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
21 views

POSTFIX:Must issue a STARTTLS command first. Email not being send from commandline ubuntu [duplicate]

I am trying to send email from the command line from my ubuntu server. So I started configuring the postfix onto my local machine rather than on server. So basically these are steps which I followed: ...
4
votes
2answers
3k views

MariaDB Galera Cluster falls out of sync easily

We're trying to debug an issue with a MariaDB cluster. We're running Maria 10.0.19 on c4.large instances in Amazon EC2; the OS is Ubuntu 14.04 (Trusty). There are three machines clustered together, ...
0
votes
1answer
24 views

MySQL root password not working as expected

I am running MariaDB 10.0.24 on Ubuntu 16.04. I installed it via the xenial repo apt-get install mariadb-server. The root password doesn't seem to be working properly. I ran through these steps to ...
0
votes
0answers
16 views

How to find a.out(not ELF) files?

I want to find the old format files a.out (not ELF). Simply I don't know what should return file. The following link doesn't help How can I tell an a.out binary from an ELF one?: Use the file ...
0
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0answers
8 views

I'm having random nfs slow downs on my nfsv4 gigabit network which cause videos to slow down then speed up

I've noticed this issue happen in two different video players so I'm pretty sure it's a network problem. I'm running Ubuntu with the kernel 4.2.0-35-generic. Here is the result of my nfsstat -4 -s ...
0
votes
1answer
7 views

Package apache2-mpm-itk in Ubuntu 15.10

I'd love to use apache2-mpm-itk module as mode for Apache2 servers. I used it without trouble on 14.10. However, upgrading to 15.10 i see that package is not available anymore, so i cannot find a way ...
0
votes
0answers
7 views

Issue with nfsen in fetching sflow data from Linux host

I have two VMs. The first VM is at AWS EC2 instance (red hat). I am using this system as sflow agent. I have installed hsflowd in this machine. My hsflowd.conf file looks like following: DNSSD = ...
1
vote
1answer
52 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 ...
0
votes
0answers
6 views

VirtualBox Vboxmanager not seeing VMs. [migrated]

I need to enable symlinks in my virtualbox shared file called sf_VMShare following this tutorial. When I run the command: VBoxManage setextradata YOURVMNAME ...
1
vote
4answers
2k 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 ...
1
vote
1answer
22 views

Disable eth0 on boot, but allow to turn back on

We are setting up an offline/offsite backup server. The purpose is to have it offline and uncontactable from anything. Then, once the cron starts the backup process it will enable the network, backup ...
2
votes
4answers
2k views

Ubuntu Server 10.04 Heavy Network Traffic causes disconnect

I'm currently running a headless Ubuntu 10.04 server. Installed is the LAMP stack, Joomla, Virtualbox, phpvirtualbox, webmin and proFTP.. It resolves the IP address so I can access it remotely (either ...
0
votes
1answer
33 views

Open LDAP Server migration

Im trying to migrate an Open LDAP Server from Ubuntu LTS to Arch Linux. So I followed the Guid by Alex Pánek. So first I backuped the Databases from the Ubuntu Maschine: ubuntu$ sudo slapcat -b ...
1
vote
1answer
4k views

sSMTP on Ubuntu: “ssmtp: Cannot open smtp.gmail.com:587”

I have configured sSMTP on Ubuntu and it worked fine yesterday. But today when I am trying to send email it shows "ssmtp: Cannot open smtp.gmail.com:587" error message. $ apt-get install ssmtp $ ...
0
votes
2answers
2k views

Unable to PPTP through NAT on Cisco 881

I'm trying to connect to a PPTP server which is sat behind a Cisco 881 NAT router. The server is running Ubuntu Server 12.04 and is running Poptop pptpd as the PPTP daemon listening for connections. ...
5
votes
4answers
3k views

In Ubuntu Linux, how do I list packages installed from the “universe” repository?

On an Ubuntu 10.04 LTS server, I want to list installed packages and see what repository they come from. It’s easy to list installed packages, but it does not include the name of the repository (such ...
0
votes
2answers
312 views

Can't use external IP on Hetzner VPS

I've changed my virtual server model on Hetzner recently. The new one has an external IPv4 address on which it's accessible from the internet (as it should). But I can't use this external IP in ...
-1
votes
0answers
17 views

Is it secure to have port 3000 open to public on Node.js app?

