Change number of basic DB connections for zabbix

[poco]

Zabbix is built with container and server version is 5.0.24.
DB is using AWS RDS (mysql8.0).
If we build multiple zabbix servers, we will run out of RDS connections. (Current max connections = 61)
Basically, the number of connections from zabbix-server to DB is 25~35. Is there any way to reduce this?
I know how to increase the max number of DB connections, but what I want to know is how to reduce the number of connections from zabbix to db.

mysql> show processlist;
+-----+-----------------+---------------------+-------------+---------+------+------------------------+------------------+
| Id  | User            | Host                | db          | Command | Time | State                  | Info             |
+-----+-----------------+---------------------+-------------+---------+------+------------------------+------------------+
|   5 | event_scheduler | localhost           | NULL        | Daemon  | 1850 | Waiting on empty queue | NULL             |
|  12 | rdsadmin        | localhost:38868     | NULL        | Sleep   |    8 |                        | NULL             |
|  72 | zabbix          | 10.11.100.135:30890 | zabbix50000 | Sleep   |   44 |                        | NULL             |
|  74 | zabbix          | 10.11.100.135:30914 | zabbix50000 | Sleep   |    8 |                        | NULL             |
|  75 | zabbix          | 10.11.100.135:30924 | zabbix50000 | Sleep   |   11 |                        | NULL             |
|  76 | zabbix          | 10.11.100.135:30940 | zabbix50000 | Sleep   |    5 |                        | NULL             |
|  77 | zabbix          | 10.11.100.135:30952 | zabbix50000 | Sleep   |  125 |                        | NULL             |
|  78 | zabbix          | 10.11.100.135:30956 | zabbix50000 | Sleep   |    4 |                        | NULL             |
|  79 | zabbix          | 10.11.100.135:30962 | zabbix50000 | Sleep   |    7 |                        | NULL             |
|  80 | zabbix          | 10.11.100.135:30972 | zabbix50000 | Sleep   |    9 |                        | NULL             |
|  81 | zabbix          | 10.11.100.135:30988 | zabbix50000 | Sleep   |    8 |                        | NULL             |
|  82 | zabbix          | 10.11.100.135:31002 | zabbix50000 | Sleep   |    1 |                        | NULL             |
|  83 | zabbix          | 10.11.100.135:31022 | zabbix50000 | Sleep   |    2 |                        | NULL             |
|  84 | zabbix          | 10.11.100.135:31026 | zabbix50000 | Sleep   |   10 |                        | NULL             |
|  85 | zabbix          | 10.11.100.135:31006 | zabbix50000 | Sleep   |   12 |                        | NULL             |
|  86 | zabbix          | 10.11.100.135:31038 | zabbix50000 | Sleep   |    3 |                        | NULL             |
|  87 | zabbix          | 10.11.100.135:31042 | zabbix50000 | Sleep   |    6 |                        | NULL             |
|  88 | zabbix          | 10.11.100.135:31052 | zabbix50000 | Sleep   |   44 |                        | NULL             |
|  89 | zabbix          | 10.11.100.135:31064 | zabbix50000 | Sleep   |    3 |                        | NULL             |
|  90 | zabbix          | 10.11.100.135:31072 | zabbix50000 | Sleep   |  164 |                        | NULL             |
|  91 | zabbix          | 10.11.100.135:31086 | zabbix50000 | Sleep   |    2 |                        | NULL             |
|  92 | zabbix          | 10.11.100.135:31098 | zabbix50000 | Sleep   |  164 |                        | NULL             |
|  93 | zabbix          | 10.11.100.135:31106 | zabbix50000 | Sleep   |  148 |                        | NULL             |
|  94 | zabbix          | 10.11.100.135:31112 | zabbix50000 | Sleep   |  164 |                        | NULL             |
|  95 | zabbix          | 10.11.100.135:31116 | zabbix50000 | Sleep   |  164 |                        | NULL             |
|  96 | zabbix          | 10.11.100.135:31130 | zabbix50000 | Sleep   |  149 |                        | NULL             |
|  97 | zabbix          | 10.11.100.135:31136 | zabbix50000 | Sleep   |  159 |                        | NULL             |
|  98 | zabbix          | 10.11.100.135:31140 | zabbix50000 | Sleep   |  164 |                        | NULL             |
| 100 | zabbix          | 10.11.100.135:31158 | zabbix50000 | Sleep   |  164 |                        | NULL             |
| 101 | zabbix          | 10.11.100.135:31152 | zabbix50000 | Sleep   |  164 |                        | NULL             |
| 102 | zabbix          | 10.11.100.135:31172 | zabbix50000 | Sleep   |  164 |                        | NULL             |
| 103 | zabbix          | 10.11.100.135:31180 | zabbix50000 | Sleep   |  164 |                        | NULL             |
| 104 | zabbix          | 10.11.100.135:31186 | zabbix50000 | Sleep   |    1 |                        | NULL             |
| 105 | zabbix          | 10.11.100.135:31188 | zabbix50000 | Sleep   |   61 |                        | NULL             |
| 106 | zabbix          | 10.11.100.135:31204 | zabbix50000 | Sleep   |   62 |                        | NULL             |
| 120 | admin           | 10.11.0.187:32822   | NULL        | Query   |    0 | init                   | show processlist |
+-----+-----------------+---------------------+-----------------+---------+------+--------------------+------------------+​

[Hamardaban]

https://www.zabbix.com/documentation/current/en/manual/appendix/config/zabbix_server

StartDBSyncers ?
StartODBCPoller ?

[poco]

I used StartDBSyncers
As a result, I found that it can be reduced to 25->21.
Thank you.

[Hamardaban]

https://www.zabbix.com/documentation/current/en/manual/appendix/config/zabbix_server

StartDBSyncers ?
StartODBCPoller ?

[poco]

I used StartDBSyncers
As a result, I found that it can be reduced to 25->21.
Thank you.