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Log Files

Log Files

✅ Enterprise: AWS, Azure, GCP, and On-Premises

✅ Marketplace: AWS, Azure, and GCP

✅ SaaS: AWS, Azure, and GCP

✅ Single Node Installation (SNI)

Overview

The Log Files tab on the Monitor page is used to view Services, Archived, Kyvos Manager, Kyvos Manager Access, and Kyvos YARN Services. 

The following are the common actions: 

  • Search: Use the Search textbox to locate your target log files quickly. 

  • Download, View, or Delete: Select the checkbox corresponding to the log file that you want to download, view, or delete a particular log file. You can also delete log files that do not have the extension as .log or .out.

  • Download All: Downloads all the log files or multiple files selected to download.

  • Select All: Selects all files. You can also clear all the selected files by using the Clear All button or the Clear Selection link at the bottom of the page. 

  • Delete Selected: Click the Actions menu (...) at the top-right of the pane, and then select this option to delete multiple files. 

Services Logs

You can view and download Kyvos Cluster Services logs details. 

You can download the node actions logs. For more information about node actions and cloud actions, click here.

To view the services, perform the following steps: 

  1. On the Monitor page, click the Log Files tab. The Services tab is selected by default.
    The page lists all the Kyvos cluster log details. 

    image-20260310-112524.png

     

  2. In the Filter pane, select the following:

    1. The required Service(s), Node(s), File Type, and log Time from the list. By default, you can download all logs for all services and nodes.

    2. Services: Select the services for which you want to download the logs.

      image-20260421-123353.png

    3. Nodes: Select the node for which you want to view the logs.

      image-20260421-123618.png

    4. File type:

      • Log: Generates Kyvos services logs, such as Kyvos Manager Agent, Web Portal, and so on.

      • Thread Dump: Generates a thread dump for the Kyvos Manager agent and downloads thread dumps for the Analytical Server and Query Engine from the services logs.

      • Heap Dump: Displays the heap dump files.

      • JVM Crash File: Displays the JVM crash files.

      • Out File: Displays the out files.

      • System logs: Generates monitoring logs for tiers ranging from 0 to 4.

      • Node Action: Generates the node action logs. For more information about node actions and cloud actions, click here.

      • All: Generates all types of logs.

    5. Log start and end date with time: Select the filter (is after or is between) to view logs with the required date with time. Use the is between filter to view the logs with the start and end date with time.

      image-20260310-114042.png

       

    6. Click Fetch List. The details will be displayed in the right pane.

  3. On the page, perform the following actions: 

    1. Download logs: Select the required filter for downloading logs.
      NOTE: This is applicable to all cloud (AWS, Azure and GCP) deployments for Kyvos Native (Kubernetes) deployments.

    2. Clear Log Cache: Click the Actions menu (...) at the top-right of the page, and then select this option to free the hard disk space by clearing the logs cache on and Kyvos Manager nodes.

    3. Configure Logging: Click the Actions menu (...) at the top-right of the page, and then select this option to configure the Kyvos Manager agent logging parameters like log level, file size, and backup file count. 

      image-20240223-122034.png

       

    4. Generate Thread Dump: Select nodes to generate thread dump for KM Agent.

      image-20260310-114116.png

       

      1. Click Actions menu (…) and then select Generate Thread Dump.

      2. Select the node from the list.

      3. Click Generate & Download. The tar file is downloaded.

    5. Download, View or Delete the selected service.

      image-20260310-114303.png

       

      • Download: Use this link to download the Active or Passive Kyvos Manager logs.

      • View: Use this link to view the Active or Passive Kyvos Manager logs in detail . The Log File Details dialog is displayed. Click Close to exit the dialog box.

        image-20240223-143651.png

         

      • Delete: Use this option to delete the selected log file. Clicking the link will display the a confirmation dialog to delete the log file.

        image-20240223-145055.png

  • In case YARN is configured, you can also download logs of Query Engine and App Master from HDFS. You can also choose to view active or inactive or both nodes.

  • You can also sync logs to HDFS and search or download logs matching the specified selection criteria. 

