2FA Stopped Working
It is usually a time synchronization issue.
Diagnosis
- Check your server's time with
date- if the time is off, you need to synchronize it. - Check your NTP configuration with
cat /etc/ntp.conf. - Check with
systemctl status systemd-timesyncd.serviceif your operating system is using systemd to synchronize time. - Check your firewall (
ufw,iptables) rules to see if you have any rules that block time synchronization ports (123/udp, 123/tcp).
Solution
If your operating system is using systemd, you can synchronize the time with sudo timedatectl set-ntp true.
Server Crash During Build
Fix server crashes during Coolify builds by offloading to external build servers, using GitHub Actions, or upgrading server resources for Docker image builds.
Raspberry Pi Crashes
Fix Raspberry Pi crashes on Coolify by upgrading to 4GB+ RAM or limiting Docker memory usage on 2GB models with slow SD card configurations.