Questions tagged [debian]
Debian is a popular and influential GNU/Linux distribution. Questions here should generally be about Debian Server.
1,896
questions with no upvoted or accepted answers
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Debian Jessie Hyper-V 2012 - ksoftirqd using lots of CPU time
I have a Debian VM running which uses quite a bit of CPU time in ksoftirqd. I have other servers running Ubuntu (both 12.04/14.04) that do not have this same issue at all and may have to migrate back ...
- 131
3
votes
0
answers
3k
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Routing with multiple NICs on debian
I have a machine with two NICs on different network segments, I've set up routing for the different segments.
It works if I run all the routing commands manually, but I can't get it to work when ...
- 31
3
votes
0
answers
2k
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Debian, IPv6 is not asssigned to interface
I have a Debian 7 Server with several networks and KVM VMs running configured:
2a01:4f8:191:439b::/64
144.72.132.208/29
The IPv6 Subnet is splitted into /96 Networks to assign each bridge a own ...
- 31
3
votes
0
answers
327
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Kerberos credentials cache dates reported differently in Debian Squeeze and Debian Wheezy
I have two Debian servers which use same LDAP/Kerberos server, but dates in output of klist on them shown in different format - mm/dd/yyyy on squeeze vs dd/mm/yy on wheezy.
Looks like they just use ...
- 31
3
votes
2
answers
5k
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Unable to access 3ware 3dm2 web interface, failed to start listening socket
I am unable to get to the 3ware 3dm2 web interface. When I attempt to execute 3dm2 from the command line, i get the following error "(0x0C:0x0005): Failed to start listening socket". This was working ...
- 73
3
votes
1
answer
108
views
Should the GPG key of a debian repository be shared among its maintainers?
I'm following this tutorial to set up a debian repository
https://wiki.debian.org/SettingUpSignedAptRepositoryWithReprepro
This repository will be managed by me and my colleagues. We want to sign ...
- 131
3
votes
0
answers
3k
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sshd running at 100%
I'm running an Ubuntu/WordPress server on Amazon EC2 which is experiencing problems every 24-48 hours: I get a CPU alarm from EC2, log into the server, and discover sshd is running at 99.9% CPU.
This ...
- 86
3
votes
1
answer
163
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Disallow virtual package in Debian's /etc/apt/preferences
I know I can disallow a particular package in Debian by appending /etc/apt/preferences with:
Package: *x11*
Pin: release
Pin-Priority: -1
But how can I do that for a virtual package like httpd? I'd ...
- 150
3
votes
0
answers
1k
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Debian Squeeze Preseed Installation “The current kernel doesn't support the Logical Volume Manager. You may need to load the lvm-mod module.”
I'm attempting to install Debian Squeeze via an instalinux.com image pre-seeded with more or less default settings. (Only notable addition is the openssh server, which is a clickable option in the ...
- 360
3
votes
0
answers
460
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Xen and Turbo Boost
Running the Debian Squeeze default Xen, I am unable to get any of the CPU frequency scaling stuff going.
As soon as I revert to the standard kernel I get it.
Digging through the internet it seems ...
- 2,009
3
votes
2
answers
8k
views
Cannot restart apache2 on Debian server - "Cannot load /usr/local/apache2/modules/libphp5.so into server"
Okay... I'm something of a beginner when it comes to servers, and I'm having some issues with restarting apache on my Debian web server.
I just ran the following:
aptitude install apache2 openssl
...
- 131
3
votes
0
answers
658
views
PHP + ImageMagick Performance Issues
Good Day,
I have two environments: OpenVZ VPS and Pentium 4 local dev machine.
They have all packages installed the same way. ImageMagick is compiled from sources without OpenMP support.
When I run ...
- 63
3
votes
1
answer
855
views
KVM guests are very slow after host upgrade to Debian Squeeze
Yesterday I upgraded a Debian Lenny server to Squeeze. This server hosts two KVM guests. One has run Debian Squeeze itself all along, the other was originally Debian Lenny, upgraded to Squeeze the day ...
- 476
3
votes
0
answers
981
views
IPsec tunnels between Linux and Solaris
I have a Solaris machine sitting out in the ether somewhere that I would like to make part of my network via IPsec. I have this working between Solaris machines but not between Solaris and Linux.
I ...
- 3,061
3
votes
2
answers
2k
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sendmail: website and email on same domain/server
I am using sendmail for my website, my email address is also using the same server name. So, www.zedsaid.com and [email protected]. Sendmail seems to not want to actual deliver the mail to my inbox, ...
- 727
3
votes
1
answer
768
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dpkg broken while upgrading Debian Etch to Lenny
Good day!
While trying to recover a box to lenny it seems I've broken things. It upgrades libc and glib after that dpkg seems to be broken.