Note

You can now view Kyvos Web Server logs on the Monitor's page of the Kyvos Web Portal.

Download Archived Kyvos Services logs

You can now download archived of all Kyvos Services logs through Kyvos Manager on the Monitor > Archived page. You can obtain logs for any specific nodes and also apply a date filter to fetch more precise log details.

Following is the Kyvos Services:

  • BI Server

  • Web Portal

  • Kyvos Manager

  • Pod Compute Server

  • Pod Monitoring

  • Query Engine

  • Web Portal

  • Compute Master (from 2025.8 onwards)

To view and download the Archived logs, perform the following steps: 

  1. To view cluster logs, click Monitor and High Availability> Monitor on the navigation pane. The Monitor page is displayed. 

  2. On the Monitor page, click the Log Files tab. 

  3. On the Logs Files page, click the Archived tab.

  4. In the filter section, select the Services (all Kyvos Services are listed), Nodes, File type and Log Time.

    You can apply a date filter (Is after and Is Between).

    image-20260310-114521.png

  5. Click Fetch Log List. The list of the archived Compute Server logs. You can select a single node or Select All nodes and click the Download link.

Kyvos Manager Server Logs

The Kyvos Manager records all the events that occur and any errors associated with those events in the form of logs. Logs are an essential tool for monitoring and troubleshooting problems with your environment. All events record information, such as log level, time at which the event occurred, the source component that logged it, the computer on which the event occurred, and so on. Information in these logs helps you identify errors. The logs also provide information on the history of the events that occur over time.
For example, the following events are recorded in the logs.

  • Installation and upgrade events for Kyvos Manager

  • Start and stop information for cluster and its services

  • Running status for Query Engine and

  • Connection and disconnection events

To view the logs, perform the following steps: 

  1. To view cluster logs, click Monitor and High Availability> Monitor on the navigation pane. The Monitor page is displayed. 

  2. On the Monitor page, click the Kyvos Manager tab. 

    image-20241219-134456.png

  3. In the Nodes section, select the required node, and then click Fetch Log List. The list of the Kyvos Manager log file is displayed for the selected node. You can select a single node or Select All nodes.

  4. On the page, select the required Kyvos Manager log file to perform the required action, such as Download, View, or Delete. You can Download All log files.

  5. You can also select a single log file or Select All option to perform the required action. You can also click the Clear Selection to clear the selected log files.

  6. If required, you can configure the Kyvos Manager agent logging parameters like log level, file size, backup file count, SSH log level, and JSCH log level. To do this, click the Actions menu (...) at the top-right of the pane and then select Configure Logging . 

    image-20240223-150242.png

Kyvos Manager Access logs

The Access Logs contain information about the terminals from where the Kyvos Manager application has been accessed, along with the time of access and type of request (GET or POST). Kyvos Manager provides this information through Apache Tomcat access logs.

You can View and Download Active or Passive Kyvos Manager Access logs.

To view the Kyvos Manager Access logs, perform the following steps: 

  1. On the Monitor page, click the Logs tab, and then click the Kyvos Manager Access tab.
    The page lists all the Kyvos Manager local host access details. 

    image-20240829-103446.png

Kyvos YARN Services 

From Kyvos 2025.7 onwards, Kyvos now supports launching dedicated compute servers within YARN containers, enhancing compatibility with YARN-based on-premises deployments. This enhancement enables users to run dedicated compute servers specifically for semantic model processing, ensuring improved resource isolation, scalability, and performance.

For clusters deployed in YARN mode, Kyvos Manager enables you to view, start, stop, and restart the YARN services for all nodes.
For this, click the cluster name > Monitor and High Availability > Monitor > Kyvos YARN Services on the navigation pane.

This page displays the status details of the App Master Query Engine, Query Engine, App Master Compute Server, and Compute Server, as shown in the following figure.

On the Kyvos YARN Services page, you can perform the following actions:

  • Download 

  • View 

  • Select All

  • Clear selection

  • Fetch Log List 

  • Clear Cache log 

  • Configure logging 

Tiered Monitoring Logs

Kyvos now supports a tiered monitoring framework for the Query Engine and Analytical Server, enabling administrators to choose monitoring levels (Tier 0–4) based on their needs. Additionally, you can download all monitoring logs consolidated into a single archive from Kyvos Manager under Log files.

