Proxmox restarts randomly

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Dec 10, 2023
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Hello does anyone knows why my Proxmox server restarts randomly. I have no idea on how to troubleshoot this issue.
This is from the syslog prior to the reboot. Any help would be much much appreciated.

Code:
Dec 11 17:21:03 proxmox spiceproxy[1069]: worker 1070 started
Dec 11 17:21:03 proxmox systemd[1]: Started spiceproxy.service - PVE SPICE Proxy Server.
Dec 11 17:21:03 proxmox pve-ha-lrm[1071]: starting server
Dec 11 17:21:03 proxmox pve-ha-lrm[1071]: status change startup => wait_for_agent_lock
Dec 11 17:21:03 proxmox systemd[1]: Started pve-ha-lrm.service - PVE Local HA Resource Manager Daemon.
Dec 11 17:21:03 proxmox systemd[1]: Starting pve-guests.service - PVE guests...
Dec 11 17:21:04 proxmox pve-guests[1073]: <root@pam> starting task UPID:proxmox:00000432:0000041C:6576D480:startall::root@pam:
Dec 11 17:21:04 proxmox pvesh[1073]: Starting VM 100
Dec 11 17:21:04 proxmox pve-guests[1074]: <root@pam> starting task UPID:proxmox:00000433:0000041D:6576D480:qmstart:100:root@pam:
Dec 11 17:21:04 proxmox pve-guests[1075]: start VM 100: UPID:proxmox:00000433:0000041D:6576D480:qmstart:100:root@pam:
Dec 11 17:21:04 proxmox systemd[1]: systemd-rfkill.service: Deactivated successfully.
Dec 11 17:21:04 proxmox kernel: kvm[1076]: memfd_create() called without MFD_EXEC or MFD_NOEXEC_SEAL set
Dec 11 17:21:04 proxmox systemd[1]: Created slice qemu.slice - Slice /qemu.
Dec 11 17:21:04 proxmox systemd[1]: Started 100.scope.
Dec 11 17:21:05 proxmox kernel: tap100i0: entered promiscuous mode
Dec 11 17:21:05 proxmox kernel: vmbr0: port 2(fwpr100p0) entered blocking state
Dec 11 17:21:05 proxmox kernel: vmbr0: port 2(fwpr100p0) entered disabled state
Dec 11 17:21:05 proxmox kernel: fwpr100p0: entered allmulticast mode
Dec 11 17:21:05 proxmox kernel: fwpr100p0: entered promiscuous mode
Dec 11 17:21:05 proxmox kernel: vmbr0: port 2(fwpr100p0) entered blocking state
Dec 11 17:21:05 proxmox kernel: vmbr0: port 2(fwpr100p0) entered forwarding state
Dec 11 17:21:05 proxmox kernel: fwbr100i0: port 1(fwln100i0) entered blocking state
Dec 11 17:21:05 proxmox kernel: fwbr100i0: port 1(fwln100i0) entered disabled state
Dec 11 17:21:05 proxmox kernel: fwln100i0: entered allmulticast mode
Dec 11 17:21:05 proxmox kernel: fwln100i0: entered promiscuous mode
Dec 11 17:21:05 proxmox kernel: fwbr100i0: port 1(fwln100i0) entered blocking state
Dec 11 17:21:05 proxmox kernel: fwbr100i0: port 1(fwln100i0) entered forwarding state
Dec 11 17:21:05 proxmox kernel: fwbr100i0: port 2(tap100i0) entered blocking state
Dec 11 17:21:05 proxmox kernel: fwbr100i0: port 2(tap100i0) entered disabled state
Dec 11 17:21:05 proxmox kernel: tap100i0: entered allmulticast mode
Dec 11 17:21:05 proxmox kernel: fwbr100i0: port 2(tap100i0) entered blocking state
Dec 11 17:21:05 proxmox kernel: fwbr100i0: port 2(tap100i0) entered forwarding state
Dec 11 17:21:05 proxmox kernel: cp210x ttyUSB0: cp210x converter now disconnected from ttyUSB0
Dec 11 17:21:05 proxmox kernel: cp210x 3-1:1.0: device disconnected
Dec 11 17:21:08 proxmox pve-guests[1073]: <root@pam> end task UPID:proxmox:00000432:0000041C:6576D480:startall::root@pam: OK
Dec 11 17:21:08 proxmox systemd[1]: Finished pve-guests.service - PVE guests.
