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
1answer
1k views

How to preserve xrdp session on ubuntu 14.04?

I installed xrdp on my ubuntu 14.04 machine using the below commands. I can now remote desktop from my windows machine easily into my ubuntu machine. However, what I notice is when I close the ...
0
votes
1answer
23 views

Segmentation fault diagnoses

I am trying to diagnose a segmentation fault issue that started to occur after upgrading to Ubuntu 14.04 (32 bit). I am running a TSM client 6.2.5-4 which worked fine up to the upgrade. I tried to ...
0
votes
1answer
16 views

How to reduce AWS EBS root volume size?

Enlarging an EC2 instance is easy like a breath (for instance, create an AMI, launch an instance from it and then change the storage size). But reducing it becomes more difficult. I’d like to reduce ...
2
votes
0answers
22 views

Icinga - Very high check latency in distributed environment

I have a distributed Icinga setup set up as follows: CENTRAL Receives passive check results only DISTRIBUTED A 227 hosts 835 services DISTRIBUTED B 67 hosts 243 ...
-2
votes
0answers
20 views

nginx not starting after password reset. 502 gateway

I reset my digitalocean droplet password just now. Now I tried "service nginx status" and it says its not running. The error in the logs was: [emerg] 3956#0: duplicate upstream "app_server" in ...
1
vote
1answer
654 views

Random Ubuntu server network disconnects

After installing Ubuntu Server 10.04.1 on a new x86_64 kvm instance (Debian 6.0 hosted) I'm getting -apparently- ramdon disconnects from the server. Read from remote host myserver: Connection ...
1
vote
4answers
3k views

Can Docker help me install Oracle 11g database on Ubuntu?

We are struggling with a common problem of trying to provide an Oracle 11g instance for our developers to test with. Our standard build agents are based on Ubuntu 12.04 but Oracle supports only RedHat ...
0
votes
0answers
5 views

auditd execve arguments that looks like encoded data

I'm logging all execve's in a sort of honey pot box and as such I try to make sense of the commands. There's many many of these, all with 'bash -c' and some long alpha numerical value not enclosed in ...
-2
votes
0answers
23 views

Accessing a web site on a VM

I am trying to use a VM to allow me and some other people in the company to test-drive changes to a Magento store. The VM is out of my control (mostly) and is hosted on a Windows Server box on our ...
3
votes
1answer
2k views

OpenVPN: Not all DNS entries get pushed to clients from server. (dnsmasq)

I have been trying to find a solution to this problem, but have found no answer so far, so I hope you guys can help me out. I have a server running Ubuntu 10.04, which has a static IP address and an ...
3
votes
2answers
5k views

Login error with Remote Desktop to Ubuntu server

I use Ubuntu Cloud Guest account and install xrdp (sudo apt-get install xrdp) then I use Remote Desktop Connection of Windows to remote it. But on login step I always get this error after I enter ...
-5
votes
0answers
34 views

What System Does Facebook Use To Manage It Files? [on hold]

How Does Facebook Manage It System ? What System Does It Use To Manage It Files , Database , etc.. ?
2
votes
0answers
38 views

Can't run binary executable on Ubuntu 12.04

I get the following error: ./cataclysm: command not found when trying to run this executable on a Linux server over SSH. when I run ldd cataclysm, I get: linux-gate.so.1 => (0xf7759000) ...
0
votes
0answers
10 views

how to change MTU inside docker container which is running with ubuntu 14.04 and also on host machine with ubuntu 14.04?

I want to change MTU(Maximum Transmission Unit) inside docker which is running on ubuntu 14.04. also docker container running with ubuntu 14.04. The problem is that its docker0 interface on host os ...
1
vote
1answer
342 views

error compling php5 with gd for ubuntu 12.04

I need the imageantialias() to work on the server I built. I have complied PHP before but for some reason I can't do it any more. I ran these steps to try: apt-get source php5 apt-get build-dep ...
0
votes
0answers
7 views

Ubuntu GUI on Ec2 AWS via VNC or XRDP from MacOSX o [on hold]

I have red some many things about how to remote desktop on your Ubuntu instance. 1) Please can someone tell me as of now what is the most recommended way: VNC or RDP? Does it make a difference to ...
0
votes
2answers
24 views

Hostname not changing (Ubuntu 14.04)

When I set up a VPS, I set the name to "main" so both my /etc/hosts and /etc/hostnames files had one entry (that being "main"). So I set up root ssh access and type "hostname" and it gives me "main". ...
0
votes
1answer
19 views

Active Directory users authentication on Ubuntu server

I need the simplest way to authenticate Active Directory users on Ubuntu Server (at login). I am trying with libnss-ldap, but it only works with plain LDAP server (like SLAPD) but now Active ...
0
votes
1answer
9 views

How to add new virtual users to an existing VSFTPD virtual user database in DB4 format?

