Server is not running after adding of hosts.

[BIGPTK]

Hello, Guys! We in our team tried to use Zabbix as analog of MyQ service. After the laucn of the the Zabbix Server we began add a printers in the Zabbix dashboard. After 442th printer, we noticed, that our zabbix was down. We checked the logs and articles in the internet and do not know what is the problem? Maybe you can help us.

Logs

5786:20201021:095122.662 Starting Zabbix Server. Zabbix 5.0.4 (revision 69c0ad3686).
5786:20201021:095122.662 ****** Enabled features ******
5786:20201021:095122.662 SNMP monitoring: YES
5786:20201021:095122.662 IPMI monitoring: YES
5786:20201021:095122.662 Web monitoring: YES
5786:20201021:095122.662 VMware monitoring: YES
5786:20201021:095122.663 SMTP authentication: YES
5786:20201021:095122.663 ODBC: YES
5786:20201021:095122.663 SSH support: YES
5786:20201021:095122.663 IPv6 support: YES
5786:20201021:095122.663 TLS support: YES
5786:20201021:095122.663 ******************************
5786:20201021:095122.663 using configuration file: /etc/zabbix/zabbix_server.conf
5786:20201021:095122.667 current database version (mandatory/optional): 05000000/05000002
5786:20201021:095122.667 required mandatory version: 05000000
5786:20201021:095122.671 server #0 started [main process]
5787:20201021:095122.672 server #1 started [configuration syncer #1]
5787:20201021:095123.078 __mem_malloc: skipped 9 asked 48088 skip_min 456 skip_max 4032
5787:20201021:095123.078 [file:dbconfig.c,line:96] __zbx_mem_realloc(): out of memory (requested 48088 bytes)
5787:20201021:095123.078 [file:dbconfig.c,line:96] __zbx_mem_realloc(): please increase CacheSize configuration parameter
5787:20201021:095123.078 === memory statistics for configuration cache ===
5787:20201021:095123.078 free chunks of size 24 bytes: 64
5787:20201021:095123.078 free chunks of size >= 256 bytes: 9
5787:20201021:095123.078 min chunk size: 24 bytes
5787:20201021:095123.078 max chunk size: 4032 bytes
5787:20201021:095123.078 memory of total size 7173928 bytes fragmented into 75895 chunks
5787:20201021:095123.078 of those, 15592 bytes are in 73 free chunks
5787:20201021:095123.079 of those, 7158336 bytes are in 75822 used chunks
5787:20201021:095123.079 of those, 1214304 bytes are used by allocation overhead
5787:20201021:095123.079 ================================
5787:20201021:095123.079 === Backtrace: ===
5787:20201021:095123.080 15: /usr/sbin/zabbix_server: configuration syncer [syncing configuration](zbx_backtrace+0x42) [0x55c25507f938]
5787:20201021:095123.080 14: /usr/sbin/zabbix_server: configuration syncer [syncing configuration](__zbx_mem_realloc+0x169) [0x55c25507a82a]
5787:20201021:095123.080 13: /usr/sbin/zabbix_server: configuration syncer [syncing configuration](+0x187577) [0x55c255041577]
5787:20201021:095123.080 12: /usr/sbin/zabbix_server: configuration syncer [syncing configuration](zbx_hashset_reserve+0xc1) [0x55c255085478]
5787:20201021:095123.080 11: /usr/sbin/zabbix_server: configuration syncer [syncing configuration](zbx_hashset_insert_ext+0xee) [0x55c2550856ef]
5787:20201021:095123.080 10: /usr/sbin/zabbix_server: configuration syncer [syncing configuration](+0x1880ec) [0x55c2550420ec]
5787:20201021:095123.080 9: /usr/sbin/zabbix_server: configuration syncer [syncing configuration](DCstrpool_replace+0x55) [0x55c2550421ec]
5787:20201021:095123.080 8: /usr/sbin/zabbix_server: configuration syncer [syncing configuration](+0x18f6fe) [0x55c2550496fe]
5787:20201021:095123.080 7: /usr/sbin/zabbix_server: configuration syncer [syncing configuration](DCsync_configuration+0x1061) [0x55c25504e035]
5787:20201021:095123.080 6: /usr/sbin/zabbix_server: configuration syncer [syncing configuration](dbconfig_thread+0x135) [0x55c254f1147c]
5787:20201021:095123.080 5: /usr/sbin/zabbix_server: configuration syncer [syncing configuration](zbx_thread_start+0x37) [0x55c25508e441]
5787:20201021:095123.080 4: /usr/sbin/zabbix_server: configuration syncer [syncing configuration](MAIN_ZABBIX_ENTRY+0xa02) [0x55c254f02d04]
5787:20201021:095123.080 3: /usr/sbin/zabbix_server: configuration syncer [syncing configuration](daemon_start+0x305) [0x55c25507f584]
5787:20201021:095123.080 2: /usr/sbin/zabbix_server: configuration syncer [syncing configuration](main+0x312) [0x55c254f022b8]
5787:20201021:095123.080 1: /lib64/libc.so.6(__libc_start_main+0xf5) [0x7f7b94b4b3d5]
5787:20201021:095123.080 0: /usr/sbin/zabbix_server: configuration syncer [syncing configuration](+0x47339) [0x55c254f01339]
5786:20201021:095123.082 One child process died (PID:5787,exitcode/signal:1). Exiting ...
5786:20201021:095123.084 syncing trend data...
5786:20201021:095123.084 syncing trend data done
5786:20201021:095123.084 Zabbix Server stopped. Zabbix 5.0.4 (revision 69c0ad3686).

[provels]

5787:20201021:095123.078 __mem_malloc: skipped 9 asked 48088 skip_min 456 skip_max 4032
5787:20201021:095123.078 [file:dbconfig.c,line:96] __zbx_mem_realloc(): out of memory (requested 48088 bytes)
5787:20201021:095123.078 [file:dbconfig.c,line:96] __zbx_mem_realloc(): please increase CacheSize configuration parameter

[BIGPTK]

Thanks a lot! We changed the cashe confuguration and after that it have been working. ^)