software.amazon.awscdk.services.ec2

Interface ApplyCloudFormationInitOptions

All Known Implementing Classes:

ApplyCloudFormationInitOptions.Jsii$Proxy

@Generated(value="jsii-pacmak/1.71.0 (build f1f58ae)",
           date="2022-11-29T04:32:19.897Z")
public interface ApplyCloudFormationInitOptions

Options for applying CloudFormation init to an instance or instance group.

Example:

 Vpc vpc;
 InstanceType instanceType;
 IMachineImage machineImage;
 Instance.Builder.create(this, "Instance")
         .vpc(vpc)
         .instanceType(instanceType)
         .machineImage(machineImage)
         // Showing the most complex setup, if you have simpler requirements
         // you can use `CloudFormationInit.fromElements()`.
         .init(CloudFormationInit.fromConfigSets(ConfigSetProps.builder()
                 .configSets(Map.of(
                         // Applies the configs below in this order
                         "default", List.of("yumPreinstall", "config")))
                 .configs(Map.of(
                         "yumPreinstall", new InitConfig(List.of(InitPackage.yum("git"))),
                         "config", new InitConfig(List.of(InitFile.fromObject("/etc/stack.json", Map.of(
                                 "stackId", Stack.of(this).getStackId(),
                                 "stackName", Stack.of(this).getStackName(),
                                 "region", Stack.of(this).getRegion())), InitGroup.fromName("my-group"), InitUser.fromName("my-user"), InitPackage.rpm("http://mirrors.ukfast.co.uk/sites/dl.fedoraproject.org/pub/epel/8/Everything/x86_64/Packages/r/rubygem-git-1.5.0-2.el8.noarch.rpm")))))
                 .build()))
         .initOptions(ApplyCloudFormationInitOptions.builder()
                 // Optional, which configsets to activate (['default'] by default)
                 .configSets(List.of("default"))
                 // Optional, how long the installation is expected to take (5 minutes by default)
                 .timeout(Duration.minutes(30))
                 // Optional, whether to include the --url argument when running cfn-init and cfn-signal commands (false by default)
                 .includeUrl(true)
                 // Optional, whether to include the --role argument when running cfn-init and cfn-signal commands (false by default)
                 .includeRole(true)
                 .build())
         .build();
 

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static class	ApplyCloudFormationInitOptions.Builder A builder for ApplyCloudFormationInitOptions
static class	ApplyCloudFormationInitOptions.Jsii$Proxy An implementation for ApplyCloudFormationInitOptions

Method Summary

Modifier and Type	Method and Description
static ApplyCloudFormationInitOptions.Builder	builder()
default java.util.List<java.lang.String>	getConfigSets() ConfigSet to activate.
default java.lang.Boolean	getEmbedFingerprint() Force instance replacement by embedding a config fingerprint.
default java.lang.Boolean	getIgnoreFailures() Don't fail the instance creation when cfn-init fails.
default java.lang.Boolean	getIncludeRole() Include --role argument when running cfn-init and cfn-signal commands.
default java.lang.Boolean	getIncludeUrl() Include --url argument when running cfn-init and cfn-signal commands.
default java.lang.Boolean	getPrintLog() Print the results of running cfn-init to the Instance System Log.
default Duration	getTimeout() Timeout waiting for the configuration to be applied.

Method Detail

getConfigSets

default java.util.List<java.lang.String> getConfigSets()

ConfigSet to activate.

Default: ['default']

getEmbedFingerprint

default java.lang.Boolean getEmbedFingerprint()

Force instance replacement by embedding a config fingerprint.

If true (the default), a hash of the config will be embedded into the UserData, so that if the config changes, the UserData changes.

• If the EC2 instance is instance-store backed or userDataCausesReplacement is set, this will cause the instance to be replaced and the new configuration to be applied.
• If the instance is EBS-backed and userDataCausesReplacement is not set, the change of UserData will make the instance restart but not be replaced, and the configuration will not be applied automatically.

If false, no hash will be embedded, and if the CloudFormation Init config changes nothing will happen to the running instance. If a config update introduces errors, you will not notice until after the CloudFormation deployment successfully finishes and the next instance fails to launch.

Default: true

getIgnoreFailures

default java.lang.Boolean getIgnoreFailures()

Don't fail the instance creation when cfn-init fails.

You can use this to prevent CloudFormation from rolling back when instances fail to start up, to help in debugging.

Default: false

getIncludeRole

default java.lang.Boolean getIncludeRole()

Include --role argument when running cfn-init and cfn-signal commands.

This will be the IAM instance profile attached to the EC2 instance

Default: false

getIncludeUrl

default java.lang.Boolean getIncludeUrl()

Include --url argument when running cfn-init and cfn-signal commands.

This will be the cloudformation endpoint in the deployed region e.g. https://cloudformation.us-east-1.amazonaws.com

Default: false

getPrintLog

default java.lang.Boolean getPrintLog()

Print the results of running cfn-init to the Instance System Log.

By default, the output of running cfn-init is written to a log file on the instance. Set this to true to print it to the System Log (visible from the EC2 Console), false to not print it.

(Be aware that the system log is refreshed at certain points in time of the instance life cycle, and successful execution may not always show up).

Default: true

getTimeout

default Duration getTimeout()

Timeout waiting for the configuration to be applied.

Default: Duration.minutes(5)

builder

static ApplyCloudFormationInitOptions.Builder builder()

Returns:

a ApplyCloudFormationInitOptions.Builder of ApplyCloudFormationInitOptions