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I've just noticed that after rebooting a proxmox server, there are new lines added to /etc/hosts inside Centos containers. They look like this: ::1 localhost This is undesirable, since my containers have no ipv6 support (and I don't need them to have it). How can I disable this?

I just wanted to follow up on this. My problem was that I set the innodb_buffer_pool_size too high in my mysql settings which led to extreme swapping. You should not worry about high RAM usage - it's normal.

I use heartbeat to move the primary IP address between the eth0 interface of my 2 containers. For the internet connection to work, heartbeat requires the gateway to already be set in the interface configuration. When I set the gateway in the container settings and leave the IP address empty, it...

I just set the ip to 127.0.0.1 and looks like everything worked. Is this a good idea?

I have a keepalived environment with 2 hosts which decide which one is master and which one is slave. The IP is set within the container by keepalived on the host which is master at the moment. The hosts communicate via eth1 which is configured in proxmox. Because eth1 loads with a delay, I...

I created a Centos 6 container with a static network interface. However, the container's interface configuration file /etc/sysconfig/network-scripts/ifcfg-eth0 shows dhcp: This leads to a delayed load of eth1 which causes problems in my systems.

I'm using the default 4.4-12 install. Under heavy load I started noticing this in the logs: Mar 17 14:14:01 w13 kernel: [2777496.613245] nf_conntrack: table full, dropping packet I use the Proxmox firewall only for the "datacenter" (which covers the node I assume), but not on the node or...

I've noticed that the default net.netfilter.nf_conntrack_max is too low and I was hitting connection problems too often. Dropped connections, connection failures, nasty stuff. I had to manually increase net.netfilter.nf_conntrack_max to 1000000000 in all my proxmox nodes. Perhaps, the staff...

I don't use ZFS. I set "vm.swappiness = 1" in sysctl.conf and did "sysctl -w -p" but it didn't help much. My userspace uses only 61% of RAM, but still, I am 3 Gb deep in swap. And that number sometimes goes deeper to 5-6 Gb. smem -w -p Area Used Cache...

I'm using latest proxmox. My userspace uses only 61% of RAM, but still, I am 3 Gb deep in swap. And that number sometimes goes deeper to 5-6 Gb. smem -w -p Area Used Cache Noncache firmware/hardware 0.00% 0.00% 0.00% kernel image...

Proxmox node: root@pve:~# free -mh total used free shared buffers cached Mem: 31G 30G 791M 46M 16M 416M -/+ buffers/cache: 30G 1.2G Swap: 8.0G 3.1G 4.9G Container 1: ree -mh...

My bad.

If nobody else helps with your problem, I would recommend to use proxmox firewall only for the proxmox host itself. All the containers should use their own private firewalls.

Ok, so here's a little update. Centos 7 ignores the swap setting and uses the host system's swap limit. Centos 6 obeys the limit set by proxmox. Both are installed from default templates inside proxmox. Weird.

I recently reinstalled my Proxmox 4.1 servers with Proxmox 4.4. I recreated the CTs with identical configuration and software. I've noticed a huge increase in swap usage. One of my servers actually crashed because it ran out of swap. Here is a graph from one server that is still alive: You...

Not much. Problem still there. root@pve:~# free -mh total used free shared buffers cached Mem: 31G 31G 228M 52M 114M 17G -/+ buffers/cache: 14G 17G Swap: 8.0G 15M 8.0G root@pve:~#...

Just rebooted into 4.4.40-1 and looks like I'm hitting the same error: root@pve:~# free -mh total used free shared buffers cached Mem: 31G 30G 896M 52M 93M 16G -/+ buffers/cache: 13G 17G Swap...

4.4.35-1 (that comes in the latest install package) but I am now doing a dist-upgrade to 4.4.40-1 through the pve-no-subscription repo.

Here is someone having the same issue in Ubuntu and simply went for a kernel upgrade: http://superuser.com/questions/793192/invisible-memory-leak-on-linux-ubuntu-server-not-disk-cache-buffers

Here is my top: root@pve:/run# top -d1 top - 02:15:02 up 3 days, 21:24, 2 users, load average: 0.24, 0.15, 0.11 Tasks: 378 total, 1 running, 377 sleeping, 0 stopped, 0 zombie %Cpu(s): 2.1 us, 4.2 sy, 0.0 ni, 92.2 id, 0.9 wa, 0.0 hi, 0.6 si, 0.0 st KiB Mem: 32946120 total...