aws

package
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 Go to latest Published: Mar 16, 2017 License: Apache-2.0 Imports: 33 Imported by: 0

Documentation

Index

Constants

View Source 
const (
	// Provisioned IOPS SSD
	VolumeTypeIO1 = "io1"
	// General Purpose SSD
	VolumeTypeGP2 = "gp2"
	// Cold HDD (sc1)
	VolumeTypeSC1 = "sc1"
	// Throughput Optimized HDD
	VolumeTypeST1 = "st1"
)

AWS volume types

View Source 
const (
	MinTotalIOPS = 100
	MaxTotalIOPS = 20000
)

AWS provisioning limits. Source: http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/EBSVolumeTypes.html

View Source 
const (
	// ResourceLifecycleOwned is the value we use when tagging resources to indicate
	// that the resource is considered owned and managed by the cluster,
	// and in particular that the lifecycle is tied to the lifecycle of the cluster.
	ResourceLifecycleOwned = "owned"
	// ResourceLifecycleShared is the value we use when tagging resources to indicate
	// that the resource is shared between multiple clusters, and should not be destroyed
	// if the cluster is destroyed.
	ResourceLifecycleShared = "shared"
)
View Source 
const DefaultMaxEBSVolumes = 39

DefaultMaxEBSVolumes is the limit for volumes attached to an instance. Amazon recommends no more than 40; the system root volume uses at least one. See http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/volume_limits.html#linux-specific-volume-limits

View Source 
const DefaultVolumeType = "gp2"

DefaultVolumeType specifies which storage to use for newly created Volumes TODO: Remove when user/admin can configure volume types and thus we don't need hardcoded defaults.

View Source 
const MaxReadThenCreateRetries = 30

MaxReadThenCreateRetries sets the maximum number of attempts we will make when we read to see if something exists and then try to create it if we didn't find it. This can fail once in a consistent system if done in parallel In an eventually consistent system, it could fail unboundedly

View Source 
const ProviderName = "aws"

ProviderName is the name of this cloud provider.

View Source 
const ProxyProtocolPolicyName = "k8s-proxyprotocol-enabled"
View Source 
const ServiceAnnotationLoadBalancerAccessLogEmitInterval = "service.beta.kubernetes.io/aws-load-balancer-access-log-emit-interval"

ServiceAnnotationLoadBalancerAccessLogEmitInterval is the annotation used to specify access log emit interval.

View Source 
const ServiceAnnotationLoadBalancerAccessLogEnabled = "service.beta.kubernetes.io/aws-load-balancer-access-log-enabled"

ServiceAnnotationLoadBalancerAccessLogEnabled is the annotation used on the service to enable or disable access logs.

View Source 
const ServiceAnnotationLoadBalancerAccessLogS3BucketName = "service.beta.kubernetes.io/aws-load-balancer-access-log-s3-bucket-name"

ServiceAnnotationLoadBalancerAccessLogS3BucketName is the annotation used to specify access log s3 bucket name.

View Source 
const ServiceAnnotationLoadBalancerAccessLogS3BucketPrefix = "service.beta.kubernetes.io/aws-load-balancer-access-log-s3-bucket-prefix"

ServiceAnnotationLoadBalancerAccessLogS3BucketPrefix is the annotation used to specify access log s3 bucket prefix.

View Source 
const ServiceAnnotationLoadBalancerBEProtocol = "service.beta.kubernetes.io/aws-load-balancer-backend-protocol"

ServiceAnnotationLoadBalancerBEProtocol is the annotation used on the service to specify the protocol spoken by the backend (pod) behind a listener. If `http` (default) or `https`, an HTTPS listener that terminates the 

connection and parses headers is created.

If set to `ssl` or `tcp`, a "raw" SSL listener is used. If set to `http` and `aws-load-balancer-ssl-cert` is not used then a HTTP listener is used.

