Strange Networking Issues

boethius

Renowned Member
Feb 11, 2016
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Hi,
I was having some strange behavior with a CentOS guest. I used Proxmox 'monitor' pane in GUI to issue a memorydump for that guest. I forget the error message, but it was given twice, as well as any other monitor command that I attempted always ended with timeout.

Today, I am trying to transfer a specific file from a bare-metal machine on same network directly to the proxmox host. I SSH into the Host and to my surprise I see 2 memory dumps, so the commands I had issued had actually been received. I reboot the machine I SSH'd into the Proxmox host with to finalize the installation of Linux for Windows subsystem. I then SSH into proxmox again, this time from Linux Subsystem, and see this:


Code:
boe@NG44:~$ ssh 10.44.35.4 -l root
The authenticity of host '10.44.35.4 (10.44.35.4)' can't be established.
ED25519 key fingerprint is SHA256:iHimHkAIcX952DSXUQDEff43sDW0LMjaDTUepcbDo.
This key is not known by any other names
Are you sure you want to continue connecting (yes/no/[fingerprint])? yes
Warning: Permanently added '10.44.35.4' (ED25519) to the list of known hosts.
root@10.44.35.4's password:
Linux pve 5.4.195-1-pve #1 SMP PVE 5.4.195-1 (Wed, 13 Jul 2022 13:19:46 +0200) x86_64

The programs included with the Debian GNU/Linux system are free software;
the exact distribution terms for each program are described in the
individual files in /usr/share/doc/*/copyright.

Debian GNU/Linux comes with ABSOLUTELY NO WARRANTY, to the extent
permitted by applicable law.
Last login: Sat Jan  7 14:07:02 2023 from 10.44.44.174
sdfhjkasdfklj'
^C^C^C
It took an unusually long time to accept the password, but then it never drops the prompt and seems to be hung. I then try again with Putty, same as minutes before, and the same thing happens. I then try to access via webgui, and within Chrome, it never loads. Just shows a blank page. No error message. I try to access webgui via Firefox, and it shows a RST.
What is going on?
 
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Ok, I've made some inroads here...


My root storage for the proxmox host is a pair of 16GB SataDOM's in a ZFS mirror.


to my surprise I see 2 memory dumps
These 2 memory dumps were 8GB each.
I don't understand how they were stored in the root directory, but I've observed the same phenomenon with pfSense having some 108% of storage consumed by a PCAP I forgot to limit by packet count.
I was able to delete those 2 memory dumps and SSH access has returned to normal, but I am getting the error invalid pve ticket when trying to access via Chrome. I get connection RST's when trying to access via firefox.
I saw someone recommend deleting the authkey.pub file, I tried and received:
Code:
root@pve:/var/log# rm /etc/pve/authkey.pub
rm: cannot remove '/etc/pve/authkey.pub': Input/output error
 
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