I have setup and configured a VSFTPD server on a Ubuntu 14.04 server that is working as intended. For authentication, I setup virtual users via a PAM passwd file in DB4 format using methodology ...
-1
votes
0answers
14 views

EMFILE - too many open files solution? [duplicate]

I'm getting this error, my server has a lot of visitor now. My Vps is 4 Gb ram with 4 Cpu. Should I move to bigger server for solution? Because ulimit -n 10000 not working. I'm serving a basic ...
6
votes
1answer
1k 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 ...
0
votes
0answers
13 views

What steps should I take if jetty is fails to start, no hints in logs?

So I have a war file which is sucessfully launched under jetty in many environments except specific ubuntu machine. On this machine nothing happens, nothing at all. My first thought was I have issues ...
1
vote
1answer
2k views

Unknown SSL protocol error in connection to rubygems.org:443 from Ubuntu

I ran into this problem on two Ubuntu 12.04 instances using kernel 3.2.0-54 after upgrading to the latest OpenSSL with the Heartbleed fix. Connections to some servers over HTTPS that never timed out ...
0
votes
2answers
905 views

LDAP authentication apache 2.2 error 500

This is my LDAP configuration in Apache2.2.x Order deny,allow AuthType Basic AuthName "Test" AuthBasicProvider ldap AuthLDAPURL "ldap://dc1.domain.com:389/DC=domain,DC=com?sAMAccountName" ...
6
votes
1answer
1k views

xen:balloon: reserve_additional_memory: add_memory() failed: -17

We're running Ubuntu 14.04 on an EC2 virtual machine. I've been seeing a lot of these errors in our kernel log: [ 704.032085] xen:balloon: reserve_additional_memory: add_memory() failed: -17 [ ...
1
vote
1answer
44 views

How to setup 3 networks on a 2 NICs Ubuntu box?

I need to configure 3 networks on my Ubuntu machine (OpenStack Network node) The /etc/network/interfaces I have is: # interfaces(5) file used by ifup(8) and ifdown(8) auto lo iface lo inet ...
0
votes
1answer
16 views

How do I get boto to work with port 443 being prerouted to another port?

My title may be poorly worded, but I'll try to get the backstory straight: I have Ubuntu instances with clusters of Docker containers all hosting web servers In order to appease firewalls we want to ...
0
votes
0answers
14 views

Restrict user changing xscreensaver settings

I would like to know any solutions people came up with restricting a user from changing a system wide configuration of xscreensaver. Part of my job is managing systems which have a requirement that ...
1
vote
1answer
1k views

xen Dom0 network setup on ubuntu 12.04.1 LTS

I read a lot of tutorials (or at least try to be) but none is able to explain well how to configure networks for xen host. my Dom0 has two interfaces eth0 (real interfaces) and virbr0 (I guess was ...
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 ...
9
votes
3answers
7k views

How can I install Apache with a specific version?

Because of Ubuntu updating, I made the mistake to upgrade Apache 2.2 to 2.4—many things went wrong. I have no idea how to specify the version after apt-get remove apache2. apt-get install apache2 ...
0
votes
0answers
11 views

Can't boot after intrerrupting do-release-upgrade (Mount failed for selinuxfs on /sys/fs/selinux)

From a ssh session I ran: sudo apt-get install update-manager-core sudo do-release-upgrade I went to read something else and when I returned to my ssh session, it wasn't responsive. I'm presuming ...
0
votes
0answers
29 views

How to find what caused apache and proftpd to go down [on hold]

I am new to Linux. I am running Ubuntu 12.04.5 LTS in my new server. My problem is Apache (2.2.22) and proftpd stop working almost every other day and come back online after 5 to 10 minutes. Where ...
0
votes
0answers
14 views

start-stop-daemon not working as expected

I can't figure out why start-stop-daemon is not running the script below. What am I doing wrong? start-stop-daemon reports that it will start node when using the --test flag, but when I actually run ...
0
votes
2answers
3k views

