Questions tagged [debian]
Debian is a popular and influential GNU/Linux distribution. Questions here should generally be about Debian Server.
7,666
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Debian & Broadcom: poor performance transferring files via network
I setup a new server running Debian Bullseye with Proxmox-kernel as a NAS to host mainly video content (so in general large files). I noticed an abysmally bad performance transferring files via SMB so ...
- 211
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15
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Debian Server not communicating with anything after network interface change
I have the following situation:
I have changed the network interface type of my Debian server from VMXNET3 to et1000e from VMWARE EXSI and now the server cannot communicate even with other devices on ...
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47
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apt full-upgrade Debian 11 to Debian 12: Errors were encountered while processing: linux-headers-6.1.0-20-amd64
Recently faced with the issue upgrading Debian 10 through Debian 11 to Debian 12
apt full-upgrade
...
Error! The /var/lib/dkms/aufs/4.19+20190211/6.1.0-20-amd64/x86_64/dkms.conf for module aufs ...
- 659
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SSH login fails with "Permission denied" error after upgrading Debian from Bullseye to Bookworm
I am unable to SSH into my Debian server after upgrading from Bullseye to Bookworm. I have tried various troubleshooting steps, but the issue persists.
Error message:
Last login: Wed Apr 10 13:42:16 ...
- 101
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53
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Local WireGuard responing to a SSH TCP SYN to a wrong interface
I have a local WireGuard gateway that I am trying to manage using Ansible. I found an issue when connecting over SSH. That connection was getting timed out. After looking into the problem, I realized ...
- 21
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2
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79
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How do clients select the DNS record from multiple DNS responses?
I have a Virtual Private Server with an IPV4 address and a range of IPV6 addresses, with the option of adding one hundred more IPV6 addresses.
Configuration:
OS:
Debian 11
IPV4:
One public Internet ...
- 103
-1
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40
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How to install Debian 12 on OCI Bare Metal Instance?
I want to install Debian 12 on my OCI Bare Metal Instance. I succeeded in VM, but it didn't work on BM Instance.
I tried OCI Custom Images, Netboot.xyz. The BM Instance couldn't boot with OCI Custom ...
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New install of Docker on Debian constantly crashes when using it via VMware Remote Console
About a month ago I installed the latest version of Docker on Debian 12 on a VMware ESXi 8.0U2 virtual machine (latest vSphere version).
I tried to get VNC running but other priorities took over, so ...
- 218
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39
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Debian 12: Particular VM no longer boots properly
When one of our VMs rebooted yesterday it refused to come back up in a strange way.
An overview of the VM:
Debian 12 on a VMWare ESXi instance.
/dev/sda is a virtual disk with 3 GPT partitions (...
- 154
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20
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How do i stop packet flooding on my server? [duplicate]
I use a debian server to host my site, but i've found about this vulnerability in it that it could receive half the packets in a packet flood with this command,
ping -s <size of packet in bytes> ...
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12
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Proxmox linux bridge has binded ip which not works 50% of time
I have default proxmox install on Vultr baremetal server
It has bridge like this
root@ed2:~# cat /etc/network/interfaces
auto lo
iface lo inet loopback
iface enp1s0 inet manual
auto vmbr0
iface ...
- 708
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94
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How to configure Docker permissions for container to write to a volume as a non-root user?
I have my web application deployed in a couple of Docker containers, and for file uploads I need to be able to write to the filesystem. The application is proxied through Nginx running on the same ...
- 235
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146
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setup NTP debian
I have a local NTP server that is set up with the correct time for our timezone. I also have a Debian computer with an NTP client configured to sync with the local server.
I tried keeping the wrong ...
- 25
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Postfix body hash did not verify / First Hop of headers contains local address
So far my mailserver works, all checks pass with almost highest scores. But one thing I wonder is why I get a DKIM authenticated problem on mxtoolbox, when sending a mail via smtp.
Screenshot 1
...
user1082590
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Can't install the drivers for my nvidia geforce gpu on Debian 12 [migrated]
I'm having trouble installing the drivers for my new rtx 4060ti gpu. Can anyone help me please? Thanks.
Setting up nvidia-kernel-dkms (525.147.05-4~deb12u1) ...
Loading new nvidia-current-525.147.05 ...
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1
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Check if package exists in repository that is not on my sources.list?
TL;DR:
How can I check if a package exists in a repository that's not on my sources.list?
What I want:
Most answers I'm finding assume the repo I need to check is already in my /etc/apt/sources.list.
