aws_sdk_elasticache::operation::modify_cache_cluster

Struct ModifyCacheClusterInput

Source 
#[non_exhaustive]
pub struct ModifyCacheClusterInput {
Show 23 fields
    pub cache_cluster_id: Option<String>,
    pub num_cache_nodes: Option<i32>,
    pub cache_node_ids_to_remove: Option<Vec<String>>,
    pub az_mode: Option<AzMode>,
    pub new_availability_zones: Option<Vec<String>>,
    pub cache_security_group_names: Option<Vec<String>>,
    pub security_group_ids: Option<Vec<String>>,
    pub preferred_maintenance_window: Option<String>,
    pub notification_topic_arn: Option<String>,
    pub cache_parameter_group_name: Option<String>,
    pub notification_topic_status: Option<String>,
    pub apply_immediately: Option<bool>,
    pub engine: Option<String>,
    pub engine_version: Option<String>,
    pub auto_minor_version_upgrade: Option<bool>,
    pub snapshot_retention_limit: Option<i32>,
    pub snapshot_window: Option<String>,
    pub cache_node_type: Option<String>,
    pub auth_token: Option<String>,
    pub auth_token_update_strategy: Option<AuthTokenUpdateStrategyType>,
    pub log_delivery_configurations: Option<Vec<LogDeliveryConfigurationRequest>>,
    pub ip_discovery: Option<IpDiscovery>,
    pub scale_config: Option<ScaleConfig>,

}
Expand description

Represents the input of a ModifyCacheCluster operation.

Fields (Non-exhaustive)§

This struct is marked as non-exhaustive
Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.
§cache_cluster_id: Option<String>

The cluster identifier. This value is stored as a lowercase string.

§num_cache_nodes: Option<i32>

The number of cache nodes that the cluster should have. If the value for NumCacheNodes is greater than the sum of the number of current cache nodes and the number of cache nodes pending creation (which may be zero), more nodes are added. If the value is less than the number of existing cache nodes, nodes are removed. If the value is equal to the number of current cache nodes, any pending add or remove requests are canceled.

If you are removing cache nodes, you must use the CacheNodeIdsToRemove parameter to provide the IDs of the specific cache nodes to remove.

For clusters running Valkey or Redis OSS, this value must be 1. For clusters running Memcached, this value must be between 1 and 40.

Adding or removing Memcached cache nodes can be applied immediately or as a pending operation (see ApplyImmediately).

A pending operation to modify the number of cache nodes in a cluster during its maintenance window, whether by adding or removing nodes in accordance with the scale out architecture, is not queued. The customer's latest request to add or remove nodes to the cluster overrides any previous pending operations to modify the number of cache nodes in the cluster. For example, a request to remove 2 nodes would override a previous pending operation to remove 3 nodes. Similarly, a request to add 2 nodes would override a previous pending operation to remove 3 nodes and vice versa. As Memcached cache nodes may now be provisioned in different Availability Zones with flexible cache node placement, a request to add nodes does not automatically override a previous pending operation to add nodes. The customer can modify the previous pending operation to add more nodes or explicitly cancel the pending request and retry the new request. To cancel pending operations to modify the number of cache nodes in a cluster, use the ModifyCacheCluster request and set NumCacheNodes equal to the number of cache nodes currently in the cluster.

§cache_node_ids_to_remove: Option<Vec<String>>

A list of cache node IDs to be removed. A node ID is a numeric identifier (0001, 0002, etc.). This parameter is only valid when NumCacheNodes is less than the existing number of cache nodes. The number of cache node IDs supplied in this parameter must match the difference between the existing number of cache nodes in the cluster or pending cache nodes, whichever is greater, and the value of NumCacheNodes in the request.

For example: If you have 3 active cache nodes, 7 pending cache nodes, and the number of cache nodes in this ModifyCacheCluster call is 5, you must list 2 (7 - 5) cache node IDs to remove.

§az_mode: Option<AzMode>

Specifies whether the new nodes in this Memcached cluster are all created in a single Availability Zone or created across multiple Availability Zones.

Valid values: single-az | cross-az.

This option is only supported for Memcached clusters.

You cannot specify single-az if the Memcached cluster already has cache nodes in different Availability Zones. If cross-az is specified, existing Memcached nodes remain in their current Availability Zone.

Only newly created nodes are located in different Availability Zones.

§new_availability_zones: Option<Vec<String>>

This option is only supported on Memcached clusters.

The list of Availability Zones where the new Memcached cache nodes are created.

