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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Trying to test postfix so I can get nagios's email feature working

Hello I am trying to get postfix set up and working so I can get Nagios to email me whenever a server goes down, raid fails, etc. The machine I have up is an Ubuntu server running in a virtual ...
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2answers
1k views

Linux xen directly boot windows domu?

I have the following situation: got a new notebook with Windows7 pre-installed (sda1 with boot partition, actual OS in sda2), one physical disk (sda) created an extended partition (sda3), inside ...
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0answers
10 views

Mysql Server On Ubuntu Linux Stops Itself [duplicate]

I just migrated my Wordpress sites to a VPS and I'm just a little over my head in system admin problems. For some reason MySQL is stopping itself. Checking the logs it seems to be running out of ...
1
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1answer
38 views

How to disable ip_forward for Ubuntu server

This is the state of my server right after booting: root@vzu01-ubuntu:~# cat /proc/sys/net/ipv4/ip_forward 1 There is no other enabled ip_forward configuration: root@vzu01-ubuntu:~# grep -r ...
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0answers
10 views

Ubuntu 14.04 Can Access LAN but not Internet (Verizon Fios)

I have been struggling with this for quite some time. I am away from home a lot and have an Ubuntu 14.04 server (SSH, HTTP, Transmission, Plex) running with the proper ports forwarded through my ...
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4answers
6k views

How can I set a search domain (and other resolv.conf parameters) in Ubuntu?

I like Ubuntu's NetworkManager -- it does a great job keeping track of all my WiFi parameters and passwords. However, when I actually plug in an Ethernet cable, the frustration begins. When hooked up ...
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1answer
26 views

Lost my key file when I generated the csr

This is the first time for me dealing with ssl. I have created a csr file, but I lost the key file in this generation. The certificate was issued and I got all the crt files. Now I want to install it ...
2
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1answer
1k views

Samba 4 (Ubuntu) Administration (Active Directory) via RSAT using Windows 7 error

I want to administrate Samba 4 (Active Directory) via RSAT (Remote Server Administration Tools) using Windows 7. I have installed the RSAT and opened the "Active Directory Computers and Users" tool in ...
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2answers
2k views

Siege: descriptor table full sock.c:119: Too many open files

I am trying to make a stress test in my own server using siege with the following command: $ siege -c 500 myweb.com/somefile.php But I get this error: [error] descriptor table full sock.c:119: Too ...
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0answers
13 views

Static ips aren´t working in ubuntu virtual machines

I want to set a static ip to a ubuntu vm client and other static ip to other ubuntu vm server. Im doing this like this: sudo gedit /etc/network/interfaces Then in the ubuntu vm client file: auto ...
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1answer
17 views

Nagios NRPE: unable to read output for custom check

I have written a custom ruby script to check disk usage for each volume on an ubuntu server. The servers are controlled by puppet and the nagios system has been running for years and contains a number ...
0
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1answer
10 views

Why does uploading files via FTP set permissions to 775 / 664 by default?

I'm using FileZilla FTP client, and when I upload new files to the server it's creating directories with 775 permissions and files with 664 by default. Is there a way I can change either the ...
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2answers
2k views

Using Ubuntu Karmic as an L2TP Client for VPN

I'm trying to connect to a VPN service over L2TP using Karmic as a client and it's not working. The only details I have are the remote IP address, username & password, and a shared secret string; ...
1
vote
1answer
24 views

Cannot connect to mongodb instance on Azure

I have setup a mongodb server on Azure (on Ubuntu 15.04). The instance works and I can connect to mongodb when ssh'd into the machine by simply using 'mongo'. However, when I try to connect from my ...
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0answers
12 views

Ubuntu 15.10 Server; W: Possible missing firmware /lib/firmware/ast_dp501_fw.bin for module ast

I'm running Ubuntu 15.10 server on a Asrock E3C226D2I board. When I get a kernel update or run update-initramfs -u I get a warning about missing firmware: root@fileserver:~# update-initramfs -u ...
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2answers
2k views

ProFTPd server on Ubuntu getting access denied message when successfully authenticated?

I have a Ubuntu box with a ProFTPD 1.3.4a Server, when I try to log in via my FTP Client I cannot do anything as it does not allow me to list directories; I have tried logging in as root and as a ...
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0answers
21 views

IBM System x3850 M2 Ubuntu Server Install

I just purchased two second-hand IBM System x3850 M2 rack servers, and I am a real noob to the subject. As such, I cannot tell if there is a major difference between x3850 M2 and x3850 X5. If there ...
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1answer
3k views

Recover data from ubuntu encrypted drive (LUKS)

I had a Host with Ubuntu 12.10 installed, and the entire harddrive was encrypted (with LUKS it appears), I remember the passphrase, but I have trouble to "open it". I am now on a beta version of ...
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8answers
8k views

How to view all ssl certificates in a bundle?

