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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2
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1answer
32 views

How to detect virtual machines freezes

On cloud platforms you often hear that because of high load on neighboring VMs, disks over oversubscribed ethernet, backups, or live migration to other hardware, the virtual machine can 'freeze' for a ...
0
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0answers
11 views

Can not view Ubuntu desktop on VNC viewer

I'm having problems on trying to connect to Ubuntu 14.04 via VNC from Windows. I'm able to stablish the connection but VNC isn't showing desktop icons. Futhermore, if i move the mouse on the VNC ...
3
votes
2answers
63 views

Software RAID 10 not any faster than s/w RAID 5 on Ubuntu 14.04 box, why?

We are doing some tests on a new database server with 4 x 240 GB SSD disks. From what I have read RAID 10 should be faster than RAID 5 with the same "one-disk loss ok" redundancy. However when ...
0
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0answers
5 views

apache mod_rewrite scenario subdomain capturing from the http_host and passing it as subdomain to other url while rewriting it

i am trying to write two rewrite rules which are PASS THROUGH or PROXY so that i can hide the underlying url. Case1: When a request comes to app.domain.com/folder1/folder2/ it should go through ...
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0answers
14 views

How to remove Mirror HDD RAID1 [on hold]

Sorry for asking such stupid kind of question but i am not expert but really i want to solve it I am not expert on linux system and server's configuration I purchase OVH Dedicated server that have ...
-1
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0answers
33 views

One PHP script that brings whole server down

We have a WordPress site hosted on Amazon, running Ubuntu and Apache. Occasionally the site becomes very slow and unresponsive. According to newrelic, the server is busy with this PHP script: ...
2
votes
3answers
2k views

Cyrus IMAP: Unable to connect to remote host: Connection refused

I'm working on setting up a Cyrus 2.2 IMAP server on Ubuntu Server 9.04. If I telnet from the server itself: # telnet localhost imap I get: * OK IMAP Cyrus IMAP4 v2.2.13-Debian-2.2.13-14ubuntu3 ...
1
vote
2answers
1k views

Ubuntu Server, 2 Ethernet Devices, Same Gateway - Want to force internet traffic through 1 device (or at least allow it to work!)

I have a Ubuntu 10.04 Server with 2 ethernet devices, eth0 and eth1. eth0 has a static IP of 192.168.1.210 eth1 has a static IP if 192.168.1.211 The DHCP server (which also serves as the internet ...
0
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0answers
3 views

Switching a VirtualBox Ubuntu Server VM from UEFI to BIOS [migrated]

I have a virtual machine running in VirtualBox of Ubuntu Server 14.04.1 LTS x64. When I initially set it up, I configured the VM to use EFI instead of BIOS. But, it turns out VirtualBox's ...
0
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1answer
17 views

ASSP performs SPF check on mail it forwarded itself

So I set up ASSP and it seems to work because I'm getting mail. Yay. But it's performing some strange SPF checks. Some domains can't send me mail, and receive an error message back. In it is a link ...
10
votes
6answers
7k views

pam service(sshd) ignoring max retries

I have vps that I use to run a webserver on, it currently runs ubuntu server 12.04. Since a few weeks I keep getting a lot of errors in my ssh console. 2014 Apr 11 08:41:18 vps847 PAM service(sshd) ...
1
vote
3answers
537 views

How To Include Additional Software In preseed.cfg For Ubuntu Server 13.10

I am doing fully automated installation of Ubuntu Server (Saucy) 13.10 and also wants to include custom additional softwares,The Format of preseed.cfg is: d-i debian-installer/locale string en_US ...
0
votes
1answer
243 views

unable to access '/root/.config/git/attributes': Permission > denied”

In our Ubuntu Server we are able to clone as Nginx user in /usr/share/nginx/www that has www-data:www-data ownership getting a warning as ” warning: unable to access ...
0
votes
1answer
7 views

Ubuntu OpenVPN GUI setting incorrect default routing gateway

I'm currently playing with setting up an OpenVPN Access Server in AWS. For the most part I've got everything working, except when I try to add the VPN connection to Ubuntu using the networks GUI. ...
0
votes
0answers
14 views

Docker debian slow dns resolve

I got terribly slow dns resolve inside my ubuntu when using wget or curl, apt-get,... root@815340a37f0e:/# time curl www.google.com ... real 0m5.132s user 0m0.006s sys 0m0.003s When I do ...
0
votes
0answers
10 views

`hosts-restricted` without `restricted-usernames`

I have a user that is getting blocked by denyhosts on a daily basis after some initial problems and confusion with keys, passwords, account names and such, even though I keep unblocking him. When I ...
0
votes
0answers
21 views

