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CVE-2022-1966 Aaron Adams discovered a use-after-free in Netfilter which may result in local privilege escalation to root. https://www.heise.de/news/Fehler-in-Linux-Kernel-ermoeglicht-Rechteausweitung-7134791.html Are there any recommendations for securing Poroxmox servers running LXC...

Finally I found the bug. I had to remove a leftover upstart-script from our openvz environment before the migration to proxmox.

Today I upgraded our Proxmox Cluster to version 5.2. After rebooting the Server, all Ubuntu 14.04 CTs couldn't finish their init process. PID USER PRI NI VIRT RES SHR S CPU% MEM% TIME+ Command 1 root 20 0 3820 3092 2696 S 0.0 0.1 0:00.02 /sbin/init 49 root...

running over 100 cts on each node! performance stays quite good!

just an update: rebooted into the newest kernel and the performance seems to be way better.

the CTs are LAMP stacks, every CT has its own Apache & MySQL server, every CT can use the CPU-cores which are available (No CPU restrictions). utilization per node (currently 70 CTs are running per node): CPU utilization: ~1%, Load: ~0.5 Memory utilization: 45% Netin/Netout: < 2 Mb/s...

you are right, we were running the OpenVZ VEs on a FC-LUN. right now I'm migrating the CTs from the CEPH-storage to the old FC-LUN. but it seems the performance is getting worse...

Hi, we were running 200 CTs (LAMP Stacks) on a Proxmox Cluster of two nodes with 24 cores & 64GB RAM each. as we deployed around 80 or 90 CTs on each node, the load of the Cluster nodes starts to increase unproportional and the performance of the CTs was getting very poor. with 100 CTs on...