Update with new functionality for more detailed monitoring

[gullevek]

NOTE: As the current Zabbix Version is 4.0, the templates were exported
with 4.0 version, but the changes itself are compatible with previous
Zabbix versions.

• Fixes
  In the standard PostgreSQL and SR template for process selection.
  The standard process name "postgres" is not set on all PostgreSQL
  installations. For example on RPM based systems it is called
  "postmaster". So all calls using this will not work.
  The call has been changed to use the new Macro entry {$PGPROCESS} with
  the default set name "postgres"

Missing "" in some UserParameter calls

• Updates
  File : pgsql_server_funcs.sh
  Call : pg.transactions
  Add : xlog count (WAL files currently in the WAL folder)
  Item : Transaction log wal segments psql.xlog
  Graph: PostgreSQL Transaction Log

File : pgsql_userdb_funcs.sh
Call : pg.size
Add : detail DB size for index/data/views/sequence/other
Item : [{#DBNAME}] DB Size Data psql.db_size_detail_data[{#DBNAME}]
[{#DBNAME}] DB Size Index psql.db_size_detail_index[{#DBNAME}]
[{#DBNAME}] DB Size Other psql.db_size_detail_other[{#DBNAME}]
[{#DBNAME}] DB Size Sequence psql.db_size_detail_sequence[{#DBNAME}]
[{#DBNAME}] DB Size View psql.db_size_detail_view[{#DBNAME}]
Graph: [{#DBNAME}] DB Size Detail

Changed get Interval for DB Name List pgsql.get.pg.stat_database to 5m
from 1h

• New
  File : pgsql_userdb_funcs.sh
  Call : pg.scans
  User Parameter:
  UserParameter=pgsql.get.pg.scan[*],"$1"/pgsql_userdb_funcs.sh pg.scan "$2" "$3" "$4" "$5"
  Get : pgsql.get.pg.scans[{$PGSCRIPTDIR},{$PGSCRIPT_CONFDIR},{HOST.HOST},{$ZABBIX_AGENTD_CONF},{#DBNAME}]
  Interval: 5m
  Item : [{#DBNAME}] Scans Index psql.scans_index[{#DBNAME}]
  [{#DBNAME}] Scans Sequential psql.scans_sequential[{#DBNAME}]
  Graph: [{#DBNAME}] Scan Types

File : pgsql_userdb_funcs.sh
Call : pg.locks
User Parameter:
UserParameter=pgsql.get.pg.locks[*],"$1"/pgsql_userdb_funcs.sh pg.locks "$2" "$3" "$4" "$5"
Get : pgsql.get.pg.locks[{$PGSCRIPTDIR},{$PGSCRIPT_CONFDIR},{HOST.HOST},{$ZABBIX_AGENTD_CONF},{#DBNAME}]
Interval: 5m
Item : [{#DBNAME}] Locks Access Exclusive psql.locks_accessexclusivelock[{#DBNAME}]
[{#DBNAME}] Locks Access Share psql.locks_accesssharelock[{#DBNAME}]
[{#DBNAME}] Locks Exclusive psql.locks_exclusivelock[{#DBNAME}]
[{#DBNAME}] Locks Row Exclusive psql.locks_rowexclusivelock[{#DBNAME}]
[{#DBNAME}] Locks Row Share psql.locks_rowsharelock[{#DBNAME}]
[{#DBNAME}] Locks Share psql.locks_sharelock[{#DBNAME}]
[{#DBNAME}] Locks Share Row Exclusive psql.locks_sharerowexclusivelock[{#DBNAME}]
[{#DBNAME}] Locks Share Update Exclusive psql.locks_shareupdateexclusivelock[{#DBNAME}]
Graph: [{#DBNAME}] Locks

File : pgsql_userdb_funcs.sh
Call : pg.querylength
User Parameter:
UserParameter=pgsql.get.pg.querylength[*],"$1"/pgsql_userdb_funcs.sh pg.querylength "$2" "$3" "$4" "$5"
Get : pgsql.get.pg.querylength[{$PGSCRIPTDIR},{$PGSCRIPT_CONFDIR},{HOST.HOST},{$ZABBIX_AGENTD_CONF},{#DBNAME}]
Interval: 5m
Item : [{#DBNAME}] Oldest Query psql.querylength_query[{#DBNAME}]
[{#DBNAME}] Oldest Transaction psql.querylength_transaction[{#DBNAME}]
Graph: [{#DBNAME}] Query Length

[pengbo0328]

Thank you for your patch.
I am testing your patch.