Difficulty sharing physical ethernet device with Xen 4.4

I have a virtualized PowerEdge T320, with a Ubuntu Server 14.04 running Xen 4.4 as host, that I use at my lab to do scientific computations (I'm the admin of the machine). This server has two physical ...
-1
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1answer
27 views

Ubuntu server suddenly freeze 12.04LTS

I am using Ubuntu to host a Java server application and apache2 for website. The server is running well for a month and it suddenly get frozen. The java server application has no response. Apache ...
5
votes
1answer
844 views

Celery Daemon receives unregistered tasks

I installed Celery for my Django project following what the official tutorial / doc says. And it's working fine when I launch celery at the command line, I can see it receiving the tasks and execute ...
-1
votes
0answers
4 views

Zend optimizier doesnt work after installing it [duplicate]

I install it following this tutorial on a VestaCP based host http://www.debiantutorials.com/installing-zend-guard-loader-zend-optimizer-on-wheezy/ I enable it adding the lines to ...
1
vote
0answers
48 views

NGINX using 100% of the server CPU when testing with Blitz.io

I'm facing an issue here and after four days of looking around I decided to ask for some help here, after all a million heads can think a lot better than one. I have a Ubuntu 14.04 server setup with ...
0
votes
1answer
905 views

Error in Apache: /var/run/apache2 not found

This is more self-answered question but since it drove me crazy I would like to share with the community and maybe someone can tell me why it happened or what it caused. The thing is I wanted to ...
2
votes
1answer
45 views

Openvpn server with bind9 DNS on AWS. Linux client cannot resolve host names.

I have a openvpn server set up and working on an AWS debian instance. It works as should but I want to push DNS queries to linux clients from bind9 which is on the same server as openvpn. All seems to ...
2
votes
3answers
1k views

VSFTPD does not allow upload with virtual users

I am attempting to setup VSFTPD with virtual users on a server running Ubuntu 12.04. I have configured the server to allow for virtual users to login, but I am having trouble getting it to allow ...
0
votes
1answer
798 views

Apache fast-cgi and php-fpm on Ubuntu 14.04 - Run PHP File as the owner

I am trying to setup FastCGI and PHP-FPM so that a php file can be executed as the owner of the file. I am trying to replace SuPHP with FastCGI and fpm. Earlier, I had folders with different owners ...
0
votes
1answer
932 views

Turn off EPMD listening port (4369) in Ubuntu / RabbitMQ

I'm trying to secure an install of RabbitMQ, and am not sure how to secure the Erlang EPMD port. I only have one machine running anything, so I'd like to make it listen only on the loopback device. ...
32
votes
4answers
55k views

how do I upgrade from php 5.3 to php 5.4.6 in ubuntu?

Is there an easy way out to get the latest PHP? I have tried updating my package but none of it has 5.4.6 yet.. if anyone knows on how to do it quickly, can it be shared here? I've tried compiling ...
4
votes
1answer
1k 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 ...
0
votes
1answer
41 views

very long “connecting” in chrome using ipv6

A connection to an ipv6 subdobain www6.example.com takes very long. In chrome the net tab shows 20s spend in "connecting". All other times are much faster. However only the first two connections are ...
-1
votes
0answers
11 views

Installed Zend Guard Loader, sites don't work anymore [on hold]

Well I was getting "Zend Optimizer not installed" page for a wordpress site that I just transfered to a new server (is it possible the theme needs it?) installed it using this tutorial: ...
1
vote
2answers
451 views

How do you repair a Ubuntu 14.04 RAID-LVM-DM-CRYPT-LUKS Physical to Virtual system that won't boot?

I can't get a Ubuntu 14.04 Virtual server to boot correctly. It's recently been cloned "dd if=/dev/sda of=vmimage" The Physical has a RAID1-LVM-DMCRYPT-LUKS configuration, The boot sequence aborts and ...
1
vote
0answers
25 views

Domain user can't login after power failure

I've got a Ubuntu 14.04 server running Samba 4.1.6 functioning as a domain controller. Last Saturday I had a brown out, and after the server came back up my network shares were no longer automatically ...
1
vote
2answers
2k views

403 with Apache and Symfony on Ubuntu 10.04

I'm trying to run symfony on my apache installation (I'm using xampp for the whole package) and it keeps giving me a 403 error every time I try to access my website. I've got vhosts set up with the ...
3
votes
3answers
2k views

How can I prevent OpenVPN from clobbering local route?