Dec 11 17:21:08 proxmox systemd[1]: Starting pvescheduler.service - Proxmox VE scheduler...
Dec 11 17:21:09 proxmox pvescheduler[1178]: starting server
Dec 11 17:21:09 proxmox systemd[1]: Started pvescheduler.service - Proxmox VE scheduler.
Dec 11 17:21:09 proxmox systemd[1]: Reached target multi-user.target - Multi-User System.
Dec 11 17:21:09 proxmox systemd[1]: Reached target graphical.target - Graphical Interface.
Dec 11 17:21:09 proxmox systemd[1]: Starting systemd-update-utmp-runlevel.service - Record Runlevel Change in UTMP...
Dec 11 17:21:09 proxmox systemd[1]: systemd-update-utmp-runlevel.service: Deactivated successfully.
Dec 11 17:21:09 proxmox systemd[1]: Finished systemd-update-utmp-runlevel.service - Record Runlevel Change in UTMP.
Dec 11 17:21:09 proxmox systemd[1]: Startup finished in 12.901s (firmware) + 5.251s (loader) + 4.154s (kernel) + 10.921s (userspace) = 33.228s.
Dec 11 17:21:10 proxmox chronyd[859]: Selected source 106.10.186.201 (2.debian.pool.ntp.org)
Dec 11 17:21:10 proxmox chronyd[859]: System clock TAI offset set to 37 seconds
Dec 11 17:21:11 proxmox kernel: usb 3-1: reset full-speed USB device number 2 using xhci_hcd
Dec 11 17:21:28 proxmox systemd[1]: systemd-fsckd.service: Deactivated successfully.
Dec 11 17:22:17 proxmox chronyd[859]: Selected source 137.184.250.82 (2.debian.pool.ntp.org)
Dec 11 17:26:35 proxmox chronyd[859]: Selected source 106.10.186.201 (2.debian.pool.ntp.org)
Dec 11 17:36:36 proxmox systemd[1]: Starting systemd-tmpfiles-clean.service - Cleanup of Temporary Directories...
Dec 11 17:36:36 proxmox systemd[1]: systemd-tmpfiles-clean.service: Deactivated successfully.
Dec 11 17:36:36 proxmox systemd[1]: Finished systemd-tmpfiles-clean.service - Cleanup of Temporary Directories.
Dec 11 17:36:36 proxmox systemd[1]: run-credentials-systemd\x2dtmpfiles\x2dclean.service.mount: Deactivated successfully.
-- Reboot --
Dec 11 18:00:55 proxmox kernel: Linux version 6.5.11-7-pve (build@proxmox) (gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40) #1 SMP PREEMPT_DYNAMIC PMX 6.5.11-7 (2023-12-05T09:44Z) ()
Dec 11 18:00:55 proxmox kernel: Command line: BOOT_IMAGE=/boot/vmlinuz-6.5.11-7-pve root=/dev/mapper/pve-root ro quiet
Dec 11 18:00:55 proxmox kernel: KERNEL supported cpus:
Dec 11 18:00:55 proxmox kernel:   Intel GenuineIntel
Dec 11 18:00:55 proxmox kernel:   AMD AuthenticAMD
Dec 11 18:00:55 proxmox kernel:   Hygon HygonGenuine
Dec 11 18:00:55 proxmox kernel:   Centaur CentaurHauls
Dec 11 18:00:55 proxmox kernel:   zhaoxin   Shanghai 
Dec 11 18:00:55 proxmox kernel: BIOS-provided physical RAM map:
Dec 11 18:00:55 proxmox kernel: BIOS-e820: [mem 0x0000000000000000-0x000000000009ffff] usable
Dec 11 18:00:55 proxmox kernel: BIOS-e820: [mem 0x00000000000a0000-0x00000000000fffff] reserved
Dec 11 18:00:55 proxmox kernel: BIOS-e820: [mem 0x0000000000100000-0x0000000009e01fff] usable
Dec 11 18:00:55 proxmox kernel: BIOS-e820: [mem 0x0000000009e02000-0x0000000009ffffff] reserved
Dec 11 18:00:55 proxmox kernel: BIOS-e820: [mem 0x000000000a000000-0x000000000a1fffff] usable
Dec 11 18:00:55 proxmox kernel: BIOS-e820: [mem 0x000000000a200000-0x000000000a20dfff] ACPI NVS