This parameter is only valid when NumCacheNodes in the request is greater than the sum of the number of active cache nodes and the number of cache nodes pending creation (which may be zero). The number of Availability Zones supplied in this list must match the cache nodes being added in this request.

Scenarios:

  • Scenario 1: You have 3 active nodes and wish to add 2 nodes. Specify NumCacheNodes=5 (3 + 2) and optionally specify two Availability Zones for the two new nodes.

  • Scenario 2: You have 3 active nodes and 2 nodes pending creation (from the scenario 1 call) and want to add 1 more node. Specify NumCacheNodes=6 ((3 + 2) + 1) and optionally specify an Availability Zone for the new node.

  • Scenario 3: You want to cancel all pending operations. Specify NumCacheNodes=3 to cancel all pending operations.

The Availability Zone placement of nodes pending creation cannot be modified. If you wish to cancel any nodes pending creation, add 0 nodes by setting NumCacheNodes to the number of current nodes.

If cross-az is specified, existing Memcached nodes remain in their current Availability Zone. Only newly created nodes can be located in different Availability Zones. For guidance on how to move existing Memcached nodes to different Availability Zones, see the Availability Zone Considerations section of Cache Node Considerations for Memcached.

Impact of new add/remove requests upon pending requests

  • Scenario-1

    • Pending Action: Delete

    • New Request: Delete

    • Result: The new delete, pending or immediate, replaces the pending delete.

  • Scenario-2

    • Pending Action: Delete

    • New Request: Create

    • Result: The new create, pending or immediate, replaces the pending delete.

  • Scenario-3

    • Pending Action: Create

    • New Request: Delete

    • Result: The new delete, pending or immediate, replaces the pending create.

  • Scenario-4

    • Pending Action: Create

    • New Request: Create

    • Result: The new create is added to the pending create.

      Important: If the new create request is Apply Immediately - Yes, all creates are performed immediately. If the new create request is Apply Immediately - No, all creates are pending.

§cache_security_group_names: Option<Vec<String>>

A list of cache security group names to authorize on this cluster. This change is asynchronously applied as soon as possible.

You can use this parameter only with clusters that are created outside of an Amazon Virtual Private Cloud (Amazon VPC).

Constraints: Must contain no more than 255 alphanumeric characters. Must not be "Default".

§security_group_ids: Option<Vec<String>>

Specifies the VPC Security Groups associated with the cluster.

This parameter can be used only with clusters that are created in an Amazon Virtual Private Cloud (Amazon VPC).

§preferred_maintenance_window: Option<String>

Specifies the weekly time range during which maintenance on the cluster is performed. It is specified as a range in the format ddd:hh24:mi-ddd:hh24:mi (24H Clock UTC). The minimum maintenance window is a 60 minute period.

Valid values for ddd are:

  • sun

  • mon

  • tue

  • wed

  • thu

  • fri

  • sat

Example: sun:23:00-mon:01:30

§notification_topic_arn: Option<String>

The Amazon Resource Name (ARN) of the Amazon SNS topic to which notifications are sent.

The Amazon SNS topic owner must be same as the cluster owner.

§cache_parameter_group_name: Option<String>

The name of the cache parameter group to apply to this cluster. This change is asynchronously applied as soon as possible for parameters when the ApplyImmediately parameter is specified as true for this request.

§notification_topic_status: Option<String>

The status of the Amazon SNS notification topic. Notifications are sent only if the status is active.

Valid values: active | inactive

§apply_immediately: Option<bool>

If true, this parameter causes the modifications in this request and any pending modifications to be applied, asynchronously and as soon as possible, regardless of the PreferredMaintenanceWindow setting for the cluster.

If false, changes to the cluster are applied on the next maintenance reboot, or the next failure reboot, whichever occurs first.

If you perform a ModifyCacheCluster before a pending modification is applied, the pending modification is replaced by the newer modification.

Valid values: true | false

Default: false

§engine: Option<String>

The engine type used by the cache cluster. The options are valkey, memcached or redis.

§engine_version: Option<String>

The upgraded version of the cache engine to be run on the cache nodes.

Important: You can upgrade to a newer engine version (see Selecting a Cache Engine and Version), but you cannot downgrade to an earlier engine version. If you want to use an earlier engine version, you must delete the existing cluster and create it anew with the earlier engine version.

§auto_minor_version_upgrade: Option<bool>

 If you are running Valkey 7.2 or Redis OSS engine version 6.0 or later, set this parameter to yes to opt-in to the next auto minor version upgrade campaign. This parameter is disabled for previous versions. 

