Questions tagged [debian]

Debian is a popular and influential GNU/Linux distribution. Questions here should generally be about Debian Server.

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19 views

Customizing Linux server after flashing image

I have a process which applies a image/clone of a "fully configured" Debian-based system to batches of like hardware, and then customizes several key system properties POST flash for ...
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Add IPV6 range / block on network debian configuration

I am configuring a network interface on my server, editing this file /etc/network/interfaces.d/50-cloud-init.cfg I need to have a list of IP address configured which all are in the same ip-block. For ...
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Server IP spoofed and attacking

I have a server that has been reported as an attacker since January, finally today I found some information about these attacks, however none of the logs on my server shows anything similar. As a ...
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How can I add a kernel argument to a debian preseed file?

I've been using Debian preseed files for a while now doing netinstalls of Debian and Ubuntu. Ubuntu 20.04 has a weird video problem even on the text terminal. After install, sometimes you can't see ...
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How to install php-5.6 imagick on Debian 10 [closed]

Is that possible to install php5.6-imagick on Debian 10? I installed debian 10 and moved my old codebase in it, but site not working with php7 so I have figured out how to install php5.6, but when I'm ...
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How would I set up Debian 10 and Postfix security for a limited send-only email setup?

I (me and my wife) run a small Debian 10/Buster web server with a few websites for friends and need to set up outgoing email. I've got to the point where I can send emails from the command line (echo &...
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Create custom AMI for Aarch64 with latest Debian and custom Kernel

I am trying to create a custom Debian based AMI with my own custom kernel for AWS EC2 instances, specifically I'm trying to run it on t4g.micro/medium instances. I debootstrap an ARM64 Debian and copy ...
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1answer
15 views

Tinyproxy error: Unable to connect to the server: Access denied

I installed tinyproxy 1.8.4 on a bastion host with public IP on GCP, to forward traffic to a private GKE cluster. Now I'm using ssh to connect to the bastion host with port forwarding and the ...
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change umask in profptd for sftp

I want to give group write permissions to new directories created by sftp, tried the following: set umask in /etc/proftpd/proftpd.conf Umask 002 002 disable sftp ...
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28 views

How to create a deb package to install files?

Below is the working control file while creating debian package using the link. I kept a single dependency and it is creating the deb file. Package: my-program Version: 1.0 Architecture: all Essential:...
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How to add multiple dependencies to debian package?

Below is the working control file while creating debian package using the link. I kept a single dependency and it is creating the deb file. Package: my-program Version: 1.0 Architecture: all Essential:...
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Debian server unable to run Certbot

root@vps434142:~# certbot Traceback (most recent call last): File "/usr/bin/certbot", line 6, in <module> from pkg_resources import load_entry_point File "/usr/local/lib/...
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How to upgrade a single package with ansible?

I'm trying to write an ansible playbook which only upgrades the linux-generic package but cannot find the magic incantation to get it to actually work. With this play, I get the error parameters are ...
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1answer
48 views

overwriting default $PATH

I am trying to lock down regular users on a Raspbian installation. I'll be using rbash for that. I want to edit the PATH file so that only ~/bin files can be executed. I've stripped $PATH from /etc/...
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Linux header 4.9.0-11-amd64 is missing in debian

I am a software developer and have only a basic understanding about Linux systems. We are in a migration phase from GCP to AWS and found that the Linux headers are missing while installing Cloud ...
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Webpage always takes 5 seconds to load the first time using Nginx

I've deployed a webserver using Nginx. The webserver is under a virtual machine using Virtualbox. Everything seems to work properly. Connections are carried out on a local network context. The problem ...
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187 views

Load average explanation for multi-core systems

I'm trying to understand the Load average in my Debian system. I've read some explanations of the displayed values and I came to understand that the number represents how "overloaded" my ...
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Is there any command in Debian and Ubuntu similar to Red Hat sudo yum updateinfo list cves?

in Red Hat, I'm used to: Check which cve currently affect the system and the severity: sudo yum updateinfo list cves Get more details about that CVE: sudo yum updateinfo <CVE_NAME> Install all ...
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32 views

Postfix: How to keep an email in the mail queue for further investigation?

