Ubuntu Linux is a Debian derivative that aims to bring Linux mainstream. Questions on this site should generally refer to Ubuntu Server. Note that http://askubuntu.com is specifically dedicated to Ubuntu questions.

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passwd: Authentication token manipulation error

I am running a Ubuntu 12 machine, and have recently been working to secure it. I made all the changes from this guide. I am not running a Linode, but I used these as a starting point for setting up ...
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2answers
29 views

SSL connection not working with public ip address

EDIT : Problem solved, it was indeed the firewall of the server wich was blocking port 443. Everything is working now I'm trying to install a self-signed SSL certificate on an apache server running ...
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Ubuntu Apache CPU Usage

This just came to my attention: If there's 4 processes (of any kind) that each need time on the CPU, and there's two CPU cores to use, then the OS scheduler will assign CPU time equally ...
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1answer
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Why does Apache split up the CPU for www-data processes out of 100 or 200?

It seems like Apache always splits up the CPU usage for www-data processes out of 100 or 200. Why is this? For example, one www-data process = 100% CPU usage: http://i.imgur.com/mfRuOSm.png Four ...
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MariaDB inside Ubuntu OpenVZ CT: Error on delete of '/tmp/#sql' (Errcode: 1 “Operation not permitted”)

I've installed MariaDB 10.0.12 on a fresh OpenVZ container: ubuntu-14.04-x86_64-minimal.tar.gz. Unfortunately when I browse tables via Adminer I keep getting errors like these: Error on delete of ...
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1answer
12 views

Setting up a VPN with rules who can connect with who

For delivering updates and support on software I've been working on I have been thinking about setting up a VPN server. The idea would be that the clients are constantly connected but only the traffic ...
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0answers
7 views

Fastcgi request record is too big

I am running an Nginx server, which requires me to accept URI String containing up to 4mb of data. I have configured nginx to accept the params by setting: /etc/nginx/nginx.conf ...
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1answer
17 views

Apache virtualhosts not going

I have an AWS virtual server, with ubuntu 14.04 and apache 2.4.7. I have two domain names (let's say name1.com and name2.com), and I wanted both them to point to the IP of the server, and that apache ...
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18 views

Webmin slave DNS

I setup slave DNS server for my master, I configured everything, all domains was transfered to the slave server, I can add new domain, edit existing domain, but in the logs I've got problems. There ...
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0answers
12 views

unable to create the key file. Ubuntu installation with preseed

i want to install ubuntu with full disk encyption. when i do it manually all go fine. i want to automate it. i tried it using preseed. my preseed file is d-i partman-auto/method string crypto d-i ...
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0answers
20 views

EC2 instance won't allow pinging

Ive got an EC2 instance with an iptables config as follows: *filter :INPUT ACCEPT [121:8012] :FORWARD ACCEPT [0:0] :OUTPUT ACCEPT [64:6240] -A INPUT -p icmp --icmp-type echo-request -j ACCEPT -A ...
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10 views

Ubuntu apache error log not showing remote ips

If I view my apache error log located in /var/log/apache2/error.log it wont show the remote ip from the client who generated the error. Now it looks like: [Sun Jul 20 13:07:55 2014] [error] [client ...
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1answer
20 views

Why won't upstart stop my node server?

I've got a super simple test node server # server.js var http = require('http'); http.createServer(function (req, res) { res.writeHead(200, {'Content-Type': 'text/plain'}); res.end('Hello ...
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0answers
38 views

determine which application is sending mail via postfix

I would like to track down which applications (other than PHP, which I can track via mail.log setting in php.ini) are connecting to and sending email via postfix. Is this possible via any log ...
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0answers
23 views

Shared hosting server setup [on hold]

Right now I'm creating shared hosting infrastructure (one server as host, multiple LXC guests with inbound traffic to them via nginx, NAT their outbound traffic back to the Internet). So, could ...
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2answers
16 views

What versions of Apache, PHP and MySql will Tasksel LAMPP stack install in Ubuntu 14.10?