Dec 11 18:00:55 proxmox kernel: BIOS-e820: [mem 0x000000000a20e000-0x000000000affffff] usable
Dec 11 18:00:55 proxmox kernel: BIOS-e820: [mem 0x000000000b000000-0x000000000b01ffff] reserved
Dec 11 18:00:55 proxmox kernel: BIOS-e820: [mem 0x000000000b020000-0x00000000db117fff] usable
Dec 11 18:00:55 proxmox kernel: BIOS-e820: [mem 0x00000000db118000-0x00000000db497fff] reserved
Dec 11 18:00:55 proxmox kernel: BIOS-e820: [mem 0x00000000db498000-0x00000000db4fbfff] ACPI data
Dec 11 18:00:55 proxmox kernel: BIOS-e820: [mem 0x00000000db4fc000-0x00000000dcbfafff] ACPI NVS
Dec 11 18:00:55 proxmox kernel: BIOS-e820: [mem 0x00000000dcbfb000-0x00000000ddb4afff] reserved
Dec 11 18:00:55 proxmox kernel: BIOS-e820: [mem 0x00000000ddb4b000-0x00000000ddbfefff] type 20
Dec 11 18:00:55 proxmox kernel: BIOS-e820: [mem 0x00000000ddbff000-0x00000000deffffff] usable
Dec 11 18:00:55 proxmox kernel: BIOS-e820: [mem 0x00000000df000000-0x00000000dfffffff] reserved
Dec 11 18:00:55 proxmox kernel: BIOS-e820: [mem 0x00000000f0000000-0x00000000f7ffffff] reserved
Dec 11 18:00:55 proxmox kernel: BIOS-e820: [mem 0x00000000fd200000-0x00000000fd2fffff] reserved
Dec 11 18:00:55 proxmox kernel: BIOS-e820: [mem 0x00000000fd600000-0x00000000fd7fffff] reserved
Dec 11 18:00:55 proxmox kernel: BIOS-e820: [mem 0x00000000fea00000-0x00000000fea0ffff] reserved
Dec 11 18:00:55 proxmox kernel: BIOS-e820: [mem 0x00000000feb80000-0x00000000fec01fff] reserved
Dec 11 18:00:55 proxmox kernel: BIOS-e820: [mem 0x00000000fec10000-0x00000000fec10fff] reserved
Dec 11 18:00:55 proxmox kernel: BIOS-e820: [mem 0x00000000fec30000-0x00000000fec30fff] reserved
Dec 11 18:00:55 proxmox kernel: BIOS-e820: [mem 0x00000000fed00000-0x00000000fed00fff] reserved
Dec 11 18:00:55 proxmox kernel: BIOS-e820: [mem 0x00000000fed40000-0x00000000fed44fff] reserved
Dec 11 18:00:55 proxmox kernel: BIOS-e820: [mem 0x00000000fed80000-0x00000000fed8ffff] reserved
Dec 11 18:00:55 proxmox kernel: BIOS-e820: [mem 0x00000000fedc2000-0x00000000fedcffff] reserved
Dec 11 18:00:55 proxmox kernel: BIOS-e820: [mem 0x00000000fedd4000-0x00000000fedd5fff] reserved
Dec 11 18:00:55 proxmox kernel: BIOS-e820: [mem 0x00000000ff000000-0x00000000ffffffff] reserved
Dec 11 18:00:55 proxmox kernel: BIOS-e820: [mem 0x0000000100000000-0x000000041f37ffff] usable
Dec 11 18:00:55 proxmox kernel: BIOS-e820: [mem 0x000000041f380000-0x000000041fffffff] reserved
Dec 11 18:00:55 proxmox kernel: NX (Execute Disable) protection: active
 
Hello, singlenode or cluster? If cluster please post:
  • cat /etc/pve/corosync.conf
  • cat /etc/hosts
  • cat /etc/network/interfaces
And also post.
  • journalctl | grep corosync
 
Last edited:
Hello, singlenode or cluster? If cluster please post:
  • cat /etc/pve/corosync.conf
  • cat /etc/hosts
  • cat /etc/network/interfaces
And also post.
  • journalctl | grep corosync
singlenode sir. I did a "journalctl | grep corosync" and this is the result


Code:
root@proxmox:~# journalctl | grep corosync
Dec 01 00:33:24 proxmox systemd[1]: corosync.service - Corosync Cluster Engine was skipped because of an unmet condition check (ConditionPathExists=/etc/corosync/corosync.conf).
