Set Up an In-Memory DB Cluster
Last updated
Last updated
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Before setting up a database, ensure that you are working within a provisioned Virtual Data Center (VDC) that contains at least one VM from which the database will be accessed. The VM you create is counted against the quota allocated in your contract.
Database Manager is available only for contract administrators, owners, and users with Access and manage DBaaS privileges. You can set the privilege via the DCD group privileges. For more information, see Manage User Access.
To create an In-Memory DB cluster, follow these steps:
Log in to the DCD with your username and password.
Go to Menu > Databases > In-Memory DB.
Click Create cluster to create a new In-Memory DB cluster.
Enter the following details in the Create In-Memory DB Cluster window:
Result: Estimated costs are calculated based on the values and displayed. It is exclusive and certain variables like traffic and backup are not considered.
Click Save to create the In-Memory DB cluster.
Result: Your In-Memory DB Cluster is now created. The STATE is set to Busy when the cluster is in creation and Available after creation.
To define cluster properties, specify the following:
Cluster name: Enter an appropriate name for your In-Memory DB cluster.
Version: The value is set to 7.2, by default.
Instances: Enter the number of In-Memory DB nodes you want in the cluster. You can create a maximum of five nodes within a cluster. The primary In-Memory DB node always manages the data of exactly one database cluster. You can also use the arrows to increase or decrease the number of nodes. Replication is possible only when you define more than one node.
Note: Here, you will have a primary node and one or more secondary nodes that run a copy of the active database, so you have n-1 secondary nodes in the cluster.
Replication Type: The replication type is Asynchronous by default for In-Memory DB. You will see this option only upon selecting more than one node (instance). In an asynchronous mode, the primary In-Memory DB node does not wait for a replica to indicate that the data has been written. The cluster can lose some committed transactions to ensure availability.
Location: Select a location of your preference from the drop-down list. The drop-down list displays the server locations where you can create clusters.
CPU Type: The CPU type is set to Dedicated Core, by default.
Persistence: Select one of the following persistence modes: In-Memory, AOF (Append Only File), RDB (Redis Database File), or RDB and AOF. For more information, see Data Persistence.
To select the number of resources that you want to associate with the In-Memory DB cluster, specify the following:
Number of CPUs (per instance): Increase or decrease the number of CPUs using the slider.
RAM Size (per instance): Increase or decrease the size of the RAM using the slider to suit your needs.
You can also click Finding Your Private IP Address section on the right side of the window to know how to retrieve a private IP address.
Datacenter: The data center is set to Germany/Berlin, by default.
Datacenter LAN: Select a LAN from the drop-down list for the data center.
Private IP address: Enter the private IP address or subnet using the available Private IPs.
Note: To know your Private IP address/Subnet, refer to the instructions listed beneath Finding Your Private IP Address on the DCD.
Your chosen start time (UTC) plus four hours is the maintenance time.
Day: Select a day from the drop-down list to set a day for maintenance.
Note: We recommend choosing the day and time appropriately because the maintenance occurs in a 4-hour-long window.
The credentials of any user who has previously been created in the backup will be overwritten.
Username: Enter a username to provide access to the In-Memory DB cluster for the respective user.
Password: Enter a password for the respective user.
Start Time (UTC): Enter a time using the pre-defined format (hh:mm:ss) to schedule the maintenance task. You can also click the icon to set a time.
