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# 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
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