Nginx/Posgres as Frontend/Backend(Same Server)

[Bacil123]

Hello All. We are setting up Zabbix with Nginx/Posgres combo as Frontend/Backend(Same Server).
Created initial DB as per Zabbix documentation:
sudo -u postgres createuser --pwprompt zabbix
sudo -u postgres createdb -O zabbix zabbix

Imported initial schema and data:
zcat /usr/share/zabbix-sql-scripts/postgresql/server.sql.gz | sudo -u zabbix psql Zabbix

Configure DB for Zabbix.

After that stuck, as the manual has no info on how to configure Nginx for Zabbix further.
Nginx-1.27.4 was installed successfully manually via nginx-1.27.4.tar and pcre2-10.45.tar.
# /usr/local/nginx/sbin/nginx -V
nginx version: nginx/1.27.4
built by gcc 11.4.1 20231218 (Red Hat 11.4.1-3) (GCC)
configure arguments: --with-http_stub_status_module

./configure; make; 'make install' were run for both Nginx & PCRE, with no errors at all.

# ps -eaf | grep -i nginx
root 69056 1 0 Mar19 ? 00:00:00 nginx: master process /usr/local/nginx/sbin/nginx
nginx 69057 69056 0 Mar19 ? 00:00:00 nginx: worker process
root 183791 183091 0 10:14 pts/0 00:00:00 grep --color=auto -i nginx

# /usr/local/nginx/sbin/nginx -t
nginx: the configuration file /usr/local/nginx/conf/nginx.conf syntax is ok
nginx: configuration file /usr/local/nginx/conf/nginx.conf test is successful

But not sure what will be the next steps to do. also, it gives error Unit nginx.service not found.
# sudo systemctl status nginx
Unit nginx.service could not be found.
# sudo systemctl start nginx
Failed to start nginx.service: Unit nginx.service not found. <= This Unit nginx.service not found has been now resolved: UPDATE

So, the issue mentioned earlier(Unit nginx.service not found) has been resolved as of now. From a non-zabbix google search, a file was modified at this location: /lib/systemd/system/nginx.service
[Unit]
Description=The NGINX HTTP and reverse proxy server
After=syslog.target network-online.target remote-fs.target nss-lookup.target
Wants=network-online.target

[Service]
Type=forking
PIDFile=/usr/local/nginx/logs/nginx.pid
ExecStartPre=/usr/local/nginx/sbin/nginx -t
ExecStart=/usr/local/nginx/sbin/nginx
ExecReload=/usr/local/nginx/sbin/nginx -s reload
ExecStop=/bin/kill -s QUIT $MAINPID
PrivateTmp=true

[Install]
WantedBy=multi-user.target
And, then restarting nginx brought back it up fine.

http:/<IP Address>
Welcome to nginx!
If you see this page, the nginx web server is successfully installed and working. Further configuration is required.

# sudo systemctl restart nginx
# sudo systemctl status nginx
● nginx.service - The NGINX HTTP and reverse proxy server
Loaded: loaded (/usr/lib/systemd/system/nginx.service; disabled; preset: disabled)
Active: active (running) since Thu 2025-03-20 15:26:59 -05; 9s ago
Process: 230537 ExecStartPre=/usr/local/nginx/sbin/nginx -t (code=exited, status=0/SUCCESS)
Process: 230539 ExecStart=/usr/local/nginx/sbin/nginx (code=exited, status=0/SUCCESS)
Main PID: 230540 (nginx)
Tasks: 2 (limit: 203362)
Memory: 1.6M
CPU: 13ms
CGroup: /system.slice/nginx.service
├─230540 "nginx: master process /usr/local/nginx/sbin/nginx"
└─230541 "nginx: worker process"

Mar 20 15:26:59 somebody.corp systemd[1]: Starting The NGINX HTTP and reverse proxy server...
Mar 20 15:26:59 somebody.corp nginx[230537]: nginx: the configuration file /usr/local/nginx/conf/nginx.conf syntax is ok
Mar 20 15:26:59 somebody.corp nginx[230537]: nginx: configuration file /usr/local/nginx/conf/nginx.conf test is successful
Mar 20 15:26:59 somebody.corp systemd[1]: Started The NGINX HTTP and reverse proxy server.

As per Zabbix manual, next steps is to Configure PHP for Zabbix frontend, but I don't find zabbix.conf file in the system

Please advise on the next steps. Thanks in advance.