...
- 623
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1
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47
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cd command not recognized by a systemd service script
Hi run Debian OS and I have a shell script that runs sphinx search.
The script runs fine if I run it from terminal as below:
sh /home/myuser/sphinx/run_sphinx.sh
Here is the content of run_sphinx.sh
#...
- 31
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77
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How would I completely reset network to after-fresh-installation status from Debian installer ISO?
I need to completely reset my Debian VM's network side settings and configuration back to the state of a fresh installation. How can I do that with a Debian installer ISO? I was able to boot into ...
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41
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What to check on what is blocking my open port on Debian?
I would have posted my attempts but I currently do not have access to this Debian VM... (see related question How do I get myself out of docker hijacked network situation on my Debian VM?)
Anyway, the ...
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How do I get myself out of docker hijacked network situation on my Debian VM?
I ran into a problem with wg-easy docker in trying to set up Wireguard using docker on my Debian VM so I changed network_mode to host as a last resort without learning about the consequences... The ...
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71
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Upgrading mysql - can not start server 8.0.35 => 8.0.36
After upgrading mysql the server can not start?
Upgrade
apt update && apt upgrade
8.0.35 => 8.0.36
OS: Debian bookworm
error
Tablespace 123588, name 'sys/sys_config', file './sys/...
- 2,085
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66
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All containers on a server fail to send SMTP requests, the rest works fine
We have a VPS with several services in Docker containers, on top of which, another Docker container runs a Traefik reverse proxy.
Last Monday morning, all the services running on that server failed to ...
- 101
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1
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35
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Why are remote connections to my ssh tunnel refused but local connections are accepted?
Hello I have set up an ssh tunnel as follows:
/usr/bin/ssh -vvv -o ServerAliveInterval=10 -o ServerAliveCountMax=3 -R 15000:127.0.0.1: 15000 -N mylinode.domain.com
...
debug1: Offering public key: /...
- 183
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21
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Virtual host on Apache2 for Mautic "This site can't be reached" on specified subdomain (but can be reached somewhere else)
I am configuring a brand new Mautic 5.0.3 instance on a Debian GNU/Linux 12 (bookworm) in AWS shared server with other 3 webs. Let's say (for security reasons) that its on aaaa.com.
I have configured ...
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1
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51
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Jail-Chrooted OpenVPN Service with Apparmor fails with Operation not permitted
I have an OpenVPN client with chroot-jail currently working as a Linux service openvpn-client@vpn
I am trying to make it work with AppArmor, I created the OpenVPN profile in /etc/apparmor.d/usr.sbin....
- 103
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1
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29
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systemd wait for Env variable from external to trigger service start
I have a VM which I'm controlling the boot up process via systemd and cloud-init.
For cloud-init I have a script that performs initialization as follows:
runcmd:
- /etc/systemd/system/init.sh
/etc/...
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2
answers
108
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Linux server: apt-get update "Could not get lock" error
I have a Google Cloud machine. Every few days, I SSH into the VM and run a handful of commands. Over the past few days, whenever I run sudo apt-get update, I get the following errors:
E: Could not get ...
google-compute-engine
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rsnapshot du shows huge difference in size between two backups, rsnapshot-diff says nothing changed between them
I'm on Debian 12. My backup drive filled up so I'm trying to figure out what is using so much space. Somehow the most recent backup is not hourly.0, it's hourly.20 and from a few days ago ("...
- 101
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119
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Debian server unable to connect to network
My server is unable to connect to the local network or Internet.
The server cannot ping other machines on the local network. Attempts to reach the Internet fail.
From my PC I can ping local IP 192.168....
- 119
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46
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Server works over IP with port but not domain and port
I have plugged CloudFlare to my server and redirected domain to its' nameservers.
The default domain sends the typical "Server Down" website from CloudFlare - which is fine, because I have ...
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49
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Can't run startup script on Debian VM in Google Cloud - SSH and Serial Console Access Issues
I've been struggling for days with a SSH access problem on my Compute Engine VM (Debian GNU/Linux 10), with an error in the sshd_config file leading to the inability to restart the SSH service:
2024-...
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1
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57
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why does apache2.conf grants access to /usr/share and /serv by default?
I am aware of this question, which is very similar to mine, however I am interested in why this is the default behaviour.
Since by default the document root is /var/www/html, there is, to my knowledge,...
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1
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35
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How can I convince postfix to send mail to my local maildir using dovecot lmtr?
I have installed dovecot and postfix on debian 12 and it is working but broken.
