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Worker node(s)
| Protocol | Direction | Port Range | Purpose | Used By |
|---|---|---|---|---|
| TCP | Inbound | 10250 | Kubelet API | Self, Control plane |
| TCP | Inbound | 30000-32767 | NodePort Services† | All |
Ports and Protocols
- Tutorials
- Home
- Tasks
- Managing Secrets
- Manage HugePages
- Extend kubectl with plugins
- Schedule GPUs
- Administer a Cluster
- Securing a Cluster
- Manage Memory, CPU, and API Resources
- Configure Memory and CPU Quotas for a Namespace
- Configure Default Memory Requests and Limits for a Namespace
- Configure Default CPU Requests and Limits for a Namespace
- Configure Minimum and Maximum Memory Constraints for a Namespace
- Configure a Pod Quota for a Namespace
- Configure Minimum and Maximum CPU Constraints for a Namespace
- Namespaces Walkthrough
- Using CoreDNS for Service Discovery
- Access Clusters Using the Kubernetes API
- Upgrade A Cluster
- Operating etcd clusters for Kubernetes
- Use Cascading Deletion in a Cluster
- Set Kubelet parameters via a config file
- Autoscale the DNS Service in a Cluster
- Migrating from dockershim
- Find Out What Container Runtime is Used on a Node
- Troubleshooting CNI plugin-related errors
- Check whether dockershim removal affects you
- Migrate Docker Engine nodes from dockershim to cri-dockerd
- Migrating telemetry and security agents from dockershim
- Changing the Container Runtime on a Node from Docker Engine to containerd
- Switching From Polling to CRI Event-based Updates to Container Status
- Using sysctls in a Kubernetes Cluster
- Running Kubernetes Node Components as a Non-root User
- Debugging DNS Resolution
- Safely Drain a Node
- Declare Network Policy
- Reconfigure a Node’s Kubelet in a Live Cluster
- Configure a kubelet image credential provider
- IP Masquerade Agent User Guide
- Share a Cluster with Namespaces
- Configure Quotas for API Objects
- Migrate Replicated Control Plane To Use Cloud Controller Manager
- Install a Network Policy Provider
- Advertise Extended Resources for a Node
- Developing Cloud Controller Manager
- Using a KMS provider for data encryption
- Cloud Controller Manager Administration
- Using NodeLocal DNSCache in Kubernetes Clusters
- Administration with kubeadm
- Enable Or Disable A Kubernetes API
- Guaranteed Scheduling For Critical Add-On Pods
- Change the default StorageClass
- Reserve Compute Resources for System Daemons
- Limit Storage Consumption
- Utilizing the NUMA-aware Memory Manager
- Change the Reclaim Policy of a PersistentVolume
- Generate Certificates Manually
- Customizing DNS Service
- Verify Signed Kubernetes Artifacts
- Control Topology Management Policies on a node
- Encrypting Secret Data at Rest
- Control CPU Management Policies on the Node
- Install Tools
- Networking
- Manage Cluster Daemons
- Configure Pods and Containers
- Use a User Namespace With a Pod
- Assign Pods to Nodes
- Assign Extended Resources to a Container
- Assign Memory Resources to Containers and Pods
- Create static Pods
- Share Process Namespace between Containers in a Pod
- Enforce Pod Security Standards with Namespace Labels
- Resize CPU and Memory Resources assigned to Containers
- Configure a Pod to Use a ConfigMap
- Configure a Pod to Use a Volume for Storage
- Configure Liveness, Readiness and Startup Probes
- Migrate from PodSecurityPolicy to the Built-In PodSecurity Admission Controller
- Configure a Security Context for a Pod or Container
- Configure GMSA for Windows Pods and containers
- Pull an Image from a Private Registry
- Configure Service Accounts for Pods
- Configure Quality of Service for Pods
- Configure Pod Initialization
- Assign Pods to Nodes using Node Affinity
- Create a Windows HostProcess Pod
- Attach Handlers to Container Lifecycle Events
- Configure a Pod to Use a PersistentVolume for Storage
- Configure a Pod to Use a Projected Volume for Storage
- Configure RunAsUserName for Windows pods and containers
- Enforce Pod Security Standards by Configuring the Built-in Admission Controller
- Translate a Docker Compose File to Kubernetes Resources
- Assign CPU Resources to Containers and Pods
- Extend Kubernetes
- Run Jobs
- Parallel Processing using Expansions
- Job with Pod-to-Pod Communication
- Fine Parallel Processing Using a Work Queue
- Running Automated Tasks with a CronJob
