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thanks @mmenaz for reply. about not starting - my bad - had to change the boot order to start installing the OS. about random VMs crash - still the same KVM: entry failed, hardware error 0x5 in logs. https://forum.proxmox.com/threads/vm-ubuntu-server-random-running-issues.81483/#post-360650...

during 20 min. just OS(ubuntu) on VM's. No actions taken. just looking into the logs.

root@orion:~# cat /etc/network/interfaces auto lo iface lo inet loopback iface eno1 inet manual auto vmbr0 iface vmbr0 inet static address 192.168.1.100/24 gateway 192.168.1.1 bridge_ports eno1 bridge_stp off bridge_fd 0 iface eno2 inet manual...

executed qm start 100 from the logs: Jan 07 10:24:00 orion systemd[1]: Started Proxmox VE replication runner. Jan 07 10:24:35 orion qm[8259]: <root@pam> starting task UPID:orion:00002044:003C1C8F:5FF727B3:qmstart:100:root@pam: Jan 07 10:24:35 orion qm[8260]: start VM 100...

Hello guys, Im getting this when I start the VM: Jan 07 09:54:00 orion systemd-udevd[1929]: Using default interface naming scheme 'v240'. Jan 07 09:54:00 orion systemd-udevd[1929]: link_config: autonegotiation is unset or enabled, the speed and duplex are not writable. Jan 07 09:54:00 orion...

thanks guys for all the ideas. Special thanks @tburger for https://forum.proxmox.com/threads/cpu-cores-and-threads.65923/ was fallowing the recommendations from Option 1 the same issue, very disappointed.

Thanks @tburger

thanks @tburger for the details, very helpful. If you don't mind, lets simulate a situation. Examples are very useful . 1 socket, 14 pCPU(28 vCPU) - 2.40 GHz. Requirements: build a kubernetes cluster. lets say 3 master nodes and 4 workers. a worker node will have, lets say a max of 20...

hi @tburger Guest

one more question @tburger please about the same: statements: 1vCPU = 1 Core Stick with the physical cores you have(physical count cores - not hyper-threading) the CPU sum of all running VMs should be <= number of physical cores? is that right?

Another interesting situation: I have 4 VMs(Ubuntu) a(1cpu), b(1cpu), c(2cpu), d(2cpu) - all good. Ive create VM nr. 5 - e - 8CPU. got Internal error for VM d and e. KVM: entry failed, hardware error 0x5

good to know @tburger, thanks! any good practice recommendations - please share it here please. Any idea's why Im getting this fail after executing virt-host-validate? (if I understand correctly, all the lines should be pass)

Thanks for reply. Not sure if this is the root cause or not... Now I create VM's allocating 1-2 cores(ONLY).. before I was adding 28(max I have) I hare 3 VMs green. installing 4th VM. was running virt-host-validate and getting this:

root@orion:~# cat /sys/module/kvm_intel/parameters/nested N root@orion:~# had it enabled before. now Im getting straight only KVM: entry failed, hardware error 0x5

thanks for reply. added deb http://security.debian.org/ buster/updates main contrib non-free deb-src http://security.debian.org/ buster/updates main contrib non-free deb http://deb.debian.org/debian buster main contrib non-free deb-src http://deb.debian.org/debian buster main contrib...

thanks for reply Mira. Looks like I have the latest microcode packages. root@orion:~# dmesg | grep microcode [ 1.907325] microcode: sig=0x406f1, pf=0x1, revision=0xb000038 [ 1.908139] microcode: Microcode Update Driver: v2.2. root@orion:~# apt install intel-microcode Reading package...

Yeah, https://www.supermicro.com/Bios/softfiles/10741/X10SRi-F_BIOS_3_2_release_notes.pdf # dmidecode 3.2 Getting SMBIOS data from sysfs. SMBIOS 3.0 present. 70 structures occupying 3499 bytes. Table at 0x000EC9B0. Handle 0x0000, DMI type 0, 24 bytes BIOS Information Vendor: American...

root@orion:~# cat /proc/cpuinfo processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 79 model name : Intel(R) Xeon(R) CPU E5-2680 v4 @ 2.40GHz stepping : 1 microcode : 0xb000038 cpu MHz : 2287.992 cache size : 35840 KB physical...

Thanks for reply. Do I need to run another command? Please let me know. root@orion:~# dmidecode --type processor # dmidecode 3.2 Getting SMBIOS data from sysfs. SMBIOS 3.0 present. Handle 0x003E, DMI type 4, 42 bytes Processor Information Socket Designation: CPU1 Type: Central...

thanks for reply. Just tried CentOS, the same issue: Jan 03 15:38:23 orion QEMU[14332]: KVM: entry failed, hardware error 0x5 Jan 03 15:38:23 orion kernel: set kvm_intel.dump_invalid_vmcs=1 to dump internal KVM state. Jan 03 15:38:23 orion QEMU[14332]: RAX=ffffffffa3ad62d0 RBX=0000000000000004...