For several hours my website does not respond, it has time-outs or pages are loading slow at 30 seconds.
This happens for 2-5 hours, then it is gone.
This happens the 3th time this year, and I think it is regulary (3 months)
My apache server is IDLE in the meantime
My webhost says everything on the server is working perfect
My DNS (cloudfare) says their system worsk perfect, host does not respond.
After 2-5 hours it is over, website is FAST again (0,250ms load time)
I have this issue now for the 3th time this year, and I can not find out why. It seems to be happen every few months, the first time on Feb 10, and then somewhen in August, now Dec. 8
I must admit: If I would not watch the website, I might miss it (but I get emails from uptime-robot now). In February the out-time was long, but in August it was just 2 hours so I did not really care cause I had a feeling it will be gone soon. This time it was heavy, 6 hours, and I lost a lot of sales cause it was Sunday evening…
I now think the SSL letsencrypt renewal might have to do with it. Althoug the renewal was on Dec 6 and the error occurs now on Dec 9. But I restarted the server today…
Nobody is able to help me.
Whenever I start to ask people they help me maybe 2-3 hours later and then the problem is gone. So nothing to look for… sorry, we can not help, maybe it was a DDos (no it wasnt, there is no load on the Server)
The webserver-support answered a few times while the site was down/slow, but they were only looking on their server, and the server works fast, 1% CPU load (well nothing is going), no problem there they said…
Support told me my SSL port is closed…
PORT STATE SERVICE
22/tcp open ssh
25/tcp open smtp
53/tcp open domain
80/tcp open http
443/tcp filtered https
3306/tcp open mysql
(it says filtered…)
The issue is even more complex:
While I am always unable to visit the website, I see some customers can still use it (like 30%). But it might be slow for them (maybe 5-10 seconds load time), I have 30 seconds load time. Depends on the region I guess.
I have 2 domains (mirrowed) that serve the same site: When the problem was solved I was on my samsung-pad and could surf FAST on Domain2, while Domain1 was still un-responsive (time-out-loading). That was very confusing, it seemed the the domain itself has a connection problem/ssl problem/routing problem? (as I said, server is very fast).
I switched from my pad to my notebook, here both domains already work fast.
(I will restart the pad now) No, restart did not solve the problem DOMAIN 1 is still not responding on my pad, while working fast on my notebook.
Both of these domains point to the same vServer and scripts, they just serve an english and an german layout.
What could cause this problem?
Is it a SSL -> browser -> new certificate - issue?
I do not know where to start…
I really hate this problem now cause when it appears there is usually no one around to ask, and nobody says this is my responsibility. As it comes regulary, I assume it hs to do with the certificate update (90 days)