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

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votes
1answer
77 views

simple routing don't work under debian jessie

I'm trying to set up simple enogh system with 3 virtual debian jessie machines: first connected to second and second connected to third. I want first one to be able ping third one. To achieve this, I'...
0
votes
0answers
43 views

Error in crontab file: bad day-of-week

When I run crontab -e on my Debian server and add these lines: # System statistics */10 * * * * /usr/lib/sysstat/sa1 1 1 > /dev/null 2>&1 59 23 * * * /usr/lib/sysstat/sa2 -A > /dev/null ...
-1
votes
2answers
58 views

Iptables on a Debian machine, the delete command needs a networking restart to work?

I have a big problem with iptables, this the thing I try to make : PC windows (192.168.1.1) -> (192.168.1.2) PC Linux (192.168.2.1) -> (192.168.2.2) card I want to forward the messages from Windows ...
0
votes
0answers
73 views

LDAP PAM authentication: endless password change loop

I'm setting up LDAP authentication in a 'toy' environment - i.e. the LDAP server and client are on the same system, and the setup is quite simple. The system which I'm setting it up on is an up-to-...
0
votes
1answer
136 views

MQTT certificates verification fails

I'm been desperately trying to get my MQTT clients to connect to my MQTT broker which is set up with a certificate from a CA (Letsencrypt). To be able to get the CA certificate, I've used the ...
14
votes
2answers
9k views

See what files are being written to (like iotop but for files, not processes)

I have a Linux server, and it's doing a lot of disk io. There is one process that is doing most of the disk writes. I found this out with iotop, which shows the processes that are doing disk I/O. Is ...
10
votes
3answers
24k views

How to upgrade PHP 5.4 to PHP 5.6 on Debian GNU/Linux 7 (wheezy)

I've added these lines to /etc/apt/sources.list deb http://packages.dotdeb.org wheezy-php56 all deb-src http://packages.dotdeb.org wheezy-php56 all But still sudo apt-get update or sudo apt-get ...
0
votes
0answers
16 views

Debian & KVM: limit FC at restoring

my system: 3 Proxmox hosts (debian 8.3) connected via FC (4G) to an open-e storage. Backup is a NFS storage from FreeNAS. All VMs disk lay on that storage, everything is fine. I can create VMs, ...
0
votes
5answers
74 views

How do I increase a partition size (that doesn't use LVM) without removing and re-adding it

I have /usr on a separate partition. At the moment, this is how the server is set up: [root@localhost ~]# df -h Filesystem Size Used Avail Use% Mounted on /dev/sda2 4.9G 329M 4.6G 7% /...
0
votes
0answers
27 views

Generating a locale causes system breakdown

I generated a locale (by uncommenting locale for Polish lang - "pl_PL ISO-8859-2" and running locale-gen). After that my system broke down. I can't boot to my Gnome GUI (the system freezes with black ...
0
votes
0answers
36 views

OpenVPN NAT gateway on Debian, no traffic

My Debian server is successfully configured to connect to "HideMyAss", using OpenVPN, has internet access, receives HMA IP and still sees the computers on the LAN. I'm trying to configure the other ...
1
vote
3answers
73 views

Error when passing string to scp in for loop

I'm grabbing file list from server via find via ssh for f in `ssh -p ${SSH_PORT} -l ${SSH_USER} ${SSH_HOST} -t "find ${DIR_REMOTE} -type f | grep jpg" 2> /dev/null` When I echo the list in the ...
2
votes
1answer
86 views

What does the colon part means in Apache error.log's [client] block on Debian?

I am trying to debug an issue with Apache 2.4 on Debian 8 (jessie). I notice lines like the following in my /var/log/apache2/error.log: [Sun May 15 11:53:10.526964 2016] [authz_core:error] [pid 14805]...
1
vote
2answers
81 views

Debian / IPv6: Default route expires after 1800 secs, loosing connectivity

I'm running Debian 8 on a vServer. After installing docker and enabling IPv6 i noted something strange. I don't know if docker has anything to do with this, it's just that i noticed this problem after ...
7
votes
1answer
8k views

how to set up monit to monitor disk-space

I use monit on my server to monitor apache and mysql running. Now I want to add an alert if the disk gets too full. I added this for testing in /etc/monit/monitrc: check device rootfs with path /dev/...
0
votes
0answers
58 views

Qemu kvm necessary kernel and qemu version on jessie host and guests with Skylake

