nodes.md

A Node's _____ condition is True when its network is not correctly configured

NetworkUnavailable

Addresses in a node's status include _____, InternalIP, ExternalIP

HostName

Addresses in a node's status include HostName, _____, ExternalIP

InternalIP

A node's DiskPressure condition is _____ when its disk capacity is low

True

A Node's heartbeats are sent by its _____.

kubelet

The _____ master components manages Node Health, assigns CIDR and updates a node's internal list of nodes.

Node Controller

When a node is reachable by kube-apiserver, but its Ready condition has remained False or Unknown for longer than the kube-controller-manager's pod-eviction-timeout, all Pods on the node are scheduled for deletion by the _____ controller

node

The _____ assigns a Node's a CIDR block, synchronizes its internal list of other Nodes, and monitors its health.

Node Controller

Worker node Kubernetes components (_____ and kube-proxy) communicate with Master node components, specifically kube-apiserver.

kubelet

A Node's _____ condition is True when the node's memory is low

MemoryPressure

A Node's PIDPressure condition is _____ when there are too many processes running.

True

_____ node affinities can block a Pod from running on a node. Soft node affinities are suggestions to the scheduler. Both can be combined, and have multiple weights.

Hard

A taint's possible effects are PreferNoSchedule, NoSchedule, _____

NoExecute

The Kubernetes Master node runs kube-apiserver, _____, kube-controller-manager.

scheduler

The two types of Node Heartbeats are _____ and the Lease Object

NodeStatus updates

_____ allow a node to repel a set of Pods, based on certain properties of the node.

Taints

When a node is reachable by kube-apiserver, but its Ready condition has remained False or Unknown for longer than the _____'s pod-eviction-timeout, all Pods on the node are scheduled for deletion by the node controller

kube-controller-manager

"A node is in ""_____"" status when it is healthy and accepts pods."

Ready

Node heartbeats are stored inside the _____ namespace.

kube-node-lease

Taints are set on _____. Tolerations are set on Pods.

Nodes

A taint's possible effects are _____, NoSchedule, NoExecute

PreferNoSchedule

A node's status contains information about its Addresses, Conditions, _____ and Info.

Capacity/Allocatable

A Node's self-registration into the control plane is done by its _____.

kubelet

A _____ is a physical or virtual machine running Kubernetes workloads.

Node

Worker node Kubernetes components (kubelet and kube-proxy) communicate with Master node components, specifically _____.

kube-apiserver

A Node's MemoryPressure condition is _____ when the node's memory is low

True

A node's _____ condition is True when its disk capacity is low

DiskPressure

A node's status contains information about its _____, Conditions, Capacity/Allocatable and Info.

Addresses

"A Node's ""Ready"" status is Unknown when 40 seconds have passed since _____ has heard from the node."

the Node Controller

Pod _____ express a preference for Pods to be scheduled on the same node as a specific group of other Pods.

affinities

"A Node's ""Ready"" status is _____ when it's unhealthy and not accepting pods."

False

Node _____ attract Pods to nodes or repel Pods from nodes using specified attributes. For example, you can specify that a Pod can only run on a node in a specified availability zone.

affinities

The _____ watches for unschedulable pods and tries to consolidate currently deployed pods on a smaller number of nodes.

cluster autoscaler

A Node's _____ inform an incoming packet where in the node it should go to.

iptables

A node's status contains information about its Addresses, Conditions, Capacity/Allocatable and _____.

Info

The two types of Node Heartbeats are NodeStatus updates and _____

the Lease Object

A node's _____ describes the amount of resources available to be consumed by Pods.

Allocatable

A Pod won’t be scheduled on a Node that has a Taint defined, unless the Pod has a matching _____ defined.

Toleration

When a node is reachable by kube-apiserver, but its Ready condition has remained False or Unknown for longer than the kube-controller-manager's _____-timeout, all Pods on the node are scheduled for deletion by the node controller

pod-eviction

_____ allow a Pod to be scheduled on nodes with a specific taint. You can use them to run certain Pods only on dedicated nodes.

Tolerations

A node's status contains information about its Addresses, _____, Capacity/Allocatable and Info.

Conditions

Taints are set on Nodes. Tolerations are set on _____.

Pods

A Node's NetworkUnavailable condition is _____ when its network is not correctly configured

True

A Node's _____ status field describes general information about it, such as operating system and node component versions

Info

Addresses in a node's status include HostName, InternalIP, _____

ExternalIP

It's important to place your Pods across several _____ to ensure fault tolerance, as one of them may fail.

nodes

A Node's _____ condition is True when there are too many processes running.

PIDPressure

The Kubernetes Master node runs _____, scheduler, kube-controller-manager.

kube-apiserver

The _____ node runs kube-apiserver, scheduler, kube-controller-manager.

Kubernetes Master

A Pod won’t be scheduled on a Node that has a _____ defined, unless the Pod has a matching Toleration defined.

Taint

Hard node affinities can block a Pod from running on a node. _____ node affinities are suggestions to the scheduler. Both can be combined, and have multiple weights.

Soft

Worker node Kubernetes components (kubelet and _____) communicate with Master node components, specifically kube-apiserver.

kube-proxy

The cluster autoscaler watches for unschedulable pods and tries to consolidate currently deployed pods on a smaller number of _____.

nodes

The Kubernetes Master node runs kube-apiserver, scheduler, _____.

kube-controller-manager

A taint's possible effects are PreferNoSchedule, _____, NoExecute

NoSchedule

"A Node's ""Ready"" status is _____ when 40 seconds have passed since the Node Controller has heard from the node."

Unknown

The Cluster Autoscaler adjusts the number of _____ of a cluster.

nodes

You can prevent a kubelet from self-registering the node in the control-plane with the _____ flag.

--register-node=false

The cluster autoscaler watches for _____ pods and tries to consolidate currently deployed pods on a smaller number of nodes.

unschedulable