25 Upgrade notes for 7.2.15

Breaking changes

Restricted permissions for log files

Zabbix component log files are now created with read-write permissions for the file owner only. Additionally the files are readable by the owner group. All other permissions are denied.

On Linux, this change is from 0666 to 0640 permissions. The change affects Zabbix server, proxy and agent log files. Permissions for Zabbix agent 2 log files were updated from 0644 to 0640 (by removing read permission for others).

In addition, several other files are now created with 0640 permissions:

• UNIX pid files for Zabbix processes
• data export files
• temporary files for icmpping* checks
• log persistent files