Is there any way to keep an email in the Postfix mail queue for investigation/debugging purposes? I want delay the delivery and the email to be kept in the queue which let's me check it's contents. ...
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16 views

Failing to download metadata with DNF upgrade playbook

i'm trying to learn something about ansible and the automation, unfortunately I'm getting frustrated at the early step. I just tried from debian 10 machine with ansible to write a yaml to upgrade 2 ...
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Where are the official sources for libzbar?

zbar is a project that provides a barcode/qr-code scanning library and command line programs. libzbar0 is provided in version 0.22 on Debian buster (our Docker images) and in version 0.23 on Ubuntu 20....
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45 views

Debian 10 backward compatibility with eth0

Noticed when upgrading to Debian 10 (Buster) that the public eth0 network interface is now called ens5 on AWS EC2. Is there a way to create a symbolic link or similar so that legacy applications that ...
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systemd's “predictable interface names” not being predictable

I'm running Debian Testing (kernel 5.10.0-2-amd64 / systemd 247.2-5) on a Mac Pro as a NAS / VM host. Today, I added a Thunderbolt 3 card (Gigabyte Titan Ridge) - and noticed something strange: the ...
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Modify a Ubuntu dkms file to Debian

Hi I was trying to install this kernel patch HP p410i. https://medium.com/@terryjx/enable-it-mode-on-hp-smart-array-p410i-raid-card-on-hp-dl380-gen7-servers-4e827eeb78ca On following this guide I was ...
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Linux no_console_suspend kernel parameter causes delay on resume from sleep

I'm facing no_console_suspend kernel parameter issue on my computer with Debian Bullseye (recent kernel 5.10.13-1). Normally, the computer wakes up from sleep immediatelly on the key press. But if I ...
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PHP-FPM behaving strangely with Nginx on new webserver

So, I'm moving over to a new webserver, primarily because CentOS will soon be no more, so I am switching over to Debian 10. I have Nginx and PHP configured as I'd like, but am having a really strange ...
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Debian UFW deny incoming

I have applied the following rule: ufw default deny incoming and restarted ufw. All ports are still open. I can access any port from any IP. Why? ~# ufw status verbose Logging: on (low) Default: deny (...
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22 views

Xen VM continuously restarts and kernel fails to start init

I am using a VM built using the Xen hypervisor and libvirt management layer. I couldn't connect to the VM after updating the Debian verison from 8 to 9 so I tried logging into the physical machine the ...
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My files were randomly deleted from my Google Cloud VM instance

I'm hosting a Minecraft Server from Google Cloud, and all of the sudden the server shut down, I went into the console to restart it just to find that the files were nowhere to be found. I looked at ...
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1answer
120 views

Debian: On same NIC, bridge plus distinct IP address, with different MACs

Debian host. I have a single NIC that's supposed to sit on two networks; on 172.16.0.0/24 and 10.0.80.0/24. On the 172.16.0.0/24 network, there should be a bridge, so that local KVM hosts can attach ...
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FusionDirectory : Sending an email with postfix and force html content-type

I'm not sure that's the way to do it but I'm trying to configure the "lost password recovery" on my FusionDirectory instance. I managed ton configure postfix on my server to use our (...
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How to install mysql workbench on linux debian 10 (Google Pixelbook) [closed]

I first asked this question on StackOverflow but someone told me there that I have a better chance of getting an answer here I am trying to install MySQL Workbench on my Google Pixelbook. It runs ...
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Routing traffic through specific interface

I do have a debian based gateway that provides internet access through two interfaces (eth0, tun0) - the later being connected to a public vpn. Some clients are routed through eth0 and some are routed ...
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1answer
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Application stopped to find shared library

wkhtmltopdf is used to create pdf files in Debian Linux. wkhtmltopdf suddenly stopped working. Running it from shell throws library not found error: root@x:/usr/local/bin# ./wkhtmltopdf ./wkhtmltopdf: ...
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how to link two sftp user account to the same directory

