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.

learn more… | top users | synonyms (2)

0
votes
0answers
14 views

Is a Beowulf cluster a solution for me? [duplicate]

Background I'm an undergrad working on an scientific experiment. Till now I was pilot testing our one of the program on Ubuntu 12.04 and now I need to deploy it. The PC on which I tested the program ...
0
votes
1answer
36 views

How to install the latest version of OpenSSL on Ubuntu?

I see that the latest security patches are not yet available from apt-get install openssl on Ubuntu 14.04. What steps do I need to take in order to install the latest OpenSSL without conflicting with ...
0
votes
0answers
15 views

Linode resource splitting [duplicate]

We would like to move our sites to Linode and I have a theoretical question. Which is the best in speed and why? If MySQL runs on a different machine, is it give better result or worse? 1 option ...
2
votes
1answer
27 views

How to get the DHCP-controlled DNS domain name for my Ubuntu machines in a Windows network?

I've been going in circles for a while trying to figure this out. I have a number of Ubuntu machines (some virtual) on a Windows network. From a Windows machine, I can ping or nslookup the Ubuntu ...
1
vote
1answer
31 views

Check if Samba only works locally

Introduction My intention is to make files accessible from my local network. (streaming videos/music, sharing files,...) For this purpose I set up an Intel NUC with Ubuntu and connected it to my ...
0
votes
1answer
18 views

Ubuntu /boot partition stay in mode “Filesystem state: not clean” (tune2fs)

I have the problem with my /boot partition on a ubuntu "Ubuntu 11.10" system. Maybe also on "Ubuntu 12.04 lts" but I cannot verify this, because it's a prodctive system. If I umount the /boot ...
1
vote
0answers
6 views

Upgrading PHP and installing libraries in non-interactive mode

Problem I m trying to install php 5.5 and php5-memcached for my machine which has php 5.3 pre-installed. Also, I can not change default configuration as it is staging box provided for CI.So let's ...
2
votes
2answers
13 views

Single sign on with Apache and LDAP

I have a server running two web applications: Gerrit and Mantis BT. Now, these applications connect to an LDAP server to authenticate users and it works fine. But the user has to authenticate for each ...
0
votes
0answers
17 views

Invalid postfix email address on serverpilot [on hold]

I have a digital ocean droplet with ubuntu installed and being managed by serverpilot. None of my php scripts are able to send emails and looking at the postfix logs, it's because the email from ...
1
vote
1answer
17 views

service in vagrant VM not picking up configuration

I want to setup a Vagrant configuration to create and launch an Ubuntu guest VM which will launch a supervisord service within the VM after Vagrant up. I'd like for this to work on Windows, Mac, and ...
0
votes
1answer
19 views

Can't connect to pre-configured NAS boxes with static addresses and default gateway 172.16.2.1

I received several TeraStation NAS boxes which I can't configure because I can't connect to them, presumably because they were setup for a specific environment. I'm hoping to virtualize the ...
1
vote
1answer
18 views

post_max_size will not change, stuck at 128M, other settings work

I am trying to increase post_max_size to 1024MB, I am using ini_get('post_max_size') and phpinfo() to check the setting and post_max_size shows as 128M in both. some phpinfo() on the server: PHP ...
0
votes
2answers
28 views

How to find faulty memory module from MCE message?

I am trying to understand MCE message to find which memory module is bad on a server. This message appears in /var/log/kern.log in one server that freezes two times today. Apr 13 22:39:22 mbox ...
0
votes
0answers
5 views

Ubuntu 14.10 : Qt5 assistant not found [migrated]

I am working on a system running Ubuntu 14.10 in which I have started programming on Qt5. Before for few months when I was working on Qt, I found that that QT-assistant tool really comes in handy. I ...
-3
votes
0answers
9 views

Mobile App Development [closed]

I want to create some ios and android native apps connecting to my web application. It's database-driven something like a Facebook. Well there a tonnes of server technologies and setup such Docker and ...
0
votes
0answers
13 views

Uninstalled plesk while trying to install apache2-mpm-events [closed]

I was trying to install apach2-mpm-events module but it removed some of the packages from psa and now i could not reinstall plesk nor apache2. My operating system is Ubuntu 12.04.5 LTS. I need a clear ...
2
votes
1answer
29 views

Prosody, how to get the IP address of connected clients?

