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Questions tagged [debian]

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

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Why does Debian's PHP sessionclean script touch all open files first?

I'm studying /usr/lib/php/sessionclean at the moment. There is one thing I don't fully understand. What is the purpose of touching all opened session files before cleaning up? I understand that this ...
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maldet not sending emails on scans but send on manual request on report

So i am having maldet running on daily scans and i am not getting emails sent of scan reports, also when i run manual scans maldet finish scan but not sending email reports. But when i want to send ...
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How to mount Apple RAID on Debian server?

I have two Samsung ssd's in a RAID 0 configuration. It was made with Disk Utility on macos Mojave. I would like to mount them on a Debian server but I can not figure out how or if it is possible at ...
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can't ping my own IP address (interface with multiple IP Addresses)

I have a server where one of its interfaces (eth2), has multiple IP addresses: $ ip addr show 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default link/loopback 00:...
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Migrating postgres data from PC to DB

I've dumped my data to a file using: pg_dump database > file When I try to import it on my debian server, using: psql database < file it works for the most part but then crashes saying: ... ...
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1answer
15 views

swaks failing on ipv6 despite forcing it to use ipv4 with -4 switch

swaks -4 -S -t user1@example1.com -f user2@example2.com -ao -au user2 -ap ***** -tls -s example3 --header Subject: Q4mSShEEoYnAviWg *** Error connecting to example3:25: *** IO::Socket::INET6: ...
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4 views

apt-cache policy output and version mismatch

Issue: Cannot update nginx packages (Debian version 8.11) The following packages have been kept back: nginx-common nginx-light The following packages have unmet dependencies: nginx-light: ...
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1answer
36 views

Error upgrading irqbalance: insserv rejected the script header

I was upgrading my debian 8 system when one package produces an error: apt-get upgrade Reading package lists... Done Building dependency tree Reading state information... Done ...
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1answer
17 views

How can I check the realease of a package in debian?

I am planning to do an upgrade on my system and I have a mix of three releases, there are some packages from wheezy, some from jessie and some of stretch. I would like to get the list of the packages ...
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1answer
35 views

Apache stops responding to requests

There is a lightly loaded web server. Debian jessie, apache2, python app. There is a simple curl script, on the same machine, that sends an alert if apache does not respond. Sometimes apache stops ...
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1answer
41 views

Install Nvidia Drivers 9.0 for TensorFlow pip (Debian 9.7)

I installed Nvidia drivers 9.1 on my Debian 9.7 (Dataproc) when I try to run TensorFlow 1.9 via this test script it fails: Used this guide to install GPU Drivers: https://cloud.google.com/dataproc/...
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Why top is showing wrong steal time?

I have a high processor load on the server. When I staring top, it's showing steal time 99, but after a second it becomes 0. But in iostat steal time equals 99 Debian GNU/Linux 8 (jessie)
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Debian Linux NAS server sometimes freezes my LAN (Debian v8.11 Jessie, OpenMediaVault 3.0.99 Erasmus NAS)

I have a NAS server, using Debian Linux sometimes freezes my LAN (Debian v8.11 Jessie, OpenMediaVault 3.0.99 Erasmus). Router: ASUS RT-N18U Sometimes when the whole NAS server freezes and at the ...
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1answer
28 views

apt-cacher-ng: 406 Not Acceptable response with HTTPS

I try to set up apt-cacher-ng to cache all apt packages for the local network. But with the graylog repository I have some trouble. System: Debian 9 with apt 1.4.0 and apt-cacher-ng 2-2 On a server ...
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41 views

Slow SSH Remote port forwarding

first of all, I apologize for my bad english, I'm not a native speaker. I'm currently having troubles using SSH remote port forwarding. I've got customer's systems (running Debian 8) that keep active ...
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1answer
38 views

Valid DKIM but “body hash did not verify” error on Outlook / Hotmail / Live?

Why do I get dkim=fail (body hash did not verify) on Outlook / Hotmail / Live when I have a valid DKIM setup in place? I've made sure that my SPF, DKIM, DMARC records are set up correctly and the ...
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difference between local and inet socket?

