Zabbix upgrade failure from 3.2 to 3.4

[irfad]

Server info:

Operating system:
Ubuntu 16.04.4 LTS

Current Zabbix server version:
zabbix_server (Zabbix) 3.2.11
Revision 76339 27 December 2017, compilation time: Dec 27 2017 15:21:29

Zabbix NVPS:
1245

Database:
MySQL

...

[meg]

Hi there,

I am trying to use Mysql template from Zabbix. I have already configurate:
- I have create users for zabbix in mysql
- I add the user at my.cnf, for mysqladmin and mysql
- userparameter_mysql.conf with the path of my.cnf at Home

But at Zabbiz...

[rodelapena]

zabbix is failing to query the mysql database with this error:

Query failed MySQL server has gone away

but it doesnt fall, only doenst do all the querys, only a few, i can see the state of some hosts, but not all.

i read the forum about this behavior but...