View Source 
const ServiceAnnotationLoadBalancerCertificate = "service.beta.kubernetes.io/aws-load-balancer-ssl-cert"

ServiceAnnotationLoadBalancerCertificate is the annotation used on the service to request a secure listener. Value is a valid certificate ARN. For more, see http://docs.aws.amazon.com/ElasticLoadBalancing/latest/DeveloperGuide/elb-listener-config.html CertARN is an IAM or CM certificate ARN, e.g. arn:aws:acm:us-east-1:123456789012:certificate/12345678-1234-1234-1234-123456789012

View Source 
const ServiceAnnotationLoadBalancerConnectionDrainingEnabled = "service.beta.kubernetes.io/aws-load-balancer-connection-draining-enabled"

ServiceAnnotationLoadBalancerConnectionDrainingEnabled is the annnotation used on the service to enable or disable connection draining.

View Source 
const ServiceAnnotationLoadBalancerConnectionDrainingTimeout = "service.beta.kubernetes.io/aws-load-balancer-connection-draining-timeout"

ServiceAnnotationLoadBalancerConnectionDrainingTimeout is the annotation used on the service to specify a connection draining timeout.

View Source 
const ServiceAnnotationLoadBalancerConnectionIdleTimeout = "service.beta.kubernetes.io/aws-load-balancer-connection-idle-timeout"

ServiceAnnotationLoadBalancerConnectionIdleTimeout is the annotation used on the service to specify the idle connection timeout.

View Source 
const ServiceAnnotationLoadBalancerCrossZoneLoadBalancingEnabled = "service.beta.kubernetes.io/aws-load-balancer-cross-zone-load-balancing-enabled"

ServiceAnnotationLoadBalancerCrossZoneLoadBalancingEnabled is the annotation used on the service to enable or disable cross-zone load balancing.

View Source 
const ServiceAnnotationLoadBalancerInternal = "service.beta.kubernetes.io/aws-load-balancer-internal"

ServiceAnnotationLoadBalancerInternal is the annotation used on the service to indicate that we want an internal ELB. Currently we accept only the value "0.0.0.0/0" - other values are an error. This lets us define more advanced semantics in future.

View Source 
const ServiceAnnotationLoadBalancerProxyProtocol = "service.beta.kubernetes.io/aws-load-balancer-proxy-protocol"

ServiceAnnotationLoadBalancerProxyProtocol is the annotation used on the service to enable the proxy protocol on an ELB. Right now we only accept the value "*" which means enable the proxy protocol on all ELB backends. In the future we could adjust this to allow setting the proxy protocol only on certain backends.

View Source 
const ServiceAnnotationLoadBalancerSSLPorts = "service.beta.kubernetes.io/aws-load-balancer-ssl-ports"

ServiceAnnotationLoadBalancerSSLPorts is the annotation used on the service to specify a comma-separated list of ports that will use SSL/HTTPS listeners. Defaults to '*' (all).

View Source 
const TagNameKubernetesClusterLegacy = "KubernetesCluster"

TagNameKubernetesClusterLegacy is the legacy tag name we use to differentiate multiple logically independent clusters running in the same AZ. The problem with it was that it did not allow shared resources.

View Source 
const TagNameKubernetesClusterPrefix = "kubernetes.io/cluster/"

TagNameKubernetesClusterPrefix is the tag name we use to differentiate multiple logically independent clusters running in the same AZ. The tag key = TagNameKubernetesClusterPrefix + clusterID The tag value is an ownership value

View Source 
const TagNameKubernetesService = "kubernetes.io/service-name"

TagNameKubernetesService is the tag name we use to differentiate multiple services. Used currently for ELBs only.