I have a certificate bundle .crt file. doing openssl x509 -in bundle.crt -text -noout only shows the root certificate. how do i see all the other certificates?
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0answers
10 views

Ubuntu PPTP-server behind the router [on hold]

I'm a newbie to servers configurations. Please advice in building of correct network scheme. Background I have a router box (192.168.1.1) which is make connection to my internet provider and works ...
0
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1answer
59 views

Missing VM in old portal - To Reset SSH password for Linux Ubuntu in Azure

I built a Ubuntu server in Azure, stopped and started the server and the IP changed which may have caused the password to reset?! I cannot seem to login via SSH anymore as password seems to not work. ...
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0answers
7 views

pppd with empty output

I'm trying to install PPTP VPN in an OpenVZ vm. I get output looks something like this: # pppd ~?}#?!}!}!} }4}"}&} } } } }%}&u<nr}'}"}(}"??~~?}#?!}!}!} }4}"}&} } } } ...
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1answer
15 views

HTTPS not working on Tomcat 7

I am trying to add ssl configuration in tomcat 7 in ubuntu 11.10 but it is not working and there are no errors in logs. I added in server.xml this: <Connector port="8443" protocol="HTTP/1.1" ...
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1answer
31 views

Mail server setup on DigitalOcean with CloudFlare

I'm trying to make my own mail server. The problem is, it doesn't work at all. I've tried to install postfix, wich didn't work (Couldn't receive mails) and then I tried Exim, didn't work too... I'm ...
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0answers
32 views

Multiple IPv6 addresses added to interface, now IPv6 not working on my server [duplicate]

I got /64 IPv6 block from my server provider. When I add few IPv6 addresses (maybe 10 or 20) to network interface. Everything works fine about IPv6 network. When I'm added above 500+ IPv6 addresses ...
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0answers
11 views

HTTPS tomcat 7 working only with curl not in browser

I have added in server.xml: <Connector port="8081" protocol="HTTP/1.1" SSLEnabled="true" maxHttpHeaderSize="8192" maxThreads="150" minSpareThreads="25" ...
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2answers
2k views

Installing Windows 2012 KVM Guest on Ubuntu 14.10 - unable to VNC into guest

I have a Ubuntu 14.10 (x64) host, and I am using KVM to setup a Windows 2012 R2 guest VM on it. I am using the virt-install command to set things up. I have setup a bridge network in ...
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2answers
36 views

$0 empty in script when run by cronjob

I am trying to setup automated backups for an AWS EBS volume and using https://github.com/colinbjohnson/aws-missing-tools/tree/master/ec2-automate-backup to do so. The backup script used is the ...
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0answers
16 views

Can CentOS user desktops operate on a Debian/Ubuntu network? [on hold]

Could CentOS desktops (required to run RPM-only applications) operate in the context of an Ubuntu intranet? e.g. remote file hosting, network authentication and intranet applications are managed by ...
2
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2answers
5k views

How to install build-essential on Ubuntu 12.04? (gcc and g++ dependency issues)

I have just installed Ubuntu server 12.04 LTS. I am trying to install build-essential package; however, when I try to install it I receive the following error: Some packages could not be installed. ...
1
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1answer
19 views

postgresql installation failed with apt-get

I'm running on an AWS Ubuntu image. In an attempt to set up my machine, I played around with apt-get to add and remove PostgreSql and some of its modules. Now, when I run sudo apt-get install ...
0
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0answers
11 views

IPTABLES + Ipset blacklist forward policy blocks all connectivity in OpenVPN (also non-blacklisted)

I'm blacklisting IPs using ipset + iptables. Made my own script, before I found this one by someone else: https://github.com/trick77/ipset-blacklist Both my own and his have the same issue: When ...
9
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3answers
5k views

Trying to get SSH with public key (no password) + google authenticator working on Ubuntu 14.04.1

I'm using Ubuntu 14.04.1 (with OpenSSH 6.6 and libpam-google-authenticator 20130529-2). I'm trying to set up SSH logins where the public key authenticates (without a password) and a user is prompted ...
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1answer
1k views

Installed ProFTP on Ubuntu and it is running but cannot login

I just spun up a new server on Digital Ocean that I plan to use for Backup files....my client has a website on a Share Hosting server running wordpress and I cannot get them to let me migrate to a ...
1
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3answers
29 views

LVM and RAID setup

I am relatively new to LVM and RAID. I have a Server (HP ProLiant) with a Hardware Raid (RocketRaid 2710). Given two HHDs (500 GB) I wanted to setup RAID 1 (Mirroring). When installing Ubuntu I made ...
9
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12answers
25k views

Can Ubuntu Desktop “become” Ubuntu Server?