I am running a dedicated server with Debian jessie and the current backported linux-image-amd64/linux-headers-amd64 (currently 4.5), because the server has a Skylake CPU. On the dedicated root, I'm ...
0
votes
1answer
19 views

pam_mkhomdir + nfs creates noboy:nogroup owned home dirs

this is a strange issue I've been struggling with some time now. I have a working ldap and authentication via pam on debian 8. I have successful tested pam_mkhomedir and I got a home directory for the ...
0
votes
0answers
11 views

add ability for users in group to see and attach to screen sessions - Debian Wheezy

I'm trying to add the ability for users in a group to be able to list and attach to eachothers screen sessions. I've been pretty unsuccessful so far. I know about multiuser but I'm kind of throwing ...
0
votes
2answers
312 views

VirtualBox VM aborted install UbuntuServer 14.04 Assertion Failed

The title is pretty much explicit, I hope. Host machine: Debian Wheezy Guest: Ubuntu Server 14.04 virtualbox installed from host repositories Here's the log file (lines where the error is): 00:15:...
0
votes
1answer
254 views

How to access hpsockd access log?

Since in Debian the only available SOCKS5 server through the standard repos is hpsockd I gave the server a try. Now I'm having problems with some connections and need to debug the connections ...
0
votes
0answers
23 views

Debian Apache: only IPv4 -> no IPv4 connection, IPv4 + IPv6 -> IPv4 connection?

I have a strange issue on a debian (8.4) webserver running apache (2.4.10): Apache somethings stuck, after reboot the server I could access the website. So I investigated: For testing I activated ...
0
votes
1answer
118 views

kadmin can't find master key

I can't use the kadmin.local interface I just get the error Authenticating as principal root/admin@deadpool.cavill.org.uk with password. kadmin.local: Can not fetch master key (error: No such file or ...
1
vote
0answers
16 views

Samba server permissions not checked on windows clients

I have a Debian 7 installed with samba version 4. I have a samba share which is accessed by windows clients (Windows 7 and Windows 10). Each folder in the share belongs to a group and only members ...
0
votes
0answers
11 views

Memdisk for PXE on armhf

I'm setting up a network boot server for both nix and windows distribution on LAN using bananapi board. Did it before with regular servers but what stops me now is memdisk as kernel for windows boot. ...
0
votes
0answers
48 views

Kernel panic on Dell R710 Kernel 4.4.1

We are running Debian 7.9 server with kernel 4.4.1 on Dell R710 (Intel(R) Xeon(R) CPU X5670 @ 2.93GHz) and after some time (maybe once a month) server stop working and I see on a screen the kernel ...
1
vote
2answers
435 views

courier-imap w mysql : share a folder between 2 virtual users on debian

I have a working courier-imap server on my Debian Etch private server ; users are virtual, authentificatin goes through mysql. It's been working good for years. I would like to share an imap folder ...
0
votes
0answers
40 views

Can't increase Java heap in Debian

I'm setting up an environment to run some web apps developed in Grails, and deployed in Tomcat. I made the default configuration and the first web app deployed just fine, but after logging in, the ...
0
votes
0answers
27 views

fail2ban jail not working

I am struggling to get a single jail working in fail2ban. Fail2ban seems functional, and other jails are working. I have tried using fail2ban-regexp and it seems to be matching multiple times, but ...
2
votes
1answer
61 views

http working, but www. does not

I have been hunting for an answer but I really cannot find anything on the subject most likely down to me searching the wrong things. I am fairly certain its something to do with the way I have setup ...
2
votes
1answer
66 views

Bad search filter - postfix, OpenLDAP, Saslauthd

I am trying to setup a mail server on Debian Jessie and have come across a problem that's doing my head in. When trying to access OpenLDAP through saslauthd via the command testsaslauthd -u user1 -p ...
0
votes
1answer
35 views

debian networking does not restart properly

I have a Debian 8 machine, where I've configured two VLAN interfaces in /etc/network/interfaces. Now I've deconfigured it (deleted information from interfaces file), restarted networking, and now it ...
2
votes
1answer
156 views

Routed bridge networking for KVM guests along with eth1 alias interfaces for shared hosting with dedicated IPs for each virtualhost

First question here on serverfault, so kind of a newbie, all feedback is welcome. I have a dedicated server running Debian GNU/Linux 8.4 (jessie) with one public IP and multiple additional public IPs ...
1
vote
0answers
21 views

How I can look from that script runs sendmail?

my problem is that some script in php or some other script or program is sending spam. I am not able to trace where this program runs. do the following: ps aux | grep sendmail nginx 28286 0.0 ...
1
vote
0answers
37 views

Check status of samba4 in debian

In samba3, I can use command /etc/init.d/samba status to check status of samba service. But in samba4, that command does not exist. So I want to ask how to check status of samba4?
1
vote
0answers
55 views

Https: not working but :443/ work?

