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Cluster

The Cluster menu selection comprises several tabs that contain information about all the machines in your cluster as well as configuration and log file access.

Summary data about your Kinetica cluster is pinned to the top right of each tab within Cluster; it includes:

  • The status of Kinetica
  • How many users are connected to Kinetica
  • How many requests per second are being made to Kinetica
  • How many tables are present in this Kinetica cluster
  • How many objects are present in this Kinetica cluster
  • The uptime of this Kinetica cluster
  • A refresh button to refresh the cluster information
../_images/cluster_summary_bar.png

Dashboard

The Dashboard page is also the GAdmin homepage. It highlights the most important information about all the machines in your cluster, including CPU, Memory, and Disk usage.

../_images/cluster_dashboard.png

Ranks

The Ranks page displays important information about all the GPU ranks being used in your cluster.

../_images/cluster_ranks.png

Admin

Important

The Cluster ‣ Admin section is only available to users with the System Admin permission.

The Admin page allows you to stop or start the database, rebuild the database, rebalance the database, or review operation history (add, remove, or rebalance node operations) information.

Click Rebuild DB to rebuild the database should you experience database errors or some tables and/or collections are unable to be queried. All tables can be rebuilt or just tables with disk optimized columns and/or tables with text search columns can be rebuilt. For more information on rebuilding individual tables or collections, see Rebuilding.

Click Rebalance DB to optionally shuffle around sharded and unsharded data across your cluster so all nodes could have roughly the same amount of sharded and unsharded data. If choosing to rebalance unsharded data, optionally provide a whitelist or blacklist of unsharded tables' names.

../_images/cluster_admin.png

Setup

Important

The Cluster ‣ Setup section is only available to users with the System Admin permission.

The Setup page assists in first-time setup for Kinetica, including host, rank, and license key input. The settings on this page vary depending on license type (Cloud, Enterprise, etc.) and package type (CUDA or non-CUDA).

Note

This tab can only be edited when Kinetica is not running.

../_images/cluster_setup.png

Config

Important

The Cluster ‣ Config section is only available to users with the System Admin permission.

The Config page allows you to edit the core Kinetica configuration file and save the changes directly in GAdmin; this file maps to the /opt/gpudb/core/etc/gpudb.conf file. Detailed information about configuration file settings can be found on Configuration Reference.

Note

This tab can only be edited when Kinetica is not running.

../_images/cluster_config.png

Alerts

The Alerts displays the most recent triggered alerts. Detailed information about alerts and how to set them can be found on Alerting.

../_images/cluster_alerts.png

Logging

The Logging page displays the running system log file, updating every two seconds. This file is Kinetica's main diagnostic tool and it is located at /opt/gpudb/core/logs/host-manager-<hostname>-<date-time>.log.

Note

If the cluster uses a shared persist directory, each nodes' database log will be located in this directory as well.

Select the Pause Log checkbox to pause the file updates. The number of displayed lines can be selected from Lines, and the displayed lines can be filtered using Filter (select the Exclude checkbox to instead exclude the filter).

Select Logging Level to modify the per-rank logging level for any system logger. Any change will take effect immediately and be in effect until a subsequent change is made to the same logger or the database is restarted. A database restart will reset all loggers to their default levels, system-wide.

../_images/cluster_logging.png

Debug

The Debug page displays debugging and metric information about your cluster. Note that each section has nested information, so it's possible to drill in for more details. From this page, you can also generate system reports and access previous reports. A system report includes important logs and files that can be sent to support (support@kinetica.com) to help diagnose any issues at hand.

../_images/cluster_debug.png

Demo

Important

The Cluster ‣ Demo section is only available to users with the System Admin permission.

The Demo page contains various data that you can load into Kinetica. This data will help get you started using Kinetica as well as demonstrate some key capabilities of the system. Each demo dataset contains 500,000 records; after loading the data into Kinetica, you have the option of loading the same data again to increase the amount of data you have to play with. The datasets with a Reveal Dashboard button have a corresponding Reveal dashboard that will be automatically setup in Reveal after ingesting the data.

../_images/cluster_demo.png

Visualize

The Visualize page contains an overview of Reveal as well as a quick link to Reveal.

../_images/cluster_visualize.png

KAgent

The KAgent button redirects to the KAgent UI (if installed) at:

http://<host>:8081/