Zabbix server is not running

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Задача:

Ошибка zabbix сервера: Zabbix server is not running: the information displayed may not be current. (

Сервер Zabbix не запущен: отображаемая информация может быть неактивной)

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Ошибка возникла не сервере с операционной системой Ubuntu

root@zbs:/home/asv# lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 20.04.3 LTS
Release:        20.04
Codename:       focal
root@zbs:/home/asv# uname -a
Linux zbs 5.4.0-84-generic #94-Ubuntu SMP Thu Aug 26 20:27:37 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux
root@zbs:/home/asv#

При открытии веб-интерфейса, в самом низу окна появилось сообщение: «

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

При попытки запустить, какой либо скрипт, также ошибка

Cannot execute script.

• Connection to Zabbix server «localhost» refused. Possible reasons:
• 1. Incorrect server IP/DNS in the «zabbix.conf.php»;
• 2. Security environment (for example, SELinux) is blocking the connection;
• 3. Zabbix server daemon not running;
• 4. Firewall is blocking TCP connection.
• Connection refused

Проверяем запущен ли zabbix сервер

Делаем бекап лог-файла, очищаем и перезапускаем сервер и опять проверяем логи.

root@zbs:/home/asv# service zabbix-server stop
root@zbs:/home/asv# cp /var/log/zabbix/zabbix_server.log /var/log/zabbix/zabbix_server.log_2021-09-23
root@zbs:/home/asv# echo > /var/log/zabbix/zabbix_server.log
root@zbs:/home/asv# service zabbix-server start
root@zbs:/home/asv# cat /var/log/zabbix/zabbix_server.log

708375:20210923:101151.286 Starting Zabbix Server. Zabbix 5.4.4 (revision 1765c4f1bc).
708375:20210923:101151.286 ****** Enabled features ******
708375:20210923:101151.286 SNMP monitoring:           YES
708375:20210923:101151.286 IPMI monitoring:           YES
708375:20210923:101151.286 Web monitoring:            YES
708375:20210923:101151.286 VMware monitoring:         YES
708375:20210923:101151.286 SMTP authentication:       YES
708375:20210923:101151.286 ODBC:                      YES
708375:20210923:101151.286 SSH support:               YES
708375:20210923:101151.286 IPv6 support:              YES
708375:20210923:101151.286 TLS support:               YES
708375:20210923:101151.286 ******************************
708375:20210923:101151.286 using configuration file: /etc/zabbix/zabbix_server.conf
708375:20210923:101151.298 current database version (mandatory/optional): 05040000/05040000
708375:20210923:101151.298 required mandatory version: 05040000
708375:20210923:101151.312 server #0 started [main process]
708376:20210923:101151.313 server #1 started [configuration syncer #1]
708376:20210923:101151.538 __mem_malloc: skipped 0 asked 24 skip_min 18446744073709551615 skip_max 0
708376:20210923:101151.538 [file:dbconfig.c,line:102] __zbx_mem_realloc(): out of memory (requested 16 bytes)
708376:20210923:101151.538 [file:dbconfig.c,line:102] __zbx_mem_realloc(): please increase CacheSize configuration parameter
708376:20210923:101151.538 === memory statistics for configuration cache ===
708376:20210923:101151.538 min chunk size: 18446744073709551615 bytes
708376:20210923:101151.538 max chunk size:          0 bytes
708376:20210923:101151.538 memory of total size 7263752 bytes fragmented into 70281 chunks
708376:20210923:101151.538 of those,          0 bytes are in        0 free chunks
708376:20210923:101151.538 of those,    7263752 bytes are in    70281 used chunks
708376:20210923:101151.538 of those,    1124480 bytes are used by allocation overhead
708376:20210923:101151.538 ================================
708376:20210923:101151.538 === Backtrace: ===
708376:20210923:101151.540 11: /usr/sbin/zabbix_server: configuration syncer [syncing configuration](zbx_backtrace+0x52) [0x558eabf24a1a]
708376:20210923:101151.540 10: /usr/sbin/zabbix_server: configuration syncer [syncing configuration](__zbx_mem_realloc+0x164) [0x558eabf1efd1]
708376:20210923:101151.540 9: /usr/sbin/zabbix_server: configuration syncer [syncing configuration](+0x1b7fa3) [0x558eabea0fa3]
708376:20210923:101151.540 8: /usr/sbin/zabbix_server: configuration syncer [syncing configuration](+0x1c6c5c) [0x558eabeafc5c]
708376:20210923:101151.540 7: /usr/sbin/zabbix_server: configuration syncer [syncing configuration](DCsync_configuration+0x14b8) [0x558eabeb1407]
708376:20210923:101151.540 6: /usr/sbin/zabbix_server: configuration syncer [syncing configuration](dbconfig_thread+0x126) [0x558eabd5407b]
708376:20210923:101151.540 5: /usr/sbin/zabbix_server: configuration syncer [syncing configuration](zbx_thread_start+0x3b) [0x558eabf35f5f]
708376:20210923:101151.540 4: /usr/sbin/zabbix_server: configuration syncer [syncing configuration](MAIN_ZABBIX_ENTRY+0xb59) [0x558eabd407ab]
708376:20210923:101151.540 3: /usr/sbin/zabbix_server: configuration syncer [syncing configuration](daemon_start+0x303) [0x558eabf2455c]
708376:20210923:101151.540 2: /usr/sbin/zabbix_server: configuration syncer [syncing configuration](main+0x309) [0x558eabd3fb34]
708376:20210923:101151.540 1: /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf3) [0x7f0f627f70b3]
708376:20210923:101151.540 0: /usr/sbin/zabbix_server: configuration syncer [syncing configuration](_start+0x2e) [0x558eabd3e94e]
708375:20210923:101151.545 One child process died (PID:708376,exitcode/signal:1). Exiting ...
708375:20210923:101151.547 syncing trend data...
708375:20210923:101151.547 syncing trend data done
708375:20210923:101151.547 Zabbix Server stopped. Zabbix 5.4.4 (revision 1765c4f1bc).
root@zbs:/home/asv#