I noticed that, while setting up opendkim, the options for the Socket are: #SOCKET="local:/var/run/opendkim/opendkim.sock" # default #SOCKET="inet:54321" # listen on all interfaces on port 54321 #...
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28 views

mdadm shows bad blocks presents

I'm checking a 4disk X 1TB raid5 array + cryptluks + lvm with 2partitions, / and /home. First I got a "not enough operational devices 2/4 failed" "Failed to RUN_ARRAY /dev/md/1: Input/output error. ...
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17 views

debian 8 host with samba server filesharing doesn't work on KVM/qemu VM's over bridge mode

i have the problem, that my debian 8 server where a kvm/qemu and a samba server is running has the problem, that i cant connect from any VM to the fileshare folder. i can see the host over the network ...
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1answer
66 views

POSTFIX Won't Start says: bind 0.0.0.0 port 25: Address already in use

Sorry, I've read tons of related topics but didn't get solutions for my issue. Suddenly this morning, POSTFIX did not respond. I didn't do anything special in my server. POSTFIX status says : ...
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10 views

fail2ban action error: fail2ban.action: ERROR iptables -w -D INPUT -p tcp -m multiport --dports ssh

I'm getting following error in logs: fail2ban.action[7487]: ERROR iptables -w -D INPUT -p tcp -m multiport --dports ssh -j f2b-sshd#012iptables -w -F f2b-sshd#012iptables -w -X f2b-sshd -- stdout: b''...
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30 views

SSH cannot connect from the internet/no ping from router

I'm trying to open ssh of my server to the Internet so that I can do remote management, but it's not working. Drilling down the problem, I found out that I cannot also ping my server from the ...
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11 views

Debian does not auto-start bridge

/etc/network/interfaces looks like this: # The loopback network interface auto lo iface lo inet loopback allow-hotplug auto iface eth0 inet manual pre-up ip link set up dev $IFACE pre-down ip ...
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1answer
10 views

Deleting root pfifo_fast (tc) on Linux

I'm trying to delete all qdiscs to do "fresh" configuration: % tc qdisc del dev enp0s25 root RTNETLINK answers: No such file or directory But it's there: % tc qdisc show qdisc noqueue 0: dev lo ...
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Reconnecting secondary node in shared-nothing active-passive DRBD cluster after secondary reboot

I'm using DRBD (config below) and tried to test reliability of the setup. I have rebooted secondary node (host1) and noticed it went into this state: host1: 0:r0/0 WFConnection Secondary/Unknown ...
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15 views

auditd exclude logging SSH user

Linux 4.9.0-7-amd64 #1 SMP Debian 4.9.110-3+deb9u2 (2018-08-13) x86_64 GNU/Linux auditd-2.6.7-2 amd64 There's user (user1 - auid=1002) - ssh account (SSH tunnel for remote MySQL connections). I need ...
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2answers
75 views

Installation of pecl_http on PHP 7.3 / Debian 9 Stretch fails

I am trying to install pecl_http in PHP 7.3, however, there is an error: root@dev:/etc/php/7.3/mods-available# pecl install pecl_http downloading pecl_http-3.2.0.tgz ... Starting to download ...
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LARADOCK (laravel) container and MAILCOW docker container conflicting

I´m using Debian 9. PROBLEM: I can only reach my subdomain by appending a specific port Summary: I´m running two docker containers (laradock and mailcow). Both of them have their own instance of a web ...
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1answer
40 views

Crontab timings confusion

Can somebody please eplain why a weekly cron job I'd assumed would run at 06:47 on Sunday morning in fact ran at 00:10 on Tuesday morning? This is a fairly virgin Debian Stretch box (been up a while ...
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1answer
16 views

Finding SMART status of SATA disks in HP SmartArray

I'm trying to find SMART params of the disks in my array, it seems that simple way does not work: % smartctl -d sat --all /dev/sg0 -H smartctl 6.6 2016-05-31 r4324 [x86_64-linux-4.9.0-8-amd64] (local ...
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Using runit instead of rc.d on Debian with Rex

I have systems that ensures that their services are running by runit instead of rc.d or systemd on Debian, and I am trying to use Rex to start building a coherent setup across my systems. I would ...
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3answers
35 views

Debian 9 - rc.local deprecated, how to launch python at startup

I am slightly lost, I have a Debian 9 server and a Python Flask script that I am trying to launch at startup. In the past I have used rc.local to launch things at startup but from reading it seems ...
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0answers
77 views

Where does Virtualbox keep home directory path configuration data? [migrated]

I have reinstalled my system, and simply copied over my old home directory. However, I have also changed my user name. When I attempt to create a new virtual machine, I'm presented with the error: "...
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21 views