I can connect to dovecot and see the existence of /var/mail/username/ on my server.
My problem is simply that sending ...
- 183
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1
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57
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Running wg-quick up wg0 is altering my /etc/wireguard/wg0.conf file
Im using debian 11 server on my VPS, and trying to setup wireguard.
after creating my private and public keys, i create my config file /etc/wireguard/wg0.conf with contents
[Interface]
PrivateKey = [...
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1
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90
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Debian: revert kernel installation from backports
I was running Bullseye (Debian 11?), tried to install kernel 6.x from the bullseye-backports. I am really not sure how to undo it. The new kernel does not work with the graphics driver and a few more. ...
- 365
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77
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Apache 2.4 multiple instances on Debian
Apache ships with a script for creating multiple instances on the same server, which is exactly what I want to do. The first instance is happily up & running on ports 80 (http) and 443 (ssl).
File ...
- 151
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Isolated bridge in Debian
According to Is it possible to enable port isolation on Linux bridges?, it is possible to create isolated ports in isolated on with the bridge command. This uses the BR_ISOLATED flag for the interface....
- 11
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How can I make journalctl use ccze by default?
I really like to colorize my journalctl-Output (tty) with ccze in Debian.
Example:
journalctl -b -k -f | ccze
How can I set journalctl to always pipe the output result through ccze without explicitly ...
- 705
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How do you configure Podman to use IPv6 on Debian
I am running rootless podman (podman version 4.3.1). I cannot get IPv6 working.
Setup
In /etc/containers/containers.conf I have set:
network_cmd_options = [
"port_handler=slirp4netns",
...
- 193
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136
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Offline APT mirror with Ubuntu updates - how can I build them?
I'm looking for a way to create a mirror of the Official ubuntu apt archive for jammy (22.04) / AMD64.
The mirror should contain updates for all packages that go into a standard Ubuntu server ...
- 383
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2
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90
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Debian 12 higher disk activity than CentOS 7
We are in process of replacing our CentOS 7 boxes to run using Debian 12 and have noticed that the overall disk activity on the same server with the same processes running is significantly higher with ...
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3
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197
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Can I rely on `curl` being installed on Debian/Ubuntu? How could I find out?
Is curl installed by default on Debian & Ubuntu (in 2024)? How could I answer this question myself?
I am writing the install instructions for software, part of which requires running a script that ...
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40
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Debian Firewall will not forward traffic from interface x to tun0
I want to have a debian system working as a router with openvpn traffic, where all traffic on interface x should be forwarded to openvpn interface y.
Following pic shows my network setup, more or less ...
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1
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84
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Move DRBD device to different underlying device without need of re-sync?
I have a pretty large DRBD device connected through WAN. It is a bout 2TB in size and the change rate of the data is pretty low.
It is configured on devices as follows:
VirtIO disk (*.img) on QNAP ...
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2
answers
676
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Debian create persistent network bridge
I need to create a persistent network bridge for Virtual machines (libvirt)
So this bridge does not need any physical ports, connections will be routed for this bridge.
If I set this up manually, it ...
- 157
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55
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Samba Incorrect Disk Usage Reporting
I am playing around with a fileserver setup. Here are the specs of the system:
root@files:/data# uname -a
Linux files 6.1.0-18-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.76-1 (2024-02-01) x86_64 GNU/...
19
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2
answers
3k
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What could explain unknown I/O on new 16TB HDD on a Debian server?
I recently obtained a new 16TB HDD for my Debian server.
I first created a partition (gpt) on it via my Ubuntu-like desktop, formatted it (ext4), and rsync'ed old data on it. The disk is now usable, ...
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53
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Cannot connect to MariaDB through an OpenVPN tunnel
Similar to this issue Unable to connect to MariaDB through an OpenVPN tunnel
I cannot connect to the MariaDB server through OpenVPN. The setup is -
Ubuntu 20.04,
mariadb Ver 15.1 Distrib 10.3.39-...
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167
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Double IPv6 Static Addresses, is it possible?
I have two ISP, and I want to have two static IPv6 [::200].
It happens to work only one of them, if ISP 1 has the static one IPS 2 doesn't have static and uses 4 radom block ==> [:abcd:1111:3333:...
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0
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82
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Freeradius over TCP
I just installed FreeRadius (Version 3.2.1) on my debian machine and configured the transport protocol of the default testing client to 'tcp'.
client localhost {
ipaddr = 127.0.0.1
proto = tcp
...
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