7 Upgrade notes for 2.4.0
JSON formatting
The formatting of JSON objects (with tabs and new lines) has been removed, which allows the traffic to be reduced by 20-30% when data is sent between Zabbix services. Additionally, the escaping of forward slash or solidus (/) has also been removed. JSON, formatted as in the previous versions of Zabbix, would still be accepted as valid.
Dropping green status icons in item list
Previously, green status icons were displayed in the last Error column of the item list, for error-free items, which could be misunderstood as if, on the contrary, the items had errors. Now the green icons are displayed no more and, additionally, the column is renamed to Info. For items with problems, as before, a red square icon is displayed in this column.
The same change is applied to the trigger list as well.
Log file handling
Zabbix agent start up log level was changed in order to log information about started agent proceses at DebugLevel set to 0. Now, at DebugLevel=0 only basic information is printed to the logfile/syslog. For agents it is Zabbix version, used config file, started/stopped Zabbix processes. For proxy and server – Zabbix version, enabled features, used config file, DB version, started/stopped Zabbix processes. The logging for Zabbix agent is also consistent on Linux and Windows machines now.
Data source: Zabbix