By default, you can terminate your instance using the Amazon EC2 console, command line interface,or API. To prevent your instance from being accidentally terminated using Amazon EC2, you canenable termination protection for the instance. TheDisableApiTermination attribute controls whether the instance can beterminated using the console, CLI, or API. By default, termination protection isdisabled for your instance. You can set the value of this attribute when you launch theinstance, while the instance is running, or while the instance is stopped (forAmazon EBS-backed instances).
Enable And Disable Permissions On Volumes Using A Script
Amazon EBS encrypts your volume with a data key using industry-standard AES-256 data encryption. The data key is generated by AWS KMS and then encrypted by AWS KMS with your AWS KMS key prior to being stored with your volume information. All snapshots, and any subsequent volumes created from those snapshots using the same AWS KMS key share the same data key. For more information, see Data keys in the AWS Key Management Service Developer Guide.
When migrating servers using AWS Server Migration Service (SMS), do not turn on encryption by default. If encryption by default is already on and you are experiencing delta replication failures, turn off encryption by default. Instead, enable AMI encryption when you create the replication job.
When you create a new, empty EBS volume, you can encrypt it by enabling encryption for the specific volume creation operation. If you enabled EBS encryption by default, the volume is automatically encrypted using your default KMS key for EBS encryption. Alternatively, you can specify a different symmetric encryption KMS key for the specific volume creation operation. The volume is encrypted by the time it is first available, so your data is always secured. For detailed procedures, see Create an Amazon EBS volume.
You cannot directly encrypt existing unencrypted volumes or snapshots. However, you can create encrypted volumes or snapshots from unencrypted volumes or snapshots. If you enable encryption by default, Amazon EBS automatically encrypts new volumes and snapshots using your default KMS key for EBS encryption. Otherwise, you can enable encryption when you create an individual volume or snapshot, using either the default KMS key for Amazon EBS encryption or a symmetric customer managed encryption key. For more information, see Create an Amazon EBS volume and Copy an Amazon EBS snapshot.
Automatic key rotation is supported only for symmetric customer managed keys with key material that AWS KMS creates. AWS KMS automatically rotates AWS managed keys every year. You can't enable or disable key rotation for AWS managed keys.
When you have enabled encryption by default, encryption is mandatory for volumes restored from unencrypted snapshots, and no encryption parameters are required for your default KMS key to be used. The following diagram shows this simple default case:
Site Recovery currently supports ADE, with and without Azure Active Directory (Azure AD) for VMs running Windows operating systems. For Linux operating systems, we only support ADE without Azure AD. Moreover, for machines running ADE 1.1 (without Azure AD), the VMs must be using managed disks. VMs with unmanaged disks aren't supported. If you switch from ADE 0.1 (with Azure AD) to 1.1, you need to disable replication and enable replication for a VM after enabling 1.1.
To manage permissions, go to the key vault resource in the portal. Add the required permissions for the user. The following example shows how to enable permissions to the key vault ContosoWeb2Keyvault, which is in the source region.
If the user who's enabling disaster recovery (DR) doesn't have permissions to copy the keys, a security administrator who has appropriate permissions can use the following script to copy the encryption secrets and keys to the target region.
If you are using only one KMS host, you might not need to configure permissions in DNS. The default behavior is to allow a computer to create an SRV resource record and then update it. However, if you have more than one KMS host (the usual case), the other hosts will be unable to update the SRV resource record unless SRV default permissions are changed.
KMS hosts automatically publish their existence by creating SRV RRs in DNS. To disable automatic DNS publishing by a KMS host, use the Slmgr.vbs script with the /cdns command-line option.
Using the Slmgr.vbs script to disable automatic DNS publishing is preferred, but you can also perform this task by creating a new DWORD value called DisableDnsPublishing in the registry, and set its value to 1. This value is at HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\SoftwareProtectionPlatform in the registry. To re-enable the default behavior for publishing of KMS SRV records to DNS, set the value to 0.
