cluster

package
v0.4.2 Latest Latest
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 Go to latest Published: Aug 24, 2021 License: Apache-2.0 Imports: 47 Imported by: 9

Documentation

Overview

Package cluster implements clusterctl cluster functionality.

Index

Constants

This section is empty.

Variables

This section is empty.

Functions

This section is empty.

Types

type AllowCAPIContract added in v0.3.15 

type AllowCAPIContract struct {
	Contract string
}

AllowCAPIContract instructs CheckCAPIContract to tolerate management clusters with Cluster API with the given contract. NOTE: This allows clusterctl upgrade to work on management clusters with old contract.

func (AllowCAPIContract) Apply added in v0.3.15 

func (t AllowCAPIContract) Apply(in *CheckCAPIContractOptions)

Apply applies this configuration to the given CheckCAPIContractOptions.

type AllowCAPINotInstalled added in v0.3.15 

type AllowCAPINotInstalled struct{}

AllowCAPINotInstalled instructs CheckCAPIContract to tolerate management clusters without Cluster API installed yet. NOTE: This allows clusterctl init to run on empty management clusters.

func (AllowCAPINotInstalled) Apply added in v0.3.15 

func (t AllowCAPINotInstalled) Apply(in *CheckCAPIContractOptions)

Apply applies this configuration to the given CheckCAPIContractOptions.

type CertManagerClient 

type CertManagerClient interface {
	// EnsureInstalled makes sure cert-manager is running and its API is available.
	// This is required to install a new provider.
	EnsureInstalled() error

	// EnsureLatestVersion checks the cert-manager version currently installed, and if it is
	// older than the version currently suggested by clusterctl, upgrades it.
	EnsureLatestVersion() error

	// PlanUpgrade retruns a CertManagerUpgradePlan with information regarding
	// a cert-manager upgrade if necessary.
	PlanUpgrade() (CertManagerUpgradePlan, error)

	// Images return the list of images required for installing the cert-manager.
	Images() ([]string, error)
}

CertManagerClient has methods to work with cert-manager components in the cluster.

type CertManagerUpgradePlan added in v0.3.10 

type CertManagerUpgradePlan struct {
	ExternallyManaged bool
	From, To          string
	ShouldUpgrade     bool
}

CertManagerUpgradePlan defines the upgrade plan if cert-manager needs to be upgraded to a different version.

type CheckCAPIContractOption added in v0.3.15 

type CheckCAPIContractOption interface {
	// Apply applies this configuration to the given CheckCAPIContractOptions.
	Apply(*CheckCAPIContractOptions)
}

CheckCAPIContractOption is some configuration that modifies options for CheckCAPIContract.

type CheckCAPIContractOptions added in v0.3.15 

type CheckCAPIContractOptions struct {
	// AllowCAPINotInstalled instructs CheckCAPIContract to tolerate management clusters without Cluster API installed yet.
	AllowCAPINotInstalled bool

	// AllowCAPIContract instructs CheckCAPIContract to tolerate management clusters with Cluster API with the given contract.
	AllowCAPIContract string
}

CheckCAPIContractOptions contains options for CheckCAPIContract.

type Client 

type Client interface {
	// Kubeconfig returns the kubeconfig used to access to a management cluster.
	Kubeconfig() Kubeconfig

	// Proxy return the Proxy used for operating objects in the management cluster.
	Proxy() Proxy

	// CertManager returns a CertManagerClient that can be user for
	// operating the cert-manager components in the cluster.
	CertManager() CertManagerClient

	// ProviderComponents returns a ComponentsClient object that can be user for
	// operating provider components objects in the management cluster (e.g. the CRDs, controllers, RBAC).
	ProviderComponents() ComponentsClient

	// ProviderInventory returns a InventoryClient object that can be user for
	// operating provider inventory stored in the management cluster (e.g. the list of installed providers/versions).
	ProviderInventory() InventoryClient

	// ProviderInstaller returns a ProviderInstaller that enforces consistency rules for provider installation,
	// trying to prevent e.g. controllers fighting for objects, inconsistent versions, etc.
	ProviderInstaller() ProviderInstaller

	// ObjectMover returns an ObjectMover that implements support for moving Cluster API objects (e.g. clusters, AWS clusters, machines, etc.).
	// from one management cluster to another management cluster.
	ObjectMover() ObjectMover

	// ProviderUpgrader returns a ProviderUpgrader that supports upgrading Cluster API providers.
	ProviderUpgrader() ProviderUpgrader

	// Template has methods to work with templates stored in the cluster.
	Template() TemplateClient

	// WorkloadCluster has methods for fetching kubeconfig of workload cluster from management cluster.
	WorkloadCluster() WorkloadCluster
}