§snapshot_retention_limit: Option<i32>

The number of days for which ElastiCache retains automatic cluster snapshots before deleting them. For example, if you set SnapshotRetentionLimit to 5, a snapshot that was taken today is retained for 5 days before being deleted.

If the value of SnapshotRetentionLimit is set to zero (0), backups are turned off.

§snapshot_window: Option<String>

The daily time range (in UTC) during which ElastiCache begins taking a daily snapshot of your cluster.

§cache_node_type: Option<String>

A valid cache node type that you want to scale this cluster up to.

§auth_token: Option<String>

Reserved parameter. The password used to access a password protected server. This parameter must be specified with the auth-token-update parameter. Password constraints:

  • Must be only printable ASCII characters

  • Must be at least 16 characters and no more than 128 characters in length

  • Cannot contain any of the following characters: '/', '"', or '@', '%'

For more information, see AUTH password at AUTH.

§auth_token_update_strategy: Option<AuthTokenUpdateStrategyType>

Specifies the strategy to use to update the AUTH token. This parameter must be specified with the auth-token parameter. Possible values:

  • ROTATE - default, if no update strategy is provided

  • SET - allowed only after ROTATE

  • DELETE - allowed only when transitioning to RBAC

For more information, see Authenticating Users with AUTH

§log_delivery_configurations: Option<Vec<LogDeliveryConfigurationRequest>>

Specifies the destination, format and type of the logs.

§ip_discovery: Option<IpDiscovery>

The network type you choose when modifying a cluster, either ipv4 | ipv6. IPv6 is supported for workloads using Valkey 7.2 and above, Redis OSS engine version 6.2 to 7.1 or Memcached engine version 1.6.6 and above on all instances built on the Nitro system.

§scale_config: Option<ScaleConfig>

Configures horizontal or vertical scaling for Memcached clusters, specifying the scaling percentage and interval.

Implementations§

Source§

impl ModifyCacheClusterInput

Source

pub fn cache_cluster_id(&self) -> Option<&str>

The cluster identifier. This value is stored as a lowercase string.

Source

pub fn num_cache_nodes(&self) -> Option<i32>

The number of cache nodes that the cluster should have. If the value for NumCacheNodes is greater than the sum of the number of current cache nodes and the number of cache nodes pending creation (which may be zero), more nodes are added. If the value is less than the number of existing cache nodes, nodes are removed. If the value is equal to the number of current cache nodes, any pending add or remove requests are canceled.

If you are removing cache nodes, you must use the CacheNodeIdsToRemove parameter to provide the IDs of the specific cache nodes to remove.

For clusters running Valkey or Redis OSS, this value must be 1. For clusters running Memcached, this value must be between 1 and 40.

Adding or removing Memcached cache nodes can be applied immediately or as a pending operation (see ApplyImmediately).

A pending operation to modify the number of cache nodes in a cluster during its maintenance window, whether by adding or removing nodes in accordance with the scale out architecture, is not queued. The customer's latest request to add or remove nodes to the cluster overrides any previous pending operations to modify the number of cache nodes in the cluster. For example, a request to remove 2 nodes would override a previous pending operation to remove 3 nodes. Similarly, a request to add 2 nodes would override a previous pending operation to remove 3 nodes and vice versa. As Memcached cache nodes may now be provisioned in different Availability Zones with flexible cache node placement, a request to add nodes does not automatically override a previous pending operation to add nodes. The customer can modify the previous pending operation to add more nodes or explicitly cancel the pending request and retry the new request. To cancel pending operations to modify the number of cache nodes in a cluster, use the ModifyCacheCluster request and set NumCacheNodes equal to the number of cache nodes currently in the cluster.

Source

pub fn cache_node_ids_to_remove(&self) -> &[String]

A list of cache node IDs to be removed. A node ID is a numeric identifier (0001, 0002, etc.). This parameter is only valid when NumCacheNodes is less than the existing number of cache nodes. The number of cache node IDs supplied in this parameter must match the difference between the existing number of cache nodes in the cluster or pending cache nodes, whichever is greater, and the value of NumCacheNodes in the request.

For example: If you have 3 active cache nodes, 7 pending cache nodes, and the number of cache nodes in this ModifyCacheCluster call is 5, you must list 2 (7 - 5) cache node IDs to remove.

If no value was sent for this field, a default will be set. If you want to determine if no value was sent, use .cache_node_ids_to_remove.is_none().

Source

pub fn az_mode(&self) -> Option<&AzMode>

Specifies whether the new nodes in this Memcached cluster are all created in a single Availability Zone or created across multiple Availability Zones.

Valid values: single-az | cross-az.

This option is only supported for Memcached clusters.

