What does "LAST SYNC" actually mean?

Here is the description I picked from the OrionAdminsitratorGuide.

LastSync

Time and date of last Node/Interface/Volume database and memory synchronization.

Yes, but that is an ambiguous definition.

After the "Time and date of last Node/Interface/Volume database and memory synchronization", do you know:

(A) The machine is actually there and talking

or

(B) We gave it a whack

??

"LastSync" value keeps updating every time a sync runs in the database.It does not store all the past values.In a simple explanation,it erases and updates with new date and time in the Nodes table.

When a Node is deleted then it would not have a LastSync value to validate.If the Node is present then LastSync value can be used as a condition to validate.

Let me know if this explanation helps.

No it doesn't-- but thanks for the attempt :-)

"Last Sync" could mean one of two things,

(A) An attempt to contact a system-- a node-- irrespective of the outcome

or

(B) Actually talking to the node, an affirmative outcome.

So in the case of (A) it means "the last time I tried" and in the case of (B) the last time I succeeded.

So I would like to know, which does it mean, A or B?

John

John, I will keep you posted with answers soon after discussing with Dev.

Thank you, appreciate your time!

John

Dev has indicated that the answer is more like option (B):

"Last Sync" is the latest successful synchronization, or update, to the database. It doesn't really tell you what it successfully updated, just that it updated something.

HTH,

So, what does it mean if the Last Sync time is some ridiculously high number (in red)? What are the possible causes?

Thanks.

From my experience a high Last Sync value means that there is a problem with your database and your poller(s) are not communicating with it so no new data is being stored

So, I guess my next question should be, is there any field that does indicate the last successful communication with the node?