![]() In this case, we recommend that you omit the parameter. However, if you specify false, the parameter is ignored and the block device mapping is always encrypted. If you are creating a block device mapping from an existing encrypted volume, you can include this parameter, and specify either true or false.If you specify true, the request will fail. If you are creating a block device mapping from an existing unencrypted volume, you can include this parameter, but you must specify false.If you include this parameter, the request will fail, regardless of the value that you specify. If you are creating a block device mapping from an existing encrypted or unencrypted snapshot, you must omit this parameter.If you omit this parameter, it defaults to false (unencrypted). If you are creating a block device mapping for a new (empty) volume, you can include this parameter, and specify either true for an encrypted volume, or false for an unencrypted volume.įor CreateImage and RegisterImage, whether you can include this parameter, and the allowed values differ depending on the type of block device mapping you are creating. This parameter is not returned by DescribeImageAttribute. For more information, see Supported instance types. In no case can you remove encryption from an encrypted volume.Įncrypted volumes can only be attached to instances that support Amazon EBS encryption. ![]() For more information, see Amazon EBS encryption in the Amazon EC2 User Guide. The effect of setting the encryption state to true depends on the volume origin (new or from a snapshot), starting encryption state, ownership, and whether encryption by default is enabled. Indicates whether the encryption state of an EBS volume is changed while being restored from a backing snapshot. įor troubleshooting, see What to do if an instance immediately terminates, and Troubleshooting connecting to your instance. Amazon EC2 public images use this feature to provide secure access without passwords. You can use this key to provide secure access to the instance. Linux instances have access to the public key of the key pair at boot. For more information, see CreateTags and Tagging your Amazon EC2 resources. You can tag instances and EBS volumes during launch, after launch, or both. You can check the state of your instance using DescribeInstances. For example, create five separate launch requests for 100 instances each instead of one launch request for 500 instances.Īn instance is ready for you to use when it's in the running state. To ensure faster instance launches, break up large requests into smaller batches. When you launch an instance using RunInstances, you can specify the launch template instead of specifying the launch parameters. You can create a launch template, which is a resource that contains the parameters to launch an instance. If any of the AMIs have a product code attached for which the user has not subscribed, the request fails.For more information, see Security groups. If you don't specify a security group ID, we use the default security group.For more information, see Instance types. Not all instance types support IPv6 addresses. ![]() If you don't specify this address, we choose one from the IPv4 range of your subnet.
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