View Source 
const TagNameSubnetInternalELB = "kubernetes.io/role/internal-elb"

TagNameSubnetInternalELB is the tag name used on a subnet to designate that it should be used for internal ELBs

View Source 
const TagNameSubnetPublicELB = "kubernetes.io/role/elb"

TagNameSubnetPublicELB is the tag name used on a subnet to designate that it should be used for internet ELBs

Variables

View Source 
var WellKnownRegions = [...]string{

	"ap-northeast-1",
	"ap-northeast-2",
	"ap-south-1",
	"ap-southeast-1",
	"ap-southeast-2",
	"ca-central-1",
	"eu-central-1",
	"eu-west-1",
	"eu-west-2",
	"sa-east-1",
	"us-east-1",
	"us-east-2",
	"us-west-1",
	"us-west-2",

	"cn-north-1",
	"us-gov-west-1",
}

WellKnownRegions is the complete list of regions known to the AWS cloudprovider and credentialprovider.

Functions

func RecognizeRegion 

func RecognizeRegion(region string)

RecognizeRegion is called for each AWS region we know about. It currently registers a credential provider for that region. There are two paths to discovering a region:

  • we hard-code some well-known regions
  • if a region is discovered from instance metadata, we add that

func RecognizeWellKnownRegions 

func RecognizeWellKnownRegions()

RecognizeWellKnownRegions calls RecognizeRegion on each WellKnownRegion

func ResizeInstanceGroup 

func ResizeInstanceGroup(asg ASG, instanceGroupName string, size int) error

ResizeInstanceGroup sets the size of the specificed instancegroup Exported so it can be used by the e2e tests, which don't want to instantiate a full cloudprovider.

Types

type ASG 

type ASG interface {
	UpdateAutoScalingGroup(*autoscaling.UpdateAutoScalingGroupInput) (*autoscaling.UpdateAutoScalingGroupOutput, error)
	DescribeAutoScalingGroups(*autoscaling.DescribeAutoScalingGroupsInput) (*autoscaling.DescribeAutoScalingGroupsOutput, error)
}

ASG is a simple pass-through of the Autoscaling client interface, which allows for testing.

type Backoff 

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

Backoff manages a backoff that varies based on the recently observed failures

func (*Backoff) ComputeDelayForRequest 

func (b *Backoff) ComputeDelayForRequest(now time.Time) time.Duration

Computes the delay required for a request, also updating internal state to count this request

func (*Backoff) ReportError 

func (b *Backoff) ReportError()

Called when we observe a throttling error

type Cloud 

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

Cloud is an implementation of Interface, LoadBalancer and Instances for Amazon Web Services.

func (*Cloud) AddSSHKeyToAllInstances 

func (c *Cloud) AddSSHKeyToAllInstances(user string, keyData []byte) error

AddSSHKeyToAllInstances is currently not implemented.

func (*Cloud) AttachDisk 

func (c *Cloud) AttachDisk(diskName KubernetesVolumeID, nodeName types.NodeName, readOnly bool) (string, error)

AttachDisk implements Volumes.AttachDisk

func (*Cloud) Clusters 

func (c *Cloud) Clusters() (cloudprovider.Clusters, bool)

Clusters returns the list of clusters.

func (*Cloud) CreateDisk 

func (c *Cloud) CreateDisk(volumeOptions *VolumeOptions) (KubernetesVolumeID, error)

CreateDisk implements Volumes.CreateDisk

func (*Cloud) CreateRoute 

func (c *Cloud) CreateRoute(clusterName string, nameHint string, route *cloudprovider.Route) error

CreateRoute implements Routes.CreateRoute Create the described route

func (*Cloud) CurrentNodeName 

func (c *Cloud) CurrentNodeName(hostname string) (types.NodeName, error)

CurrentNodeName returns the name of the current node

func (*Cloud) DeleteDisk 

func (c *Cloud) DeleteDisk(volumeName KubernetesVolumeID) (bool, error)

DeleteDisk implements Volumes.DeleteDisk

func (*Cloud) DeleteRoute 

func (c *Cloud) DeleteRoute(clusterName string, route *cloudprovider.Route) error

DeleteRoute implements Routes.DeleteRoute Delete the specified route

func (*Cloud) DescribeInstanceGroup 

func (c *Cloud) DescribeInstanceGroup(instanceGroupName string) (InstanceGroupInfo, error)

