Troubleshooting

RHEL firewalld (post‑install)

On RHEL, the default firewall can block incoming syslog traffic. After installing LogZilla, allow common ports and make the change permanent:

bash
Wrap: OnCopyFullscreen
sudo firewall-cmd --list-all
sudo firewall-cmd --add-port=514-516/udp --add-port=514-516/tcp --add-port=601/tcp --add-port=6514/tcp
sudo firewall-cmd --runtime-to-permanent
sudo firewall-cmd --list-all

Note: Required ports depend on how the environment is configured. The above ports cover typical syslog (RFC 3164/5424) and TLS syslog.

Check Docker health

bash
Wrap: OnCopyFullscreen
docker info
docker ps | grep lz_

Check system resources

• Disk (Docker data):

bash
Wrap: OnCopyFullscreen
df -h /var/lib/docker

• CPU and memory:

bash
Wrap: OnCopyFullscreen
top
free -h

Log locations

• Primary LogZilla log file:

text
Wrap: OnCopyFullscreen
/var/log/logzilla/logzilla.log

If issues persist, capture recent errors or warnings from the log and share with support.