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How does the new Proxmox Backup Server (PBS) scale? I have one specific use case in mind: a CentOS 7 LXC container mail server running Postfix/Dovecot . There is about 300 GB of data at about 3.5 million mostly small files. The volume is continually increasing. I am aware of Dovecot...

With recent updates we are receiving rkhunter reports about /dev/.lxc-boot-id being a hidden file. Easily fixed in rkhunter but which PVE/LXC package is responsible for creating this file? Thanks!

This probably has been asked several times but likely I am using incorrect search terms. I'm trying to understand container disk usage differences. I have a container that shows the following with df: /dev/mapper/pve-vm--301--disk--1 ext4 591G 257G 304G 46% From inside the container the...

What is the exact syntax to shrink an XP virtual disk? I'm looking at shrinking XP KVM disks of unused disk space. There is a wiki topic, but the topic lacks specific information. The example shows: cp image.qcow2 image.qcow2_backup There are no files on the host with a qcow2 file extension...

Is there a preferred or recommended way to run fstrim on both LXC and KVM guests? Should fstrim be run from the host or inside guests? How often? Daily? Just before a vzdump? Do guests need to be shutdown when shrinking virtual disks? Browsing the forum and admin guide left me uncertain. What...

Without parsing through logs, is there a straightforward way using Proxmox command line tools to know when a guest system was stopped? Background: When an LXC or KVM guest is stopped, the vzdump cron jobs continue to create backups. While hardly the end of the world, would be nice to determine...

After upgrading Proxmox 5 to 6, I notice /etc/pve/authkey.pub is modified and rotated to authkey.pub.old, and subsequently, in /etc/pve/priv/ the authkey.key, authorized_keys, and known_hosts files all are changed every 24 hours. Looks this lifetime limit is managed in...

Proxmox 5.4, fully updated. I am prototyping three Debian 10 containers. In two of the systems I see the log spew noted in the thread title. In one system I don't. Poking around the web indicates the solution is PrivateTmp=false. I configured all three systems with that parameter and...

The default sysctl rp_filter configuration is 2 (loose) set in /usr/lib/sysctl.d/pve-firewall.conf. Changing the setting to 1 (strict) in /etc/sysctl.conf results in not being able to ping one Proxmox system. Changing to 1 did not affect other Proxmox systems. Where do I start poking and...

While experience with package management and system design is the better foundation for knowing when to reboot a system, we use the needrestart tool as an additional guide and only as a guide. Some time ago I noticed the needrestart tool wants to always restart lxc-monitord.service and...

With the recent Debian packages updates, we experienced containers failing to restart. We've seen this before. The solution is mentioned at the end of this thread: find /sys/fs/cgroup/*/lxc/$CTID* -type d -print -delete pct start $CTID Does anybody know why this happens sporadically?

I notice on a reboot, such as a kernel update, the date stamp on /etc/pve/priv/authorized_keys and known_hosts change to the time of the file restoration from the database, which occurs when booting. I understand why this happens, but is there a way to preserve the date stamps? To me this is a...

I hope I am missing the big picture somewhere. We have a valid Community subscription. I verified the subscription by logging in to https://shop.maurer-it.com. Our online account shows the subscription is valid to June 21, 2020. I suspect updates from yesterday, which included...

How do I shorten the idle timeout for the web browser interface? My understanding is the interface is controlled by pveproxy and the default idle timeout is 2 hours. I presume a brute force way to terminate an idle session is manually restart the pveproxy service. Thanks again. :)

I hope I am missing the obvious. I looked through the wiki and admin manual Does Proxmox log configuration changes to guest systems? If so, where? For example, if I change the allocated RAM or CPU cores, does that change show up in any logs? Thanks again. :)

Proxmox 5.4, fully updated, kernel: 4.15.18-12. We do not use OOB or clustering. pveversion output below. We have a Proxmox system that about every other reboot hangs at the "Reached target Reboot" stdout message. Left unattended, on a full-fledged hang the system finally reboots at about 30...

We have a lone (fully updated) CentOS 6 container running on a (fully updated 5.2-9) Proxmox host. Recently the container started creating /fastboot. I cannot find anything in the CentOS system that could be creating this file. The file does not get created on a CentOS 7 container. Is the file...

The past several weeks we have not been receiving updates on our subscription system. This was a non-subscription system if that matters, but updates had been working fine up until sometime in July. I reviewed the wiki at https://pve.proxmox.com/wiki/Package_Repositories. Our...

I am looking for information to configure the Proxmox host with a private IP address, but allow guest systems to have public IPs. My search-fu is not doing well today. :) Let me know if I need to provide additional information. Thanks much. :)

We have a single subscription now for several weeks. I have not seen any updates from the enterprise repo, but have seen some on the non-enterprise repo. Since I have not seen updates with the subscription, I want to verify there actually have not been any updates. I presume the enterprise...