Zabbix 5.0 web interface not opening?

Question

Nginx

Installed Zabbix 5.0.3 LTS on Centos7 with postgres b nginx. Everything is according to the manuals and somehow everything starts up and there are no errors in the zabbix itself.
But the web interface is not available. Where to look to understand what the problem is?

[[email protected] ~]# systemctl status zabbix-server zabbix-agent rh-nginx116-nginx rh-php72-php-fpm
● zabbix-server.service - Zabbix Server
Loaded: loaded (/usr/lib/systemd/system/zabbix-server.service; enabled; vendor preset: disabled)
Active: active (running) since Thu 2020-08-06 18:18:04 MSK; 15h ago
Process: 1078 ExecStart=/usr/sbin/zabbix_server -c $CONFFILE (code=exited, status=0/SUCCESS)
Main PID: 1120 (zabbix_server)
CGroup: /system.slice/zabbix-server.service
├─1120 /usr/sbin/zabbix_server -c /etc/zabbix/zabbix_server.conf
├─8236 /usr/sbin/zabbix_server: configuration syncer [synced configuration in 0.034085 sec, idle 60 sec]
├─8239 /usr/sbin/zabbix_server: housekeeper [deleted 0 hist/trends, 0 items/triggers, 0 events, 0 sessions, 0 alarms, 0 aud...
├─8240 /usr/sbin/zabbix_server: timer #1 [updated 0 hosts, suppressed 0 events in 0.000962 sec, idle 59 sec]
├─8241 /usr/sbin/zabbix_server: http poller #1 [got 0 values in 0.001348 sec, idle 5 sec]
├─8242 /usr/sbin/zabbix_server: discoverer #1 [processed 0 rules in 0.001223 sec, idle 60 sec]
├─8243 /usr/sbin/zabbix_server: history syncer #1 [processed 0 values, 0 triggers in 0.000051 sec, idle 1 sec]
├─8244 /usr/sbin/zabbix_server: history syncer #2 [processed 0 values, 0 triggers in 0.000053 sec, idle 1 sec]
├─8245 /usr/sbin/zabbix_server: history syncer #3 [processed 1 values, 1 triggers in 0.003004 sec, idle 1 sec]
├─8246 /usr/sbin/zabbix_server: history syncer #4 [processed 0 values, 0 triggers in 0.000062 sec, idle 1 sec]
├─8247 /usr/sbin/zabbix_server: escalator #1 [processed 0 escalations in 0.002107 sec, idle 3 sec]
├─8248 /usr/sbin/zabbix_server: proxy poller #1 [exchanged data with 0 proxies in 0.000044 sec, idle 5 sec]
├─8249 /usr/sbin/zabbix_server: self-monitoring [processed data in 0.000047 sec, idle 1 sec]
├─8250 /usr/sbin/zabbix_server: task manager [processed 0 task(s) in 0.000739 sec, idle 5 sec]
├─8251 /usr/sbin/zabbix_server: poller #1 [got 0 values in 0.000045 sec, idle 1 sec]
├─8252 /usr/sbin/zabbix_server: poller #2 [got 0 values in 0.000041 sec, idle 1 sec]
├─8253 /usr/sbin/zabbix_server: poller #3 [got 0 values in 0.000039 sec, idle 1 sec]
├─8254 /usr/sbin/zabbix_server: poller #4 [got 1 values in 0.001531 sec, idle 1 sec]
├─8255 /usr/sbin/zabbix_server: poller #5 [got 0 values in 0.000038 sec, idle 1 sec]
├─8256 /usr/sbin/zabbix_server: unreachable poller #1 [got 0 values in 0.000045 sec, idle 5 sec]
├─8257 /usr/sbin/zabbix_server: trapper #1 [processed data in 0.004453 sec, waiting for connection]
├─8258 /usr/sbin/zabbix_server: trapper #2 [processed data in 0.003698 sec, waiting for connection]
├─8259 /usr/sbin/zabbix_server: trapper #3 [processed data in 0.003181 sec, waiting for connection]
├─8260 /usr/sbin/zabbix_server: trapper #4 [processed data in 0.003625 sec, waiting for connection]
├─8261 /usr/sbin/zabbix_server: trapper #5 [processed data in 0.003470 sec, waiting for connection]
├─8262 /usr/sbin/zabbix_server: icmp pinger #1 [got 0 values in 0.000040 sec, idle 5 sec]
├─8263 /usr/sbin/zabbix_server: alert manager #1 [sent 0, failed 0 alerts, idle 5.014437 sec during 5.014661 sec]
├─8264 /usr/sbin/zabbix_server: alerter #1 started
├─8265 /usr/sbin/zabbix_server: alerter #2 started
├─8266 /usr/sbin/zabbix_server: alerter #3 started
├─8267 /usr/sbin/zabbix_server: preprocessing manager #1 [queued 0, processed 9 values, idle 5.004368 sec during 5.004880 s...
├─8268 /usr/sbin/zabbix_server: preprocessing worker #1 started
├─8269 /usr/sbin/zabbix_server: preprocessing worker #2 started
├─8270 /usr/sbin/zabbix_server: preprocessing worker #3 started
├─8271 /usr/sbin/zabbix_server: lld manager #1 [processed 0 LLD rules during 5.006382 sec]
├─8272 /usr/sbin/zabbix_server: lld worker #1 [processed 1 LLD rules, idle 1533.123666 sec during 1533.175347 sec]
├─8273 /usr/sbin/zabbix_server: lld worker #2 [processed 1 LLD rules, idle 3597.964591 sec during 3597.977859 sec]
└─8275 /usr/sbin/zabbix_server: alert syncer [queued 0 alerts(s), flushed 0 result(s) in 0.001983 sec, idle 1 sec]

