Hi,
I run Proxmox on a OVH server in bridge mode. Each LXC container is assigned one or multiple public IPs. From time to time, some containers suffer from the problem that they can't get accessed from outside anymore (like ICMP or TCP packets). Pinging the IP from the host does not work, pinging it from inside the container does. Also, connections initiated from within the container like pinging an outside host or HTTP connections work as expected.
I've unsuccessfully tried to debug the issue. Unfortunately, I cannot seem to find any related log entries. When collecting packets with tcpdump on the host, the incoming packets are recorded correctly.
After some time, everything usually works again as expected. Sometimes, rebooting the container helps, sometimes it doesn't.
Unfortunately, the problem does not seem to be reliably reproducible. However, I _think_ that is somehow related to running PHP FPM in the container, as accessing certain web applications seems to sometimes trigger the problem. I haven't done extensive testing, but I think that running "ordinary" PHP does not cause the problem. Other containers are unaffected, as are other IPs in the affected container.
Proxmox is the latest version from the pve-no-subscription repository. The problem is not new and has occasionally occurred since I deployed the server.
Any help is appreciated!
Regards
N0T3P4D
I run Proxmox on a OVH server in bridge mode. Each LXC container is assigned one or multiple public IPs. From time to time, some containers suffer from the problem that they can't get accessed from outside anymore (like ICMP or TCP packets). Pinging the IP from the host does not work, pinging it from inside the container does. Also, connections initiated from within the container like pinging an outside host or HTTP connections work as expected.
I've unsuccessfully tried to debug the issue. Unfortunately, I cannot seem to find any related log entries. When collecting packets with tcpdump on the host, the incoming packets are recorded correctly.
After some time, everything usually works again as expected. Sometimes, rebooting the container helps, sometimes it doesn't.
Unfortunately, the problem does not seem to be reliably reproducible. However, I _think_ that is somehow related to running PHP FPM in the container, as accessing certain web applications seems to sometimes trigger the problem. I haven't done extensive testing, but I think that running "ordinary" PHP does not cause the problem. Other containers are unaffected, as are other IPs in the affected container.
Proxmox is the latest version from the pve-no-subscription repository. The problem is not new and has occasionally occurred since I deployed the server.
Any help is appreciated!
Regards
N0T3P4D