Policies
Network policies in the virtual cluster rely on the support for this feature in the host cluster. Make sure that your host cluster satisfies the network policy prerequisites.
Policies cover several different topics:
- Limit ranges control the storage / CPU / memory that each pod may request.
- Resource quotas.
- Pod security standards
- Network policies like network isolation.
- Admission webhooks
- Central Admission Control
- The admission controller is typically running on the host cluster, where the policies enforced by the webhook cannot be changed by the virtual cluster.
- Users could deploy their own admission webhooks to the virtual cluster, but there's little value in doing so, and this configuration is not concerned with that use case.
- Some examples of admission controller projects:
- It's common for organizations to develop an in-house collection of policies that can enforce naming standards etc.
You can use these settings separately for specific cases, or together, as in the case of Isolated Mode.
Config reference​
policies
required object pro​
Policies to enforce for the virtual cluster deployment as well as within the virtual cluster.
policies
required object pro​networkPolicy
required object pro​
NetworkPolicy specifies network policy options.
networkPolicy
required object pro​enabled
required boolean false pro​
Enabled defines if the network policy should be deployed by vCluster.
enabled
required boolean false pro​fallbackDns
required string 8.8.8.8 pro​
fallbackDns
required string 8.8.8.8 pro​outgoingConnections
required object pro​
outgoingConnections
required object pro​ipBlock
required object pro​
IPBlock describes a particular CIDR (Ex. "192.168.1.0/24","2001:db8::/64") that is allowed
to the pods matched by a NetworkPolicySpec's podSelector. The except entry describes CIDRs
that should not be included within this rule.
ipBlock
required object pro​cidr
required string 0.0.0.0/0 pro​
cidr is a string representing the IPBlock
Valid examples are "192.168.1.0/24" or "2001:db8::/64"
cidr
required string 0.0.0.0/0 pro​except
required string[] [100.64.0.0/10 127.0.0.0/8 10.0.0.0/8 172.16.0.0/12 192.168.0.0/16] pro​
except is a slice of CIDRs that should not be included within an IPBlock
Valid examples are "192.168.1.0/24" or "2001:db8::/64"
Except values will be rejected if they are outside the cidr range
except
required string[] [100.64.0.0/10 127.0.0.0/8 10.0.0.0/8 172.16.0.0/12 192.168.0.0/16] pro​platform
required boolean true pro​
Platform enables egress access towards loft platform
platform
required boolean true pro​annotations
required object {} pro​
Annotations are extra annotations for this resource.
annotations
required object {} pro​labels
required object {} pro​
Labels are extra labels for this resource.
labels
required object {} pro​podSecurityStandard
required string pro​
PodSecurityStandard that can be enforced can be one of: empty (""), baseline, restricted or privileged
podSecurityStandard
required string pro​resourceQuota
required object pro​
ResourceQuota specifies resource quota options.
resourceQuota
required object pro​enabled
required string|boolean auto pro​
Enabled defines if the resource quota should be enabled. "auto" means that if limitRange is enabled,
the resourceQuota will be enabled as well.
enabled
required string|boolean auto pro​quota
required object map[count/configmaps:100 count/endpoints:40 count/persistentvolumeclaims:20 count/pods:20 count/secrets:100 count/services:20 limits.cpu:20 limits.ephemeral-storage:160Gi limits.memory:40Gi requests.cpu:10 requests.ephemeral-storage:60Gi requests.memory:20Gi requests.storage:100Gi services.loadbalancers:1 services.nodeports:0] pro​
Quota are the quota options
quota
required object map[count/configmaps:100 count/endpoints:40 count/persistentvolumeclaims:20 count/pods:20 count/secrets:100 count/services:20 limits.cpu:20 limits.ephemeral-storage:160Gi limits.memory:40Gi requests.cpu:10 requests.ephemeral-storage:60Gi requests.memory:20Gi requests.storage:100Gi services.loadbalancers:1 services.nodeports:0] pro​scopeSelector
required object map[matchExpressions:[]] pro​
ScopeSelector is the resource quota scope selector
scopeSelector
required object map[matchExpressions:[]] pro​scopes
required string[] [] pro​
Scopes are the resource quota scopes
scopes
required string[] [] pro​annotations
required object {} pro​
Annotations are extra annotations for this resource.
annotations
required object {} pro​labels
required object {} pro​
Labels are extra labels for this resource.
labels
required object {} pro​limitRange
required object pro​
LimitRange specifies limit range options.
limitRange
required object pro​enabled
required string|boolean auto pro​
Enabled defines if the limit range should be deployed by vCluster. "auto" means that if resourceQuota is enabled,
the limitRange will be enabled as well.
