Ошибка - Get value from agent failed: cannot connect to

[GeorgeKup]

Не опрашивается zabbix агент 4.4.6 (на rhel 7.6) zabbix сервером 4.4.6 , выводит ошибку: Get value from agent failed: cannot connect to
При этом:
1. с сервера команда "zabbix_get -s 10.200.2.116 -k agent.ping" возвращает "1"

2. на rhel 7.6 где установлен агент команда "netstat -tulp | grep zabbix" возвращает:

tcp 0 0 0.0.0.0:zabbix-agent 0.0.0.0:* LISTEN 6667/zabbix_agentd
tcp6 0 0 [::]:zabbix-agent [::]:* LISTEN 6667/zabbix_agentd
udp 0 0 zabbix4db:ntp 0.0.0.0:* 1980/ntpd

3. в логе zabbix агента:

6667:20200312:144206.726 Starting Zabbix Agent [ZABBIX-MARIADB]. Zabbix 4.4.6 (revision 8cc702429d).
6667:20200312:144206.726 **** Enabled features ****
6667:20200312:144206.726 IPv6 support: YES
6667:20200312:144206.726 TLS support: YES
6667:20200312:144206.726 **************************
6667:20200312:144206.726 using configuration file: /etc/zabbix/zabbix_agentd.conf
6667:20200312:144206.726 In zbx_load_modules()
6667:20200312:144206.726 End of zbx_load_modules():SUCCEED
6667:20200312:144206.726 In init_collector_data()
6667:20200312:144206.726 In zbx_dshm_create() size:0
6667:20200312:144206.727 End of zbx_dshm_create():SUCCEED shmid:-1
6667:20200312:144206.727 End of init_collector_data()
6667:20200312:144206.727 agent #0 started [main process]
6668:20200312:144206.727 agent #1 started [collector]
6668:20200312:144206.727 In init_cpu_collector()
6668:20200312:144206.727 End of init_cpu_collector():SUCCEED
6669:20200312:144206.728 agent #2 started[listener #1]
6669:20200312:144206.728 In zbx_tls_init_child()
6668:20200312:144206.728 zbx_setproctitle() title:'collector [processing data]'
6668:20200312:144206.728 In update_cpustats()
6670:20200312:144206.728 agent #3 started[listener #2]
6670:20200312:144206.728 In zbx_tls_init_child()
6668:20200312:144206.728 End of update_cpustats()
6671:20200312:144206.728 agent #4 started[listener #3]
6671:20200312:144206.728 In zbx_tls_init_child()
6668:20200312:144206.728 zbx_setproctitle() title:'collector [idle 1 sec]'
6669:20200312:144206.729 OpenSSL library (version OpenSSL 1.0.1e-fips 11 Feb 2013) initialized
6669:20200312:144206.729 End of zbx_tls_init_child()
6669:20200312:144206.729 zbx_setproctitle() title:'listener #1 [waiting for connection]'
6670:20200312:144206.729 OpenSSL library (version OpenSSL 1.0.1e-fips 11 Feb 2013) initialized
6670:20200312:144206.729 End of zbx_tls_init_child()
6670:20200312:144206.729 zbx_setproctitle() title:'listener #2 [waiting for connection]'
6671:20200312:144206.729 OpenSSL library (version OpenSSL 1.0.1e-fips 11 Feb 2013) initialized
6671:20200312:144206.730 End of zbx_tls_init_child()
6671:20200312:144206.730 zbx_setproctitle() title:'listener #3 [waiting for connection]'
6668:20200312:144207.728 zbx_setproctitle() title:'collector [processing data]'
6668:20200312:144207.728 In update_cpustats()
6668:20200312:144207.729 End of update_cpustats()
6668:20200312:144207.729 zbx_setproctitle() title:'collector [idle 1 sec]'
6668:20200312:144208.729 zbx_setproctitle() title:'collector [processing data]'
6668:20200312:144208.729 In update_cpustats()
6668:20200312:144208.729 End of update_cpustats()
6668:20200312:144208.729 zbx_setproctitle() title:'collector [idle 1 sec]'
6668:20200312:144209.729 zbx_setproctitle() title:'collector [processing data]'