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MKE 4 Documentation

Revert the Upgrade

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MKE 4 Documentation

Introduction
Concepts
Concepts
Getting started
Getting started
Upgrades
Upgrades
- Upgrade Scenarios
- Upgrade from MKE 3.7, 3.8 or 3.9
  Upgrade from MKE 3.7, 3.8 or 3.9
- Upgrade an existing MKE 4 cluster
  Upgrade an existing MKE 4 cluster
  - Upgrade Monitoring CRDs
  - Perform an MKE 4 to MKE 4+ Upgrade
Configuration
Configuration
- Authentication
  Authentication
  - Basic authentication
  - OIDC
  - SAML
  - LDAP
  - kubectl Setup
- Authorization
  Authorization
- Backup
  Backup
- Restore
  Restore
- Kubernetes components
  Kubernetes components
  - kubelet
  - kube-apiserver
  - Audit logging
  - kube-controller-manager
  - kube-scheduler
  - etcd
    
    etcd
    
    Configure etcd storage quota
    
    etcd maintenance service
    
    etcd maintenance service
    
    Kubernetes event cleanup and etcd compaction
    
    etcd defragmentation
    
    Maintenance operations scheduling
    
    Maintenance operations auditing
  - Secrets Store CSI Driver addon
- Add services
- Ingress
  Ingress
  - Gateway API
    
    Gateway API
    
    Configuration
    
    Support scenarios
  - Kubernetes Ingress
    
    Kubernetes Ingress
    
    TCP and UDP services
- Scale worker nodes
  Scale worker nodes
- Group Managed Service Accounts (gMSA)
- MetalLB load balancer
  MetalLB load balancer
- Monitoring
- System component resources
- Support bundle
- Telemetry
- Control Plane Load Balancer
- Child clusters
  Child clusters
  - Infrastructure options
    
    Infrastructure options
    
    AWS
    
    vSphere
  - kube-apiserver options
  - Network options
  - Audit logging options
  - Kubelet options
  - Drift detection options
  - Air gap options
  - Cloud provider options
  - Kubernetes provider specifications
  - MetalLB load balancer service
  - MKE 4 Dashboard service
  - Authentication options
  - Port ranges
- CoreDNS Lameduck
- MKE 4 Dashboard
- NVIDIA GPU Workloads
- Policy Controller
  Policy Controller
  - OPA Gatekeeper
  - Admission Controller
- Node Feature Discovery (NFD)
- Cloud providers
  Cloud providers
- TLS certificates
- Workload node deployment
- Component scheduling
- Multus
- NodeLocalDNS
- Configuration Drift Detection
- Container Network Interfaces
  Container Network Interfaces
- Virtualization
Release notes
Release notes
Tutorials
Tutorials
API specification
API specification
CLI reference
CLI reference
CIS Benchmarks
CIS Benchmarks
Changed - Licenses
Support, Services, Contact
Support, Services, Contact

Revert the Upgrade#

To revert a cluster upgraded to MKE 4 back to MKE 3:

Uninstall MKE 4.
Restore MKE 3 from a backup.

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