Websites down, Error 502
I have a Linode with 8 simple WordPress websites running on it. I'm using NGINX, MySQL, PHP and that's about it. More than I would like these website are down, usually for about 10 minutes and then come back up automatically.
There's no errors in the logs and I don't see any huge load, traffic or whatsoever in my dashboard. Please see screenshots below. All websites went down 3 times within the last 24 hours.
I'm using Cloudflare as a CDN. I have another Linode that has basically the same set up and number of sites, visitors, etc. That one barely goes down.
What are my options? I'm using a Nanode right now. Would upgrading to a 2-core and/or more RAM help? When I look at the graphs, I doubt it, but I'm not sure.
Any advice would be appreciated.
3 Replies
For some reason my screenshots are visible in the preview, but not in the actual post…
<img alt="cloudflare" height="650" src="https://www.wadden.xyz/temp/cloudflare.png" title="cloudflare" width="650">
<img alt="cpu" height="650" src="https://www.wadden.xyz/temp/cpu.png" title="cpu" width="650">
<img alt="ipv4" height="650" src="https://www.wadden.xyz/temp/ipv4.png" title="ipv4" width="650">
<img alt="ipv6" height="650" src="https://www.wadden.xyz/temp/ipv6.png" title="ipv6" width="650">
<img alt="disk" height="650" src="https://www.wadden.xyz/temp/disk.png" title="disk" width="650">
https://www.wadden.xyz/temp/cloudflare.png
https://www.wadden.xyz/temp/cpu.png
https://www.wadden.xyz/temp/ipv4.png
https://www.wadden.xyz/temp/ipv6.png
https://www.wadden.xyz/temp/disk.png
Because of this whole COVID-19 situation the traffic to my websites are about 80% less. And no downtime ever since. So this makes me think that the downtime in the past is traffic related, although I don't see anything odd in the graphs in my dashboards. Any thougths…?
See:
https://www.lifewire.com/502-bad-gateway-error-explained-2622939
If you're not seeing any problems, then the only other player in your scenario is Cloudflare. FWIW, I'd post this query there.
-- sw