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

# -----------------------------------------------------------------------------

   alarm: ipv4_udperrors_last_collected_secs
      on: ipv4.udperrors
      os: linux freebsd
   hosts: *
    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: up 0 down 5m multiplier 1.5 max 1h
    info: number of seconds since the last successful data collection
      to: sysadmin

# -----------------------------------------------------------------------------
# UDP receive buffer errors

   alarm: 1m_ipv4_udp_receive_buffer_errors
      on: ipv4.udperrors
      os: linux freebsd
   hosts: *
  lookup: sum -1m unaligned absolute of RcvbufErrors
   units: errors
   every: 10s
    warn: $this > 0
    crit: $this > (($status == $CRITICAL) ? (0) : (100))
    info: number of UDP receive buffer errors during the last minute
   delay: up 0 down 60m multiplier 1.2 max 2h
      to: sysadmin

# -----------------------------------------------------------------------------
# UDP send buffer errors

   alarm: 1m_ipv4_udp_send_buffer_errors
      on: ipv4.udperrors
      os: linux
   hosts: *
  lookup: sum -1m unaligned absolute of SndbufErrors
   units: errors
   every: 10s
    warn: $this > 0
    crit: $this > (($status == $CRITICAL) ? (0) : (100))
    info: number of UDP send buffer errors during the last minute
   delay: up 0 down 60m multiplier 1.2 max 2h
      to: sysadmin