Dec 01 03:14:30 proxmox systemd[1]: corosync.service - Corosync Cluster Engine was skipped because of an unmet condition check (ConditionPathExists=/etc/corosync/corosync.conf).
Dec 01 05:55:14 proxmox systemd[1]: corosync.service - Corosync Cluster Engine was skipped because of an unmet condition check (ConditionPathExists=/etc/corosync/corosync.conf).
Dec 01 06:41:21 proxmox systemd[1]: corosync.service - Corosync Cluster Engine was skipped because of an unmet condition check (ConditionPathExists=/etc/corosync/corosync.conf).
Dec 01 06:47:29 proxmox systemd[1]: corosync.service - Corosync Cluster Engine was skipped because of an unmet condition check (ConditionPathExists=/etc/corosync/corosync.conf).
Dec 01 13:51:02 proxmox systemd[1]: corosync.service - Corosync Cluster Engine was skipped because of an unmet condition check (ConditionPathExists=/etc/corosync/corosync.conf).
Dec 01 17:56:49 proxmox systemd[1]: corosync.service - Corosync Cluster Engine was skipped because of an unmet condition check (ConditionPathExists=/etc/corosync/corosync.conf).
Dec 02 04:32:25 proxmox systemd[1]: corosync.service - Corosync Cluster Engine was skipped because of an unmet condition check (ConditionPathExists=/etc/corosync/corosync.conf).
Dec 02 06:06:09 proxmox systemd[1]: corosync.service - Corosync Cluster Engine was skipped because of an unmet condition check (ConditionPathExists=/etc/corosync/corosync.conf).
Dec 02 06:06:55 proxmox systemd[1]: corosync.service - Corosync Cluster Engine was skipped because of an unmet condition check (ConditionPathExists=/etc/corosync/corosync.conf).
Dec 02 07:47:56 proxmox systemd[1]: corosync.service - Corosync Cluster Engine was skipped because of an unmet condition check (ConditionPathExists=/etc/corosync/corosync.conf).
Dec 02 13:12:15 proxmox systemd[1]: corosync.service - Corosync Cluster Engine was skipped because of an unmet condition check (ConditionPathExists=/etc/corosync/corosync.conf).
Dec 02 13:50:01 proxmox systemd[1]: corosync.service - Corosync Cluster Engine was skipped because of an unmet condition check (ConditionPathExists=/etc/corosync/corosync.conf).
Dec 02 19:25:32 proxmox systemd[1]: corosync.service - Corosync Cluster Engine was skipped because of an unmet condition check (ConditionPathExists=/etc/corosync/corosync.conf).
Dec 03 09:18:20 proxmox systemd[1]: corosync.service - Corosync Cluster Engine was skipped because of an unmet condition check (ConditionPathExists=/etc/corosync/corosync.conf).
Dec 03 10:18:53 proxmox systemd[1]: corosync.service - Corosync Cluster Engine was skipped because of an unmet condition check (ConditionPathExists=/etc/corosync/corosync.conf).
Dec 03 12:24:41 proxmox systemd[1]: corosync.service - Corosync Cluster Engine was skipped because of an unmet condition check (ConditionPathExists=/etc/corosync/corosync.conf).
Dec 04 01:38:36 proxmox systemd[1]: corosync.service - Corosync Cluster Engine was skipped because of an unmet condition check (ConditionPathExists=/etc/corosync/corosync.conf).
Dec 04 11:38:30 proxmox systemd[1]: corosync.service - Corosync Cluster Engine was skipped because of an unmet condition check (ConditionPathExists=/etc/corosync/corosync.conf).
Dec 04 12:07:47 proxmox systemd[1]: corosync.service - Corosync Cluster Engine was skipped because of an unmet condition check (ConditionPathExists=/etc/corosync/corosync.conf).
Dec 04 21:37:00 proxmox systemd[1]: corosync.service - Corosync Cluster Engine was skipped because of an unmet condition check (ConditionPathExists=/etc/corosync/corosync.conf).
Dec 04 22:55:46 proxmox systemd[1]: corosync.service - Corosync Cluster Engine was skipped because of an unmet condition check (ConditionPathExists=/etc/corosync/corosync.conf).
Dec 05 05:40:35 proxmox systemd[1]: corosync.service - Corosync Cluster Engine was skipped because of an unmet condition check (ConditionPathExists=/etc/corosync/corosync.conf).
