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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How to go about traffic forwarding

There's a server (node A), acting as the end point of a GRE tunnel. Also there is an Ubuntu server (node B, it sees Internet) acting as the termination point for the GRE tunnel. Some devices (nodes ...
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3answers
2k views

Reconnect ssh session when disconnected without screen

I initiated 'do-release-upgrade' over ssh, and then my (client) network connection died. How can I reconnect to the session which is performing this command?
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1answer
298 views

~bash: command not found to any command after server restart!

After server restart, none of the command works. Please help. development@q1:~$ ls -bash: ls: command not found development@q1:~$ ECHO $PATH -bash: ECHO: command not found development@q1:~$ echo ...
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2answers
123 views

apt-get upgrade and update will break an old Rails app with dependencies?

I am running a Rails 2.3.8 app on my server, with other depended gems, which usually require old version instead of the new version which supports Rails 3. I have not been running apt-get update and ...
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1answer
63 views

installing control panel on vps query [closed]

Bit of a rookie question here(possibly stupid), something I'm just not fully sure off. I have recently acquired my first VPS(ubuntu) and am looking to install a control panel(webmin). I'm just ...
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3answers
858 views

Linux boot: md raid FS not ready (sometimes)

Using Ubuntu 11.04 (latest patched) I have 5 RAID-1 file systems that are automatically assembled during the boot process (Note: none of the system FS /, /usr... are raid, only user FSes). Once in ...
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4answers
6k views

Ubuntu 11.04 Server Crashing - failed command: READ FPDMA QUEUED

I have a new Ubuntu Server (11.04) that keeps crashing, especially during heavy disk I/O (like making a backup). It's drives are configures as a RAID 10 with 4 1TB Western Digital Caviar Black Hard ...
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0answers
685 views

Getting ipsec-tools to work between Ubuntu Lucid hosts

I have two hosts, one is Charity with IP 67.207.128.184, the other is Hope with IP 67.207.130.204. I've installed the ipsec-tools package on each host. I have not installed racoon on either host. ...
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1answer
868 views

setting up ufw for a website, I want to to disallow everything except ssh, e-mail, and http

I have read the basic instructions here: https://help.ubuntu.com/community/UFW I want to sudo ufw default deny and then sudo ufw allow ssh sudo ufw allow smtp sudo ufw allow www sudo ufw allow ...
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4answers
343 views

Ubuntu troubleshooting

I have a computer which keeps becoming unreachable, and a restart fixes the problem. It's under somewhat heavy load (high cpu, and high ram usage), but appears for the most part stable. What's a good ...
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2answers
776 views

Upgrade the Ubuntu puppet package within kickstart process

My Ubuntu based kickstart-host is almost working like it should, serving Ubuntu 10.04 (both i386 & amd64) and CentOS 5.6 to new (VMware-)hosts. One of the things that bothers me is that Ubuntu ...
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1answer
971 views

SWAP CRITICAL - 100% free (0 MB out of 0 MB)?

ANy ideas how to address this issue ....I am on ubuntu 10.04 on amazon ec2 here is the image
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1answer
237 views

How can I find a list of installed aptitude repositories on Ubuntu?

I'm running this command when setting up new ubuntu servers sudo add-apt-repository ppa:nginx/stable Is there a command I can run that will show that I've run this command and added ppa:nginx/stable ...
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2answers
959 views

what is causing the server to go down?

I have an aws ec2 server Ubuntu 10.04.2 LTS and every week it keeps shutting down for whatever reason I have no idea. I go in the aws console and reboot the server and all is well. What can be causing ...
2
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3answers
3k views

Allow local users to access /var/www folder in vsftpd

I have successfully installed the vsftpd. and it is live. but i get following error: Response: 500 OOPS: cannot change directory:/home/sovit what i want to do is direct all local users of the ...
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2answers
229 views

Ubuntu, mail servers and MX records

Some background: I have set up an Ubuntu cloud server on Rackspace where I host two domains, say, www.domain1.co.uk and www.domain2.co.uk. Both domains are hosted on the same cloud server. I ...
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2answers
3k views

How to grant sudo rights only to specific script files?