Aug 06 18:18:04 localhost.localdomain systemd[1]: Starting Zabbix Server...
Aug 06 18:18:04 localhost.localdomain systemd[1]: Can't open PID file /run/zabbix/zabbix_server.pid (yet?) after start: No such ...ectory
Aug 06 18:18:04 localhost.localdomain systemd[1]: Started Zabbix Server.

● zabbix-agent.service - Zabbix Agent
Loaded: loaded (/usr/lib/systemd/system/zabbix-agent.service; enabled; vendor preset: disabled)
Active: active (running) since Thu 2020-08-06 18:18:04 MSK; 15h ago
Process: 1082 ExecStart=/usr/sbin/zabbix_agentd -c $CONFFILE (code=exited, status=0/SUCCESS)
Main PID: 1100 (zabbix_agentd)
CGroup: /system.slice/zabbix-agent.service
├─1100 /usr/sbin/zabbix_agentd -c /etc/zabbix/zabbix_agentd.conf
├─1103 /usr/sbin/zabbix_agentd: collector [idle 1 sec]
├─1104 /usr/sbin/zabbix_agentd: listener #1 [waiting for connection]
├─1105 /usr/sbin/zabbix_agentd: listener #2 [waiting for connection]
├─1106 /usr/sbin/zabbix_agentd: listener #3 [waiting for connection]
└─1107 /usr/sbin/zabbix_agentd: active checks #1 [idle 1 sec]

Aug 06 18:18:04 localhost.localdomain systemd[1]: Starting Zabbix Agent...
Aug 06 18:18:04 localhost.localdomain systemd[1]: Started Zabbix Agent.

