Openvz Container IP not working suddenly Solution

This may not apply to everyone but here is what happened to me.

One day my IP connectivity for one container went dead, I could ping the hostnode from it and the hostnode could ping it but there was no external routing.  I restarted the network service but it didn't help.

I checked the routing table inside the VPS and the host and everything looked normal.  I added another different IP on the same subnet to the container and it worked.  Right away I started thinking that that one IP was stolen by another user on the network or that it had been null routed.

Then I decided to do a traceroute to it, I found the last IP it hit was a different hostnode than my server was on.  Then I checked the route table on the other hostnode, sure enough it was routing for my containers IP even though it wasn't running there.

How did this happen?  Because I had a failed attempt at live-migrating this server days before,and when the othe hostnode was restarted it brought up the other copy of my failed migration and added my IP to the routing table, so the two nodes were fighting and advertising the route for my containers IP.

The solution was just a "route del xx.xx.xx.xx venet0" from the hostnode that wasn't running my container.


Tags:

openvz, container, ip, solutionthis, connectivity, ping, hostnode, external, routing, restarted, didn, vps, subnet, user, null, routed, traceroute, server, containers, wasn, migrating, othe, migration, nodes, advertising, quot, xx, venet,

Latest Articles

  • ssh Too many authentication failures not prompting for password
  • LightDM Mint Ubuntu Debian won't start errors Nvidia Graphics
  • WARNING: Unable to determine the path to install the libglvnd EGL vendor library config files. Check that you have pkg-config and the libglvnd development libraries installed, or specify a path with --glvnd-egl-config-path. Linux Ubuntu Mint Debian E
  • How To Upgrade Linux Mint 18.2 to 18.3 to 19.x and 20.x
  • MP3s Won't Play / ID3 Version 2.4 Issues in Cars and Other MP3 Players/CDs/DVDs Solution
  • LXC Containers LXD How to Install and Configure Tutorial Ubuntu Debian Mint
  • GlusterFS HowTo Tutorial For Distributed Storage in Docker, Kubernetes, LXC, KVM, Proxmox
  • Ubuntu Mint audio output not working pulseaudio "pulseaudio[13710]: [pulseaudio] sink-input.c: Failed to create sink input: too many inputs per sink."
  • How To Shrink Dynamically Allocated VM QEMU KVM VMware Disk Image File
  • How To Enable Linux Swapfile Instead of Partition Ubuntu Mint Debian Centos
  • 404 Not Found [IP: 151.101.194.132 80] apt update Debian 11 Bullseye Solution The repository 'http://security.debian.org bullseye/updates Release' does not have a Release file.
  • WARNING: Can't download daily.cvd from db.local.clamav.net freshclam clamav error solution
  • (firefox:9562): LIBDBUSMENU-GLIB-WARNING **: Unable to get session bus: Failed to execute child process "dbus-launch" (No such file or directory) Solution
  • Debian Mint Ubuntu Which Package Provides missing top, ps and w Solution
  • Vbox Virtualbox DNS NAT Network Mode NOT working
  • Docker Tutorial HowTo Install Docker, Use and Create Docker Container Images Clustering Swarm Mode Monitoring Service Hosting Provider
  • Zoom Password Error 'That passcode was incorrect' - Solution Wrong Passcode Wrong Meeting Name
  • How To Startup and Open Remote/Local Folder/Directory in Ubuntu Linux Mint automatically upon login
  • How To Reset Windows Server Password 2019, 2022, 7, 8, 10, 11 Recovery and Removal Guide Using Linux Ubuntu Mint Debian
  • How To Create OpenVPN Server for Secure Remote Corporate Access in Linux Debian/Mint/Ubuntu with client public key authentication