Adminer not working - Configuration file is missing

I have a VM running Debian 9.7.0 64-bit off a Windows 10 host machine. This VM has the packages openssh-server, ufw, mysql-server, mysql-client, adminer, and their dependencies installed via apt. ...
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1answer
56 views

Extremely slow writing to external USB disk

I have measured the transfer on the following disk to be 2.75MB/s: iManufacturer 2 Seagate iProduct 3 BUP Slim SL The interface is USB2 so it should be fastered than that: ...
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6 views

HostnameCanonicalizationWorker error of host with mongod

Context debian stretch mongod version v3.2.11 Issue I got exactly the same error as this post but the answer do not work in my case. This is the error output from mongodb.log : ... start logs ... ...
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2answers
613 views

nic: Something Wicked happened! ffff

I'm configuring a GNU/Linux Router with Debian Stretch (9.7) and before rebooting the server, all traffic from one interface to another was going ok, but after that, I received a message like this (...
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0answers
20 views

Openvpn tun0 loses IP and route

My OpenVPN client setup just stopped working, maybe/likely linked to a recent update of Debian (testing). The end result is that the openvpn daemon looks happy and gives me the right syslog messages, ...
2
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1answer
66 views

quotacheck: Cannot stat() given mountpoint –cugv: No such file or directory

I am trying to enable quotas on an ext4 partition of a Debian 9 VM. The partition is mounted on /public with the usrquota,grpquota options. The machine has been rebooted. Here is what happens: root@...
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1answer
11 views

Debian wheezy, update repository

I'm working with a Debian GNU/Linux 7.5 (wheezy) When I check the file /etc/apt/sources.list The file has this line: # Line commented out by installer because it failed to verify: #deb http://...
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0answers
25 views

Dovecot are not delivering spam emails to Junk folder - Debian 9, postfix, spamassassin

I followed this answer but the spam emails aren't being delivered to Junk folder My files: /etc/postfix/master.cf # # Postfix master process configuration file. For details on the format # of the ...
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0answers
21 views

(Debian) Running two mail- and web- servers at the same time in different docker containers

I´ve setup a Debian Webserver with two docker containers: - a laradock container (laradock.io - Documentation availible at laradock.io). - a mailcow container (mailcow.email - Documentation ...
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1answer
22 views

How to check if APT package *needs* interaction on upgrade before running the upgrade itself?

Some APT packages upgrade without asking any questions, e.g. if no configuration files are changed. Others don't. I would like to check if a package needs or "wants" interaction on upgrade. I do not ...
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1answer
59 views

Unable to schedule unattended upgrades in Debian Stretch

I am running Debian 9 Stretch. I have the following package installed. unattended-upgrades/stable,now 0.93.1+nmu1 all [installed] My 20auto-upgrades file looks like : # cat /etc/apt/apt.conf.d/...
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1answer
127 views

How to install multiple PHP versions in Virtualmin 6, Debian 9 [closed]

By default Debian 9 comes with PHP 7, but I was interested in PHP 5 for older websites as well. I tried following/adapting this guide (not virtualmin specific) https://pehapkari.cz/blog/2017/03/27/...
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17 views

How to configure Postfix in Debian 9 to send emails using verified email address in AWS Simple Email Service?

Let us say I have verified an email address webserver@example.com is AWS SES for use. When the backup scripts that are run with cron fail to execute successfully I want the Postfix mail server on ...
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1answer
14 views

How can I remotly monitor a Node process making sure it's running using outbound HTTP heartbeats vs inbound?

I would like the process itself to send heartbeats vs receiving them from services like Amazon Route 53 health checks. I would like to avoid running a web server on that process.
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1answer
58 views

[27759]: ERROR Failed to execute ban jail 'sshd' action in fail2ban log

On my Debian 8 server, I see lots of this error in fail2ban log. [27759]: ERROR Failed to execute ban jail 'sshd' action 'iptables-multiport' info 'ActionInfo({'ip': '1.1.2.2', 'fam ily': 'inet4',...
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1answer
18 views

systemd attempts to mount davfs2 too early - before DHCP address received

I'm trying to get davfs2 to mount a WebDAV folder automatically on debian stretch at boot. It seems that systemd attempts to mount the folder with mount.davfs before the DHCP client has an IP address ...
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2answers
41 views

Debian with iptables and fail2ban not ban IP

I have server with Debian 9. I have installed fail2ban and configured it. It work with sshd (ban IP on failed logins) but i can't make it work with apache-auth (IP is ban but iptables don't block it). ...