Implement InstanceGroups.DescribeInstanceGroup Queries the cloud provider for information about the specified instance group

func (*Cloud) DetachDisk 

func (c *Cloud) DetachDisk(diskName KubernetesVolumeID, nodeName types.NodeName) (string, error)

DetachDisk implements Volumes.DetachDisk

func (*Cloud) DiskIsAttached 

func (c *Cloud) DiskIsAttached(diskName KubernetesVolumeID, nodeName types.NodeName) (bool, error)

DiskIsAttached implements Volumes.DiskIsAttached

func (*Cloud) DisksAreAttached 

func (c *Cloud) DisksAreAttached(nodeDisks map[types.NodeName][]KubernetesVolumeID) (map[types.NodeName]map[KubernetesVolumeID]bool, error)

func (*Cloud) EnsureLoadBalancer 

func (c *Cloud) EnsureLoadBalancer(clusterName string, apiService *v1.Service, nodes []*v1.Node) (*v1.LoadBalancerStatus, error)

EnsureLoadBalancer implements LoadBalancer.EnsureLoadBalancer

func (*Cloud) EnsureLoadBalancerDeleted 

func (c *Cloud) EnsureLoadBalancerDeleted(clusterName string, service *v1.Service) error

EnsureLoadBalancerDeleted implements LoadBalancer.EnsureLoadBalancerDeleted.

func (*Cloud) ExternalID 

func (c *Cloud) ExternalID(nodeName types.NodeName) (string, error)

ExternalID returns the cloud provider ID of the node with the specified nodeName (deprecated).

func (*Cloud) GetDiskPath 

func (c *Cloud) GetDiskPath(volumeName KubernetesVolumeID) (string, error)

GetDiskPath implements Volumes.GetDiskPath

func (*Cloud) GetLoadBalancer 

func (c *Cloud) GetLoadBalancer(clusterName string, service *v1.Service) (*v1.LoadBalancerStatus, bool, error)

GetLoadBalancer is an implementation of LoadBalancer.GetLoadBalancer

func (*Cloud) GetVolumeLabels 

func (c *Cloud) GetVolumeLabels(volumeName KubernetesVolumeID) (map[string]string, error)

GetVolumeLabels implements Volumes.GetVolumeLabels

func (*Cloud) GetZone 

func (c *Cloud) GetZone() (cloudprovider.Zone, error)

GetZone implements Zones.GetZone

func (*Cloud) InstanceID 

func (c *Cloud) InstanceID(nodeName types.NodeName) (string, error)

InstanceID returns the cloud provider ID of the node with the specified nodeName.

func (*Cloud) InstanceType 

func (c *Cloud) InstanceType(nodeName types.NodeName) (string, error)

InstanceType returns the type of the node with the specified nodeName.

func (*Cloud) Instances 

func (c *Cloud) Instances() (cloudprovider.Instances, bool)

Instances returns an implementation of Instances for Amazon Web Services.

func (*Cloud) ListRoutes 

func (c *Cloud) ListRoutes(clusterName string) ([]*cloudprovider.Route, error)

ListRoutes implements Routes.ListRoutes List all routes that match the filter

func (*Cloud) LoadBalancer 

func (c *Cloud) LoadBalancer() (cloudprovider.LoadBalancer, bool)

LoadBalancer returns an implementation of LoadBalancer for Amazon Web Services.

func (*Cloud) NodeAddresses 

func (c *Cloud) NodeAddresses(name types.NodeName) ([]v1.NodeAddress, error)

NodeAddresses is an implementation of Instances.NodeAddresses.

func (*Cloud) ProviderName 

func (c *Cloud) ProviderName() string

ProviderName returns the cloud provider ID.

func (*Cloud) ResizeInstanceGroup 

func (c *Cloud) ResizeInstanceGroup(instanceGroupName string, size int) error

Implement InstanceGroups.ResizeInstanceGroup Set the size to the fixed size

func (*Cloud) Routes 

func (c *Cloud) Routes() (cloudprovider.Routes, bool)