I can run apt-get, but it gets segmentation fault from ...
- 309
2
votes
3
answers
385
views
Minimal backups of a Debian server
(This was originally asked on SuperUser --- they pointed me here as being more appropriate.)
I have a shiny new Debian server running in an Amazon EC2 instance. I've spent a while setting it up and ...
- 121
2
votes
0
answers
85
views
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
2
votes
1
answer
217
views
Debian 12 upgrade, kernel/initramfs loads only 1 SAS card out of 2
I am upgrading a server with 2 SAS cards from Debian 11 -> Debian 12
I have come upon an interesting problem. At first it didn't load any SAS cards and I got to initramfs.
Increase disk detection ...
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2
votes
1
answer
543
views
Why does my pfsense gateway break SSL for some internal hosts?
I have a proxmox cluster with pfsense acting as a firewall and gateway for the cluster nodes and VMs. VMs have no problem, but the cluster nodes can't browse any websites using SSL, which of course ...
- 173
2
votes
1
answer
825
views
Upgrade PHP and keep extensions and config changes
I would like to install PHP 8.2 but keep all the packages and config changes from 8.1
In a perfect world I would run one script an this would work again for 8.3 next year.
Steps:
Get all packages/...
- 355
2
votes
0
answers
266
views
How to add to excludes alerts on smartmontool
I faced with problem and hope for your help.
Started getting notifications from smart on Debian 10 server:
Device: /dev/nvme1, Critical Warning (0x04): Reliability
Found that this alert causing ...
- 21
2
votes
2
answers
3k
views
rsyslog won't start - pid already exist
I was trying to configure rsyslog to forward logs from a specific file to a syslogserver and I ended up purging the whole configuration (the rsyslog service was stuck - wouldn't start) ..
so I purged ...
- 119
2
votes
1
answer
3k
views
Limit php-fpm memory usage on a constrained server
I "move" this question from superuser as I think it's more appropiate here. I've actually found sort-of duplicate questions, but none has solved my problem.
General scope
I have a Nextcloud (...
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2
votes
0
answers
541
views
x11vnc -reflect listen crashes when the source VNC server connects to it
I want to run x11vnc in reflect mode and reverse/listenning connection mode. So, x11vnc it's going to act as a repeater for another vnc server and it's going to wait for this second vnc server to ...
- 141
2
votes
1
answer
1k
views
debian - packages have unmet dependencies
i am having Debian 11, and i am trying to install some php libs like mysql:
command: sudo apt install php-mysql
result:
Reading package lists... Done
Building dependency tree... Done
Reading state ...
- 21
2
votes
0
answers
230
views
ifup eth0 - /etc/network/if-pre-up.d/iptables exec format error
I am currently unable to bring eth0 up again at my Debian 10 vServer after my hosting provider was fixing some issues and restarted my container.
sudo service networking status will output:
ifup[378]: ...
- 121
2
votes
0
answers
2k
views
Kubernetes coredns not receiving requests
I've set up a kubernetes cluster, single node, debian 11. However, my CoreDNS doesn't seem to resolve anything. I'm noticing this by portainer being unable to load resources.
http: proxy error: dial ...
2
votes
0
answers
97
views
Debian/Linux weird mdraid state
Why is md1 state UU, md0 is U_ and md2 is _U?
nvme1n1 is broken here.
Can I safely replace nvme1n1 now?
You can see md2 state, nvme0n1p3 seems removed but nvme1n1p3 seems active.
How can I safely ...
- 21
2
votes
0
answers
755
views
Progress for zpool import -fFX
I'm running zpool import -fFX on a 8x4TB striped, mirrored (raid10) pool. The documentation states the extreme rewind import (import -X) performs a full traversal of all blocks in the pool for ...
- 21
2
votes
0
answers
289
views
Debian 10: sendmail service stops constantly
Whenever I start sendmail service, it reports
May 01 00:51:43 systemd[1]: Starting LSB: powerful, efficient, and scalable Mail Transport Agent...
May 01 00:51:43 su[6784]: (to smmsp) root on none
May ...
- 121
2
votes
0
answers
2k
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Debian Buster: Ngnix won't upgrade to 1.18, Conflicts: nginx-common
After updating and upgrading all packages on the server, Nginx I can't get to update.
The Debian Buster package's Nginx is at 1.14, but I want to upgrade to the latest stable, 1.18, which isn't part ...
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2
votes
1
answer
2k
views
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 ...
2
votes
0
answers
937
views
Unable to setup a GRE tunnel between 2 servers
I currently have 2 servers:
Server A: 2.2.2.2
Server B: 3.3.3.3
I want to create a GRE tunnel from server A to server B.
