Question

Opencart LAMP installation not working for everyone. Site cannot be reached.

Posted September 18, 2019 493 views
Nginx PHP LAMP Stack DigitalOcean DNS Ubuntu 18.04

Hi,
ive setup opencart website on a lamp installation and its working fine for some users but not for all. most of the users are reporting that they are getting:

This site can’t be reached
technamart.co.uk took too long to respond.
ERRCONNECTIONTIMED_OUT

its been over 2-3 weeks so it cant be dns resolve issue. I’ve also checked firewall settings but they are not enabled. Ive also tried restarting everything but still the same.

any help would really be appreciated.
Thanks.

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awaix
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awaix
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  • awaix September 18, 2019
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    tracert:
    Tracing route to technamart.com [206.189.17.36]
    over a maximum of 30 hops:

    1 <1 ms <1 ms <1 ms 51.68.207.252
    2 <1 ms <1 ms <1 ms 10.161.9.61
    3 <1 ms <1 ms <1 ms 10.72.3.22
    4 <1 ms <1 ms <1 ms 10.73.32.38
    5 1 ms <1 ms <1 ms 10.73.249.4
    6 6 ms 1 ms 1 ms 91.121.215.118
    7 2 ms 1 ms 1 ms 195.66.226.25
    8 * * * Request timed out.
    9 2 ms 1 ms 1 ms 206.189.17.36

    Trace complete.

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1 answer
alexdo September 18, 2019

Hello, @awaix

I’ve performed a mtr (My Traceroute) to technamart.com in order to check if there will be some packet loss if I do traceroute for more than 10 minutes. This is the result of my test:
“`
Wed Sep 18 23:14:20 2019
Keys: Help Display mode Restart statistics Order of fields quit
Packets Pings
Host Loss% Snt Last Avg Best Wrst StDev

  1. ae-3.r24.frnkge08.de.bb.gin.ntt.net 0.0% 105 29.3 29.5 26.3 56.2 3.3
  2. ae-5.r24.londen12.uk.bb.gin.ntt.net 0.0% 104 40.6 38.8 36.4 52.3 2.0
  3. ae-1.r25.londen12.uk.bb.gin.ntt.net 0.0% 104 40.0 39.1 36.4 51.8 2.3
  4. ae-7.r00.londen14.uk.bb.gin.ntt.net 0.0% 104 41.3 39.5 37.2 47.1 1.5
  5. ae-1.a01.londen14.uk.bb.gin.ntt.net 0.0% 104 42.1 43.0 40.1 52.8 2.1
  6. 62.73.179.138 0.0% 104 39.4 40.7 37.5 74.7 4.9
    1. 62.73.179.138 80.6% 104 38.9 40.5 37.6 45.0 1.9
    2. 206.189.17.36 0.0% 104 39.4 39.3 37.6 44.4 1.2 ”`

There is packet loss, but have in mind that a lot of servers/routers are configured to block ICMP packets due to security reasons and this might be the reason why you see packet loss when conducting tests with traceroute.

I would recommend to contact Digital Ocean’s support team as well, because they can check if there is any packet loss on some of the routers/switches or to see if any of the IP addresses of your visitors/client were not temporary blocked by any of their Firewalls.

Since the issue is temporary and more than one user was able to replicate/experience the issue, it’s likely that the issue might be outside your server, hence I’m suggesting to contact DO support team, if you haven’t done this yet.

Let me know how it goes.
Alex

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