Zabbix error, part of the graphs is not displayed

[varhin23]

Hi

There is a strange problem .. In zabbix, they stopped showing the data of several graphs (for example, incoming / outgoing traffic, writing / reading a disk). In this case, nothing has been changed, tell me where to dig?

service zabbix-server status

[B]Process: 1268 ExecStop=/bin/kill -SIGTERM $MAINPID (code=exited, status=1/FAILURE)[/B]

zabbix logs

housekeeper [deleted 423656 hist/trends, 0 items/triggers, 6 events, 16 problems, 0 sessions, 0 alarms, 0 audit items in 83.798349 sec, idle for 1 hour(s)]

I use MariaDB, on request select count (*) from housekeeper - I get:
Database changed MariaDB [zabbix]> select count(*)from housekeeper;

 Database changed MariaDB [zabbix]> select count(*)from housekeeper; +----------+ | count(*) | +----------+ |      248 | +----------+ 1 row in set (0.01 sec)

I use:
MariaDB 10.1.037-0+deb9ul
Zabbix 4.0.5
Debian stretch 9.8

If you manually unlink and clear the host from the template, then connect it back. Everything starts to work, and show metrics on graphs.

But I can’t understand where to dig, whether zabbix updates to 4.2 will help with the solution of this problem.

p.s. By default, housekeeper was set to 365 days before cleaning, the server gets the metrics 130 days. Now set by default to 90 days.