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prat33k

182 posts

Master Geek
+1 received by user: 31


#306052 24-Jun-2023 02:24
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Hey guys,

 

 

 

Just looking to see if someone can help shed some light on the monitoring status differences between HTTP vs ICMP from the same host?

 

 

 

So basically, I have Uptime Kuma and Smoke ping running on 2 different hosts in the same LAN.

 

 

 

With Uptime Kuma, I am monitoring ping checks to multiple Internet hosts as well as some HTTP page checks. For some reason, I am seeing issues with HTTP checks where there are no issues at all with ping checks for any hosts on both smokeping and uptime kuma.

 

 

 

For example, 

i am seeing, all these issues on HTTP checks to google.com. These timing also seem to match with another HTTP check I have for a friend's web server hosted outside of NZ. Also these timing seem to coincide with actual issues with my browsing on other devices in the network.



However, no issues for DNS resolution checks on my Adguard or any ping variations as well like can see below - 

 

 

 

 

 

 

This is from 2deg connection based in AKL.

 

 

 

Thanks in advance


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RunningMan
9184 posts

Uber Geek
+1 received by user: 4834


  #3094273 24-Jun-2023 07:14
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It doesn't explain your browsing issues, but ICMP and HTTP(S) would frequently be handled by different services on any given server. They can also be allocated different priorities.




fe31nz
1294 posts

Uber Geek
+1 received by user: 423


  #3094568 24-Jun-2023 22:02
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If a web server box is having software problems, http/https may not work (for example, the web server may be shut down).  But if the box itself is still running, it will likely still reply to ICMP pings if it did before the problem, as those replies come from the TCP/IP stack, not the web server.


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