You cannot specify single-az if the Memcached cluster already has cache nodes in different Availability Zones. If cross-az is specified, existing Memcached nodes remain in their current Availability Zone.

Only newly created nodes are located in different Availability Zones.

Source

pub fn new_availability_zones(&self) -> &[String]

This option is only supported on Memcached clusters.

The list of Availability Zones where the new Memcached cache nodes are created.

This parameter is only valid when NumCacheNodes in the request is greater than the sum of the number of active cache nodes and the number of cache nodes pending creation (which may be zero). The number of Availability Zones supplied in this list must match the cache nodes being added in this request.

Scenarios:

  • Scenario 1: You have 3 active nodes and wish to add 2 nodes. Specify NumCacheNodes=5 (3 + 2) and optionally specify two Availability Zones for the two new nodes.

  • Scenario 2: You have 3 active nodes and 2 nodes pending creation (from the scenario 1 call) and want to add 1 more node. Specify NumCacheNodes=6 ((3 + 2) + 1) and optionally specify an Availability Zone for the new node.

  • Scenario 3: You want to cancel all pending operations. Specify NumCacheNodes=3 to cancel all pending operations.

The Availability Zone placement of nodes pending creation cannot be modified. If you wish to cancel any nodes pending creation, add 0 nodes by setting NumCacheNodes to the number of current nodes.

If cross-az is specified, existing Memcached nodes remain in their current Availability Zone. Only newly created nodes can be located in different Availability Zones. For guidance on how to move existing Memcached nodes to different Availability Zones, see the Availability Zone Considerations section of Cache Node Considerations for Memcached.

Impact of new add/remove requests upon pending requests

  • Scenario-1

    • Pending Action: Delete

    • New Request: Delete

    • Result: The new delete, pending or immediate, replaces the pending delete.

  • Scenario-2

    • Pending Action: Delete

    • New Request: Create

    • Result: The new create, pending or immediate, replaces the pending delete.

  • Scenario-3

    • Pending Action: Create

    • New Request: Delete

    • Result: The new delete, pending or immediate, replaces the pending create.

  • Scenario-4

    • Pending Action: Create

    • New Request: Create

    • Result: The new create is added to the pending create.

      Important: If the new create request is Apply Immediately - Yes, all creates are performed immediately. If the new create request is Apply Immediately - No, all creates are pending.

If no value was sent for this field, a default will be set. If you want to determine if no value was sent, use .new_availability_zones.is_none().

Source

pub fn cache_security_group_names(&self) -> &[String]

A list of cache security group names to authorize on this cluster. This change is asynchronously applied as soon as possible.

You can use this parameter only with clusters that are created outside of an Amazon Virtual Private Cloud (Amazon VPC).

Constraints: Must contain no more than 255 alphanumeric characters. Must not be "Default".

If no value was sent for this field, a default will be set. If you want to determine if no value was sent, use .cache_security_group_names.is_none().

Source

pub fn security_group_ids(&self) -> &[String]

Specifies the VPC Security Groups associated with the cluster.

This parameter can be used only with clusters that are created in an Amazon Virtual Private Cloud (Amazon VPC).

If no value was sent for this field, a default will be set. If you want to determine if no value was sent, use .security_group_ids.is_none().

Source

pub fn preferred_maintenance_window(&self) -> Option<&str>

Specifies the weekly time range during which maintenance on the cluster is performed. It is specified as a range in the format ddd:hh24:mi-ddd:hh24:mi (24H Clock UTC). The minimum maintenance window is a 60 minute period.

Valid values for ddd are:

  • sun

  • mon

  • tue

  • wed

  • thu

  • fri

  • sat

Example: sun:23:00-mon:01:30

Source

pub fn notification_topic_arn(&self) -> Option<&str>

The Amazon Resource Name (ARN) of the Amazon SNS topic to which notifications are sent.

The Amazon SNS topic owner must be same as the cluster owner.

Source

pub fn cache_parameter_group_name(&self) -> Option<&str>

The name of the cache parameter group to apply to this cluster. This change is asynchronously applied as soon as possible for parameters when the ApplyImmediately parameter is specified as true for this request.

Source

pub fn notification_topic_status(&self) -> Option<&str>

The status of the Amazon SNS notification topic. Notifications are sent only if the status is active.

Valid values: active | inactive

Source

pub fn apply_immediately(&self) -> Option<bool>

If true, this parameter causes the modifications in this request and any pending modifications to be applied, asynchronously and as soon as possible, regardless of the PreferredMaintenanceWindow setting for the cluster.

If false, changes to the cluster are applied on the next maintenance reboot, or the next failure reboot, whichever occurs first.