I have an sftp server running under debian system and I want to create two sftp user accounts that grant access to the same chrooted directory.
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Debian Stuck at Booting from Hard Disk after installation on KVM

I'm trying to install Debian on Qemu-KVM on RouterOS v5.25 I tried : debian-10.8.0-i386-netinst.iso debian-8.11.0-i386-kde-CD-1.iso debian-live-9.0.0-i386-gnome.iso on disk image created using : qemu-...
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29 views

Dovecot submission protocol keeps getting turned back on after Debian upgrade

I have dovecot imap server and exim4 running on Debian Buster. I am using exim4 for smtp, but at the Debian upgrade before last (early Jan 2021), Debian arbitrarily turned on submission in dovecot by ...
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28 views

Poor proxmox pveperf performance on a mdadm raid 1

When running pveperf on a Debian + Proxmox PowerEdge R540 server that uses two hard drive in a raid 1 configuration (using mdadm), I get very low performances in the number of FSYNCS/SECOND: $ sudo ...
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9 views

Can't restore master/slave replication from Percona backup (slave server)

A slave is restored from a master backup created with Percona xtrabackup On the master binlog is set to expire in 14 days and this backup is less than 24 hours old my.cnf (master) expire_logs_days = ...
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SFTP Chroot with ability to create directories

I chrooted some Debian users by adding them into sftp_users group and setting this into sshd config: Match Group sftp_users X11Forwarding no AllowTcpForwarding no ChrootDirectory %h ...
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17 views

How to install php5.6-imagick extension on Debian 10?

I have a old cms and custom plugins and there is some parts that need a Imagick php extension. I've installed php5.6 correctly and some basic extensions (php5.6-mysqli, php5.6-gd) etc but I can't ...
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36 views

I am using a reverse proxy with nginx installed on Debian 10.7, and nginx stops nowhere without giving an error

It seems that the system itself is stopping my reverse proxy with nginx, there is no error in the nginx logs or in the system logs, the information I have is just below: root@production:~# service ...
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2answers
181 views

How to tag IPv4 and IPv6 packets with different VLAN tags on a Linux box?

I want to tag incoming IPv4 and IPv6 packets from a dual stack enabled connection with different VLAN tags, e.g. IPv4 packets should go to VLAN4 and IPv6 packets should go to VLAN6. To be more general,...
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28 views

SAMBA SMBD process consuming all ram

I'm using Samba as Active Directory with cups as printing server in Debian from a time ago without problems But from about 2 weeks to now, some of the "smbd" process are eating all the RAM (...
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Viewing boot in serial Console on GCP Compute Engine

I am diagnosing a boot process of a custom image on GCP Compute Engine. I am trying to figure out how I can view the boot from the serial console or anywhere else. This is all I see on the serial ...
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Debian SAS Not Attaching As SD device (another does)

I have an x4100 with 4 drive slots 3 drives are part of the RAID 1E. On the RAID Array I have installed Debian. I am using the 4th slot for accessing file storage drives. The HP 600GB drive attaches ...
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41 views

What is the latest Ubuntu or Debian server I can install on proliant dl380 G6

I would like to know what is the latest Debian or Ubuntu server I could install on a dl380 G6 server. I have to run 2 things on it. Nextcloud 20 and Odoo v14 (ERP) Would this work or not? Or have I ...
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IP-CONFIG: no response | eth0 hardware address DHCP RARP

I have debian 10 in a xenserver 7.0 vm with static ip and keeps trying dhcp. Already removed some packages that could be interfering, but must still have something installed. the post initialization ...
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1answer
36 views

how to limit traffic usage per user?

we have a server with four users with limited 60TB in/out traffic per month, but we're not splitting the cost evenly and we are wondering if it is possible to limit traffic for each user, based on his ...
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22 views

75% CPU wait and apt upgrade hanging

Recently I observed a relatively constant 7/8 (core) load on one of my servers. Looking with top, seems that CPU is constantly 75% waiting: Tasks: 401 total, 1 running, 400 sleeping, 0 stopped, ...

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