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  1. U

    Backing up a mail server

    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...
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    [SOLVED] /dev/.lxc-boot-id

    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!
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    Support request: Container disk usage differences

    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...
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    Shrinking XP disks

    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...
  5. U

    Running fstrim on guests

    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...
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    Determining when a guest was stopped

    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...
  7. U

    Support request: authkey rotation?

    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...
  8. U

    Support Request: Failed at step NAMESPACE spawning

    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...
  9. U

    No ping with rp_filter (reverse path filter) = 1

    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...
  10. U

    False needrestart trigger

    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...
  11. U

    Containers fail to restart

    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?
  12. U

    /etc/pve/priv/authorized_keys date stamp

    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...
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    [SOLVED] Valid subscription is now invalid

    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...
  14. U

    Web browser interface idle timeout

    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. :)
  15. U

    Proxmox Logs

    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. :)
  16. U

    System Hang at 'Reached target Reboot'

    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...
  17. U

    CentOS 6 and /fastboot

    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...
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    [SOLVED] Subscription system not updating

    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...
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    Private Proxmox IP, Public Guest IPs

    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. :)
  20. U

    [SOLVED] Understanding Subscription Updates

    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...

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