Dec 05 17:35:34 proxmox systemd[1]: corosync.service - Corosync Cluster Engine was skipped because of an unmet condition check (ConditionPathExists=/etc/corosync/corosync.conf).
Dec 05 21:05:50 proxmox systemd[1]: corosync.service - Corosync Cluster Engine was skipped because of an unmet condition check (ConditionPathExists=/etc/corosync/corosync.conf).
Dec 06 03:39:36 proxmox systemd[1]: corosync.service - Corosync Cluster Engine was skipped because of an unmet condition check (ConditionPathExists=/etc/corosync/corosync.conf).
Dec 06 06:53:33 proxmox systemd[1]: corosync.service - Corosync Cluster Engine was skipped because of an unmet condition check (ConditionPathExists=/etc/corosync/corosync.conf).
Dec 06 09:59:46 proxmox systemd[1]: corosync.service - Corosync Cluster Engine was skipped because of an unmet condition check (ConditionPathExists=/etc/corosync/corosync.conf).
Dec 06 11:19:43 proxmox systemd[1]: corosync.service - Corosync Cluster Engine was skipped because of an unmet condition check (ConditionPathExists=/etc/corosync/corosync.conf).
Dec 06 13:48:50 proxmox systemd[1]: corosync.service - Corosync Cluster Engine was skipped because of an unmet condition check (ConditionPathExists=/etc/corosync/corosync.conf).
Dec 06 21:33:40 proxmox systemd[1]: corosync.service - Corosync Cluster Engine was skipped because of an unmet condition check (ConditionPathExists=/etc/corosync/corosync.conf).
Dec 07 02:29:08 proxmox systemd[1]: corosync.service - Corosync Cluster Engine was skipped because of an unmet condition check (ConditionPathExists=/etc/corosync/corosync.conf).
Dec 07 08:35:25 proxmox systemd[1]: corosync.service - Corosync Cluster Engine was skipped because of an unmet condition check (ConditionPathExists=/etc/corosync/corosync.conf).
Dec 07 10:36:50 proxmox systemd[1]: corosync.service - Corosync Cluster Engine was skipped because of an unmet condition check (ConditionPathExists=/etc/corosync/corosync.conf).
Dec 07 21:51:35 proxmox systemd[1]: corosync.service - Corosync Cluster Engine was skipped because of an unmet condition check (ConditionPathExists=/etc/corosync/corosync.conf).
Dec 08 03:45:34 proxmox systemd[1]: corosync.service - Corosync Cluster Engine was skipped because of an unmet condition check (ConditionPathExists=/etc/corosync/corosync.conf).
Dec 08 04:42:50 proxmox systemd[1]: corosync.service - Corosync Cluster Engine was skipped because of an unmet condition check (ConditionPathExists=/etc/corosync/corosync.conf).
Dec 08 04:43:33 proxmox systemd[1]: corosync.service - Corosync Cluster Engine was skipped because of an unmet condition check (ConditionPathExists=/etc/corosync/corosync.conf).
Dec 08 09:40:41 proxmox systemd[1]: corosync.service - Corosync Cluster Engine was skipped because of an unmet condition check (ConditionPathExists=/etc/corosync/corosync.conf).
Dec 08 12:55:08 proxmox systemd[1]: corosync.service - Corosync Cluster Engine was skipped because of an unmet condition check (ConditionPathExists=/etc/corosync/corosync.conf).
Dec 08 15:07:45 proxmox systemd[1]: corosync.service - Corosync Cluster Engine was skipped because of an unmet condition check (ConditionPathExists=/etc/corosync/corosync.conf).
Dec 08 19:51:36 proxmox systemd[1]: corosync.service - Corosync Cluster Engine was skipped because of an unmet condition check (ConditionPathExists=/etc/corosync/corosync.conf).
Dec 08 22:52:10 proxmox systemd[1]: corosync.service - Corosync Cluster Engine was skipped because of an unmet condition check (ConditionPathExists=/etc/corosync/corosync.conf).
Dec 09 13:11:01 proxmox systemd[1]: corosync.service - Corosync Cluster Engine was skipped because of an unmet condition check (ConditionPathExists=/etc/corosync/corosync.conf).
Dec 09 16:28:59 proxmox systemd[1]: corosync.service - Corosync Cluster Engine was skipped because of an unmet condition check (ConditionPathExists=/etc/corosync/corosync.conf).