I don't understand (on debian) why I can access to my website using http://www.myserver.com:443/ but not directly with https://... I'm using LetsEncrypt, all my cert' are generates and works. Here my ...
2
votes
2answers
13k views

PPTP VPN Problem

I am using Debian OS with pptpd. My clients (both Windows and Mac) cannot complete the connection. The following shows in syslog: Jun 2 12:52:37 vpn pptpd[891]: MGR: Maximum of 6 connections ...
0
votes
1answer
26 views

Enabling mod_deflate don't compress HTTP responses

I decided to upgrade from Apache 2.4.10 to Apache 2.4.20 (I need it to use HTTP/2), downloaded it and installed it from sources (whereas I installed Apache 2.4.10 from debian repositories) with ...
0
votes
0answers
32 views

vsftpd server stops working after flood of connections

I have a bizarre problem where vsftpd will suddenly stop accepting any connections. This happens when the server is flooded with 4 or more connections of the same user. Afterwards, any new ...
1
vote
2answers
1k views

daemontools: How to find out what is wrong?

I'm exploring daemontools to run some of our applications, which generate some output as well (on both stdout and stderr). I installed daemontools on a debian box. Every time, I do a svc -u /etc/...
0
votes
0answers
37 views

sogo source installation on “debian stretch” give me only errors

I have compiled SoGO 3.0.2 on Debian from the source, setup NGINX and simply don't get SOGO to run. Not, that it has something todo with permisions, it's more or less that sogo can't throws out errors ...
1
vote
1answer
31 views

Apache webserver - Mod status

Heey all, I have a question regarding the Mod Status module of Apache. https://www.apache.org/server-status As you guys can see there is a line: Total accesses and a value after it. Is it possible ...
5
votes
4answers
3k views

In Ubuntu Linux, how do I list packages installed from the “universe” repository?

On an Ubuntu 10.04 LTS server, I want to list installed packages and see what repository they come from. It’s easy to list installed packages, but it does not include the name of the repository (such ...
0
votes
2answers
2k views

Automate Postfix instalaltion with debconf-set-selections?

I'm currently trying to automate my Postfix installation and most things work really... but I can't seem to stop postfix-policyd asking for the MySQL root password. Here is what I got so far: ...
2
votes
1answer
85 views

Sending mails from Gmail through my VPS (postfix, dovecot, postfixadmin)

This problem has been bugging me for a long time now and i want it to be fixed. On my VPS I have set up Postfix working correctly with postfixadmin and dovecot. (I can send (by terminal) and receive ...
11
votes
3answers
26k views

Why do ICMP Redirect Host happen?

I'm setting up a Debian box as a router for 4 subnets. For that I have defined 4 virtual interfaces on the NIC where the LAN is connected (eth1). eth1 Link encap:Ethernet HWaddr 94:0c:6d:82:0d:...
1
vote
1answer
34 views

Mark packages to be installed and run aptitude in interactive mode

I want to install series of packages. Selecting all of them in TUI is inconvenient. But if there're any conflicts, resolving them in interactive mode is much easier. Is it possible to mark packages ...
2
votes
1answer
28 views

Finding source repository for Debian packages

I have a Debian wheezy server which has many sources configured under /etc/apt There's seems to be a lot of duplicate sources, and I would like to simplify this. In order to avoid breaking anything, ...
0
votes
0answers
46 views

Add mod_deflate (for SVG) for a single VirtualHost only

I have Debian/Jessie with apache2 (2.4.10-10+deb8u4) (and a WordPress installation). I added the following line in /etc/apache2/mods-enabled/deflate.conf to enable mod_deflate for svg+xml globally: ...
0
votes
0answers
15 views

where is my disk space being used in Debian 5?, please advise [duplicate]

Untitled Document Hello i have a virtual server with a Debian disk of 13GB,3GB RAM, only 13% is free disk space. There is a Mysql database of 2GB I have executed a few of commands but it doesn'...
0
votes
1answer
40 views

PostgreSQL installation under debian

I'm trying to install PostgreSQL server on a server running debian8. I installed the package postgresql-9.5 with apt, but it seems like there are missing programs. I tried to create a cluster but ...