Difference between revisions of "Kubelet"
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<code>kubelet</code> process in [[Kubernetes]] is responsible for running containers on the node | <code>kubelet</code> process in [[Kubernetes]] is responsible for running containers on the node | ||
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[[/var/log/kubelet.log]] | [[/var/log/kubelet.log]] | ||
| − | Kubelet listen on [[ | + | Kubelet listen on [[List of TCP ports|port 10250]] |
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== Installation == | == Installation == | ||
| − | * <code>[[snap install kubelet --classic]]</code> (snap stop kubelet.daemon or snap start kubelet.daemon) | + | * <code>[[snap install kubelet --classic]]</code> (<code>[[snap stop]] kubelet.daemon</code> or <code>[[snap start]] kubelet.daemon</code>) |
== Commands == | == Commands == | ||
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* liveness probes: (<code>[[livenessProbe]]</code>) | * liveness probes: (<code>[[livenessProbe]]</code>) | ||
* readiness probes: (<code>[[readinessProbe]]</code>) | * readiness probes: (<code>[[readinessProbe]]</code>) | ||
| − | * <code>systemctl stop snap.kubelet.daemon.service</code> | + | * <code>[[systemctl stop]] snap.kubelet.daemon.service</code> |
* <code>[[kubectl describe pods]] | grep [[Unhealthy]]</code> | * <code>[[kubectl describe pods]] | grep [[Unhealthy]]</code> | ||
== Activities == | == Activities == | ||
| − | * [[CKA: Understand | + | * [[CKA v1.15: Understand LivenessProbes and ReadinessProbes]] |
| + | |||
| + | == News == | ||
| + | * 05/2022 [[Kubernetes 1.24]]: <code>[[dockershim]]</code> removed from <code>[[kubelet]]</code> | ||
== See also == | == See also == | ||
Revision as of 16:32, 18 May 2022
kubelet process in Kubernetes is responsible for running containers on the node
/etc/kubernetes/kubelet.conf /var/log/kubelet.log
Kubelet listen on port 10250
[kubelet-check] The HTTP call equal to 'curl -sSL http://localhost:10248/healthz' failed with error: Get http://localhost:10248/healthz: dial tcp 127.0.0.1:10248: connect: connection refused.
Installation
snap install kubelet --classic(snap stop kubelet.daemonorsnap start kubelet.daemon)
Commands
systemctl start snap.kubelet.daemon.service systemctl stop snap.kubelet.daemon.service
snap start kubelet.daemon Started. systemctl status snap.kubelet.daemon.service
Networking
The Container Network Interface (CNI) plugin is selected by passing kubelet the --network-plugin=cni
Related terms
- liveness probes: (
livenessProbe) - readiness probes: (
readinessProbe) systemctl stop snap.kubelet.daemon.servicekubectl describe pods | grep Unhealthy
Activities
News
- 05/2022 Kubernetes 1.24:
dockershimremoved fromkubelet
See also
- Kubernetes Components,
kube-proxy, kube-scheduler, kube-apiserver, kubelet, kubectl, kubeadm, Kubernetes controller manager, Kubernetes controllers, Kubernetes Addons, Kubernetes Topology Manager - 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)
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