DB Upgrade error from 5.4 to 6.0 beta1

[markfree]

While trying to upgrade Zabbix 5.4 to 6.0 beta1 using sources in a Debian 11 enviroment with local MariaDB 10.5.12, I got the following frontend error:

Database error
The Zabbix database version does not match current requirements. Your database version: 5050114. Required version: 5040000. Please contact your system administrator.

Checking Zabbix log, I see that the database upgrade was successful.

26958:20220102:212154.720 completed 97% of database upgrade
26958:20220102:212154.758 completed 98% of database upgrade
26958:20220102:212154.792 completed 99% of database upgrade
26958:20220102:212154.823 completed 100% of database upgrade
26958:20220102:212154.824 database upgrade fully completed
26958:20220102:212154.825 database could be upgraded to use primary keys in history tables
27022:20220102:212154.840 starting HA manager
27022:20220102:212154.861 HA manager started in active mode
26958:20220102:212154.942 server #0 started [main process]
(...)

Also, Zabbix "dbversion" table shows what I think is the correct version.

mysql> select * from dbversion;
+-------------+-----------+----------+
| dbversionid | mandatory | optional |
+-------------+-----------+----------+
| 1 | 5050114 | 5050114 |
+-------------+-----------+----------+

Maybe the frontend was not updated correctly.

Any ideas on why is that?

[dimir]

You need to also upgrade the frontend.

[markfree]

According to the new Zabbix 6 doc, "The minimum required PHP version is 7.2.5".

My current PHP is newer than that.

$ php -v
PHP 7.4.25 (cli) (built: Oct 23 2021 21:53:50) ( NTS )

According to log, the database was upgraded successfuly.

For version 6.0, I found no specific instructions to upgrade the frontend.

Is there a new frontend procedure that was not documented yet?

[Atsushi]

Check the version of zabbix-frontend-php installed.

[markfree]

Atsushi, there is no "zabbix-frontend-php" package since its a sources installation.

[dimir]

Whatever you do, however you install, Zabbix server and Zabbix frontend will only work on the database of the same Zabbix version.

[markfree]

Whatever you do, however you install, Zabbix server and Zabbix frontend will only work on the database of the same Zabbix version.

I understand that.
Both the frontend and Zabbix server are using the same DB.
What I don't understand is why the frontend does not see the correct version.

[dimir]

They both report current version 5050114. Looks the same to me.

[markfree]

They both report current version 5050114. Looks the same to me.

The frontend doesn't seem to know that, as mentioned above.

[markfree]

Only now I've noticed that, after upgrading from 5.4 to 6.0, "zabbix_server.conf" file was not updated during compilation.

After manually copying Server and Agent configuration files, frontend started working correctly.

I'm not sure this is to be expected when updating from sources...