Kyvos Manager
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Kyvos Manager, which is a cluster management tool for Kyvos, currently supports configuring multiple instances of services like BI Server, Query Engine, Kyvos Web Portal, and Postgres, that work in high availability mode. Kyvos services can operate normally even in the absence of the Kyvos Manager. However, certain features such as Services HA, configuring properties, Postgres High Availability for bundled Postgres, Hadoop connection Configuration & Lib Sync from Compute cluster or DFS, regardless of SSH or non-SSH mode, are dependent on Kyvos Manager. If any of these features are required at any time, an instance of Kyvos Manager must be running for Kyvos to work properly. Therefore, from Kyvos 2024.1 onwards, Kyvos Manager supports high availability in case of instance failure, and immediately, another instance will be active to serve the requirement.
Prerequisites for using Kyvos Manager High Availability (HA)
Adding Kyvos Manager (KM) instances is supported only on nodes with Kyvos Web Portal, as a cost optimization strategy. Thus, Kyvos Manager HA requires Web Portal HA as a precondition.
For Kyvos Manager HA, the Zookeeper must be up and running.
Each node in a cloud cluster must have the respective CLI command (aws, azcopy, gsutil), while on-premises, it must have the HDFS command and access to HDFS.
For cloud environments, Load balancer must be configured in the cluster
Irrespective of the type of repository used for Kyvos Manager, the repository must always be accessible from all Kyvos Manager nodes.
All newly added instances of Kyvos Manager must have the same permissions (IAM Role, Managed Identity) and network access permissions (Security Group, Local Firewall) as the Kyvos Manager node.
To enable the Kyvos Manager High Availability mode, you need to navigate to the Kyvos Manager Settings > Kyvos Manager Properties.On the Kyvos Manager Properties page, search for ENABLE_KM_HA property, and then set the value of the ENABLE_KM_HA property to 'Yes'. By default, this property is set to 'No', which means that the Kyvos Manager HA mode is disabled and will not be displayed on the Kyvos Manager Dashboard. Therefore, if you want to make the Kyvos Manager HA available, you need to update the value of this property to 'Yes'.
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In the Kyvos Manager Nodes section, click the circle (Red/Green), the Action menu (…) appears.
Click Properties. The Properties dialog is displayed.
On the Properties dialog, you can specify an Alias name to a node which can be easily modified later.
The Alias name will be displayed in the Alias column.
Start, Restart, or Stop Kyvos Manager Service for passive instance
You can start, restart, or stop single Kyvos Manager Service for the service which is in a Passive mode, as shown in below image.
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Similarly, you can Restart Kyvos Manager Service or Stop Kyvos Manager Service.
Start, Restart, or Stop all passive Kyvos Manager Services
You can start, restart, or stop all Kyvos Manager Services for the services which are in a Passive mode, as shown in the image below.
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Note The Kyvos Manager service in Active mode is always disabled since only passive services can be started, stopped or restarted. |
Restart Active Kyvos Manager Instance
You can also restart active Kyvos Manager instance. To do this, click the Action Menu appears at the right of the page.
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