I need to have PHP 5.3 and MySql 5.3 or an estable not bleeding edge version of both, how do I find what will Tasksel LAMPP stack install on my Ubuntu?
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20 views

syslog-ng 3.5 flush_lines not working with smtp

What I want: automatic emails every time someone successfully logs into my Ubuntu 14.04 LTS server. /var/log/auth.log gets 2 lines written to it every time I login. Example: Jul 22 13:55:49 server ...
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1answer
32 views

fail2ban to block Wordpress brute force attacks on wp-login.php

Is there a way to set up fail to ban to block on IP that hits wp-login too many times? I have tried adding this jail.local: [apache-wp-login] enabled = true action = iptables[name=wplogin, ...
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0answers
11 views

Processes clogging up server process queue at same time each day

I have a small web application on AWS running ubuntu with 3 front end web servers and a database server. Each night at the exact same time (3am) we have a significant spike in "processes in the run ...
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0answers
14 views

Process can't see recently created symlink on NFS

I have a small amount of old ubuntu desktops connected by a switch acting as a mini test cluster. The workers take commands from a master node via the SLURM queue manager. They share a data mount and ...
0
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1answer
9 views

Apache TOP command time format?

When running top on an Apache server, what is the time format for the output? For instance, is it minute:second.second? http://i.imgur.com/wBx8PAh.png Edit: I'm running on Ubuntu 14.04 and the ...
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1answer
12 views

Freeradius Log file Information

I have installed freeradius in Ubuntu 10 LTS and i run freeradius in debugging mode as "freeradius -X" where i see the live debugging logs. Now i want to know where these logs (accept / reject) are ...
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12 views

Access virtual machine sshfs mount on host

So I'm running a Ubuntu 14.04 VM in vmware player on a Windows 8 Host. I have a remote file system mounted and for this explanation lets say it's host@example.com:/ and it's mounted to /mnt/host/ How ...
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5 views

Java JCE Files Safe from Package Manager

My Java application requires JCE. I followed the typical installation method and copied the JCE files over those provided by my package manager (apt-get, Ubuntu 14.04). I recently ran general software ...
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1answer
11 views

apache2 reverse proxy 404 error

I have set up an apache2 server. I am trying to enable a site to reverse proxy in which I will redirect /registry to :5000. I have apache2 up and running and am able to reach the default page () but ...
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2answers
32 views

a2ensite fudging supplied path

When trying to a2ensite my new virtual host, I'm receiving an error indicating that the virtual host config isn't there, when the path I specified does in fact exist. The a2ensite command seems to be ...
0
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1answer
39 views

SSH connection timing out on certain clients only

I have a server that has around 100 SSH tunnel connections active from client servers across Canada and the US. We use the same device that runs a custom build of Ubuntu and load that on each client ...
0
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1answer
23 views

Linux NFS mounted Windows network share

I am setting up a new box (Ubuntu 12.04 LTS) to play with and I mounted (via mount.cifs) a windows network share at /mnt/common. Also added the lines to fstab, mounts just fine at boot time. Now when ...
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1answer
30 views

Migrating a server from Apache to Nginx - how is my request handled?

I'm trying to migrate a service from a server to another. It's a simple php app. On the first server (Apache) I could request a JSON in the following way: ...
5
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1answer
94 views

Understanding service --status-all output

I am trying to understand the output of the service --status-all command on Ubuntu 13.10, since the man page doesn't explain it. For example: [ + ] rsyslog [ - ] sendmail [ ? ] sendsigs [ + ] ...
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0answers
70 views

Haproxy using 10GB Memory and 100% CPU with 50k connections

On a Ubuntu 14.04 x64 server, Haproxy uses 3.3 GB of memory and 6.8 GB of swap, while handling 52k connections. The CPU usage also keeps spiking to 100% before most of the traffic was redirected to ...
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11 views

XMLRPC.PHP file on Wordpress DDoS attack [duplicate]

Getting TONS of these in apache access log: 41.99.38.36 - - [19/Jul/2014:20:58:15 +0000] "POST /xmlrpc.php HTTP/1.1" 403 436 "-" "Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)" I ...
0
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1answer
105 views

Strange POST request to server in apache log

I have been seeing this all day in my apache access log: 213.55.105.126 - - [19/Jul/2014:18:39:24 +0000] "POST /xmlrpc.php HTTP/1.1" 503 2539 "-" "-" they are continuously coming in. different IP ...
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2answers
47 views

PXE boot server on a xen PV guest?

