] Kubernetes playground | ||
* [[CoreDNS]] | * [[CoreDNS]] | ||
| − | * | + | * [[Control-plane]] |
* 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)]] | ||
| + | * [[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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* <code>[[SecurityContext]]</code> | * <code>[[SecurityContext]]</code> | ||
| − | * [[Kubernetes | + | * [[Monitoring Kubernetes]] |
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== See also == | == See also == | ||
| + | * {{microk8s}} | ||
| + | * {{minikube}} | ||
* {{Service mesh}} | * {{Service mesh}} | ||
* {{Container orchestration}} | * {{Container orchestration}} | ||
| + | * {{K8s cloud services}} | ||
| + | * {{CKA}} | ||
* {{k8s}} | * {{k8s}} | ||
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[[Category:Linux containers]] | [[Category:Linux containers]] | ||
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