builder/amazon: instances can be launched with a list of security groups

builder/amazon/common/run_config.go

@@ -20,6 +20,7 @@ type RunConfig struct {
 	SSHUsername          string   `mapstructure:"ssh_username"`
 	SSHPort              int      `mapstructure:"ssh_port"`
 	SecurityGroupId      string   `mapstructure:"security_group_id"`
+	SecurityGroupIds     []string `mapstructure:"security_group_ids"`
 	SubnetId             string   `mapstructure:"subnet_id"`
 	TemporaryKeyPairName string   `mapstructure:"temporary_key_pair_name"`
 	VpcId                string   `mapstructure:"vpc_id"`
@@ -73,11 +74,19 @@ func (c *RunConfig) Prepare(t *packer.ConfigTemplate) []error {
 		}
 	}
 
+	if c.SecurityGroupId != "" {
+		if len(c.SecurityGroupIds) > 0 {
+			errs = append(errs, fmt.Errorf("Only one of security_group_id or security_group_ids can be specified."))
+		} else {
+			c.SecurityGroupIds = []string{c.SecurityGroupId}
+			c.SecurityGroupId = ""
+		}
+	}
+
 	templates := map[string]*string{
 		"iam_instance_profile":    &c.IamInstanceProfile,
 		"instance_type":           &c.InstanceType,
 		"ssh_timeout":             &c.RawSSHTimeout,
-		"security_group_id":       &c.SecurityGroupId,
 		"ssh_username":            &c.SSHUsername,
 		"source_ami":              &c.SourceAmi,
 		"subnet_id":               &c.SubnetId,
@@ -94,6 +103,21 @@ func (c *RunConfig) Prepare(t *packer.ConfigTemplate) []error {
 		}
 	}
 
+	sliceTemplates := map[string][]string{
+		"security_group_ids": c.SecurityGroupIds,
+	}
+
+	for n, slice := range sliceTemplates {
+		for i, elem := range slice {
+			var err error
+			slice[i], err = t.Process(elem, nil)
+			if err != nil {
+				errs = append(
+					errs, fmt.Errorf("Error processing %s[%d]: %s", n, i, err))
+			}
+		}
+	}
+
 	c.sshTimeout, err = time.ParseDuration(c.RawSSHTimeout)
 	if err != nil {
 		errs = append(errs, fmt.Errorf("Failed parsing ssh_timeout: %s", err))

builder/amazon/common/step_run_source_instance.go

@@ -26,7 +26,7 @@ type StepRunSourceInstance struct {
 func (s *StepRunSourceInstance) Run(state multistep.StateBag) multistep.StepAction {
 	ec2conn := state.Get("ec2").(*ec2.EC2)
 	keyName := state.Get("keyPair").(string)
-	securityGroupId := state.Get("securityGroupId").(string)
+	securityGroupIds := state.Get("securityGroupIds").([]string)
 	ui := state.Get("ui").(packer.Ui)
 
 	userData := s.UserData
@@ -40,6 +40,11 @@ func (s *StepRunSourceInstance) Run(state multistep.StateBag) multistep.StepActi
 		userData = string(contents)
 	}
 
+	securityGroups := make([]ec2.SecurityGroup, len(securityGroupIds))
+	for n, securityGroupId := range securityGroupIds {
+		securityGroups[n] = ec2.SecurityGroup{Id: securityGroupId}
+	}
+
 	runOpts := &ec2.RunInstances{
 		KeyName:            keyName,
 		ImageId:            s.SourceAMI,
@@ -47,7 +52,7 @@ func (s *StepRunSourceInstance) Run(state multistep.StateBag) multistep.StepActi
 		UserData:           []byte(userData),
 		MinCount:           0,
 		MaxCount:           0,
-		SecurityGroups:     []ec2.SecurityGroup{ec2.SecurityGroup{Id: securityGroupId}},
+		SecurityGroups:     securityGroups,
 		IamInstanceProfile: s.IamInstanceProfile,
 		SubnetId:           s.SubnetId,
 		BlockDevices:       s.BlockDevices.BuildLaunchDevices(),

builder/amazon/common/step_security_group.go

@@ -12,7 +12,7 @@ import (
 )
 
 type StepSecurityGroup struct {
-	SecurityGroupId string
+	SecurityGroupIds []string
 	SSHPort          int
 	VpcId            string
 
@@ -23,9 +23,9 @@ func (s *StepSecurityGroup) Run(state multistep.StateBag) multistep.StepAction {
 	ec2conn := state.Get("ec2").(*ec2.EC2)
 	ui := state.Get("ui").(packer.Ui)
 
-	if s.SecurityGroupId != "" {
-		log.Printf("Using specified security group: %s", s.SecurityGroupId)
-		state.Put("securityGroupId", s.SecurityGroupId)
+	if len(s.SecurityGroupIds) > 0 {
+		log.Printf("Using specified security groups: %v", s.SecurityGroupIds)
+		state.Put("securityGroupIds", s.SecurityGroupIds)
 		return multistep.ActionContinue
 	}
 
@@ -70,7 +70,7 @@ func (s *StepSecurityGroup) Run(state multistep.StateBag) multistep.StepAction {
 	}
 
 	// Set some state data for use in future steps
-	state.Put("securityGroupId", s.createdGroupId)
+	state.Put("securityGroupIds", []string{s.createdGroupId})
 
 	return multistep.ActionContinue
 }

builder/amazon/ebs/builder.go

@@ -88,7 +88,7 @@ func (b *Builder) Run(ui packer.Ui, hook packer.Hook, cache packer.Cache) (packe
 			KeyPairName:  b.config.TemporaryKeyPairName,
 		},
 		&awscommon.StepSecurityGroup{
-			SecurityGroupId: b.config.SecurityGroupId,
+			SecurityGroupIds: b.config.SecurityGroupIds,
 			SSHPort:          b.config.SSHPort,
 			VpcId:            b.config.VpcId,
 		},

builder/amazon/instance/builder.go

@@ -191,7 +191,7 @@ func (b *Builder) Run(ui packer.Ui, hook packer.Hook, cache packer.Cache) (packe
 			KeyPairName:  b.config.TemporaryKeyPairName,
 		},
 		&awscommon.StepSecurityGroup{
-			SecurityGroupId: b.config.SecurityGroupId,
+			SecurityGroupIds: b.config.SecurityGroupIds,
 			SSHPort:          b.config.SSHPort,
 			VpcId:            b.config.VpcId,
 		},

website/source/docs/builders/amazon-ebs.html.markdown

@@ -97,6 +97,10 @@ Optional:
   access. Note that if this is specified, you must be sure the security
   group allows access to the `ssh_port` given below.
 
+* `security_group_ids` (array of string) - A list of security groups as
+  described above. Note that if this is specified, you must omit the
+  security_group_id.
+
 * `ssh_port` (int) - The port that SSH will be available on. This defaults
   to port 22.
 

website/source/docs/builders/amazon-instance.html.markdown

@@ -129,6 +129,10 @@ Optional:
   access. Note that if this is specified, you must be sure the security
   group allows access to the `ssh_port` given below.
 
+* `security_group_ids` (array of string) - A list of security groups as
+  described above. Note that if this is specified, you must omit the
+  security_group_id.
+
 * `ssh_port` (int) - The port that SSH will be available on. This defaults
   to port 22.