Software: Apache/2.4.41 (Ubuntu). PHP/8.0.30 

uname -a: Linux apirnd 5.4.0-204-generic #224-Ubuntu SMP Thu Dec 5 13:38:28 UTC 2024 x86_64 

uid=33(www-data) gid=33(www-data) groups=33(www-data) 

Safe-mode: OFF (not secure)

/usr/lib/netdata/conf.d/health.d/   drwxrwxr-x
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Viewing file:     dbengine.conf (2.12 KB)      -rw-r--r--

# you can disable an alarm notification by setting the 'to' line to: silent

    alarm: 10min_dbengine_global_fs_errors
       on: netdata.dbengine_global_errors
    class: Errors
     type: Netdata
component: DB engine
       os: linux freebsd macos
    hosts: *
   lookup: sum -10m unaligned of fs_errors
    units: errors
    every: 10s
     crit: $this > 0
    delay: down 15m multiplier 1.5 max 1h
     info: number of filesystem errors in the last 10 minutes (too many open files, wrong permissions, etc)
       to: sysadmin

    alarm: 10min_dbengine_global_io_errors
       on: netdata.dbengine_global_errors
    class: Errors
     type: Netdata
component: DB engine
       os: linux freebsd macos
    hosts: *
   lookup: sum -10m unaligned of io_errors
    units: errors
    every: 10s
     crit: $this > 0
    delay: down 1h multiplier 1.5 max 3h
     info: number of IO errors in the last 10 minutes (CRC errors, out of space, bad disk, etc)
       to: sysadmin

    alarm: 10min_dbengine_global_flushing_warnings
       on: netdata.dbengine_global_errors
    class: Errors
     type: Netdata
component: DB engine
       os: linux freebsd macos
    hosts: *
   lookup: sum -10m unaligned of pg_cache_over_half_dirty_events
    units: errors
    every: 10s
     warn: $this > 0
    delay: down 1h multiplier 1.5 max 3h
     info: number of times when dbengine dirty pages were over 50% of the instance's page cache in the last 10 minutes. \
           Metric data are at risk of not being stored in the database. To remedy, reduce disk load or use faster disks.
       to: sysadmin

    alarm: 10min_dbengine_global_flushing_errors
       on: netdata.dbengine_long_term_page_stats
    class: Errors
     type: Netdata
component: DB engine
       os: linux freebsd macos
    hosts: *
   lookup: sum -10m unaligned of flushing_pressure_deletions
    units: pages
    every: 10s
     crit: $this != 0
    delay: down 1h multiplier 1.5 max 3h
     info: number of pages deleted due to failure to flush data to disk in the last 10 minutes. \
           Metric data were lost to unblock data collection. To fix, reduce disk load or use faster disks.
       to: sysadmin