====== HANA replication LOG retention statistics ======
  Log retention is important in the replication mechanism as it defines the capacity of the primary
   system to absorb and store changes waiting to be sent toward the secondary system. 
  If logs are produced quicker than consumed for a long time, the replication will be compromised.
   This monitor will detect those situations and send alarms so you can react before replication stops.
===== Configuration hints =====
Create new rule in the table. You can customize the filter in order to define a specific configuration for a given service or host.

==== Minimum retention time ====
  * The minimum time expected before reaching the retention limit parameter settings. Send an alarm if below threshold

==== Minimum time before disk full ====
  * The minimum time expected before a disk full situation. Send alarm if below threshold
==== Max LOG backup avg. daily size ====
  * The maximum average size of generated log backup on a daily basis, computed over a configurable period.
  * Send an alarm if the average size is over a limit.
  * This is an indicator of a growing number of changes to replicate.
===== Atomic fields =====
^Nb of days for computing average period|Defines the period to compute average backup size|

===== Surveillance table =====
^Parameter^Description^
^Active|To enable/disable a rule|
^Host|A filter on the host|
^Service|A filter on the service|
^Minimum log retention time|The minimum time expected before reaching the retention limitparameter settings.|
^Minimum time before disk full|The minimum time expected before a disk full situation|
^Maximum average log size per day|The maximum average size of generated log backup on a daily basis|
^Severity|The severity of the generated alert.|
^Auto clear|If checked, the alarm will be cleared as soon as the alarm condition is not met anymore|
^Alarm tag|This field allows to add custom text within the alarm message. %MSG% variable will containthe actual generated message and can be used such as: "my_prefix %MSG% my_suffix". By default, tagwill be used as prefix.|
^enable Alarm|To enable alarm sending|
^enable QOS|To enable metric sending|
===== Generated metrics =====
 
^metricId^metricUnit^metricTarget^metricDescription^
|REPLICATION_LOG_RETENTION_REMAINING_DAYS|Days|HOST:PORT|Sends the remaining days before reaching retention limit|
|REPLICATION_LOG_BACKUP_DISK_FULL_REMAINING_DAYS|Days|HOST:PORT|Sends the remaining days before LOG disk full|
|REPLICATION_LOG_BACKUP_DAILY_AVG_SIZE|Megabytes|HOST:PORT|Sends average size of daily LOG backup|