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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/memcached.conf
# make sure memcached is running

template: memcached_last_collected_secs
      on: memcached.cache
    calc: $now - $last_collected_t
   units: seconds ago
   every: 10s
    warn: $this > (($status >= $WARNING)  ? ($update_every) : ( 5 * $update_every))
    crit: $this > (($status == $CRITICAL) ? ($update_every) : (60 * $update_every))
   delay: down 5m multiplier 1.5 max 1h
    info: number of seconds since the last successful data collection
      to: dba


# detect if memcached cache is full

template: memcached_cache_memory_usage
      on: memcached.cache
    calc: $used * 100 / ($used + $available)
   units: %
   every: 10s
    warn: $this > (($status >= $WARNING)  ? (70) : (80))
    crit: $this > (($status == $CRITICAL) ? (80) : (90))
   delay: up 0 down 15m multiplier 1.5 max 1h
    info: current cache memory usage
      to: dba


# find the rate memcached cache is filling

template: cache_fill_rate
      on: memcached.cache
  lookup: min -10m at -50m unaligned of available
    calc: ($this - $available) / (($now - $after) / 3600)
   units: KB/hour
   every: 1m
    info: average rate the cache fills up (positive), or frees up (negative) space, for the last hour


# find the hours remaining until memcached cache is full

template: out_of_cache_space_time
      on: memcached.cache
    calc: ($cache_fill_rate > 0) ? ($available / $cache_fill_rate) : (inf)
   units: hours
   every: 10s
    warn: $this > 0 and $this < (($status >= $WARNING)  ? (48) : (8))
    crit: $this > 0 and $this < (($status == $CRITICAL) ? (24) : (2))
   delay: down 15m multiplier 1.5 max 1h
    info: estimated time the cache will run out of space, if the system continues to add data with the rate of the last hour
      to: dba

Samx