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Server Not Accepting Incoming Connections (Random)

Discussion in 'General Discussion' started by Christopher Zeman, Jul 1, 2015.

  1. Christopher Zeman

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    I am having a strange problem with my server. I just migrated away from Plesk in the last few days and installed WHM/cPanel on a VPS with 4 cores, 8GB RAM and CentOS 7. The server will, at random times, suddenly quit accepting incoming connections for all services (WHM/cPanel, HTTP, HTTPS, SSH, etc.) and will recover a few minutes later or sooner if I restart firewalld. The fact that it recovers after restarting firewalld might be a coincidence since I've even turned off firewalld and the problem persists. There are less than 20 accounts and all low-bandwidth sites. I own the physical server and all of the other VMs aren't experiencing the same issue so I know it's not the physical connection.

    I could really use some suggestions on what to check. This is getting frustrating.

    Thank you,
    Chris
     
  2. Christopher Zeman

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    It *seems* I may have fixed it. My NIC was configured for both IPv4 and v6. I don't have any IPv6 addresses assigned to me at the datacenter so I disabled it. I haven't had a problem in at least 14 hours that I'm aware of.

    Chris
     
  3. cPanelMichael

    cPanelMichael Forums Analyst
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