If you perform a ModifyCacheCluster before a pending modification is applied, the pending modification is replaced by the newer modification.

Valid values: true | false

Default: false

Source

pub fn engine(&self) -> Option<&str>

The engine type used by the cache cluster. The options are valkey, memcached or redis.

Source

pub fn engine_version(&self) -> Option<&str>

The upgraded version of the cache engine to be run on the cache nodes.

Important: You can upgrade to a newer engine version (see Selecting a Cache Engine and Version), but you cannot downgrade to an earlier engine version. If you want to use an earlier engine version, you must delete the existing cluster and create it anew with the earlier engine version.

Source

pub fn auto_minor_version_upgrade(&self) -> Option<bool>

 If you are running Valkey 7.2 or Redis OSS engine version 6.0 or later, set this parameter to yes to opt-in to the next auto minor version upgrade campaign. This parameter is disabled for previous versions. 

Source

pub fn snapshot_retention_limit(&self) -> Option<i32>

The number of days for which ElastiCache retains automatic cluster snapshots before deleting them. For example, if you set SnapshotRetentionLimit to 5, a snapshot that was taken today is retained for 5 days before being deleted.

If the value of SnapshotRetentionLimit is set to zero (0), backups are turned off.

Source

pub fn snapshot_window(&self) -> Option<&str>

The daily time range (in UTC) during which ElastiCache begins taking a daily snapshot of your cluster.

Source

pub fn cache_node_type(&self) -> Option<&str>

A valid cache node type that you want to scale this cluster up to.

Source

pub fn auth_token(&self) -> Option<&str>

Reserved parameter. The password used to access a password protected server. This parameter must be specified with the auth-token-update parameter. Password constraints:

  • Must be only printable ASCII characters

  • Must be at least 16 characters and no more than 128 characters in length

  • Cannot contain any of the following characters: '/', '"', or '@', '%'

For more information, see AUTH password at AUTH.

Source

pub fn auth_token_update_strategy(&self) -> Option<&AuthTokenUpdateStrategyType>

Specifies the strategy to use to update the AUTH token. This parameter must be specified with the auth-token parameter. Possible values:

  • ROTATE - default, if no update strategy is provided

  • SET - allowed only after ROTATE

  • DELETE - allowed only when transitioning to RBAC

For more information, see Authenticating Users with AUTH

Source

pub fn log_delivery_configurations(&self) -> &[LogDeliveryConfigurationRequest]

Specifies the destination, format and type of the logs.

If no value was sent for this field, a default will be set. If you want to determine if no value was sent, use .log_delivery_configurations.is_none().

Source

pub fn ip_discovery(&self) -> Option<&IpDiscovery>

The network type you choose when modifying a cluster, either ipv4 | ipv6. IPv6 is supported for workloads using Valkey 7.2 and above, Redis OSS engine version 6.2 to 7.1 or Memcached engine version 1.6.6 and above on all instances built on the Nitro system.

Source

pub fn scale_config(&self) -> Option<&ScaleConfig>

Configures horizontal or vertical scaling for Memcached clusters, specifying the scaling percentage and interval.

Source§

impl ModifyCacheClusterInput

Source

pub fn builder() -> ModifyCacheClusterInputBuilder

Creates a new builder-style object to manufacture ModifyCacheClusterInput.

Trait Implementations§

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impl Clone for ModifyCacheClusterInput

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fn clone(&self) -> ModifyCacheClusterInput

Returns a duplicate of the value. Read more
1.0.0 · Source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for ModifyCacheClusterInput

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl PartialEq for ModifyCacheClusterInput

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fn eq(&self, other: &ModifyCacheClusterInput) -> bool

Tests for self and other values to be equal, and is used by ==.
1.0.0 · Source§

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl StructuralPartialEq for ModifyCacheClusterInput

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Returns self with the bg() set to [Color :: Green].

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Returns self with the bg() set to [Color :: Blue].

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Returns self with the bg() set to [Color :: Magenta].

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Returns self with the bg() set to [Color :: White].

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Returns self with the bg() set to [Color :: BrightMagenta].

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Returns self with the bg() set to [Color :: BrightCyan].

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Enables the styling Attribute value.

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Returns self with the attr() set to [Attribute :: Dim].

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Enables the yansi Quirk value.

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👎Deprecated since 1.0.1: renamed to resetting() due to conflicts with Vec::clear(). The clear() method will be removed in a future release.

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fn whenever(&self, value: Condition) -> Painted<&T>

Conditionally enable styling based on whether the Condition value applies. Replaces any previous condition.

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