Windows 7 and Windows Server 2008 R2 display the warning shown in [Figure 1] any time administrators install a KMS host key by using the UI (Users will not see this warning if they install a KMS host key by using the Slmgr.vbs script). This message prevents accidentally installing a KMS key on computers that administrators do not intend to be KMS hosts.
Administrators can manually assign a KMS host to KMS clients by using KMS host caching. Manually assigning a KMS host disables auto-discovery of KMS on the KMS client. A KMS host is manually assigned to a KMS client by running:/skms [Activation ID] where is either the KMS_FQDN, IPv4Address, or NetbiosName of the KMS host and port is TCP port on the KMS host.
If the KMS host uses Internet Protocol version 6 (IPv6) only, the address must be specified in the format [hostname]:port (using the square brackets). IPv6 addresses contain colons (:), which will be parsed incorrectly by the Slmgr.vbs script.
Before you can start to use FILESTREAM, you must enable FILESTREAM on the instance of the SQL Server Database Engine. This topic describes how to enable FILESTREAM by using SQL Server Configuration Manager.
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SELinux is a labeling system that protects the filesystem from container processes. If the content on the host system leaks into a container or a container process escapes, then SELinux blocks access. SELinux can easily cause permission-denied errors, especially when you're using volumes. Many articles have been written on SELinux, container volumes, and the use of the :z and :Z flags.
User Isolation: Can be shared by multiple users. Only SQL workloads are supported. Library installation, init scripts, and DBFS mounts are disabled to enforce strict isolation among the cluster users.
The EBS volumes attached to an instance are detached only when the instance is returned to AWS. That is, EBS volumes are never detached from an instance as long as it is part of a running cluster. To scale down EBS usage, Databricks recommends using this feature in a cluster configured with AWS Graviton instance types or Automatic termination.
If you created your Databricks account prior to version 2.44 (that is, before Apr 27, 2017) and want to use autoscaling local storage (enabled by default in High Concurrency clusters), you must add volume permissions to the IAM role or keys used to create your account. In particular, you must add the permissions ec2:AttachVolume, ec2:CreateVolume, ec2:DeleteVolume, and ec2:DescribeVolumes. For the complete list of permissions and instructions on how to update your existing IAM role or keys, see Create a cross-account IAM role.
Absolute Mode - Use numbers to represent file permissions (the method most commonly used to set permissions). When you change permissions by using the absolute mode, represent permissions for each triplet by an octal mode number.
This option controls whether the volume is guaranteed some amount of space in the aggregate. The default setting for the volumes on All Flash FAS systems is none , otherwise the default setting is volume . The file setting is no longer supported. Volume guaranteed means that the entire size of the volume is preallocated. The none value means that no space is preallocated, even if the volume contains space-reserved files or LUNs; if the aggregate is full, space is not available even for space-reserved files and LUNs within the volume. Setting this parameter to none enables you to provision more storage than is physically present in the aggregate (thin provisioning). When you use thin provisioning for a volume, it can run out of space even if it has not yet consumed its nominal size and you should carefully monitor space utilization to avoid unexpected errors due to the volume running out of space. For flexible root volumes, to ensure that system files, log files, and cores can be saved, the space-guarantee must be volume. This is to ensure support of the appliance by customer support, if a problem occurs. Disk space is preallocated when the volume is brought online and, if not used, returned to the aggregate when the volume is brought offline. It is possible to bring a volume online even when the aggregate has insufficient free space to preallocate to the volume. In this case, no space is preallocated, just as if the none option had been selected. In this situation, the vol options and vol status command display the actual value of the space-guarantee option, but indicate that it is disabled.
This field is automatically set to true on a volume when committed writes to the volume are possibly lost due to a failure, and the volume has the nvfail option enabled. With this field set, the client access to the volume is fenced to protect against possible corruptions that result from accessing stale data. The administrator needs to take appropriate recovery actions to recover the volume from the possible data loss. After the recovery is completed, the administrator can clear this field and restore the client access to the volume. This field can be cleared using the CLI but it cannot be set. 2ff7e9595c
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