I have ipforwarding enabled on server A:
cat /proc/sys/net/ipv4/ip_forward
1
...
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2
votes
0
answers
100
views
zfs diff gives error on encrypted dataset (Key must be loaded to discover path names: Permission denied)
I'm running the following on Debian 10:
zfs-0.8.4-2~bpo10+1
zfs-kmod-0.8.4-2~bpo10+1
I have a 2TB (passphrase encrypted) dataset used by many colleagues. I am also using Zabbix for monitoring, and ...
- 413
2
votes
0
answers
4k
views
apt-get: libc6 upgrade needed but can't be installed; Kernel update needed but can't be done like anything else
Hello serverfault community!
After upgrading to Debian Buster apt doesn't seem to work in any way. I've read and tried several solutions but none of these worked.
Output when I try to install any ...
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2
votes
0
answers
350
views
Nextcloud internal server error after server upgrade
I upgraded my server today from Debian 9 to Debian 10 and installed PHP 7.3 with all modules needed for NC but when I try to open the website I get "internal server error. More details can be ...
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2
votes
0
answers
393
views
Frozen/dropped TCP connections in AWS
We have a number of AWS EC2 instances within the same AZ that transmit large amounts of network traffic to each other. In a small fraction of the connections, when a client on host A connects to a ...
- 471
2
votes
0
answers
1k
views
Permission denied for user having a secondary group in an NFS shared folder
I have a NFS shared folder (storage) that can be accessed by other machines on my network. The right user can read and write files and folder in that storage, but I've created another user and ...
- 626
2
votes
1
answer
229
views
http logfile filter is not shown on report
I'm on debian 10.4 and I've a fresh installation of logwatch. Everything works as expected except logwatch (ver. 7.5.0) that output everything except http logs report.
I ran logwatch with --debug med ...
2
votes
0
answers
221
views
Debian KVM Server - Add Secondary Subnet
I have a Debian 10 server (from Hetzner) that I want to set up as a KVM host to set up virtual machines for myself.
The server itself has a static IP like so:
auto lo
iface lo inet loopback
iface lo ...
- 515
2
votes
0
answers
2k
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Enable http2 on Debian 11 Bullseye and Apache 2.4.41
I'm testing Debian 11 Bullseye with Apache 2.4.41 and I'm trying to activate HTTP2
I did some things :
sudo a2enmod http2
It returns : Module http2 already enabled
Then I put this line on my SSL/...
- 31
2
votes
0
answers
74
views
Galera replication when two nodes can't communicate
Let's say I have a 3 nodes Galera cluster with MariaDB composed of servers A, B and C. Server A and server B can't communicate between each other but both servers can communicate with Server C. How ...
- 343
2
votes
0
answers
5k
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postfix/postfix-script: fatal: mail system startup failed
In a Digital Ocean droplet with Debian 10 (buster), trying to set up postfix + dovecot email server. Trying to do postfix start:
$ sudo postfix start
postfix/postfix-script: warning: symlink leaves ...
- 121
2
votes
1
answer
274
views
Cannot login to SQL Server instance installed on Debian using domain account
I can login to SQL Server 2019 (installed on Debian Buster) with SA account using SQL Management Studio on Windows Server 2016, but I cannot do this with the domain account using integrated ...
- 495
2
votes
0
answers
790
views
How to prefer one IPv6 link over another?
I have a server with Debian Buster and 2 network cards, with 1GbE and 10GbE respectively. Both cards are configured with
iface enpXs0 inet6 auto
privext 2
Both cards receive a global IPv6 ...
- 271
2
votes
0
answers
188
views
Making custom Kernel configuration changes with debian-installer in QEMU
I am installing Debian10 (armhf) on a virtual machine in QEMU, like this:
Download this netboot/initrd.gz
Download this netboot/vmlinuz
Create an empty disk image with:
qemu-img create -f qcow2 ...
- 155
2
votes
1
answer
2k
views
Fail2ban does not work for postfix "NOQUEUE: reject"
My postfix instance (Debian 9) is under permanent attack from spammer bots trying to use it as an open relay. I have fai2ban up and running and it works perfectly against SASL attacks, but I cant get ...
- 161
2
votes
0
answers
2k
views
Clean OpenVPN3 on Debian 9 fails
I've just created a fresh Debian 9 with OpenVPN3 installed.
I'm getting the following error:
openvpn3 session-start --config server.conf
Using configuration profile from file: server.conf
Session ...
- 419
2
votes
0
answers
996
views
Clear routes from DHCP option 121
I have 3 subnets
192.168.10.0/24
192.168.103.0/24
192.168.2.0/24
Most of them can route to each other via static routes defined in their respective default gateways.
However due to some ...
- 36