Table of Contents Previous Next



A template contains a predefined set of server options that determine the configuration of a database cluster. A template can simplify creation of clusters that use a common configuration, or limit user access to costly resources such as large server classes. Use functionality offered in the Template Administration section (see Figure 4.30) of the Admin tab to create and manage templates.
C:\Users\susan\AppData\Local\Temp\vmware-susan\VMwareDnD\011e1dd2\Screen Shot 2018-12-03 at 8.54.23 AM.png
Use the TEMPLATES ONLY column of the User Administration table to specify that a user must use a template. A Template Only user will have access to only those templates that specify a role or tenant in which they have membership in the Select Roles section of the Add Template dialog.
To create a template, click the Add Template button; the Add Template dialog opens (see Figure 4.31).
C:\Users\susan\Desktop\edit.png
Use fields on the Add Template dialog to define a new template:
Use the Description field to provide a description of the template.
Use the drop-down listbox in the Engine Version field to select the version of the Postgres engine that you wish to use on clusters configured by the template.
Use the drop-down listbox in the Server Class field to specify the size of each cluster node. The server class determines the size and type (compute power and RAM) of any cluster configured by the template.
If your cluster resides on an Amazon AMI, use the drop-down listbox in the VPC field to specify the identity of the network in which clusters configured by the template should reside.
Use the drop-down listbox in the Number of nodes field to specify the number of nodes that should be created in each cluster.
Use the Storage GB field to specify the initial size of the data space (in Gigabytes).
Check the box next to Encrypted to indicate that the cluster should be encrypted. EDB Ark uses the aes-xts-plain (512-bit) cipher suite to provide an encryption environment that is both secure and transparent to connecting clients. When encryption is enabled, everything residing on the cluster is encrypted except for the root filesystem.
If the cluster will reside on an AWS host, check the box next to EBS Optimized to specify that the cluster should use an Amazon EBS-optimized instance and provisioned IOPS to guarantee a level of I/O performance.
The IOPS field is enabled for those clusters that will reside on an EBS-optimized instance. If applicable, specify the level of I/O performance that will be maintained for the cluster by automatic scaling. The maximum value is 30 times the size of your cluster; for example, if you have a 4 Gigabyte cluster, you can specify a maximum value of 120.
Check the box next to Perform OS and Software update to specify that a software update should be performed whenever the cluster is provisioned. Please note: this option is disabled if the cluster uses a statically provisioned server.
Use the Number of backups field to specify the number of backups that will be retained for the cluster. When the specified number of server backups is reached, EDB Ark will delete the oldest backup to make room for a new backup.
Use the Backup Window field to specify a time that it is convenient to perform a cluster backup.
Check the box next to Continuous Archiving (Point-in-Time Recovery) to enable point-in-time recovery for the cluster. When enabled, a base backup is automatically performed that can to be used to restore to a specific point in time. All subsequent automatic scheduled backups will also support point-in-time recovery.
Check the boxes next to the options in the Select Scaling Options box to indicate which options will be available to template users. Check the box next to:
o
Manually Scale Replicas to specify that users of this template will be allowed to manually scale replica nodes configured by this template.
o
Manually Scale Storage to specify that users of this template will be allowed to manually scale storage on clusters configured by this template.
o
Auto Scale Replicas to specify that users of this template will be able to configure automatic node scaling for clusters configured by this template.
o
Auto Scale Storage to specify that users of this template will be able to configure automatic storage scaling for clusters configured by this template.
Check the box to the left of a role or tenant name in the Select Roles or Select Tenants box to indicate that members of the selected role or tenant can use the template.
When you've completed the Add Template dialog, click Save to create the defined template; click Cancel to close the dialog and exit without saving your work.
If you select Launch From Template on the Create a New Server Cluster dialog, you will be prompted to select the template you wish to use from the Template Name drop-down listbox. After selecting a template, you can use the Full Template Details link to open a popup that displays detailed information about the configuration of clusters deployed with the template (see Figure 4.32).
C:\Users\susan\AppData\Local\Temp\vmware-susan\VMwareDnD\546be1cf\Screen Shot 2018-12-07 at 11.45.51 AM.png


Table of Contents Previous Next