Routes returns an implementation of Routes for Amazon Web Services.

func (*Cloud) ScrubDNS 

func (c *Cloud) ScrubDNS(nameservers, searches []string) (nsOut, srchOut []string)

ScrubDNS filters DNS settings for pods.

func (*Cloud) UpdateLoadBalancer 

func (c *Cloud) UpdateLoadBalancer(clusterName string, service *v1.Service, nodes []*v1.Node) error

UpdateLoadBalancer implements LoadBalancer.UpdateLoadBalancer

func (*Cloud) Zones 

func (c *Cloud) Zones() (cloudprovider.Zones, bool)

Zones returns an implementation of Zones for Amazon Web Services.

type CloudConfig 

type CloudConfig struct {
	Global struct {
		// TODO: Is there any use for this?  We can get it from the instance metadata service
		// Maybe if we're not running on AWS, e.g. bootstrap; for now it is not very useful
		Zone string

		// The AWS VPC flag enables the possibility to run the master components
		// on a different aws account, on a different cloud provider or on-premise.
		// If the flag is set also the KubernetesClusterTag must be provided
		VPC string

		// KubernetesClusterTag is the legacy cluster id we'll use to identify our cluster resources
		KubernetesClusterTag string
		// KubernetesClusterTag is the cluster id we'll use to identify our cluster resources
		KubernetesClusterID string

		//The aws provider creates an inbound rule per load balancer on the node security
		//group. However, this can run into the AWS security group rule limit of 50 if
		//many LoadBalancers are created.
		//
		//This flag disables the automatic ingress creation. It requires that the user
		//has setup a rule that allows inbound traffic on kubelet ports from the
		//local VPC subnet (so load balancers can access it). E.g. 10.82.0.0/16 30000-32000.
		DisableSecurityGroupIngress bool

		//During the instantiation of an new AWS cloud provider, the detected region
		//is validated against a known set of regions.
		//
		//In a non-standard, AWS like environment (e.g. Eucalyptus), this check may
		//be undesirable.  Setting this to true will disable the check and provide
		//a warning that the check was skipped.  Please note that this is an
		//experimental feature and work-in-progress for the moment.  If you find
		//yourself in an non-AWS cloud and open an issue, please indicate that in the
		//issue body.
		DisableStrictZoneCheck bool
	}
}

CloudConfig wraps the settings for the AWS cloud provider.

type CrossRequestRetryDelay 

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

CrossRequestRetryDelay inserts delays before AWS calls, when we are observing RequestLimitExceeded errors Note that we share a CrossRequestRetryDelay across multiple AWS requests; this is a process-wide back-off, whereas the aws-sdk-go implements a per-request exponential backoff/retry

func NewCrossRequestRetryDelay 

func NewCrossRequestRetryDelay() *CrossRequestRetryDelay

Create a new CrossRequestRetryDelay

func (*CrossRequestRetryDelay) AfterRetry 

func (c *CrossRequestRetryDelay) AfterRetry(r *request.Request)

Added to the AfterRetry chain; called after any error

func (*CrossRequestRetryDelay) BeforeSign 

func (c *CrossRequestRetryDelay) BeforeSign(r *request.Request)

Added to the Sign chain; called before each request

type DeviceAllocator 

type DeviceAllocator interface {
	// GetNext returns a free device name or error when there is no free device
	// name. Only the device suffix is returned, e.g. "ba" for "/dev/xvdba".
	// It's up to the called to add appropriate "/dev/sd" or "/dev/xvd" prefix.
	GetNext(existingDevices ExistingDevices) (mountDevice, error)
}