I'm running Prosody server on ubuntu. I was wondering if there's a possible way to get the IP address of each client who connects to my server, basically, I want 2 things: 1) I want to get the IP ...
-1
votes
0answers
18 views

How to configure PostgreSQL password? on a new VM

I installed my postgresql like this. sudo apt-get update sudo apt-get install postgresql postgresql-contrib and accessed it like this sudo -i -u postgres and my a gist of my pga_hba.conf # DO ...
-2
votes
0answers
22 views

Ubuntu or Debian for a server? [closed]

Can someone provide a good answer including some tech differences, some pros and cons for each distribution? I want to make the right choice and choose the right distro for my needs (running a cluster ...
0
votes
1answer
18 views

How to hold specific package version?

I have Percona XtraDB Cluster 5.6 installed on my Ubuntu server. Recently, when i tried to update my system using apt i see some new version of percona, but with an older version. The following ...
0
votes
0answers
5 views

Ubuntu DHCP-RELAY Error

I have a Ubuntu 14.04 server running as a router (4 NICs with IP forwarding turned on). The routing/forwarding component is working fine. However, I now wish to implement a DHCP-Relay/IP helper so I ...
0
votes
1answer
19 views

Ubuntu - mounting partitions as read only

I have a server which has probably been shut down one time too many as a result of power cuts. Now when I log in, it's mounted every partition I can see as read only. I've looked up the solution, ...
-2
votes
0answers
18 views

Locating MailForwarding Settings [closed]

tl;dr Where can I find settings that are correctly redirecting emails? Summary While setting up my first AWS EC2 instance I was a little wary about configuring mail so I did "XYZ". Now that I have ...
0
votes
0answers
10 views

Using sar to produce data to graph cpu utilization

I am looking into charting cpu utilisation and have gone down the path of sar within the sysstat package as it provides a clear idle value for all processors/cores grouped together. sar -u 3 10 # Run ...
0
votes
0answers
9 views

How to create multiple folders for nginx_upload_module?

I've just setup nginx_module_upload for uploading images. As official documentation describes upload_store syntax: upload_store [level 1 [level 2 ]... ] default: none context: ...
1
vote
1answer
22 views

Ipvsadm to monitor connections on a load balancer

I am working on to set up Haproxy on a load balancer with two backend web servers in the first period. The problem I am facing is to monitor number of connections to each of my web servers. I have ...
0
votes
0answers
13 views

How to diagnose RAID drive showing incorrect size

I have a software RAID1 array on Ubuntu 14.04. Each drive has 1TB, for a logical size of 500GB. Suddenly, one drive started reporting it only had 4.1GB and I can no longer run any SMART self tests on ...
0
votes
1answer
24 views

How to fix destroyed software RAID after Ubuntu upgrade

I upgraded a headless server from Ubuntu 12 to 14 following the built-in do-release-upgrade script. It seemed to run fine until I rebooted, and was left with an unusable machine. After the grub ...
0
votes
1answer
27 views

Custom Live Boot PXE ISO Script

Currently I am using an open source PC auditing software called Open-Audit to audit PCs my company receives off lease from school districts. The software uses snmap to pull hardware information over a ...
-1
votes
0answers
18 views

Setting CCTL value of hard disk when using Raid1 [closed]

I've DIYed a server and use two Toshiba DT01ACA300 (3TB SATA) to run Raid 1 via mdadm. I heard that in order to reduce the chance of hard disk rebuild, I should set enable the CCTL of my hard disk, ...
1
vote
0answers
6 views

Benchgraph httpref - cannot execute binary file

I am trying to make graph of an httperf file with benchgraph (http://www.uprb.edu/profesor/jsola/benchgraph/) When I run the command: benchgraph --ff txt --fn httperf --exporter httperf I get bash: ...
1
vote
1answer
59 views

NTP can't synchronise

Okay so I tried syncing a windows clients clock to the ubuntu ntp server i just set up, but it gets a time out, when trying. So I went on the ubuntu server and looked at syslog: Apr 10 13:15:01 ...
0
votes
1answer
63 views

Nginx Reverse Proxy w/ SSL - 403 Error

I've been trying to install Nginx as a reverse proxy for the past couple of days, but I can't get it to work. Everytime I load a page on my site, or even a file on my server, it returns a 403 ...
0
votes
1answer
17 views

Undefined php function http_post_data on Ubuntu server

Added the following under Dynamic Extensions in both php.ini's (Apache's, and the normal one found with: sudo updatedb && locate php.ini) extension=raphf.so extension=propro.so ...
0
votes
0answers
21 views

