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Merge pull request #8945 from hashicorp/fix_8777 

only set NoDevice if NoEphemeral is set; otherwise, legit block devic…
This commit is contained in:
Megan Marsh 2020-03-27 10:07:27 -07:00 committed by GitHub
parent a461b49e17 8ae6256c03
commit 0dc92991f4
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 58 additions and 19 deletions
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38
builder/amazon/common/step_run_spot_instance.go
View File

@ -49,24 +49,6 @@ type StepRunSpotInstance struct {
func (s *StepRunSpotInstance) CreateTemplateData(userData *string, az string,
state multistep.StateBag, marketOptions *ec2.LaunchTemplateInstanceMarketOptionsRequest) *ec2.RequestLaunchTemplateData {
blockDeviceMappings := s.LaunchMappings.BuildEC2BlockDeviceMappings()
if s.NoEphemeral {
// This is only relevant for windows guests. Ephemeral drives by
// default are assigned to drive names xvdca-xvdcz.
// When vms are launched from the AWS console, they're automatically
// removed from the block devices if the user hasn't said to use them,
// but the SDK does not perform this cleanup. The following code just
// manually removes the ephemeral drives from the mapping so that they
// don't clutter up console views and cause confusion.
log.Printf("no_ephemeral was set, so creating drives xvdca-xvdcz as empty mappings")
DefaultEphemeralDeviceLetters := "abcdefghijklmnopqrstuvwxyz"
for _, letter := range DefaultEphemeralDeviceLetters {
bd := &ec2.BlockDeviceMapping{
DeviceName: aws.String("xvdc" + string(letter)),
NoDevice: aws.String(""),
}
blockDeviceMappings = append(blockDeviceMappings, bd)
}
}
// Convert the BlockDeviceMapping into a
// LaunchTemplateBlockDeviceMappingRequest. These structs are identical,
// except for the EBS field -- on one, that field contains a
@ -80,11 +62,29 @@ func (s *StepRunSpotInstance) CreateTemplateData(userData *string, az string,
launchRequest := &ec2.LaunchTemplateBlockDeviceMappingRequest{
DeviceName: mapping.DeviceName,
Ebs: (*ec2.LaunchTemplateEbsBlockDeviceRequest)(mapping.Ebs),
NoDevice: mapping.NoDevice,
VirtualName: mapping.VirtualName,
}
launchMappingRequests = append(launchMappingRequests, launchRequest)
}
if s.NoEphemeral {
// This is only relevant for windows guests. Ephemeral drives by
// default are assigned to drive names xvdca-xvdcz.
// When vms are launched from the AWS console, they're automatically
// removed from the block devices if the user hasn't said to use them,
// but the SDK does not perform this cleanup. The following code just
// manually removes the ephemeral drives from the mapping so that they
// don't clutter up console views and cause confusion.
log.Printf("no_ephemeral was set, so creating drives xvdca-xvdcz as empty mappings")
DefaultEphemeralDeviceLetters := "abcdefghijklmnopqrstuvwxyz"
for _, letter := range DefaultEphemeralDeviceLetters {
launchRequest := &ec2.LaunchTemplateBlockDeviceMappingRequest{
DeviceName: aws.String("xvdc" + string(letter)),
NoDevice: aws.String(""),
}
launchMappingRequests = append(launchMappingRequests, launchRequest)
}
}
iamInstanceProfile := aws.String(state.Get("iamInstanceProfile").(string))

39
builder/amazon/common/step_run_spot_instance_test.go
View File

@ -94,3 +94,42 @@ func TestCreateTemplateData(t *testing.T) {
t.Fatalf("Template shouldn't contain instance profile if iamInstanceProfile is unset.")
}
}
func TestCreateTemplateData_NoEphemeral(t *testing.T) {
state := tStateSpot()
stepRunSpotInstance := getBasicStep()
stepRunSpotInstance.NoEphemeral = true
template := stepRunSpotInstance.CreateTemplateData(aws.String("userdata"), "az", state,
&ec2.LaunchTemplateInstanceMarketOptionsRequest{})
if len(template.BlockDeviceMappings) != 26 {
t.Fatalf("Should have created 26 mappings to keep ephemeral drives from appearing.")
}
// Now check that noEphemeral doesn't mess with the mappings in real life.
// state = tStateSpot()
// stepRunSpotInstance = getBasicStep()
// stepRunSpotInstance.NoEphemeral = true
// mappings := []*ec2.InstanceBlockDeviceMapping{
// &ec2.InstanceBlockDeviceMapping{
// DeviceName: "xvda",
// Ebs: {
// DeleteOnTermination: true,
// Status: "attaching",
// VolumeId: "vol-044cd49c330f21c05",
// },
// },
// &ec2.InstanceBlockDeviceMapping{
// DeviceName: "/dev/xvdf",
// Ebs: {
// DeleteOnTermination: false,
// Status: "attaching",
// VolumeId: "vol-0eefaf2d6ae35827e",
// },
// },
// }
// template = stepRunSpotInstance.CreateTemplateData(aws.String("userdata"), "az", state,
// &ec2.LaunchTemplateInstanceMarketOptionsRequest{})
// if len(*template.BlockDeviceMappings) != 26 {
// t.Fatalf("Should have created 26 mappings to keep ephemeral drives from appearing.")
// }
}