For zabbix5.0, the default alarm is generated when the disk usage exceeds 80%, but I want to change the alarm to exceed 90%. How should I change the alarm? I did not find the modification, and I used the Template 'Template OS Linux by Zabbix Agent Active'.
go to that host under configuration -> hosts, choose you host, click on Macros -> inherited and host macros, look for {$VFS.FS.PUSED.MAX.WARN} (default 80) and change it, you should also change {$VFS.FS.PUSED.MAX.CRIT} (default 90)