[cyber]

What s the reason of compiling it by yourself?
https://www.zabbix.com/download?zabb...red_hat_enterp rise_linux&os_version=9&components=server_frontend _agent&db=pgsql&ws=nginx (random redhat example, but others are similar, just different installation tool)

b. Install Zabbix server, frontend, agent
# dnf install zabbix-server-pgsql zabbix-web-pgsql zabbix-nginx-conf zabbix-sql-scripts zabbix-selinux-policy zabbix-agent

If you would use normal packaged version you would get also those packages installed in correct places and your worries would be over...
If you want to go hard way and install from sources, then https://www.zabbix.com/documentation...-web-interface follow examples...
find web content and all config files from source package, place them where you have put your webserver, modify all the config to work with your custom setup...

[Bacil123]

Hi. Thanks. Since I don't have proper access to the web to donwload packages seamlessly, and sudo yum install, fails mostly. So, was doing it a manual(hard) way.

https://www.zabbix.com/forum/zabbix-help/500563-zabbix-6-0-installation-with-rpm-packages-server-no-connectivity-to-web

I have as of now reached too far and almost there. Took some time to install PHP as well as there were some issues related to libxml etc:
configure: error: Package requirements (libxml-2.0 >= 2.9.4) were not met:
Package 'libxml-2.0', required by 'virtual:world', not found >= But now all resolved and done.

One thing now noticing is:
# systemctl | grep zabbix
zabbix-agent.service loaded activating auto-restart Zabbix Agent
zabbix-agent2.service loaded active running Zabbix Agent 2
zabbix-server.service loaded active running
So, currently looking on how to resolve this. agent.service things.

Thanks for the link shared above for 'Installation from sources'. Will follow it and see how it goes.
Best.

[cyber]

Choose either agentd or agent2. No point running both. They cannot be running at same time on same port anyway. Just disable the one you dont want.

[Bacil123]

Hi. Thanks. So after dabbling with nginx without success(always says port 80 in use, and even if changed to port 8080, it says in use), I completely uninstall nginx, and re-installed apache a fresh from tar.gz source. Had to uninstall apache earlier(prior to attempting nginx) which came back to bite me as apache came with original OS install. So, had to install apache with tar.gz. Apache running fine as of now.
# systemctl status httpd
● httpd.service - The Apache HTTP Server
Loaded: loaded (/etc/systemd/system/httpd.service; enabled; preset: disabled)
Drop-In: /usr/lib/systemd/system/httpd.service.d
└─php-fpm.conf
Active: active (running) since Wed 2025-03-26 14:07:48 -05; 52min ago
Main PID: 231135 (httpd)
Tasks: 7 (limit: 203368)
Memory: 5.8M
CPU: 122ms
CGroup: /system.slice/httpd.service
├─231135 /usr/sbin/httpd -k start
├─231136 /usr/sbin/httpd -k start
├─231137 /usr/sbin/httpd -k start
├─231138 /usr/sbin/httpd -k start
├─231139 /usr/sbin/httpd -k start
├─231140 /usr/sbin/httpd -k start
└─231351 /usr/sbin/httpd -k start
Mar 26 14:07:48 sbmdebvs06v.bancolombia.corp systemd[1]: Starting The Apache HTTP Server...
Mar 26 14:07:48 sbmdebvs06v.bancolombia.corp systemd[1]: Started The Apache HTTP Server.

# sudo systemctl status zabbix-server.service
● zabbix-server.service - Zabbix Server
Loaded: loaded (/usr/lib/systemd/system/zabbix-server.service; enabled; preset: disabled)
Active: active (running) since Wed 2025-03-26 17:16:07 -05; 7min ago
Process: 1769 ExecStart=/usr/sbin/zabbix_server -c $CONFFILE (code=exited, status=0/SUCCESS)
Main PID: 1854 (zabbix_server)
Tasks: 52 (limit: 203368)

]# systemctl status zabbix-web-service.service
● zabbix-web-service.service - Zabbix Web Service
Loaded: loaded (/usr/lib/systemd/system/zabbix-web-service.service; enabled; preset: disabled)
Active: active (running) since Thu 2025-03-27 12:07:05 -05; 36min ago
Main PID: 17040 (zabbix_web_serv)
Tasks: 7 (limit: 203368)
Memory: 6.7M
CPU: 7ms
CGroup: /system.slice/zabbix-web-service.service
└─17040 /usr/sbin/zabbix_web_service -c /etc/zabbix/zabbix_web_service.conf
Web_service is now Active, and running. Still can't open the web-page.

Thanks.