enabled
required string|boolean auto pro​default
required object map[cpu:1 ephemeral-storage:8Gi memory:512Mi] pro​
Default are the default limits for the limit range
default
required object map[cpu:1 ephemeral-storage:8Gi memory:512Mi] pro​defaultRequest
required object map[cpu:100m ephemeral-storage:3Gi memory:128Mi] pro​
DefaultRequest are the default request options for the limit range
defaultRequest
required object map[cpu:100m ephemeral-storage:3Gi memory:128Mi] pro​max
required object {} pro​
Max are the max limits for the limit range
max
required object {} pro​min
required object {} pro​
Min are the min limits for the limit range
min
required object {} pro​annotations
required object {} pro​
Annotations are extra annotations for this resource.
annotations
required object {} pro​labels
required object {} pro​
Labels are extra labels for this resource.
labels
required object {} pro​centralAdmission
required object pro​
CentralAdmission defines what validating or mutating webhooks should be enforced within the virtual cluster.
centralAdmission
required object pro​validatingWebhooks
required object[] pro​
ValidatingWebhooks are validating webhooks that should be enforced in the virtual cluster
validatingWebhooks
required object[] pro​kind
required string pro​
Kind is a string value representing the REST resource this object represents.
Servers may infer this from the endpoint the client submits requests to.
kind
required string pro​apiVersion
required string pro​
APIVersion defines the versioned schema of this representation of an object.
Servers should convert recognized schemas to the latest internal value, and
may reject unrecognized values.
apiVersion
required string pro​metadata
required object pro​
Standard object metadata; More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#metadata.
metadata
required object pro​name
required string pro​
Name must be unique within a namespace. Is required when creating resources, although
some resources may allow a client to request the generation of an appropriate name
automatically. Name is primarily intended for creation idempotence and configuration
definition.
name
required string pro​labels
required object pro​
Map of string keys and values that can be used to organize and categorize
(scope and select) objects. May match selectors of replication controllers
and services.
labels
required object pro​annotations
required object pro​
Annotations is an unstructured key value map stored with a resource that may be
set by external tools to store and retrieve arbitrary metadata.
annotations
required object pro​webhooks
required object[] pro​
Webhooks is a list of webhooks and the affected resources and operations.
webhooks
required object[] pro​name
required string pro​
The name of the admission webhook.
Name should be fully qualified, e.g., imagepolicy.kubernetes.io, where
"imagepolicy" is the name of the webhook, and kubernetes.io is the name
of the organization.
name
required string pro​clientConfig
required object pro​
ClientConfig defines how to communicate with the hook.
clientConfig
required object pro​url
required string pro​
URL gives the location of the webhook, in standard URL form
(scheme://host:port/path
). Exactly one of url
or service
must be specified.
url
required string pro​scheme://host:port/path
). Exactly one of url
or service
must be specified.service
required object pro​
Service is a reference to the service for this webhook. Either
service
or url
must be specified.
If the webhook is running within the cluster, then you should use service
.
service
required object pro​service
or url
must be specified.service
.namespace
required string pro​
Namespace is the namespace of the service.
namespace
required string pro​name
required string pro​
Name is the name of the service.
name
required string pro​path
required string pro​
Path is an optional URL path which will be sent in any request to
this service.
path
required string pro​port
required integer pro​
If specified, the port on the service that hosting webhook.
Default to 443 for backward compatibility.
port
should be a valid port number (1-65535, inclusive).
port
required integer pro​port
should be a valid port number (1-65535, inclusive).caBundle
required string pro​
CABundle is a PEM encoded CA bundle which will be used to validate the webhook's server certificate.
If unspecified, system trust roots on the apiserver are used.
caBundle
required string pro​rules
required object[] pro​
Rules describes what operations on what resources/subresources the webhook cares about.
The webhook cares about an operation if it matches any Rule.
rules
required object[] pro​failurePolicy
required string pro​
FailurePolicy defines how unrecognized errors from the admission endpoint are handled -
allowed values are Ignore or Fail. Defaults to Fail.
failurePolicy
required string pro​matchPolicy
required string pro​
matchPolicy defines how the "rules" list is used to match incoming requests.
Allowed values are "Exact" or "Equivalent".
matchPolicy
required string pro​namespaceSelector
required object pro​
NamespaceSelector decides whether to run the webhook on an object based
on whether the namespace for that object matches the selector. If the
object itself is a namespace, the matching is performed on
object.metadata.labels. If the object is another cluster scoped resource,
it never skips the webhook.
namespaceSelector
required object pro​objectSelector
required object pro​
ObjectSelector decides whether to run the webhook based on if the
object has matching labels. objectSelector is evaluated against both
the oldObject and newObject that would be sent to the webhook, and
is considered to match if either object matches the selector.
objectSelector
required object pro​sideEffects
required string pro​
SideEffects states whether this webhook has side effects.
sideEffects
required string pro​timeoutSeconds
required integer pro​
TimeoutSeconds specifies the timeout for this webhook.
timeoutSeconds
required integer pro​admissionReviewVersions
required string[] pro​
AdmissionReviewVersions is an ordered list of preferred AdmissionReview
versions the Webhook expects.
admissionReviewVersions
required string[] pro​AdmissionReview
versions the Webhook expects.matchConditions
required object[] pro​
MatchConditions is a list of conditions that must be met for a request to be sent to this
webhook. Match conditions filter requests that have already been matched by the rules,
namespaceSelector, and objectSelector. An empty list of matchConditions matches all requests.