On AWS, we should assign new (not yet used) device names to attached volumes. If we reuse a previously used name, we may get the volume "attaching" forever, see https://aws.amazon.com/premiumsupport/knowledge-center/ebs-stuck-attaching/. DeviceAllocator finds available device name, taking into account already assigned device names from ExistingDevices map. It tries to find the next device name to the previously assigned one (from previous DeviceAllocator call), so all available device names are used eventually and it minimizes device name reuse. All these allocations are in-memory, nothing is written to / read from /dev directory.

func NewDeviceAllocator 

func NewDeviceAllocator(lastIndex int) DeviceAllocator

Allocates device names according to scheme ba..bz, ca..cz it moves along the ring and always picks next device until device list is exhausted.

type EC2 

type EC2 interface {
	// Query EC2 for instances matching the filter
	DescribeInstances(request *ec2.DescribeInstancesInput) ([]*ec2.Instance, error)

	// Attach a volume to an instance
	AttachVolume(*ec2.AttachVolumeInput) (*ec2.VolumeAttachment, error)
	// Detach a volume from an instance it is attached to
	DetachVolume(request *ec2.DetachVolumeInput) (resp *ec2.VolumeAttachment, err error)
	// Lists volumes
	DescribeVolumes(request *ec2.DescribeVolumesInput) ([]*ec2.Volume, error)
	// Create an EBS volume
	CreateVolume(request *ec2.CreateVolumeInput) (resp *ec2.Volume, err error)
	// Delete an EBS volume
	DeleteVolume(*ec2.DeleteVolumeInput) (*ec2.DeleteVolumeOutput, error)

	DescribeSecurityGroups(request *ec2.DescribeSecurityGroupsInput) ([]*ec2.SecurityGroup, error)

	CreateSecurityGroup(*ec2.CreateSecurityGroupInput) (*ec2.CreateSecurityGroupOutput, error)
	DeleteSecurityGroup(request *ec2.DeleteSecurityGroupInput) (*ec2.DeleteSecurityGroupOutput, error)

	AuthorizeSecurityGroupIngress(*ec2.AuthorizeSecurityGroupIngressInput) (*ec2.AuthorizeSecurityGroupIngressOutput, error)
	RevokeSecurityGroupIngress(*ec2.RevokeSecurityGroupIngressInput) (*ec2.RevokeSecurityGroupIngressOutput, error)

	DescribeSubnets(*ec2.DescribeSubnetsInput) ([]*ec2.Subnet, error)

	CreateTags(*ec2.CreateTagsInput) (*ec2.CreateTagsOutput, error)

	DescribeRouteTables(request *ec2.DescribeRouteTablesInput) ([]*ec2.RouteTable, error)
	CreateRoute(request *ec2.CreateRouteInput) (*ec2.CreateRouteOutput, error)
	DeleteRoute(request *ec2.DeleteRouteInput) (*ec2.DeleteRouteOutput, error)

	ModifyInstanceAttribute(request *ec2.ModifyInstanceAttributeInput) (*ec2.ModifyInstanceAttributeOutput, error)
}

EC2 is an abstraction over AWS', to allow mocking/other implementations Note that the DescribeX functions return a list, so callers don't need to deal with paging TODO: Should we rename this to AWS (EBS & ELB are not technically part of EC2)

type EC2Metadata 

type EC2Metadata interface {
	// Query the EC2 metadata service (used to discover instance-id etc)
	GetMetadata(path string) (string, error)
}

EC2Metadata is an abstraction over the AWS metadata service.

type ELB 

type ELB interface {
	CreateLoadBalancer(*elb.CreateLoadBalancerInput) (*elb.CreateLoadBalancerOutput, error)
	DeleteLoadBalancer(*elb.DeleteLoadBalancerInput) (*elb.DeleteLoadBalancerOutput, error)
	DescribeLoadBalancers(*elb.DescribeLoadBalancersInput) (*elb.DescribeLoadBalancersOutput, error)
	RegisterInstancesWithLoadBalancer(*elb.RegisterInstancesWithLoadBalancerInput) (*elb.RegisterInstancesWithLoadBalancerOutput, error)
	DeregisterInstancesFromLoadBalancer(*elb.DeregisterInstancesFromLoadBalancerInput) (*elb.DeregisterInstancesFromLoadBalancerOutput, error)
	CreateLoadBalancerPolicy(*elb.CreateLoadBalancerPolicyInput) (*elb.CreateLoadBalancerPolicyOutput, error)
	SetLoadBalancerPoliciesForBackendServer(*elb.SetLoadBalancerPoliciesForBackendServerInput) (*elb.SetLoadBalancerPoliciesForBackendServerOutput, error)

