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  1. Solution Center
  2. SOL-331

Configuring NTP servers via EXAoperation

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    • Type: How To
    • Status: Published
    • Affects Version/s: None
    • Fix Version/s: None
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      This article guides you through the steps required to configure the automatic time synchronisation via NTP servers on EXASolution clusters.
      If the time shift is greater than one hour it is required to set the time at first manually, which is described in SOL-332.
      There is no downtime need if the time shift is less than one hour.

      Please note that

      1. The cluster nodes constantly exchange configuration and vitality information and depend on proper time synchronisation. While it is possible to manually set the time on EXASolution clusters, it is highly recommended to supply NTP servers for time synchronisation.
      2. The tasks performed in EXAoperation requires a user with at least "Administrator" privileges.

      Prerequisites

      Please ensure that the NTP servers provided to EXAoperation

      1. are connectible from the cluster (port filtering, firewalling) and
      2. can be addressed by name or IP address (i.e.: host names must be resolvable through DNS).
        Check the gap between the currently configured time and the actually time

      Procedure

      1.1 Check currently configured time on the cluster

      • Open 'Services > Monitoring'
      • Check the following value in the field:
      • Open 'Configuration > Network'
      • Check the value in the field "Time Zone"

        Make a rough estimation about the mismatch. If the mismatch is greater than one hour please set the time manually, which is described in SOL-332.

      1.2 Configure NTP Server

      • Open 'Configuration > Network'
      • Click on "Edit"
      • Add the IP-addresses of the server
      • Apply the new configuration

      1.3 Synchronise time on the cluster

      • Open 'Service > Monitoring'
      • Click on "Synchronize Time"

      Now the cluster will synchronise the time with the configured NTP servers constantly.

      Show
      This article guides you through the steps required to configure the automatic time synchronisation via NTP servers on EXASolution clusters. If the time shift is greater than one hour it is required to set the time at first manually, which is described in SOL-332 . There is no downtime need if the time shift is less than one hour. Please note that The cluster nodes constantly exchange configuration and vitality information and depend on proper time synchronisation. While it is possible to manually set the time on EXASolution clusters, it is highly recommended to supply NTP servers for time synchronisation. The tasks performed in EXAoperation requires a user with at least "Administrator" privileges. Prerequisites Please ensure that the NTP servers provided to EXAoperation are connectible from the cluster (port filtering, firewalling) and can be addressed by name or IP address (i.e.: host names must be resolvable through DNS). Check the gap between the currently configured time and the actually time Procedure 1.1 Check currently configured time on the cluster Open 'Services > Monitoring' Check the following value in the field: Open 'Configuration > Network' Check the value in the field "Time Zone" Make a rough estimation about the mismatch. If the mismatch is greater than one hour please set the time manually, which is described in SOL-332 . 1.2 Configure NTP Server Open 'Configuration > Network' Click on "Edit" Add the IP-addresses of the server Apply the new configuration 1.3 Synchronise time on the cluster Open 'Service > Monitoring' Click on "Synchronize Time" Now the cluster will synchronise the time with the configured NTP servers constantly.
    • Category 1:
      Cluster Administration - Monitoring & Logging
    • Category 2:
      Cluster Administration - Cluster Management

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        1. 1.1.1_check_time.png
          83 kB
          Thomas Meinhardt
        2. 1.1.2_check_timezone.png
          76 kB
          Thomas Meinhardt
        3. 1.2.1_edit_network.png
          76 kB
          Thomas Meinhardt
        4. 1.2.2_add_ntp.png
          85 kB
          Thomas Meinhardt
        5. 1.2.3_added_ntp.png
          79 kB
          Thomas Meinhardt
        6. 1.3.1_synchronise_time.png
          88 kB
          Thomas Meinhardt

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            • Assignee:
              CaptainEXA Captain EXASOL
              Reporter:
              CaptainEXA Captain EXASOL
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              • Created:
                Updated: