OpenShift control plane nodes
E816917
OpenShift control plane nodes are dedicated cluster machines that run the core Kubernetes and OpenShift management components responsible for scheduling, API access, and overall cluster orchestration.
Observed surface forms (1)
| Surface form | Occurrences |
|---|---|
| OpenShift control plane node | 0 |
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
Kubernetes control plane node
ⓘ
OpenShift component ⓘ cluster node role ⓘ |
| belongsTo | control-plane machine pool ⓘ |
| communicatesWith |
OpenShift worker node
ⓘ
cluster etcd members ⓘ ingress load balancer ⓘ |
| configuredVia |
Ignition configuration
ⓘ
MachineConfig resources ⓘ |
| criticalFor |
cluster availability
ⓘ
cluster reliability ⓘ cluster scalability ⓘ |
| exposes |
Kubernetes API endpoint
ⓘ
OpenShift API endpoint ⓘ |
| hasRole | control plane ⓘ |
| managedBy |
OpenShift Cluster Version Operator
NERFINISHED
ⓘ
OpenShift Machine Config Operator NERFINISHED ⓘ |
| maySchedule | infrastructure workloads in some configurations ⓘ |
| monitoredBy | OpenShift monitoring stack NERFINISHED ⓘ |
| notIntendedFor | user application workloads ⓘ |
| oftenDeployedIn |
five-node control plane
ⓘ
odd number of nodes for etcd quorum ⓘ three-node control plane ⓘ |
| partOf | OpenShift cluster NERFINISHED ⓘ |
| requires |
high availability configuration
ⓘ
redundant instances for production ⓘ |
| responsibleFor |
API access to the cluster
ⓘ
admission control ⓘ authentication and authorization of API requests ⓘ cluster scheduling decisions ⓘ cluster state management ⓘ cluster-level reconciliation ⓘ control loop execution ⓘ overall cluster orchestration ⓘ |
| runs |
Kubernetes API server
NERFINISHED
ⓘ
OpenShift API server NERFINISHED ⓘ OpenShift controller manager NERFINISHED ⓘ etcd NERFINISHED ⓘ kube-apiserver NERFINISHED ⓘ kube-controller-manager NERFINISHED ⓘ kube-scheduler NERFINISHED ⓘ |
| securedBy |
TLS encryption for API traffic
ⓘ
role-based access control ⓘ |
| typicallyDeployedAs |
bare metal server
GENERATED
ⓘ
dedicated machine GENERATED ⓘ virtual machine GENERATED ⓘ |
| uses |
Kubernetes control plane components
ⓘ
etcd as backing store NERFINISHED ⓘ |
| usuallyRunsOn |
RHCOS
NERFINISHED
ⓘ
Red Hat Enterprise Linux CoreOS NERFINISHED ⓘ |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.