I would like a user to have sudo rights (without password check) to a couple of shell scripts under a specific directory (in my case, /usr/local/tomcat7/bin), and to nowhere else. What's the simplest ...
2
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1answer
91 views

Ubuntu compare original package and installed parameters

I'd like to compare the actual config files for, let's say, Apache and the ones provided in the original package. The purpose is to have a list of modifications since initial installation because I ...
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1answer
1k views

how can i control where pci devices are mounted?

I have a machine with multiple capture cards in PCI express slots. For ease of trouble shooting stuff, I would like for the devices to appear on the OS in order of their physical position when I'm ...
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2answers
3k views

PTY allocation request failed on channel 0

I recently ran into the following problem when trying to ssh into my Ubuntu 11.04 server: ssh greg@site.com PTY allocation request failed on channel 0 I don't know for sure, but I ...
16
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3answers
92k views

How to write ISO image to usb memory stick from linux command-line?

I'm having trouble figuring out how I would write an ISO disk image to a USB flash memory device from the command line in Ubuntu. I have the Startup Disk Creator utility, but I need to be able to ...
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3answers
2k views

Apache making entire system unresponsive

The system is running ubuntu 10.04, running Apache/2.2.14 (Ubuntu) It happened today where I noticed the server was extremely unresponsive (took 5+ minutes to log into SSH). Upon viewing the system ...
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1answer
136 views

How to enable both IP and virtual name access in Apache 2.2 in Ubuntu?

I am trying to access my server as http://somedomain.com http://anotherdomain.com http://serverip With NameVirutalHost configuration, the domain names are redirected to their respective folders. ...
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1answer
574 views

DNS (Bind9) Behind Firewall

Im running ubuntu 10.04 and Bind9 behind a firewall. I have forwarded Ports 53 (UDP/TCP) to the local server (192.168.0.4). The DNS system seems to be hit-and-miss when the firewall is enabled, ...
2
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1answer
504 views

Enable ACL for eCryptFS mounted home directory

I am running Ubuntu 11.04 with the "encrypt home directory" feature. This uses eCryptFS to encrypt and mount my home directory. Now I need to enable ACL for this mount but since it's not configured ...
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1answer
287 views

Ubuntu 10 repositories help

Looks like not all the files on my repositories any more as you see below. Failed to fetch ...
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2answers
712 views

RSA fingerprint changed after moving EBS and EIP to new instance

I'm running ubuntu on an EBS-backed EC2 instance. In order to change the security group of my instance, I followed the instructions here for moving the ebs volumes to a new instance. Then I ...
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0answers
2k views

How does one configure networking on OpenStack?

I've been playing with Openstack, but I can't get the networking to function correctly. I'm just trying to get a single server going. I can bring up instances, but they get stuck at the BIOS loading ...
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2answers
916 views

Server Dropping all Connections Randomly and Packet Loss

I just built a server using a Supermicro X8DAH+-F board and running Ubuntu 10.04 Server 64bit. This has the Intel 82576 dual port controller (one port is disabled). Since this is a server, remote ...
3
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1answer
108 views

Ubuntu: Best structure for local repositories

We have a small network at our company with 7 Ubuntu computers and one central Ubuntu server (where we have the files we all work on). Currently, all users manage and update their own computer. But we ...
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2answers
740 views

php ugrade error on ubuntu: packages have unmet dependencies

if I try to upgrade php on my vps with apt-get install php5-cli i get this error: The following packages have unmet dependencies: php5-cli: Depends: libc6 (>= 2.11) but 2.6.1-1ubuntu10 is to ...
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2answers
3k views

Need to install sun-java5-jdk on ubuntu 11.04

I've found debian package on http://packages.ubuntu.com/hardy/devel/sun-java5-jdk It depends on sun-java5-jre. So I'm going to http://packages.ubuntu.com/hardy/sun-java5-jre to install it first. But ...
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1answer
547 views

Non-working ACL configuration

I want both my users 'tobias' and 'www-data' to be able to read and write to a specific directory. To that end I have chowned it to tobias:www-data, added tobias to the www-data group and added ...
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2answers
154 views

Ubuntu server on Active Directory network (sans authentication)…where to begin?