Client is used to interact with a management cluster. A management cluster contains following categories of objects: - provider components (e.g. the CRDs, controllers, RBAC) - provider inventory items (e.g. the list of installed providers/versions) - provider objects (e.g. clusters, AWS clusters, machines etc.)

func New 

func New(kubeconfig Kubeconfig, configClient config.Client, options ...Option) Client

New returns a cluster.Client.

type ComponentsClient 

type ComponentsClient interface {
	// Create creates the provider components in the management cluster.
	Create(objs []unstructured.Unstructured) error

	// Delete deletes the provider components from the management cluster.
	// The operation is designed to prevent accidental deletion of user created objects, so
	// it is required to explicitly opt-in for the deletion of the namespace where the provider components are hosted
	// and for the deletion of the provider's CRDs.
	Delete(options DeleteOptions) error

	// DeleteWebhookNamespace deletes the core provider webhook namespace (eg. capi-webhook-system).
	// This is required when upgrading to v1alpha4 where webhooks are included in the controller itself.
	DeleteWebhookNamespace() error
}

ComponentsClient has methods to work with provider components in the cluster.

type DeleteOptions 

type DeleteOptions struct {
	Provider         clusterctlv1.Provider
	IncludeNamespace bool
	IncludeCRDs      bool
}

DeleteOptions holds options for ComponentsClient.Delete func.

type InstallOptions added in v0.4.1 

type InstallOptions struct {
	WaitProviders       bool
	WaitProviderTimeout time.Duration
}

InstallOptions defines the options used to configure installation.

type InventoryClient 

type InventoryClient interface {
	// EnsureCustomResourceDefinitions installs the CRD required for creating inventory items, if necessary.
	// Nb. In order to provide a simpler out-of-the box experience, the inventory CRD
	// is embedded in the clusterctl binary.
	EnsureCustomResourceDefinitions() error

	// Create an inventory item for a provider instance installed in the cluster.
	Create(clusterctlv1.Provider) error

	// List returns the inventory items for all the provider instances installed in the cluster.
	List() (*clusterctlv1.ProviderList, error)

	// GetDefaultProviderName returns the default provider for a given ProviderType.
	// In case there is only a single provider for a given type, e.g. only the AWS infrastructure Provider, it returns
	// this as the default provider; In case there are more provider of the same type, there is no default provider.
	GetDefaultProviderName(providerType clusterctlv1.ProviderType) (string, error)

	// GetProviderVersion returns the version for a given provider.
	GetProviderVersion(provider string, providerType clusterctlv1.ProviderType) (string, error)

	// GetProviderNamespace returns the namespace for a given provider.
	GetProviderNamespace(provider string, providerType clusterctlv1.ProviderType) (string, error)

	// CheckCAPIContract checks the Cluster API version installed in the management cluster, and fails if this version
	// does not match the current one supported by clusterctl.
	CheckCAPIContract(...CheckCAPIContractOption) error

	// CheckSingleProviderInstance ensures that only one instance of a provider is running, returns error otherwise.
	CheckSingleProviderInstance() error
}

InventoryClient exposes methods to interface with a cluster's provider inventory.

type Kubeconfig added in v0.3.4 

type Kubeconfig struct {
	// Path to the kubeconfig file
	Path string
	// Specify context within the kubeconfig file. If empty, cluster client
	// will use the current context.
	Context string
}

Kubeconfig is a type that specifies inputs related to the actual kubeconfig.

type ObjectMover 

type ObjectMover interface {
	// Move moves all the Cluster API objects existing in a namespace (or from all the namespaces if empty) to a target management cluster.
	Move(namespace string, toCluster Client, dryRun bool) error
	// Backup saves all the Cluster API objects existing in a namespace (or from all the namespaces if empty) to a target management cluster.
	Backup(namespace string, directory string) error
	// Restore restores all the Cluster API objects existing in a configured directory to a target management cluster.
	Restore(toCluster Client, directory string) error
}

ObjectMover defines methods for moving Cluster API objects to another management cluster.

type Option 

type Option func(*clusterClient)

Option is a configuration option supplied to New.

func InjectPollImmediateWaiter 

func InjectPollImmediateWaiter(pollImmediateWaiter PollImmediateWaiter) Option

InjectPollImmediateWaiter allows to override the default PollImmediateWaiter used by clusterctl.

func InjectProxy 

func InjectProxy(proxy Proxy) Option

InjectProxy allows to override the default proxy used by clusterctl.

func InjectRepositoryFactory 

func InjectRepositoryFactory(factory RepositoryClientFactory) Option

InjectRepositoryFactory allows to override the default factory used for creating RepositoryClient objects.

func InjectYamlProcessor added in v0.3.7 

func InjectYamlProcessor(p yaml.Processor) Option

InjectYamlProcessor allows you to override the yaml processor that the cluster client uses. By default, the SimpleProcessor is used. This is true even if a nil processor is injected.