- Handling retriable and non-retriable pod failures with Pod failure policy
- Coarse Parallel Processing Using a Work Queue
- Indexed Job for Parallel Processing with Static Work Assignment
- TLS
- Manage Kubernetes Objects
- Run Applications
- Specifying a Disruption Budget for your Application
- Run a Single-Instance Stateful Application
- HorizontalPodAutoscaler Walkthrough
- Horizontal Pod Autoscaling
- Delete a StatefulSet
- Force Delete StatefulSet Pods
- Run a Stateless Application Using a Deployment
- Accessing the Kubernetes API from a Pod
- Run a Replicated Stateful Application
- Scale a StatefulSet
- Access Applications in a Cluster
- Use Port Forwarding to Access Applications in a Cluster
- Communicate Between Containers in the Same Pod Using a Shared Volume
- Use a Service to Access an Application in a Cluster
- Configure DNS for a Cluster
- Access Services Running on Clusters
- Accessing Clusters
- Connect a Frontend to a Backend Using Services
- Create an External Load Balancer
- Set up Ingress on Minikube with the NGINX Ingress Controller
- List All Container Images Running in a Cluster
- Configure Access to Multiple Clusters
- Deploy and Access the Kubernetes Dashboard
- Monitoring, Logging, and Debugging
- Inject Data Into Applications
- Contribute
- Getting started
- Best practices
- Learning environment
- Production environment
- Container Runtimes
- Turnkey Cloud Solutions
- Installing Kubernetes with deployment tools
- Installing Kubernetes with Kubespray
- Installing Kubernetes with kOps
- Bootstrapping clusters with kubeadm
- Set up a High Availability etcd Cluster with kubeadm
- Creating Highly Available Clusters with kubeadm
- Options for Highly Available Topology
- Installing kubeadm
- Customizing components with the kubeadm API
- Dual-stack support with kubeadm
- Configuring each kubelet in your cluster using kubeadm
- Troubleshooting kubeadm
- Creating a cluster with kubeadm
- Concepts
- Security
- Security For Windows Nodes
- Service Accounts
- Multi-tenancy
- Overview of Cloud Native Security
- Kubernetes API Server Bypass Risks
- Good practices for Kubernetes Secrets
- Controlling Access to the Kubernetes API
- Role Based Access Control Good Practices
- Pod Security Policies
- Pod Security Standards
- Security Checklist
- Pod Security Admission
- Policies
- Extending Kubernetes
- Configuration
- Services, Load Balancing, and Networking
- Storage
- Cluster Architecture
- Overview
- Cluster Administration
- Windows in Kubernetes
- Workloads
- Containers
- Scheduling, Preemption and Eviction
- Security
- Reference
- Kubernetes Issues and Security
- Networking Reference
- API Access Control
- Authenticating
- TLS bootstrapping
- Managing Service Accounts
- Webhook Mode
- Mapping PodSecurityPolicies to Pod Security Standards
- Using ABAC Authorization
- Authorization Overview
- Using RBAC Authorization
- Authenticating with Bootstrap Tokens
- Certificates and Certificate Signing Requests
- Admission Controllers
- Kubelet authentication/authorization
- Using Node Authorization
- Validating Admission Policy
- Dynamic Admission Control
- Configuration APIs
- kubeadm Configuration (v1beta2)
- kube-proxy Configuration (v1alpha1)
- kubeconfig (v1)
- kube-scheduler Configuration (v1beta3)
- Kubelet Configuration (v1)
- kubeadm Configuration (v1beta3)
- kube-scheduler Configuration (v1beta2)
- kube-scheduler Configuration (v1)
- kube-apiserver Configuration (v1)
- Kubelet CredentialProvider (v1)
- Client Authentication (v1)
- kube-apiserver Configuration (v1alpha1)
- Kubelet Configuration (v1beta1)
- Client Authentication (v1beta1)
- Kubelet CredentialProvider (v1beta1)
- kube-apiserver Encryption Configuration (v1)
- WebhookAdmission Configuration (v1)
- Kubelet CredentialProvider (v1alpha1)
- Event Rate Limit Configuration (v1alpha1)
- kube-apiserver Audit Configuration (v1)
- kube-apiserver Admission (v1)
- Image Policy API (v1alpha1)
- kube-apiserver Configuration (v1beta1)
- Kubelet Configuration (v1alpha1)
- kube-controller-manager Configuration (v1alpha1)
- Well-Known Labels, Annotations and Taints
- Scheduling
- Other Tools
- Setup tools
- Kubernetes API
- Node Reference Information
- Glossary
- API Overview
- Instrumentation
- Command line tool (kubectl)
- Component tools
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