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Overview ¶
Package schedulerhints extends the server create request with the ability to specify additional parameters which determine where the server will be created in the OpenStack cloud.
Example to Add a Server to a Server Group
schedulerHints := schedulerhints.SchedulerHints{
Group: "servergroup-uuid",
}
serverCreateOpts := servers.CreateOpts{
Name: "server_name",
ImageRef: "image-uuid",
FlavorRef: "flavor-uuid",
}
createOpts := schedulerhints.CreateOptsExt{
CreateOptsBuilder: serverCreateOpts,
SchedulerHints: schedulerHints,
}
server, err := servers.Create(computeClient, createOpts).Extract()
if err != nil {
panic(err)
}
Example to Place Server B on a Different Host than Server A
schedulerHints := schedulerhints.SchedulerHints{
DifferentHost: []string{
"server-a-uuid",
}
}
serverCreateOpts := servers.CreateOpts{
Name: "server_b",
ImageRef: "image-uuid",
FlavorRef: "flavor-uuid",
}
createOpts := schedulerhints.CreateOptsExt{
CreateOptsBuilder: serverCreateOpts,
SchedulerHints: schedulerHints,
}
server, err := servers.Create(computeClient, createOpts).Extract()
if err != nil {
panic(err)
}
Example to Place Server B on the Same Host as Server A
schedulerHints := schedulerhints.SchedulerHints{
SameHost: []string{
"server-a-uuid",
}
}
serverCreateOpts := servers.CreateOpts{
Name: "server_b",
ImageRef: "image-uuid",
FlavorRef: "flavor-uuid",
}
createOpts := schedulerhints.CreateOptsExt{
CreateOptsBuilder: serverCreateOpts,
SchedulerHints: schedulerHints,
}
server, err := servers.Create(computeClient, createOpts).Extract()
if err != nil {
panic(err)
}
Index ¶
Constants ¶
This section is empty.
Variables ¶
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Functions ¶
This section is empty.
Types ¶
type CreateOptsBuilder ¶
type CreateOptsBuilder interface {
ToServerSchedulerHintsCreateMap() (map[string]interface{}, error)
}
CreateOptsBuilder builds the scheduler hints into a serializable format.
type CreateOptsExt ¶
type CreateOptsExt struct {
servers.CreateOptsBuilder
// SchedulerHints provides a set of hints to the scheduler.
SchedulerHints CreateOptsBuilder
}
CreateOptsExt adds a SchedulerHints option to the base CreateOpts.
func (CreateOptsExt) ToServerCreateMap ¶
func (opts CreateOptsExt) ToServerCreateMap() (map[string]interface{}, error)
ToServerCreateMap adds the SchedulerHints option to the base server creation options.
type SchedulerHints ¶
type SchedulerHints struct {
// Group specifies a Server Group to place the instance in.
Group string
// DifferentHost will place the instance on a compute node that does not
// host the given instances.
DifferentHost []string
// SameHost will place the instance on a compute node that hosts the given
// instances.
SameHost []string
// Query is a conditional statement that results in compute nodes able to
// host the instance.
Query []interface{}
// TargetCell specifies a cell name where the instance will be placed.
TargetCell string `json:"target_cell,omitempty"`
// DifferentCell specifies cells names where an instance should not be placed.
DifferentCell []string `json:"different_cell,omitempty"`
// BuildNearHostIP specifies a subnet of compute nodes to host the instance.
BuildNearHostIP string
// AdditionalProperies are arbitrary key/values that are not validated by nova.
AdditionalProperties map[string]interface{}
}
SchedulerHints represents a set of scheduling hints that are passed to the OpenStack scheduler.
func (SchedulerHints) ToServerSchedulerHintsCreateMap ¶
func (opts SchedulerHints) ToServerSchedulerHintsCreateMap() (map[string]interface{}, error)
ToServerSchedulerHintsMap builds the scheduler hints into a serializable format.
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