Zabbix server is not running: the information displayed may not be current

[amartinsrj]

Prezados, boa noite!
Fiz a instalação do Zabbix na empresa e comecei monitorar alguns dispositivos normalmente. De quinta passada pra cá começou a aparecer a mensagem "zabbix server is not running: the information displayed may not be current" na tela web de acesso. Com isso as informações não atualizam. Segue meu log:

7833:20190916:191054.781 Starting Zabbix Server. Zabbix 4.2.6 (revision d3bb18bbc4).
7833:20190916:191054.781 ****** Enabled features ******
7833:20190916:191054.781 SNMP monitoring: YES
7833:20190916:191054.781 IPMI monitoring: YES
7833:20190916:191054.781 Web monitoring: YES
7833:20190916:191054.781 VMware monitoring: YES
7833:20190916:191054.782 SMTP authentication: YES
7833:20190916:191054.782 Jabber notifications: NO
7833:20190916:191054.782 Ez Texting notifications: YES
7833:20190916:191054.782 ODBC: YES
7833:20190916:191054.782 SSH2 support: YES
7833:20190916:191054.782 IPv6 support: YES
7833:20190916:191054.782 TLS support: YES
7833:20190916:191054.782 ******************************
7833:20190916:191054.782 using configuration file: /etc/zabbix/zabbix_server.conf
7833:20190916:191054.788 current database version (mandatory/optional): 04020000/04020001
7833:20190916:191054.788 required mandatory version: 04020000
7833:20190916:191055.139 __mem_malloc: skipped 8 asked 21368 skip_min 896 skip_max 20424
7833:20190916:191055.139 [file:dbconfig.c,line:94] __zbx_mem_realloc(): out of memory (requested 21368 bytes)
7833:20190916:191055.139 [file:dbconfig.c,line:94] __zbx_mem_realloc(): please increase CacheSize configuration parameter
7833:20190916:191055.139 === memory statistics for configuration cache ===
7833:20190916:191055.139 free chunks of size 24 bytes: 28
7833:20190916:191055.139 free chunks of size 40 bytes: 3
7833:20190916:191055.139 free chunks of size 56 bytes: 3
7833:20190916:191055.139 free chunks of size 72 bytes: 2
7833:20190916:191055.139 free chunks of size >= 256 bytes: 8
7833:20190916:191055.139 min chunk size: 24 bytes
7833:20190916:191055.139 max chunk size: 20424 bytes
7833:20190916:191055.139 memory of total size 8388232 bytes fragmented into 68755 chunks
7833:20190916:191055.139 of those, 67024 bytes are in 44 free chunks
7833:20190916:191055.139 of those, 7221144 bytes are in 68711 used chunks
7833:20190916:191055.139 ================================
7833:20190916:191055.139 === Backtrace: ===
7833:20190916:191055.141 13: /usr/sbin/zabbix_server(zbx_backtrace+0x42) [0x56245891b154]
7833:20190916:191055.141 12: /usr/sbin/zabbix_server(__zbx_mem_realloc+0x169) [0x562458916870]
7833:20190916:191055.141 11: /usr/sbin/zabbix_server(+0x1615b8) [0x5624588e05b8]
7833:20190916:191055.141 10: /usr/sbin/zabbix_server(zbx_hashset_reserve+0xc1) [0x56245892020c]
7833:20190916:191055.141 9: /usr/sbin/zabbix_server(zbx_hashset_insert_ext+0xee) [0x562458920483]
7833:20190916:191055.141 8: /usr/sbin/zabbix_server(zbx_hashset_insert+0x2d) [0x562458920393]
7833:20190916:191055.141 7: /usr/sbin/zabbix_server(DCfind_id+0x86) [0x5624588e0f26]
7833:20190916:191055.141 6: /usr/sbin/zabbix_server(+0x169671) [0x5624588e8671]
7833:20190916:191055.141 5: /usr/sbin/zabbix_server(DCsync_configuration+0x1006) [0x5624588ec8ae]
7833:20190916:191055.141 4: /usr/sbin/zabbix_server(MAIN_ZABBIX_ENTRY+0x746) [0x5624587bf62a]
7833:20190916:191055.141 3: /usr/sbin/zabbix_server(daemon_start+0x2f6) [0x56245891a982]
7833:20190916:191055.142 2: /usr/sbin/zabbix_server(main+0x312) [0x5624587beee2]
7833:20190916:191055.142 1: /lib64/libc.so.6(__libc_start_main+0xf5) [0x7f053e6d9495]
7833:20190916:191055.142 0: /usr/sbin/zabbix_server(+0x3efa9) [0x5624587bdfa9]


O que pode ser, será que podem me dar um help?

Grato,
Alexandre Martins