There are a maximum of 64 match conditions allowed.
matchConditions
required object[] pro​mutatingWebhooks
required object[] pro​
MutatingWebhooks are mutating webhooks that should be enforced in the virtual cluster
mutatingWebhooks
required object[] pro​kind
required string pro​
Kind is a string value representing the REST resource this object represents.
Servers may infer this from the endpoint the client submits requests to.
kind
required string pro​apiVersion
required string pro​
APIVersion defines the versioned schema of this representation of an object.
Servers should convert recognized schemas to the latest internal value, and
may reject unrecognized values.
apiVersion
required string pro​metadata
required object pro​
Standard object metadata; More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#metadata.
metadata
required object pro​name
required string pro​
Name must be unique within a namespace. Is required when creating resources, although
some resources may allow a client to request the generation of an appropriate name
automatically. Name is primarily intended for creation idempotence and configuration
definition.
name
required string pro​labels
required object pro​
Map of string keys and values that can be used to organize and categorize
(scope and select) objects. May match selectors of replication controllers
and services.
labels
required object pro​annotations
required object pro​
Annotations is an unstructured key value map stored with a resource that may be
set by external tools to store and retrieve arbitrary metadata.
annotations
required object pro​webhooks
required object[] pro​
Webhooks is a list of webhooks and the affected resources and operations.
webhooks
required object[] pro​reinvocationPolicy
required string pro​
reinvocationPolicy indicates whether this webhook should be called multiple times as part of a single admission evaluation.
Allowed values are "Never" and "IfNeeded".
reinvocationPolicy
required string pro​name
required string pro​
The name of the admission webhook.
Name should be fully qualified, e.g., imagepolicy.kubernetes.io, where
"imagepolicy" is the name of the webhook, and kubernetes.io is the name
of the organization.
name
required string pro​clientConfig
required object pro​
ClientConfig defines how to communicate with the hook.
clientConfig
required object pro​url
required string pro​
URL gives the location of the webhook, in standard URL form
(scheme://host:port/path
). Exactly one of url
or service
must be specified.
url
required string pro​scheme://host:port/path
). Exactly one of url
or service
must be specified.service
required object pro​
Service is a reference to the service for this webhook. Either
service
or url
must be specified.
If the webhook is running within the cluster, then you should use service
.
service
required object pro​service
or url
must be specified.service
.namespace
required string pro​
Namespace is the namespace of the service.
namespace
required string pro​name
required string pro​
Name is the name of the service.
name
required string pro​path
required string pro​
Path is an optional URL path which will be sent in any request to
this service.
path
required string pro​port
required integer pro​
If specified, the port on the service that hosting webhook.
Default to 443 for backward compatibility.
port
should be a valid port number (1-65535, inclusive).
port
required integer pro​port
should be a valid port number (1-65535, inclusive).caBundle
required string pro​
CABundle is a PEM encoded CA bundle which will be used to validate the webhook's server certificate.
If unspecified, system trust roots on the apiserver are used.
caBundle
required string pro​rules
required object[] pro​
Rules describes what operations on what resources/subresources the webhook cares about.
The webhook cares about an operation if it matches any Rule.
rules
required object[] pro​failurePolicy
required string pro​
FailurePolicy defines how unrecognized errors from the admission endpoint are handled -
allowed values are Ignore or Fail. Defaults to Fail.
failurePolicy
required string pro​matchPolicy
required string pro​
matchPolicy defines how the "rules" list is used to match incoming requests.
Allowed values are "Exact" or "Equivalent".
matchPolicy
required string pro​namespaceSelector
required object pro​
NamespaceSelector decides whether to run the webhook on an object based
on whether the namespace for that object matches the selector. If the
object itself is a namespace, the matching is performed on
object.metadata.labels. If the object is another cluster scoped resource,
it never skips the webhook.
namespaceSelector
required object pro​objectSelector
required object pro​
ObjectSelector decides whether to run the webhook based on if the
object has matching labels. objectSelector is evaluated against both
the oldObject and newObject that would be sent to the webhook, and
is considered to match if either object matches the selector.
objectSelector
required object pro​sideEffects
required string pro​
SideEffects states whether this webhook has side effects.
sideEffects
required string pro​timeoutSeconds
required integer pro​
TimeoutSeconds specifies the timeout for this webhook.
timeoutSeconds
required integer pro​admissionReviewVersions
required string[] pro​
AdmissionReviewVersions is an ordered list of preferred AdmissionReview
versions the Webhook expects.
admissionReviewVersions
required string[] pro​AdmissionReview
versions the Webhook expects.matchConditions
required object[] pro​
MatchConditions is a list of conditions that must be met for a request to be sent to this
webhook. Match conditions filter requests that have already been matched by the rules,
namespaceSelector, and objectSelector. An empty list of matchConditions matches all requests.
There are a maximum of 64 match conditions allowed.
matchConditions
required object[] pro​