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Timedrift MonitoringTimedrift Monitoring
Timedrift Monitoring

Timedrift Monitoring

Monitor your host's NTP/Chrony Time Offset!

Extension
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  • Release notes

Overview

Timedrift extension measures time deviation on the host compared to the time source and reports time offset, which can be later used to alert on hosts going out of sync.

Use cases

Network Time Protocol is used to synchronize time across a network of computers. Time synchronization is vital to many distributed systems. You can use Dynatrace to monitor the time offset of your hosts and chart it on your dashboards.

Because Dynatrace detects host time drift, you can also track NTP synchronization failures. If your host isn't synced to any NTP server, you can manually add an NTP server of your choice.

The extension also supports hosts that use chrony. If autoconfiguration is used, the extension will read the /etc/chrony.conf file to find either pool or server configurations. It will also follow any configured confdir and sourcedir configurations.

Dynatrace won't synchronize time on your host but will measure the offset.

Get started

Automatic configuration The reference servers, if available, are automatically obtained from the following sources:

  • Linux: /etc/ntp.conf or /etc/chrony.conf
  • Windows: registry key System\CurrentControlSet\Services\W32Time\Parameters under value NtpServer

Manual configuration If your host isn't synced with a time server, you can pass a list of servers to check the time against.

Details

Additional NTP requests

Because the extension makes its own NTP requests, you can expect an increased load on your Time servers (once per minute per host by default). However, the absolute network overhead will likely be insignificant.

This is configurable between 1 and 15 minutes. If a less frequent check is configured, DAVIS RCA may not give the desired results.

Analyze data

The extension collects two metrics:

  • NTP Time Offset, which is the time drift from the configured time server. Drift can be positive or negative, indicating that the host is ahead of or behind the time received from the NTP server.
  • NTP Errors, which can be used to see if the host has any issues communicating with a time server. This metric is configurable to be captured or not.

Both metrics are automatically injected into the host details screen but can also be added to any data explorer chart or dashboard.

Dynatrace
By Dynatrace
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Extension content

Content typeNumber of items included
screen injections
1
screen chart groups
1
metric metadata
1

Full version history

To have more information on how to install the downloaded package, please follow the instructions on this page.
ReleaseDate

Full version history

v1.1.5

  • DXS-2080
    • Update to fix timestamp issue with metric datapoints

Full version history

v1.1.4

  • Update SDK to v1.2.10 to help with potential keep-alive issue

Full version history

v1.1.3

  • Fixes issue when manually specifying the NTP version for a time server

Full version history

v1.1.2

  • Update to show metric on Host Screen
  • Switch to dt-extensions-sdk

Full version history

  • v1.1.1
    • Extension now will report errors as log message and not metric
    • Updates to wording for configuration

Full version history

No release notes

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