Shadow-Here
Server : Apache/2.4.41 (Ubuntu)
System : Linux cls 5.4.0-216-generic #236-Ubuntu SMP Fri Apr 11 19:53:21 UTC 2025 x86_64
User : iscuser ( 1001)
PHP Version : 7.4.12
Disable Function : shell_exec,pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wifcontinued,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl_signal_get_handler,pcntl_signal_dispatch,pcntl_get_last_error,pcntl_strerror,pcntl_sigprocmask,pcntl_sigwaitinfo,pcntl_sigtimedwait,pcntl_exec,pcntl_getpriority,pcntl_setpriority,pcntl_async_signals,pcntl_unshare,
Directory :  /usr/lib/netdata/conf.d/health.d/

Upload File :
current_dir [ Writeable ] document_root [ Writeable ]

 

Command :
Current File : //usr/lib/netdata/conf.d/health.d/ram.conf
# you can disable an alarm notification by setting the 'to' line to: silent

   alarm: used_ram_to_ignore
      on: system.ram
      os: linux freebsd
   hosts: *
    calc: ($zfs.arc_size.arcsz = nan)?(0):($zfs.arc_size.arcsz)
   every: 10s
    info: the amount of memory that is reported as used, but it is actually capable for resizing itself based on the system needs (eg. ZFS ARC)

   alarm: ram_in_use
      on: system.ram
      os: linux
   hosts: *
#   calc: $used * 100 / ($used + $cached + $free)
    calc: ($used - $used_ram_to_ignore) * 100 / ($used - $used_ram_to_ignore + $cached + $free)
   units: %
   every: 10s
    warn: $this > (($status >= $WARNING)  ? (80) : (90))
    crit: $this > (($status == $CRITICAL) ? (90) : (98))
   delay: down 15m multiplier 1.5 max 1h
    info: system RAM used
      to: sysadmin

   alarm: ram_available
      on: mem.available
      os: linux
   hosts: *
    calc: ($avail + $system.ram.used_ram_to_ignore) * 100 / ($system.ram.used + $system.ram.cached + $system.ram.free + $system.ram.buffers)
   units: %
   every: 10s
    warn: $this < (($status >= $WARNING)  ? (15) : (10))
    crit: $this < (($status == $CRITICAL) ? (10) : ( 5))
   delay: down 15m multiplier 1.5 max 1h
    info: estimated amount of RAM available for userspace processes, without causing swapping
      to: sysadmin

## FreeBSD
   alarm: ram_in_use
      on: system.ram
      os: freebsd
   hosts: *
    calc: ($active + $wired + $laundry + $buffers - $used_ram_to_ignore) * 100 / ($active + $wired + $laundry + $buffers - $used_ram_to_ignore + $cache + $free + $inactive)
   units: %
   every: 10s
    warn: $this > (($status >= $WARNING)  ? (80) : (90))
    crit: $this > (($status == $CRITICAL) ? (90) : (98))
   delay: down 15m multiplier 1.5 max 1h
    info: system RAM usage
      to: sysadmin

   alarm: ram_available
      on: system.ram
      os: freebsd
   hosts: *
    calc: ($free + $inactive + $used_ram_to_ignore) * 100 / ($free + $active + $inactive + $wired + $cache + $laundry + $buffers)
   units: %
   every: 10s
    warn: $this < (($status >= $WARNING)  ? (15) : (10))
    crit: $this < (($status == $CRITICAL) ? (10) : ( 5))
   delay: down 15m multiplier 1.5 max 1h
    info: estimated amount of RAM available for userspace processes, without causing swapping
      to: sysadmin

Samx