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Knowledge Base

eSight webui display a incorrect time

Publication Date:  2019-07-16  |   Views:  419  |   Downloads:  0  |   Author:  z00263661  |   Document ID:  EKB1000390092

Contents

Issue Description

Customer is at +9:00 timezone. The alarm reported 9 hours later than local time

Handling Process

1、 The alarm time in eSight is 9 hours later than local time in South Korea, and the time of the physical server is normal. By input the query  commandeview.globalTimezoneOffse on the browser console, we make sure that the JRE time in eSight get is UTC+0,which is the reason of the issue.

2、 By analyzing the log of eSightwe found the JRE time in eSight is alright before 8:49 local time in Korea in November 25th,  after this time, the issue appeared.

3、 By analyzing the code of eSight, we confirm that there is a sight which will set the JRE time zone to UTC+0 when using the Automatic Discovery Devices feature. After further confirmation, there are 19 tasks in the business eSight. And there are 3 Automatic Discovery Devices tasks executing at 8:49 local time in Korea in November 25th , which anastomose the time issue appeared.

4、 We set up a laboratory environment, and reproduce the problem in the same scene. With this, we make sure that the Automatic Discovery Devices Mission cause the JRE time zone to UTC+0.


5、 As the further analysis , multiple threads tasks will set the time zone to UTC+0. But if the task executes at the different time ,  the issue wouldn’t appear.

Solution


1.Time zone in eSight is UTC+0 now we need to cancel all the Automatic Discovery Devices Mission which execute at the same time, and then restart eSight. After this, the data in eSight will be all right.

2.Don’t recreate the Automatic Discovery Devices Mission which execute at the same time in eSight.