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eLog V200R007C10 Installation Guide

Describes the installation process of product software. Includes plans, environmental requirements, and procedures for installation, as well as commissioning procedures.
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Configuring the NTP Component

Configuring the NTP Component

This section describes how to install and configure the NTP server and NTP client on the eLog analyzer and collector. For details on NTP configurations on the log source, refer to the related manuals.


The time zone and system time of each server have been manually adjusted to reduce the error to less than 1 minute. A greater time error may cause the initial synchronization to take a longer time.

Configure the eLog analyzer as the NTP server.


The eLog analyzer can act as the NTP server on a network with less than 10 log sources. When over 10 log sources are involved, you need to configure an external clock source for the eLog analyzer, collector, and log sources to prevent the performance deterioration of the eLog.

  1. Use the root account to log in to the operating system of the eLog analyzer. Right-click the desktop to open the terminal.
  2. Configure the NTP service as self-starting.

    #chkconfig ntpd on

  3. Run the vi command to edit the NTP configuration file.

    #vi /etc/ntp.conf

  4. Press the i key on the keyboard to set the vi editor to text entry mode.
  5. Find the following content and delete the comment tag at the beginning. Note that you shall retain other comment tags.

    server             # local clock (LCL)
    fudge stratum 10  # LCL is unsynchronized

  6. Enter restrict NTP Client IP Address mask NTP Client Subnet Mask nomodify, so that the specified NTP clients can synchronize the time settings from the eLog that serves as the NTP server.
  7. Press the ESC key to exit the text entry mode.
  8. Press the colon (:) key, w key, q key, and Enter key to save the configuration file and exit the vi editor.
  9. Restart the NTP service.

    #service ntpd restart

  10. Wait for about 10 minutes and then synchronize the time with the client. Otherwise, a message indicating that the NTP service cannot be found may be prompted.

Configure the eLog analyzer or collector as the NTP client.

  1. Log in to the operating system of the eLog analyzer or collector as the root user.
  2. Right-click the desktop and choose Open in Terminal from the shortcut menu to access the CLI.
  3. Run the yast2 command to access the YaST dialog box.
  4. Choose Network Services > NTP Configuration.

  5. Click Add.

  6. Select Server and click Next.

  7. Enter the IP address of the NTP server in the Address text box.

    Then, click Test to check whether synchronization succeeds. When the message "Server is reachable and responds properly." is displayed, click OK.

    Click OK to complete the configuration. The NTP server information is displayed.

  8. Click OK.
  9. In the YaST Control Center dialog box, choose System > Date and Time.

  10. Click Other Settings and ensure that time zone and time synchronization from the NTP server has been automatically set.

  11. Click Synchronize now to trigger time synchronization from the NTP server.

    After the synchronization succeeds, click Accept to close the window.

Updated: 2019-04-01

Document ID: EDOC1100073937

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