	DetachLoadBalancerFromSubnets(*elb.DetachLoadBalancerFromSubnetsInput) (*elb.DetachLoadBalancerFromSubnetsOutput, error)
	AttachLoadBalancerToSubnets(*elb.AttachLoadBalancerToSubnetsInput) (*elb.AttachLoadBalancerToSubnetsOutput, error)

	CreateLoadBalancerListeners(*elb.CreateLoadBalancerListenersInput) (*elb.CreateLoadBalancerListenersOutput, error)
	DeleteLoadBalancerListeners(*elb.DeleteLoadBalancerListenersInput) (*elb.DeleteLoadBalancerListenersOutput, error)

	ApplySecurityGroupsToLoadBalancer(*elb.ApplySecurityGroupsToLoadBalancerInput) (*elb.ApplySecurityGroupsToLoadBalancerOutput, error)

	ConfigureHealthCheck(*elb.ConfigureHealthCheckInput) (*elb.ConfigureHealthCheckOutput, error)

	DescribeLoadBalancerAttributes(*elb.DescribeLoadBalancerAttributesInput) (*elb.DescribeLoadBalancerAttributesOutput, error)
	ModifyLoadBalancerAttributes(*elb.ModifyLoadBalancerAttributesInput) (*elb.ModifyLoadBalancerAttributesOutput, error)
}

ELB is a simple pass-through of AWS' ELB client interface, which allows for testing

type ExistingDevices 

type ExistingDevices map[mountDevice]awsVolumeID

ExistingDevices is a map of assigned devices. Presence of a key with a device name in the map means that the device is allocated. Value is irrelevant and can be used for anything that DeviceAllocator user wants. Only the relevant part of device name should be in the map, e.g. "ba" for "/dev/xvdba".

type IPPermissionSet 

type IPPermissionSet map[string]*ec2.IpPermission

func NewIPPermissionSet 

func NewIPPermissionSet(items ...*ec2.IpPermission) IPPermissionSet

func (IPPermissionSet) Difference 

func (s IPPermissionSet) Difference(s2 IPPermissionSet) IPPermissionSet

Difference returns a set of objects that are not in s2 For example: s1 = {a1, a2, a3} s2 = {a1, a2, a4, a5} s1.Difference(s2) = {a3} s2.Difference(s1) = {a4, a5}

func (IPPermissionSet) Equal 

func (s1 IPPermissionSet) Equal(s2 IPPermissionSet) bool

Equal returns true if and only if s1 is equal (as a set) to s2. Two sets are equal if their membership is identical. (In practice, this means same elements, order doesn't matter)

func (IPPermissionSet) Insert 

func (s IPPermissionSet) Insert(items ...*ec2.IpPermission)

Insert adds items to the set.

func (IPPermissionSet) IsSuperset 

func (s1 IPPermissionSet) IsSuperset(s2 IPPermissionSet) bool

IsSuperset returns true if and only if s1 is a superset of s2.

func (IPPermissionSet) Len 

func (s IPPermissionSet) Len() int

Len returns the size of the set.

func (IPPermissionSet) List 

func (s IPPermissionSet) List() []*ec2.IpPermission

List returns the contents as a slice. Order is not defined.

func (IPPermissionSet) Ungroup 

func (s IPPermissionSet) Ungroup() IPPermissionSet

Ungroup splits permissions out into individual permissions EC2 will combine permissions with the same port but different SourceRanges together, for example We ungroup them so we can process them

type InstanceGroupInfo 

type InstanceGroupInfo interface {
	// The number of instances currently running under control of this group
	CurrentSize() (int, error)
}