Из логов заслуживаем внимание несколько строк:

709254:20210923:101338.940 __mem_malloc: skipped 0 asked 24 skip_min 18446744073709551615 skip_max 0
709254:20210923:101338.941 [file:dbconfig.c,line:102] __zbx_mem_realloc(): out of memory (requested 16 bytes)
709254:20210923:101338.941 [file:dbconfig.c,line:102] __zbx_mem_realloc(): please increase CacheSize configuration parameter

проверяем конфигурационный файл забикс сервера

root@zbs:/home/asv# grep "CacheSize" /etc/zabbix/zabbix_server.conf
### Option: VMwareCacheSize
# VMwareCacheSize=8M
### Option: CacheSize
# CacheSize=8M
### Option: HistoryCacheSize
# HistoryCacheSize=16M
### Option: HistoryIndexCacheSize
# HistoryIndexCacheSize=4M
### Option: TrendCacheSize
# TrendCacheSize=4M
### Option: TrendFunctionCacheSize
# TrendFunctionCacheSize=4M
### Option: ValueCacheSize
# ValueCacheSize=8M
root@zbs:/home/asv#

Конечно стоит посмотреть графики использования кеша и на основании их уже сделать выводы на сколько стоит увеличить. Но так как я практически не ограничен в оперативной памяти, указал сразу 512M

root@zbs:/home/asv# vi /etc/zabbix/zabbix_server.conf

изменяемый раздел конфига

### Option: CacheSize
#       Size of configuration cache, in bytes.
#       Shared memory size for storing host, item and trigger data.
#
# Mandatory: no
# Range: 128K-64G
# Default:
# CacheSize=8M
CacheSize=512M

Проверяем запуск сервера:

root@zbs:/home/asv# service zabbix-server start
root@zbs:/home/asv# cat /var/log/zabbix/zabbix_server.log

