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Troubleshooting

NOS console 502 after Core X5 reboot

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SSara Iqbalasked · Jul 19, 2026, 08:12 AM
Scheduled reboot of our X5 last night, everything came up clean per systemctl, but the web console (nos.local) throws 502 for the first ~7 minutes. Once it recovers it stays healthy. Is this expected — some warmup pass? Or should I open a ticket?
#console#502#x5#reboot
1 reply·226 views
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NNabil Zaidireplied · Jul 19, 2026, 02:52 PM
Expected — the front-end waits for the AI engine + reporting service to finish their startup handshake before serving. ~5-8 minutes on X5, closer to 3 on X20. If you want the console up earlier, you can set `frontend.wait_for=core` in /etc/nos/frontend.conf but then some pages will show partial data until the other services catch up. Most operators leave it on default.
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