InstanceGroupInfo is returned by InstanceGroups.Describe, and exposes information about the group.

func DescribeInstanceGroup 

func DescribeInstanceGroup(asg ASG, instanceGroupName string) (InstanceGroupInfo, error)

DescribeInstanceGroup gets info about the specified instancegroup Exported so it can be used by the e2e tests, which don't want to instantiate a full cloudprovider.

type InstanceGroups 

type InstanceGroups interface {
	// Set the size to the fixed size
	ResizeInstanceGroup(instanceGroupName string, size int) error
	// Queries the cloud provider for information about the specified instance group
	DescribeInstanceGroup(instanceGroupName string) (InstanceGroupInfo, error)
}

InstanceGroups is an interface for managing cloud-managed instance groups / autoscaling instance groups TODO: Allow other clouds to implement this

type KubernetesVolumeID 

type KubernetesVolumeID string

KubernetesVolumeID represents the id for a volume in the kubernetes API; a few forms are recognized:

  • aws://<zone>/<awsVolumeId>
  • aws:///<awsVolumeId>
  • <awsVolumeId>

type ResourceLifecycle 

type ResourceLifecycle string

type Services 

type Services interface {
	Compute(region string) (EC2, error)
	LoadBalancing(region string) (ELB, error)
	Autoscaling(region string) (ASG, error)
	Metadata() (EC2Metadata, error)
}

Services is an abstraction over AWS, to allow mocking/other implementations

type VolumeOptions 

type VolumeOptions struct {
	CapacityGB       int
	Tags             map[string]string
	PVCName          string
	VolumeType       string
	AvailabilityZone string
	// IOPSPerGB x CapacityGB will give total IOPS of the volume to create.
	// Calculated total IOPS will be capped at MaxTotalIOPS.
	IOPSPerGB int
	Encrypted bool
	// fully qualified resource name to the key to use for encryption.
	// example: arn:aws:kms:us-east-1:012345678910:key/abcd1234-a123-456a-a12b-a123b4cd56ef
	KmsKeyId string
}

VolumeOptions specifies capacity and tags for a volume.

type Volumes 

type Volumes interface {
	// Attach the disk to the node with the specified NodeName
	// nodeName can be empty to mean "the instance on which we are running"
	// Returns the device (e.g. /dev/xvdf) where we attached the volume
	AttachDisk(diskName KubernetesVolumeID, nodeName types.NodeName, readOnly bool) (string, error)
	// Detach the disk from the node with the specified NodeName
	// nodeName can be empty to mean "the instance on which we are running"
	// Returns the device where the volume was attached
	DetachDisk(diskName KubernetesVolumeID, nodeName types.NodeName) (string, error)

	// Create a volume with the specified options
	CreateDisk(volumeOptions *VolumeOptions) (volumeName KubernetesVolumeID, err error)
	// Delete the specified volume
	// Returns true iff the volume was deleted
	// If the was not found, returns (false, nil)
	DeleteDisk(volumeName KubernetesVolumeID) (bool, error)

	// Get labels to apply to volume on creation
	GetVolumeLabels(volumeName KubernetesVolumeID) (map[string]string, error)

	// Get volume's disk path from volume name
	// return the device path where the volume is attached
	GetDiskPath(volumeName KubernetesVolumeID) (string, error)

	// Check if the volume is already attached to the node with the specified NodeName
	DiskIsAttached(diskName KubernetesVolumeID, nodeName types.NodeName) (bool, error)

	// Check if disks specified in argument map are still attached to their respective nodes.
	DisksAreAttached(map[types.NodeName][]KubernetesVolumeID) (map[types.NodeName]map[KubernetesVolumeID]bool, error)
}

Volumes is an interface for managing cloud-provisioned volumes TODO: Allow other clouds to implement this

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