I have a local network on 192.168.1.0 with netmask 255.255.255.0. When I connect to a VPN though OpenVPN (as a client), it pushes a route for 192.168.1.0 that clobbers the existing one, making my ...
0
votes
1answer
24 views

What causes “SYN to LISTEN sockets dropped”?

A quite busy proxy server has lots of "SYNs to LISTEN sockets dropped". I learned one cause could be a too small backlog size. But in that case the "times the listen queue of a socket overflowed" ...
0
votes
1answer
27 views

Ubuntu / node.js dropping incoming requests [on hold]

I am getting dropped requests on a node.js server. I have simplified the test case to the point that it must be a problem with system setup. I am a developer and have very little experience with ...
0
votes
1answer
1k views

very slow connection to ssh server from client (but not other servers)

I have an Ubuntu 12.04 laptop that is taking so long to connect to various servers (in different data centres) that it seems like a bit of a lottery whether I'll actually get a connection. If I ...
0
votes
2answers
839 views

Default File Permissions (Passenger, Rails, Ubuntu Server)

I've deployed a Rails application that is using page caching and is run via Passenger on Ubuntu Server. Rails caching simply uses Ruby's File.open to write the cached files. Unfortunately these files ...
-1
votes
3answers
871 views

Port 80 apparently closed ubuntu 14.04

I'm installing a small server on the company where I work. I go to whatsmyip.org and it tells me it is 190.124.165.35. When I go to canyouseeme.org it tells me that the connection timed out for port ...
0
votes
2answers
23 views

Running startup shell script for ruby application as other user (not root)

I have installed RVM using 'user01' on Ubuntu 14.04 and user01 can start my rails application as expected. I, however, want to start this application following system start-up. I am trying to use the ...
2
votes
2answers
1k views

Network connection to Firebird 2.1 became slow after upgrading to Ubuntu 10.04

We've got a setup that we're using for different clients : a program connecting to a Firebird server on a local network. So far we mostly used 32bit processors running Ubuntu LTS (recently upgraded ...
-1
votes
1answer
25 views

Ubuntu 14.04 Server: Use STATIC DNS servers [on hold]

How can I disable DHCP nameservers in Ubuntu 14.04? I have 2 Ipv4 and 2 Ipv6 nameservers which I want to use, but resolvconf only generates a file with nameservers from my hoster because the server ...
1
vote
1answer
258 views

preventing ipmi kernel drivers from loading

I'm trying to prevent the ipmi kernel modules from loading on a server with a SuperMicro X8DTG-D motherboard running Ubuntu 14.04. My motivation for doing so is that the modules sometimes seem to take ...
0
votes
1answer
11 views

404 error for WebResource.axd with fastcgi-mono-server4

I have a simple ASP.NET WebForms app that I created in Windows and copied over to a Linux server (Ubuntu 14.04) that is running fastcgi-mono-server4 and nginx. The app runs fine on windows, but when ...
0
votes
1answer
893 views

Apache as a reverse proxy not working for gunicorn

My Goal is to let client connect through https connection but apache serve it to my application which is running on same server over http. Here is my minimalistic apache configuration file (for ...
0
votes
0answers
30 views

How to connect ubuntu to external smtp on port 587?

I have a fresh ubuntu server installation with no firewall and want to setup ssmtp to an external smtp server (e.g. smtp.mandrillapp.com:587), however, I couldn't get my server to connect to any ...
1
vote
3answers
3k views

ulimit -n not changing - values limits.conf has no effect

I am trying to raise the open file descriptor maximum for all users on an ubuntu machine. This question is somewhat of a follow up to this question. open file descriptor limits.conf setting ...
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votes
0answers
29 views

tunnel 6to4 via ssh [on hold]

Before starting let me give you short idea about infrastructure and topology and the problem which we are trying to resolve We have 4 Machine i.e. A, B, C and D with Ubuntu OS We are trying to ...
1
vote
1answer
2k views

Ubuntu 12.04 glusterfs volume failed to mount at boot time

I have just setup 7 KVM guests, all running Ubuntu 12.04 LTS 64bit Minimal server to test out glusterfs 3.2.5 from the Ubuntu official repo. Two of them form a mirrored pair (i.e. replica 2), and five ...
0
votes
1answer
697 views

Fakeraid doesn't show up in /dev/mapper

I have the following setup: 1 256GB SSD / Win8-Ubuntu 13.04 UEFI Dualboot 2x1TB in RAID 1 (Detected and working) 2x4TB in RAID 1 (Not Detected not showing up in /dev/mapper) The problem is that I ...