730027:20210923:105730.355 Starting Zabbix Server. Zabbix 5.4.4 (revision 1765c4f1bc).
730027:20210923:105730.355 ****** Enabled features ******
730027:20210923:105730.355 SNMP monitoring:           YES
730027:20210923:105730.355 IPMI monitoring:           YES
730027:20210923:105730.355 Web monitoring:            YES
730027:20210923:105730.355 VMware monitoring:         YES
730027:20210923:105730.356 SMTP authentication:       YES
730027:20210923:105730.356 ODBC:                      YES
730027:20210923:105730.356 SSH support:               YES
730027:20210923:105730.356 IPv6 support:              YES
730027:20210923:105730.356 TLS support:               YES
730027:20210923:105730.356 ******************************
730027:20210923:105730.356 using configuration file: /etc/zabbix/zabbix_server.conf
730027:20210923:105730.365 current database version (mandatory/optional): 05040000/05040000
730027:20210923:105730.365 required mandatory version: 05040000
730027:20210923:105730.375 server #0 started [main process]
730028:20210923:105730.376 server #1 started [configuration syncer #1]
730029:20210923:105730.879 server #2 started [alert manager #1]
730030:20210923:105730.880 server #3 started [alerter #1]
730031:20210923:105730.880 server #4 started [alerter #2]
730033:20210923:105730.881 server #6 started [preprocessing manager #1]
730032:20210923:105730.881 server #5 started [alerter #3]
730035:20210923:105730.882 server #8 started [preprocessing worker #2]
730036:20210923:105730.883 server #9 started [preprocessing worker #3]
730037:20210923:105730.883 server #10 started [lld manager #1]
730038:20210923:105730.883 server #11 started [lld worker #1]
730039:20210923:105730.884 server #12 started [lld worker #2]
730040:20210923:105730.885 server #13 started [housekeeper #1]
730041:20210923:105730.885 server #14 started [timer #1]
730042:20210923:105730.886 server #15 started [http poller #1]
730043:20210923:105730.886 server #16 started [discoverer #1]
730044:20210923:105730.887 server #17 started [history syncer #1]
730045:20210923:105730.887 server #18 started [history syncer #2]
730046:20210923:105730.889 server #19 started [history syncer #3]
730047:20210923:105730.889 server #20 started [history syncer #4]
730048:20210923:105730.889 server #21 started [escalator #1]
730049:20210923:105730.890 server #22 started [proxy poller #1]
730050:20210923:105730.890 server #23 started [self-monitoring #1]
730051:20210923:105730.891 server #24 started [task manager #1]
730052:20210923:105730.891 server #25 started [poller #1]
730054:20210923:105730.892 server #27 started [poller #3]
730055:20210923:105730.893 server #28 started [poller #4]
730056:20210923:105730.894 server #29 started [poller #5]
730057:20210923:105730.894 server #30 started [unreachable poller #1]
730058:20210923:105730.895 server #31 started [trapper #1]
730059:20210923:105730.895 server #32 started [trapper #2]
730053:20210923:105730.896 server #26 started [poller #2]
730062:20210923:105730.897 server #35 started [trapper #5]
730060:20210923:105730.897 server #33 started [trapper #3]
730064:20210923:105730.898 server #37 started [alert syncer #1]
730061:20210923:105730.899 server #34 started [trapper #4]
730063:20210923:105730.899 server #36 started [icmp pinger #1]
730065:20210923:105730.899 server #38 started [history poller #1]
730067:20210923:105730.901 server #40 started [history poller #3]
730068:20210923:105730.902 server #41 started [history poller #4]
730070:20210923:105730.903 server #43 started [availability manager #1]
730066:20210923:105730.903 server #39 started [history poller #2]
730069:20210923:105730.903 server #42 started [history poller #5]
730034:20210923:105730.982 server #7 started [preprocessing worker #1]
root@zbs:/home/asv#
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