4.2 The Clusters Tab

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4 Using the Ark Console : 4.2 The Clusters Tab

Use the Clusters tab (shown in Figure 4.3) to create, monitor and manage active clusters that reside in the cluster.
C:\Users\susan\Desktop\Screen Shot 2018-12-11 at 5.43.22 PM.png
Figure 4.3 - The Clusters tab.
The VM column displays the state of the virtual machine on which the cluster resides.
The HA column displays the state of the high-availability cluster.
The DB column displays the state of the database server.
The UP column displays the current status of the packages installed on the cluster. Periodically, the cluster manager performs a check to see if the packages are up to date.
Use the icons along the left side of the Clusters tab to create new clusters or manage existing clusters:
C:\Users\susan\Desktop\Screen Shot 2018-12-11 at 5.46.31 PM.pngUse the Add Cluster icon to create a new Postgres cluster. For more information, see Section 5.1.
C:\Users\susan\Desktop\Screen Shot 2018-12-11 at 5.47.59 PM.pngSelect the Scale Up icon to manually add one or more replicas to the current cluster, or add additional storage to the current cluster servers. For information about manually adding replica servers or storage, see Section 9.
C:\Users\susan\Desktop\Screen Shot 2018-12-11 at 5.48.52 PM.pngUse the Scale Down icon to remove one or more specified replicas from the cluster. For more information about using the Scale Down icon, see Section 9.2.
C:\Users\susan\Desktop\Screen Shot 2018-12-11 at 5.49.56 PM.pngSelect the Backup icon to take a backup of the highlighted cluster (a single backup of the cluster data, and a backup of the cluster configuration files). For more information, see Section 4.3.
C:\Users\susan\Desktop\Screen Shot 2018-12-11 at 5.50.56 PM.pngSelect the Clone icon to copy the master node of the selected database into a clone of the original master node. Use this feature to create a developer sandbox that is an exact duplicate of a working server; for more information about creating a clone, see Section 5.2.
C:\Users\susan\Desktop\Screen Shot 2018-12-11 at 5.51.50 PM.pngYou can use the Upgrade icon to open a dialog that allows you to perform a yum update (keeping the same server version) or perform an upgrade to a later server version. After performing an update, the cluster nodes will be rebooted (initiating any kernel updates required). Please note that a software update can take some time to complete.
C:\Users\susan\Desktop\Screen Shot 2018-12-11 at 5.54.25 PM.pngUse the Scale Machine 유형 icon to change the size of the virtual machine for the selected cluster. EDB Ark will copy the cluster into a new cluster of a different server class (i.e. RAM and CPU), and optionally re-assign the IP address of the existing cluster to the new cluster. For more information about using the Scale Machine 유형 dialog, see Section 9.1.
C:\Users\susan\Desktop\Screen Shot 2018-12-11 at 5.55.48 PM.pngUse the 다운로드 SSH Key icon to download the SSH key associated with the selected cluster. Each cluster has a unique key that you can use to access nodes in that cluster. When you download a key, a popup will inform you of the steps required to connect to your cluster with SSH (see Figure 4.4).
C:\Users\susan\AppData\Local\Temp\vmware-susan\VMwareDnD\c84158a4\Screen Shot 2018-12-11 at 5.32.11 PM.png
C:\Users\susan\Desktop\edit.png Use the Cluster Administrative Settings icon to access a popup dialog that allows you to view or modify the ownership and notification email address of the currently selected cluster. For more information about the Administrative Settings dialog, see Section 5.3.
C:\Users\susan\Desktop\edit.png Use the Delete Cluster icon to delete the currently selected cluster. A popup dialog will ask you to confirm your decision to terminate a cluster; once terminated, a cluster may only be restored from a backup.
By default, the box next to Release elastic IP address is checked. Deselect this option if you wish to retain the IP address for re-use with other clusters. If you release the IP address, it will be made available for use by other clusters.
The panels located at the bottom of the Clusters tab provide easy access to helpful statistical usage and activity information about the currently selected cluster. Three navigation bars control the display; click a panel name on the navigation bar to access one of the following panels:
Select the Details bar to view information about the state of the selected cluster.
Select the Monitoring bar to view usage statistics for the selected cluster.
Select the Events bar to review event logs describing activities on the selected cluster.

4 Using the Ark Console : 4.2 The Clusters Tab

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