I've set up a Xen hypervisor on ubuntu 14.04 and a PV guest also on ubuntu 14.04. I want this PV guest to be a PXE boot server. But when I look at the /boot folder I see that it's empty. I'm a newbie ...
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3answers
207 views

How to increase swap space on a live server

On Ubuntu 14.04, the swap file has to be increased as the memory and swap usage are reaching 100% usage. On a live production server, can the swap be increased with minimal disruption to the service? ...
1
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1answer
31 views

Upgrade SATA drive on Dell Poweredge 1950, RAID 1, Ubuntu server

My current set up is a Dell PowerEdge 1950, two 250GB SATA drives, RAID 1, OS is Ubuntu server. Using it for running OTRS (open source help desk). I'd like to upgrade the drives to the maximum ...
3
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2answers
86 views

Use of rpm and yum for application installation in large installation environment

Our very large organization has developed a standard for hosting of applications which dictates that the application and all components on which it relies must reside in a dedicated application volume ...
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37 views

BIND 9: Testing the Reverse zone gives error, NS '' has no address records (A or AAAA)

I am trying to create a ptr record. I read a tutorial on https://help.ubuntu.com/10.04/serverguide/dns-configuration.html and now I have spend almost the whole day to fix it but could not figure out ...
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0answers
21 views

ping: sendmsg: Operation not permitted (sometimes)

On a Ubuntu 14.04 running Haproxy, after a service haproxy reload, Haproxy is suddenly reporting all servers behind it as down. After some digging around, I noticed that ping is not working properly, ...
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0answers
7 views

LXDE Desktop shortcuts layout configuration files

I am working on Lubuntu 14.04 LTS with LXDE Desktop Manager and I would like to change default Desktop icons layout. (These are shortcuts for some application). By default, these icons are layered at ...
0
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0answers
17 views

CURL: Human-readable Transfer Speeds for FTP Uploads [on hold]

On Ubuntu 14.04, Curl produces human-unfriendly progress data during FTP uploads: % Total % Received % Xferd Average Speed Time Time Time Current Dload ...
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1answer
55 views

Why upgrade from 12.04 LTS to 14.04 LTS

We have been using 12.04 LTS already for a couple of years but we are considering to move to the next LTS version which is 14.04. It was released on April 2014 I so was wondering how people consider ...
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1answer
16 views

ubuntu 12.04 combine hard disk partiions

I´ve a Vm with Ubuntu 12.04 installed. Thus the hard disk is running out of disk space my plan was to increase the disk space and after that expand the existing root logical volume with a newly ...
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0answers
16 views

How to remove -bash error on ubuntu 12.04? [on hold]

After removing rvm from ubuntu, whenever type cd something, there are errors: $cd / -bash: /usr/local/rvm/scripts/initialize: No such file or directory -bash: /usr/local/rvm/scripts/hook: ...
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1answer
50 views

Getting “Received too large SFTP packet” error when connecting with root account to the server via WinSCP

I've tried different ways and read some solutions including these: Why I am not able to ssh as root? Editing with Winscp And an article from Forum of Ubuntu I don't understand why when I connect ...
2
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1answer
80 views

Weird network problems with Vagrant, VirtualBox, Ansible and Ubuntu Server box

We are using Vagrant and Ansible to provision VirtualBox machine. It was working great, but recently we've started to encounter some weird network problems with tasks that require access to the ...
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0answers
25 views

Samba Roaming not working

I had configured Samba as domain controler on Ubuntu 14.04. I can register computers(WIndows 7) to the domain but the roaming profile does not work. smb.conf looks like: # Global parameters [global] ...
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1answer
21 views

Setting up additional breadcrumb re-direct using mod_rewrite

Currently I have mod_rewrite configured as follows: <VirtualHost *:80> ServerName address.website.org ServerAdmin webmaster@website.org DocumentRoot /var/www Redirect permanent / ...
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0answers
24 views

Squid hangs after 15-20 minutes

I have tried to implement the squid proxy server, it worked fine initially but after 15-20 minutes it started hanging, i mean i had to restart the squid services to work it fine. I have changed the ...
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0answers
21 views

What exactly is a “SWAP FILE” when dealing with RAM in a Linux machine? [duplicate]

What is a swap file and what does it do? How do it increase the RAM and are there any downsides? Why use swap file vs. getting more RAM? Does swap file hurt the CPU IOPS? I understand that it some how ...