How to completly remove postgresql from Ubuntu 13.04

I've tried sudo apt-get purge postgresql sudo apt-get autoremove postgresql and sudo apt-get --purge remove postgresql But after this dpkg -l | grep postgres gives me that: pi postgresql-9.1 ...
1
vote
1answer
2k views

Move ISPConfig 3 site from one server to another [on hold]

I feel this must be something other people have had to do before me but I can't find anything useful anywhere on this topic. I've inherited an ISPConfig 3 server with a number of sites spread across 2 ...
1
vote
1answer
720 views

Changing Nginx server location for ISPConfig [on hold]

I installed ISPConfig on Ubuntu. It was configured for one NGinx install but I had to move to a different Nginx install. Now how can I make ISPConfig aware of this new location and forget about the ...
0
votes
1answer
328 views

How to have separate server configs for port 80 and 443 with ISPConfig [on hold]

I'm using ISPConfig on Ubuntu. I want to have separate configs for port 80 and 443 but if I try to add a second server in ISPConfig it won't let me b/c I already have one of the same name. And ...
-2
votes
1answer
325 views

ISPConfig installation doesn't work [closed]

My ISPConfig 3 setup (3.0.4.6) is behaving strange. First I get a load of sh: 1: /which: not found sh: 1: /which: not found sh: 1: /which: not found sh: 1: /which: not found sh: 1: /which: not found ...
0
votes
2answers
5k views

ISPConfig shows the 403 forbidden [on hold]

That's what i receive when opening the browser Forbidden You don't have permission to access / on this server. and there is nothing meaningful in the logs " 403 179 "-" "Mozilla/5.0 ...
0
votes
0answers
17 views

Mount the other half of instance store volume

I have a running c3.xlarge EC2 instance on AWS. As listed in http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/InstanceStorage.html#StorageOnInstanceTypes , it should provide 2 x 40GB SSD instance ...
0
votes
1answer
984 views

MySQL port 3306 became filtered when configured with Keepalived on Ubuntu server 12.04 lts

I'm configuring two load balancer (lb01 & lb02) with keepalived for my two mysql server (db01 & db02) with standard port 3306. There is virtual ip address (192.168.205.10) to access it also ...
3
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 ...
1
vote
2answers
4k views

How to fix “TCP/IP Sequence Prediction Blind Reset Spoofing DoS”

Just finished a Nessus scan and the only thing that came back was "TCP/IP Sequence Prediction Blind Reset Spoofing DoS" - It may be possible to send spoofed RST packets to the remote system. ...
0
votes
1answer
20 views

Can't add Nodes to Percona XtraDB cluster

In my case, I have two nodes in cluster, but when I use $service mysql bootstrap-pxc to start XtraDB cluster, I found nodes were not added to cluster. I also check /var/log/mysql/error.log, but no ...
5
votes
4answers
11k views

mysql: Cannot load from mysql.proc. The table is probably corrupted

Mysql was started: /usr/bin/mysqld_safe --datadir=/srv/mysql/myDB --log-error=/srv/mysql/logs/mysqld-myDB.log --pid-file=/srv/mysql/pids/mysqld-myDB.pid --user=mysql ...
1
vote
1answer
3k views

proftpd initial directory for each user

After successfully setting up proftpd server, i want to add initial directory for each users, i have 2 user, webadmin that can access all folder and upload that can only access upload folder ... # ...
0
votes
1answer
27 views

LDAP communication between two local server

I want to make my LDAP Port accessible inside my private network. Is it possible? Operating System : Ubuntu 14.04 x64 My LDPA Server configuration: eth1 Link encap:Ethernet HWaddr ...
0
votes
1answer
944 views

.htaccess not being loaded in Ubuntu 14.04 (Apache 2.4.7)

I'm trying to use the .htaccess file in Ubuntu 14.04 (Apache 2.4.7). Here is what my .htaccess looks like # 1 YEAR <FilesMatch "\.(ico|svg|woff|eot|ttf)$"> Header set Cache-Control ...
2
votes
4answers
5k views

Ubuntu 14.04 System Logging

I've set up an Ubuntu 14.04 Server (from an Ubuntu 12.04 Server) but today I wanted to look in the auth.log but this file is not used. It seems that ´syslog´ was deleted. How does Ubuntu 14.04 log? I ...