● rh-nginx116-nginx.service - The nginx HTTP and reverse proxy server
Loaded: loaded (/usr/lib/systemd/system/rh-nginx116-nginx.service; enabled; vendor preset: disabled)
Active: active (running) since Thu 2020-08-06 18:18:04 MSK; 15h ago
Process: 1159 ExecStart=/opt/rh/rh-nginx116/root/usr/libexec/nginx-scl-helper enable $RH_NGINX116_SCLS_ENABLED -- /opt/rh/rh-nginx116/root/usr/sbin/nginx (code=exited, status=0/SUCCESS)
Process: 1139 ExecStartPre=/opt/rh/rh-nginx116/root/usr/libexec/nginx-scl-helper enable $RH_NGINX116_SCLS_ENABLED -- /opt/rh/rh-nginx116/root/usr/sbin/nginx -t (code=exited, status=0/SUCCESS)
Process: 1113 ExecStartPre=/opt/rh/rh-nginx116/root/usr/libexec/nginx-scl-helper enable $RH_NGINX116_SCLS_ENABLED -- /usr/bin/scl_enabled rh-nginx116 (code=exited, status=0/SUCCESS)
Process: 1090 ExecStartPre=/usr/bin/rm -f /var/opt/rh/rh-nginx116/run/nginx/nginx.pid (code=exited, status=0/SUCCESS)
Main PID: 1188 (nginx)
CGroup: /system.slice/rh-nginx116-nginx.service
├─1188 nginx: master process /opt/rh/rh-nginx116/root/usr/sbin/nginx
├─1191 nginx: worker process
└─1192 nginx: worker process

Aug 06 18:18:04 localhost.localdomain systemd[1]: Starting The nginx HTTP and reverse proxy server...
Aug 06 18:18:04 localhost.localdomain nginx-scl-helper[1139]: nginx: the configuration file /etc/opt/rh/rh-nginx116/nginx/nginx.c...is ok
Aug 06 18:18:04 localhost.localdomain nginx-scl-helper[1139]: nginx: configuration file /etc/opt/rh/rh-nginx116/nginx/nginx.conf ...ssful
Aug 06 18:18:04 localhost.localdomain systemd[1]: Failed to parse PID from file /var/opt/rh/rh-nginx116/run/nginx/nginx.pid: Inv...gument
Aug 06 18:18:04 localhost.localdomain systemd[1]: Started The nginx HTTP and reverse proxy server.

● rh-php72-php-fpm.service - The PHP FastCGI Process Manager
Loaded: loaded (/usr/lib/systemd/system/rh-php72-php-fpm.service; enabled; vendor preset: disabled)
Active: active (running) since Thu 2020-08-06 18:18:04 MSK; 15h ago
Main PID: 1079 (php-fpm)
Status: "Processes active: 0, idle: 10, Requests: 0, slow: 0, Traffic: 0req/sec"
CGroup: /system.slice/rh-php72-php-fpm.service
├─1079 php-fpm: master process (/etc/opt/rh/rh-php72/php-fpm.conf)
├─1184 php-fpm: pool www
├─1185 php-fpm: pool www
├─1186 php-fpm: pool www
├─1187 php-fpm: pool www
├─1195 php-fpm: pool www
├─1196 php-fpm: pool zabbix
├─1197 php-fpm: pool zabbix
├─1198 php-fpm: pool zabbix
├─1199 php-fpm: pool zabbix
└─1201 php-fpm: pool zabbix

Aug 06 18:18:04 localhost.localdomain systemd[1]: Starting The PHP FastCGI Process Manager...
Aug 06 18:18:04 localhost.localdomain systemd[1]: Started The PHP FastCGI Process Manager.
Hint: Some lines were ellipsized, use -l to show in full.

Did this trick with starting nginx

# Fix for Nginx PID problem in Ubuntu 16.04 in an EC2 instance
sudo systemctl stop nginx
sudo mkdir /etc/systemd/system/nginx.service.d
# build the file in root where no sudo is needed
printf “ [Service]\nExecStartPost=/bin/sleep 0.1\n” > override.conf
sudo cp override.conf /etc/systemd/system/nginx.service.d/override.conf
sudo systemctl daemon-reload
sudo systemctl start nginx

No errors , Zabbix web interface is not available(

Answer 1

Is firewall running? Are the ports for the webserver open?