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VPS / virtual private servers => Virtual servers - general => Topic started by: sbrs on June 20, 2022, 10:10:03 AM

Title: VS free 2.1 repeatedly becomes unreachable
Post by: sbrs on June 20, 2022, 10:10:03 AM
Hi,

my VS free 2.1 repeatedly becomes unreachable after about 1 day. When I perform a web reboot, it becomes reachable again, but after 1 day, it is unreachable again, and so forth.

This problem first occurred around 4 weeks ago. Before that, the VS was working OK. I have not logged into the VS for many months, nor made any changes. I now logged in and checked that both the disk and RAM is only used by about 10%.

Why could this be happening?

Thanks
Title: Re: VS free 2.1 repeatedly becomes unreachable
Post by: Forum-Support2 on June 20, 2022, 11:45:55 AM
Hello,

we recommend to check, if your issue is network related or not.

We recommend to do the following:

1.) Deactivate all services except SSH.
2.) Wait if issue occurs again.

If issue occurs again, please compare the routes (if you have) before the issue occurs first time and now.

If nothing help, please post IPv6 here.
Title: Re: VS free 2.1 repeatedly becomes unreachable
Post by: sbrs on June 21, 2022, 09:41:24 AM
After reboot there are no routes at all, even though the link is up and /etc/network/interfaces seems to configure routes. This file seems to be pre-provisioned, i.e. not changed by me. See attachment.

When the problem occurs, the VS is not reachable through the web console so I cannot check for routes. :)

The VS only runs nginx, no database, nothing else.
Title: Re: VS free 2.1 repeatedly becomes unreachable
Post by: sbrs on June 22, 2022, 08:22:13 AM
I have now disabled all services, rebooted, server was reachable again although no routes were shown. After some time the server again became unreachable so that I could not even ssh into it on IPv6.

Is it normal that no routes are shown in these VS? How can it be reachable without even a default gateway?

My server's IPv6 address is 2a02:180:6:1::8a2

Thanks
Title: Re: VS free 2.1 repeatedly becomes unreachable
Post by: loulz on June 22, 2022, 02:43:44 PM
I am in the same situation a few days ago. And my operating system is centos 8. 

I tried to solve it by installing NetworkManager,but I failed. I coudn't reach the server even if I webreboot the server.

After that, I decided to reinstall the OS to Rocky 8. But the disaster happened , the reinstalltion can't complete.
Title: Re: VS free 2.1 repeatedly becomes unreachable
Post by: loulz on June 26, 2022, 03:09:27 PM
Even if I have reinstall my os, it will still be unreachable in 12 hours.   I will try not to install anything to check if it will be unreachable
Title: Re: VS free 2.1 repeatedly becomes unreachable
Post by: sbrs on June 30, 2022, 12:36:01 PM
The problem still exists. My VS becomes unreachable a few hours after each reboot.
Could someone please comment on why the routing does not work, what is the expected network configuration? Why can the /etc/network/interfaces shown above (2022-06-21_09-35-53.png) not be applied? I never touched this file, so it was pre-provisioned.
If the file should contain something else, please advise.
Thanks
 
Title: Re: VS free 2.1 repeatedly becomes unreachable
Post by: Forum-Support2 on July 01, 2022, 09:31:07 PM
if you have done a basic install and never touched the network config, your issue is ressources driven, this means you must check your server for a ressource shortage i.e. RAM shortage that may kill processes.