What Can I Do If the Time of CCE Nodes Is Not Synchronized with the NTP Server?

Symptom

In special scenarios, if the ntpd on a node cannot access the NTP server for a long time, the time offset may be too large and cannot be automatically restored.

Problem Detection

You can detect the problem by installing the CCE Node Problem Detector (npd) add-on that has the node time synchronization check item. For details, see CCE Node Problem Detector.

Possible Causes

This is a known issue on nodes running EulerOS or CentOS. Nodes running other types of OSs are not affected by this issue.

This issue has been resolved in clusters of v1.19.16-r7, v1.21.9-r10, and v1.23.7-r10.

Solution

• If your cluster version is v1.19.16-r7, v1.21.9-r10, v1.23.7-r10, or later, the node of this version has been switched to chronyd for time synchronization. Reset the node OS to the latest version to rectify the fault.
• If your cluster version does not meet the requirements, you are advised to upgrade the cluster to v1.19.16-r7, v1.21.9-r10, v1.23.7-r10, or later, and then reset the node OS to the latest version.