  • To download the System Monitoring Logs: On the page, select the required System Logs file to perform the required action, such as Download, View, or Delete. You can Download All log files.

    image-20260310-115739.png

     

  • To download the Compute Server Monitoring logs: Select the Compute Server Logs from the Services list to perform the required action, such as Download, View, or Delete. You can Download All log files.

Downloading Heap dump, JVM Crash file, and Out file from Node

From Kyvos 2026.1 onwards, you can filter the list and download the following and Query Engine files:

  • Heap dump file

  • JVM crash file

  • Out file

image-20260121-092523.png

Path to view the files details on the and Query Engine nodes:

Archiving Heap dump, JVM Crash file, and Out file to DFS

After starting the and Query Engine services, the heap dump, JVM crash file, and out file will be purged from the local and archived to DFS under the logs folder.

  • DFS path: logs/<node_ip>/<service>/<date>/

Downloading Archived files (Heap dump, JVM Crash file, and Out file)

From Kyvos 2026.2 onwards, for all clouds (AWS, Azure, and GCP), you can download the archived files of and Query Engine for the following:

  • Heap dump file

  • JVM crash file

  • Out file

image-20260310-120017.png

Filtering for Service Logs and Archived files (Heap dump, JVM Crash file, and Out file)

From Kyvos 2026.2 onwards, support for advanced filtering for listing and downloading service logs (by start and end date and time) and archived diagnostic files (by file type and date/time), including heap dumps, out files, JVM Crash, and log files has been added for more precise log retrieval and improved diagnostics management.

To filter Service Logs with file type and date and time, perform the following steps.

  1. On the Logs Files page, click the Services tab.

  2. In the Filter pane,

    1. Select the File type checkbox and click the value link. A list is displayed that shows all file types.

      image-20260305-102324.png

    2. Select the Log Time checkbox, then click the value link to select the filter (is after or is between) to view logs with the required date with time. Use the is between filter to view the logs with the start and end date with time.

      image-20260305-102623.png

To filter Archived Logs with file type and date and time, perform the following steps.

  1. On the Logs Files page, click the Archived tab.

  2. In the Filter pane,

    1. Select the File type checkbox and click the value link. A list is displayed that shows all file types.

      image-20260310-123224.png

       

    2. Select the Log Time checkbox, then click the value link to select the filter (is after or is between) to view logs with the required date with time. Use the is between filter to view the logs with the start and end date with time.

      image-20260310-123145.png

       

Uploading Logs and Dump Files to Secure Kyvos-Managed Storage for Azure

You can push cluster logs and dump files directly to secure Kyvos-managed storage, simplifying diagnostic data collection and enabling faster access for troubleshooting and root cause analysis (RCA).

Note

  • You can upload logs and dump files to Kyvos cloud for service logs, archived files, Kyvos Manager logs, and Kyvos Manager access logs.

  • There will be a single tar file for all files except archived logs; archived logs, already in tar format, will be uploaded as individual tar files.

  • The following procedure demonstrates how to upload the logs for Kyvos Manager. The procedure will remain the same for Services, Archived, Kyvos Manger, and Kyvos Manager Access.

To upload Logs and dump files to Kyvos Cloud, perform the following steps.

  1. On the Logs Files page, click the Kyvos Manager tab. Similarly, you can click Services, Archived, and Kyvos Manager.

  2. Click the Upload to Kyvos Cloud link to upload a single file.

    image-20260427-113656.png


    For bulk upload, click the Upload all to Kyvos Cloud.

    image-20260427-114625.png

  3. The Upload to Kyvos Cloud dialog is displayed.

    image-20260427-114706.png

  4. Enter a unique ID in the Support Ticket ID box. This unique ID will be used by Kyvos Technical Team for troubleshooting.

  5. Read the consent message on the dialog box and select the checkbox.

  6. Enter your Kyvos Manager password and click upload. The logs (tar file) will be uploaded to the Kyvos cloud.

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