Import outdated MySQL dump using console

I have a mysql dump file created by outdated MySQL version. I have no access to that server (console). If i use this command on my current server: mysql -u user -p dbname < dump.sql I get this ...
0
votes
0answers
17 views

Striped Ubuntu box - minimal memory usage

I am currently building applications with Go, and since I can deploy binaries, there is no need to install servers, databases and whatnot. My question is: How much can I squeeze Ubuntu so as to have ...
-1
votes
0answers
40 views

Is Teamviewer on Ubuntu installed wrong - got ID 0

I installed temviewer on remote ubuntu machine throught ssh. When I check it status it says status running. Trying to get ID sudo teamviewer --info print version, status, id TeamViewer ...
0
votes
0answers
21 views

Can not ping from Ubuntu VM but can to

I've got an XenServer with an pfsense Router Running on it. There are the following Networks: Lan: 10.0.0.0/24 DMZ: 10.0.1.0/24 Secure: 10.0.2.0/24 WAN: xxx I got 2 Windows VMs inside LAN: ...
2
votes
1answer
53 views

Postfix won't forward email using virtual_alias_domains and virtual_alias_maps

Here is what i did: apt-get install postfix picked "internet mail" added a file "virtual" and appended a list with emails and emails (see below for sample) when changing postfix, i always updated ...
-1
votes
2answers
30 views

How to configure network interfaces for three NIC cards all on three different subnets

I am setting up a cloud environment on Ubuntu and I am running into an interesting problem. Out of the box Ubuntu (all linux really) doesn't allow you to specify more than one gateway in ...
-1
votes
1answer
19 views

Need help importing data to new SQL server from MySQL folder

My hard drive crashed, and can no longer write, but it can still read. Because of this, I was unable to export my SQL database to an .sql file for later importing. I can still access the drive, and ...
1
vote
1answer
28 views

Forcing a user to use swap space after certain memory usage (using limits.conf?)

I have a backend app that is being used internally by developers hosted on our server, however, the app unfortunately requires the use of Passenger and Ruby, both of which are very memory-hungry. I ...
1
vote
1answer
28 views

RSync incremental backups, backing files that haven't changed. Does file access time cause a re-backup? [duplicate]

I backup my LAMP server using RSync over SSH. Currently, it's on an hourly incremental schedule. From a 14GB full backup, it's backing up a further 15~MB hourly. Looking at the files it's backing ...
0
votes
1answer
54 views

Bind9 DNS reverse lookup fail

Okay so I got a problem, that my reverse lookup fail on my bind9 dns #nslookup 172.16.0.179 Server: 127.0.1.1 Address: 127.0.1.1#53 ** server can't find 179.0.16.172.in-addr.arpa: NXDOMAIN ...
0
votes
0answers
3 views

Cannot get LAMP stack working on Ubuntu 14.04.2 LTS [migrated]

I have Ubuntu 14.04.2 installed as a virtual machine (VirtualBox) in my MacBook Pro. I am trying to get my AMP (Apache, MySQL and PHP) stack to run a web server, but I just cant get not even the ...
0
votes
0answers
14 views

vsftpd: allow access to arbitrary directory of FS

I've set up vsftpd on Ubuntu 14.04/server for backing up different kinds of files. But we using a complicated scheme: pseudo-users uploads the data (database archives, networking equipment configs ...
0
votes
2answers
45 views

Ubuntu Iptables Dual Wan - Forward wan 1 & 2 to an internal server

I'm having problems configuring iptables rules on a double wan setup. The OS is Ubuntu 12.04 LTS. I have 2 Wan connections, both with static IP. Wan-1 is on eth2, Wan-2 is on eth4. I want both of ...
0
votes
0answers
36 views

why django project failed loading? - django + nginx + uwsgi

I am trying to deploy a Django project through Nginx and uWSGI. If I run the project manually running python manage.py runserver :8000 it works fine, so the project itself is not the problem I guess. ...
-1
votes
2answers
49 views

How do I find out if a uid exists?

I have added a new user in Ubuntu using puppet with a hard coded uid of 10017. The uids must be the same across workstations so that when user data is restored everything lines up. Now I find out ...
5
votes
1answer
52 views

Can't install PM2 services via Ansible on an Ubuntu EC2 instance

I'm using Ansible to create a pm2 service on a EC2 / Ubuntu instance. Below is the script. When I run it, PM2 is installed and the service is enabled. When I run pm2 list, I don't the see the ...