Lateset data do not update for long time

[baalchina]

Hi all, I am running zabbix 5.0.4 lts in a Cent OS 7 system, for about 1 year, everything works fine.

Last week , I found my zabbix server is running out of disk space, and I checked the os, found mysql history_uint is too large. So, I truncate this table.

But then I found my zabbix server didn't update the lastest data, for example , a windows server with zabbix agent, almost all data is 12 hours ago, except the Zabbix agent availability, it is 1min ago.

Then I tried truncate the trends and history table, or restart zabbix-server and mysql service,still not update. After restart the whole server, seems OK for only 12 hours, then still no update.

I found the zabbix-server log, full of this:

4276:20220608:221442.268 Zabbix agent item "vfs.fs.discovery" on host "srv_1111_back" failed: first network error, wait for 15 seconds
4094:20220608:221446.255 resuming SNMP agent checks on host "sw_10.1.1.1_bas": connection restored

So, any ideas?

Thanks a lot.

[baalchina]

hi all, I think maybe I solved this problem, after I did this:
1. I stop zabbix server, and truncate all hisory/trends tables. because someone told me may be the timestamp is wrong.
2. then, start zabbix server, i found poller and preprocess process is 75% busy.
3. and increase the poller and preprocess
4. so far, everything seems fine.

I think the problem maybe because I truncate all the history data, the zabbix is too busy to process the history data so the latest data is not updating?
Well, just a guess.

[shafayat]

how you do increase the poller and preprocess