type PollImmediateWaiter 

type PollImmediateWaiter func(interval, timeout time.Duration, condition wait.ConditionFunc) error

PollImmediateWaiter tries a condition func until it returns true, an error, or the timeout is reached.

type ProviderInstaller 

type ProviderInstaller interface {
	// Add adds a provider to the install queue.
	// NB. By deferring the installation, the installer service can perform validation of the target state of the management cluster
	// before actually starting the installation of new providers.
	Add(repository.Components)

	// Install performs the installation of the providers ready in the install queue.
	Install(InstallOptions) ([]repository.Components, error)

	// Validate performs steps to validate a management cluster by looking at the current state and the providers in the queue.
	// The following checks are performed in order to ensure a fully operational cluster:
	// - There must be only one instance of the same provider
	// - All the providers in must support the same API Version of Cluster API (contract)
	Validate() error

	// Images returns the list of images required for installing the providers ready in the install queue.
	Images() []string
}

ProviderInstaller defines methods for enforcing consistency rules for provider installation.

type ProviderUpgrader 

type ProviderUpgrader interface {
	// Plan returns a set of suggested Upgrade plans for the management cluster, and more specifically:
	//   - Upgrade to the latest version in the the v1alpha3 series: ....
	//   - Upgrade to the latest version in the the v1alpha4 series: ....
	Plan() ([]UpgradePlan, error)

	// ApplyPlan executes an upgrade following an UpgradePlan generated by clusterctl.
	ApplyPlan(clusterAPIVersion string) error

	// ApplyCustomPlan plan executes an upgrade using the UpgradeItems provided by the user.
	ApplyCustomPlan(providersToUpgrade ...UpgradeItem) error
}

ProviderUpgrader defines methods for supporting provider upgrade.

type Proxy 

type Proxy interface {
	// GetConfig returns the rest.Config
	GetConfig() (*rest.Config, error)

	// CurrentNamespace returns the namespace from the current context in the kubeconfig file
	CurrentNamespace() (string, error)

	// ValidateKubernetesVersion returns an error if management cluster version less than minimumKubernetesVersion
	ValidateKubernetesVersion() error

	// NewClient returns a new controller runtime Client object for working on the management cluster
	NewClient() (client.Client, error)

	// ListResources returns all the Kubernetes objects with the given labels existing the listed namespaces.
	ListResources(labels map[string]string, namespaces ...string) ([]unstructured.Unstructured, error)
}

Proxy defines a client proxy interface.

type ProxyOption added in v0.3.4 

type ProxyOption func(p *proxy)

ProxyOption defines a function that can change proxy options.

func InjectKubeconfigPaths added in v0.3.6 

func InjectKubeconfigPaths(paths []string) ProxyOption

InjectKubeconfigPaths sets the kubeconfig paths loading rules.

func InjectProxyTimeout added in v0.3.4 

func InjectProxyTimeout(t time.Duration) ProxyOption

InjectProxyTimeout sets the proxy timeout.

type RepositoryClientFactory 

type RepositoryClientFactory func(provider config.Provider, configClient config.Client, options ...repository.Option) (repository.Client, error)

RepositoryClientFactory defines a function that returns a new repository.Client.

type TemplateClient 

type TemplateClient interface {
	// GetFromConfigMap returns a workload cluster template from the given ConfigMap.
	GetFromConfigMap(namespace, name, dataKey, targetNamespace string, skipTemplateProcess bool) (repository.Template, error)

	// GetFromURL returns a workload cluster template from the given URL.
	GetFromURL(templateURL, targetNamespace string, skipTemplateProcess bool) (repository.Template, error)
}

TemplateClient has methods to work with templates stored in the cluster/out of the provider repository.

type TemplateClientInput added in v0.3.7 

type TemplateClientInput struct {
	// contains filtered or unexported fields
}

TemplateClientInput is an input struct for newTemplateClient.

type UpgradeItem 

type UpgradeItem struct {
	clusterctlv1.Provider
	NextVersion string
}

UpgradeItem defines a possible upgrade target for a provider in the management cluster.

func (*UpgradeItem) UpgradeRef 

func (u *UpgradeItem) UpgradeRef() string

UpgradeRef returns a string identifying the upgrade item; this string is derived by the provider.

type UpgradePlan 

type UpgradePlan struct {
	Contract  string
	Providers []UpgradeItem
}

UpgradePlan defines a list of possible upgrade targets for a management cluster.

type WorkloadCluster added in v0.3.9 

type WorkloadCluster interface {
	// GetKubeconfig returns the kubeconfig of the workload cluster.
	GetKubeconfig(workloadClusterName string, namespace string) (string, error)
}

WorkloadCluster has methods for fetching kubeconfig of workload cluster from management cluster.

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