I am attempting to place an Ubuntu server (11.04) on our Class C Active Directory (Server 2003 R2) network. I want this server to have a static IP, which I've selected from outside the DHCP pool, but ...
2
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1answer
576 views

Is there a config file for ubuntu server like /etc /ethers to config the mac-ip bind?

i can't find /etc/ethers in ubuntu server:< i want save something like "sudo arp -s someipaddress macaddress" so i don't need to set it again after reboot
0
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1answer
702 views

Mounting an existing partition of an unmounted disk

I ran the fdisk -l command to show me all the disks and partitions. Here's the output: Disk /dev/sda: 1000.2 GB, 1000204886016 bytes 255 heads, 63 sectors/track, 121601 cylinders Units = cylinders of ...
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2answers
736 views

Hyper-V Ubuntu Networking Problems Copying Large Amounts of Data

I am trying to copy a large amount (about 50 GB) of data over my network from a Hyper-V-hosted virtual machine running Ubuntu 11.04 (Natty Narwhal) to another (non-virtual) Ubuntu host that I plan to ...
0
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1answer
489 views

Internal portforwarding

I am currently working on a webapplication which uses node.js and socket.io. Socket.io need to start a small tcp on port 843 for delivering crossdomain.xml's for FlashPlayers socket connections. As ...
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1answer
611 views

repquota for single user

My users on ubuntu server has quota enabled. And I can list current information with repquota. This prints information for all users. Is it possible to request quota information for particular user? ...
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1answer
259 views

Help with MPICH2 installation on Ubuntu Server

I'm trying to install MPICH2 on a ubuntu server installation (7.04 fiesty fawn). This is for a Beowulf cluster. I have so far been unable to install it for two reasons. 1) under the root account: ...
0
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1answer
83 views

Ubuntu Bind9 Zones

I have a quick question. I just setup DNS on one of our Ubuntu servers using Bind9. Now my question is do we need to setup a "zone" for every domain name? Or is there another option? What are the best ...
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2answers
365 views

apt-get update failes to update

I am using Ubuntu 11.04 desktop edition mahcine. This machine is behind proxy server and content filter. I tried adding the following parameter in /etc/apt/apt.conf but it was not working after adding ...
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2answers
222 views

Apache Mod_Rewrite: Aliases and CGI

I am trying to get Apache to run a cgi executable in my "project" directories. It should respond to HTTP requests at: localhost/packages localhost/packages/ However, it should not respond to http ...
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2answers
90 views

Where is this port being forwarded?

I'm working with a Tomcat application that I inherited. The server has port 80 forwarding to 8080 to mask the default port. When I type iptables --list I get Chain INPUT (policy ACCEPT) target ...
2
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2answers
1k views

Troubles cloning from a git / gitolite / git-web / git-daemon server (Fatal: 'gitolite-admin.git' does not appear to be a git repository)

Following this tutorial on installing git, gitolite, git-daemon, and git-web I have successfully completed the entire tutorial and actually added projects gitolite; they show up on git web when I go ...
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1answer
417 views

SSH only accepts connections shortly after boot

When I tried to log into my remote Ubuntu server today, I got: ssh: connect to host <ip> port 22: Connection refused So I rebooted the server, thinking sshd might have crashed. After the ...
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4answers
205 views

Read files that are owned by www-data

I have a website that writes files when necessary. Those files are owned by www-data. I also have my user, which executes an application to gather information from those files. It is written in ...
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2answers
3k views

Apply ulimit globally on Ubuntu

I need to apply "ulimit -s 256" to any system thread. Is there any way to achieve this under Ubuntu Server?
2
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1answer
363 views

base64 encoded emails

A problem: Email from my server comes like this: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: base64 ...
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2answers
81 views

Setup email@mydomain.com on LAMP server

I have a linode running Ubuntu 10.04, Apache2.2, etc... Late last night, finalizing some business cards I decided it would look more profesh if the email was info@mydomain.com rather than a gmail ...