OCI: Port 80 and 443 Became Inaccessible After Reboot
APPLIES TO
Oracle Cloud Infrastructure - Version N/A and later
Linux x86-64
SYMPTOMS
3rd party Web Application Site became inaccessible after server reboot even the port 80 and 443 is up and running
netstat – tulpn | egrep "80|443" tcp 0 0 0.0.0.0:443 0.0.0.0:* LISTEN 0 37712 2831/nginx: master off (0.00/0/0) tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN 0 37711 2831/nginx: master off (0.00/0/0)
CAUSE
Firewalld service started upon reboot.
Starting firewalld - dynamic firewall daemon... [ OK ] Started firewalld - dynamic firewall daemon.
Checked the status of of firewalld service
firewalld.service - firewalld - dynamic firewall daemon Loaded: loaded (/usr/lib/systemd/system/firewalld.service; enabled; vendor preset: enabled) Active: active (running) since Tue 2023-11-21 21:41:10 -03; 6min ago Docs: man:firewalld(1) Main PID: 1365 (firewalld) Tasks: 2 (limit: 48663) Memory: 31.6M CGroup: /system.slice/firewalld.service └─1365 /usr/libexec/platform-python -s /usr/sbin/firewalld --nofork --nopid Nov 21 21:41:09 hostname systemd[1]: Starting firewalld - dynamic firewall daemon... Nov 21 21:41:10 hostname systemd[1]: Started firewalld - dynamic firewall daemon.
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