Am I correct that Ubuntu desktop and server are the same os but that desktop runs X and lacks things that a server might have like dhcp server, mysqld, apache, etc.? And that if I add those items it ...
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0answers
12 views

Domain points to wrong account [on hold]

I have some trouble with my server. first, i had a main domain mydomain.com and a second mydomain.net which was parked on mydomain.com. Now i try to have a own account for mydomain.net but it ...
0
votes
1answer
15 views

Install Ubuntu LTS on a Primergy RX300 S4

I'm a sysadmin beginner so bear with me. We got delivered a Fujitsu Primergy RX300 S4 rack server and we need to install Ubuntu LTS 14.04.3 on it. The supported OS have not listed Ubuntu or Debian - ...
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0answers
8 views

Enable Firebird Interbase for PHP on Ubuntu LAMPP

I installed Firebird on Windows along with XAMPP and all went OK. On Ubuntu, after installing Firebird Server following the instructions here. I uncommented the "interbase.so" line in php.ini, but I ...
0
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1answer
13 views

Dovecot can't see user home dir

I'm testing my Dovecot configuration with mutt but without success. I have user user@example.com, I created home directory for him with maildirmake.dovecot command. But Dovecot cant cd to home ...
3
votes
2answers
6k views

How to downgrade a certain ubuntu 10.04 package (php) back to karmic?

I've updated from 9.10 to 10.04, but unfortunately the PHP provided with 10.04 is not yet supported by zend optimizer. As far as I understand, I need to somehow replace the PHP 5.3 package provided ...
0
votes
1answer
1k views

Xsession errors - cannot log in

I'm running linux mint 14 and when I try to log in I get an error saying "Session lasted less than 10 seconds...". When I click on details it says: /etc/mdm/Xsession: Beginning session setup... ...
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2answers
1k views

How to install APC on a vagrant box running Ubuntu 12.04 with PHP 5.4?

In my "Vagrant" file I have this line: chef.add_recipe("php::module_apc") But it gives me this error: [2013-01-11T22:14:53+00:00] INFO: Processing package[php-apc] action install (php::module_apc ...
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votes
1answer
15 views

How to configure a New Relic agent to notify about out of date software on a Linux server?

All of my servers have a New Relic agent installed and I'd like to use this infrastructure for guarding against out of date software, and in particular against security patches that exist but are ...
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0answers
29 views

NFS on Ubuntu Server 14 LTS with iptables

I have a virtual server with Ubuntu Server 14 LTS. The provider has offered me NFS storage which I wanted to mount on the virtual server: mount -t nfs 192.0.2.4:/space /mnt/nfs However, I cannot ...
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0answers
9 views

Lightweight incoming-only mail server on Ubuntu/debian [on hold]

I'm looking for a incoming-only mailserver which is as lightweight as possible. Forward incoming Domains would be okay, but if it's even more lightweight it would be okay if the Server just saves ...
2
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2answers
19k views

How do you open up debug logging for BIND on Ubuntu?

I have a BIND server running on Ubuntu that is failing to lookup www.microsoft.com or any records at Microsoft. All other domains like google.com and yahoo.com seem to be working just fine. I am ...
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2answers
2k views

how to change interface ip in ifconfig with /etc/network/interfaces

Hi everybody when modifiying /etc/network/interfaces, saving it and then executing ifconfig i can't see the modification i made..for example here is part of my /etc/network/interfaces: auto wlan1 ...
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1answer
3k views

Bringing the xenbr0 interface up on XEN under Ubuntu 8.04

I installed XEN on Ubuntu 8.04 using this tutorial but after I reboot with the XEN kernel, I don't have xenbr0 device. I see that network-bridge script runs and it creates peth0 device, but not ...
0
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1answer
31 views

Cannot upgrade Python

I just recently tried using Let's Encrypt to generate free SSL certs for a small website I'm running on a personal server. When I ran the letsencrypt-auto tool everything seemed to work, although a ...