Dec 09 23:02:49 proxmox systemd[1]: corosync.service - Corosync Cluster Engine was skipped because of an unmet condition check (ConditionPathExists=/etc/corosync/corosync.conf).
Dec 10 00:11:07 proxmox systemd[1]: corosync.service - Corosync Cluster Engine was skipped because of an unmet condition check (ConditionPathExists=/etc/corosync/corosync.conf).
Dec 10 01:09:33 proxmox systemd[1]: corosync.service - Corosync Cluster Engine was skipped because of an unmet condition check (ConditionPathExists=/etc/corosync/corosync.conf).
Dec 10 01:49:30 proxmox systemd[1]: corosync.service - Corosync Cluster Engine was skipped because of an unmet condition check (ConditionPathExists=/etc/corosync/corosync.conf).
Dec 10 02:34:17 proxmox systemd[1]: corosync.service - Corosync Cluster Engine was skipped because of an unmet condition check (ConditionPathExists=/etc/corosync/corosync.conf).
Dec 10 06:40:56 proxmox systemd[1]: corosync.service - Corosync Cluster Engine was skipped because of an unmet condition check (ConditionPathExists=/etc/corosync/corosync.conf).
Dec 10 07:51:27 proxmox systemd[1]: corosync.service - Corosync Cluster Engine was skipped because of an unmet condition check (ConditionPathExists=/etc/corosync/corosync.conf).
Dec 10 09:02:44 proxmox systemd[1]: corosync.service - Corosync Cluster Engine was skipped because of an unmet condition check (ConditionPathExists=/etc/corosync/corosync.conf).
Dec 10 16:14:34 proxmox systemd[1]: corosync.service - Corosync Cluster Engine was skipped because of an unmet condition check (ConditionPathExists=/etc/corosync/corosync.conf).
Dec 10 16:16:36 proxmox systemd[1]: corosync.service - Corosync Cluster Engine was skipped because of an unmet condition check (ConditionPathExists=/etc/corosync/corosync.conf).
Dec 10 16:25:17 proxmox systemd[1]: corosync.service - Corosync Cluster Engine was skipped because of an unmet condition check (ConditionPathExists=/etc/corosync/corosync.conf).
Dec 10 16:54:26 proxmox systemd[1]: corosync.service - Corosync Cluster Engine was skipped because of an unmet condition check (ConditionPathExists=/etc/corosync/corosync.conf).
Dec 10 17:08:05 proxmox systemd[1]: corosync.service - Corosync Cluster Engine was skipped because of an unmet condition check (ConditionPathExists=/etc/corosync/corosync.conf).
Dec 10 17:12:35 proxmox systemd[1]: corosync.service - Corosync Cluster Engine was skipped because of an unmet condition check (ConditionPathExists=/etc/corosync/corosync.conf).
Dec 10 18:36:13 proxmox systemd[1]: corosync.service - Corosync Cluster Engine was skipped because of an unmet condition check (ConditionPathExists=/etc/corosync/corosync.conf).
Dec 10 18:54:29 proxmox systemd[1]: corosync.service - Corosync Cluster Engine was skipped because of an unmet condition check (ConditionPathExists=/etc/corosync/corosync.conf).
Dec 11 02:26:57 proxmox systemd[1]: corosync.service - Corosync Cluster Engine was skipped because of an unmet condition check (ConditionPathExists=/etc/corosync/corosync.conf).
Dec 11 03:55:54 proxmox systemd[1]: corosync.service - Corosync Cluster Engine was skipped because of an unmet condition check (ConditionPathExists=/etc/corosync/corosync.conf).
Dec 11 12:09:53 proxmox systemd[1]: corosync.service - Corosync Cluster Engine was skipped because of an unmet condition check (ConditionPathExists=/etc/corosync/corosync.conf).
Dec 11 17:21:01 proxmox systemd[1]: corosync.service - Corosync Cluster Engine was skipped because of an unmet condition check (ConditionPathExists=/etc/corosync/corosync.conf).
Dec 11 18:00:58 proxmox systemd[1]: corosync.service - Corosync Cluster Engine was skipped because of an unmet condition check (ConditionPathExists=/etc/corosync/corosync.conf).
root@proxmox:~#
 
If its a singlehost its very likely that you have broken hardware. The checks from my post are for clusters

"If cluster please post"
Check ipmi or bmc eventlog, do a memtest, or try to use stress-tool to see if you can reproduce the failure. If yes, something in your hardware is broken, most likely memory.