So I'm running my node.js app on port 3000 on my ubuntu server and used this tutorial How To Set Up a Node.js Application for Production on Ubuntu 14.04 to use NGINX to run it on port 80. However port ...
2
votes
1answer
40 views

Forward SSH to another Host

I have an ubuntu server which is visible from internet, let's call it "jumper". And this server has this name actually because I need that whenever an user SSH this server, it jumps (or forward or ...
-2
votes
0answers
16 views

Not being able to SSH into server, working via WHMCS serial console [on hold]

I'm running a VPS (Ubuntu 15.04) and a simple web page on it. Recently I noticed that the page is not available, so I tried to ssh in to the server. It timed out (Connection timed out) I logged in ...
0
votes
1answer
128 views

PSAD does not start on Ubuntu 14.04

I complied PSAD from source, compilation went smoothly however when I run this command: sudo psad --sig-update I got this: Can't load ...
1
vote
1answer
37 views

How to completely remove volumes/instances from OpenStack Kilo database

We're having some troubles deploying Kilo on a system with 3 controllers and 3 computes, through mirantis fuel 7.0. The problems involve creation and attaching of volumes, specially the ones stored ...
17
votes
5answers
2k views

Can you run Docker natively on the new Windows 10 (Ubuntu) bash userspace?

My understanding was that the primary limitation of running docker on other OSs was the Linux Network containers that made it possible. (Certainly for Macs). Recently Microsoft announced a beta of a ...
-3
votes
2answers
515 views

What is the default root password for Zabbix Appliance 3.0?

I can't seem to find the default password for the root user on a fresh installation of Zabbix Appliance 3.0. Tried many common default passwords, but non worked. Also tried other usernames that might ...
0
votes
1answer
1k 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 ...
1
vote
1answer
41 views

Trying to install CloudWatch Agent on Ubuntu 14.04: “Failed to create virtualenv”

I am trying to install AWS CloudWatch Log Agent on Ubuntu 14.04 following this guide: http://docs.aws.amazon.com/AmazonCloudWatch/latest/DeveloperGuide/QuickStartEC2Instance.html When I type in ...
0
votes
2answers
2k views

Setting jenkins CI behind apache

I am trying to set-up jenkins behind apache2 (Both fresh install with the package manager) OS used : ubuntu 12.04 LTS Actually I am setting up a couple services behind this Apache. First is ...
0
votes
0answers
18 views

How to view l2tp/ipsec clients

I have an l2tp/ipsec server. How I can list who is connected to server? I used to use last for ppp users using pptp. but that not working. I tired who too, but no luck. The only option I have is ...
0
votes
1answer
57 views

Ubuntu Anonymous Samba Share Now Not Accessible From OSX Machine

I have an OSX machine which has been connected as Guest to a Samba share on my Ubuntu machine. It's no longer connecting. When I click 'Connect to Server...' in Finder, and enter ...
0
votes
1answer
31 views

Ubuntu - SQL Server 2012 - Microsoft ODBC Driver 13 - Error: 18456, Severity: 14, State: 8

I have been attempting to get "Microsoft ODBC Driver 13 for SQL Server" running in Ubuntu for two days now, and I am out of ideas / have exhausted Google. My test machine is a vagrant VM, and these ...
-1
votes
0answers
19 views

Fatal error: Call to undefined function simplexml_load_file() on Puphpet

I have just booted up a new VM using Puphpet, VirtualBox(5.0.14) and Vagrant(1.8.1). I am running on Ubuntu 14.04 with PHP 5.6.2 and am getting this error: Fatal error: Call to undefined function ...
-4
votes
1answer
29 views

Tips to have various server environments [on hold]

What all the tips you guys suggest to setup various server environment like development, staging and production? What all configurations I need to use?i am using Ubuntu, please tell me the recommended ...
3
votes
2answers
63 views

Ubuntu as NAT Gateway with iptables

I'm trying to configure Ubuntu 14.04 to act as a NAT gateway between a private and public network. Public Interface -> eth0 (178.x.x.x) Private Interface -> eth0:0 (192.168.206.190/17) I've tried ...
0
votes
0answers
15 views

optimize apache for high latency satellital internet connections

I have an Apache server delivering a web app, the clients are in remote areas using satellite connections, this connections are in the range of 3mb downlink, 1mb uplink, but they have high latency ...
-1
votes
2answers
35 views

Local network for websites

I'm a student doing an internship at the moment. I mainly develop websites using virtualbox and vagrant. I was wondering if i could like make the websites i build accessible for everyone in my ...
1
vote
2answers
2k views

Celery with Upstart - processes are dying unexpectedly

When I'm running Celery with Upstart, after a while, the child processes or the main processes die without any trace. The Upstart script I'm using (/etc/init/celery): description "celery" start on ...
0
votes
0answers
13 views

Installing mailutils - Where is the configuration?

So I installed mailutils on Ubuntu 14.04 and was prompted to choose a configuration: https://assets.digitalocean.com/articles/postfix_sendonly/1.png I choice "Internet Site", and updated php.ini ...
0
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0answers
24 views

cannot boot fresh installed ubuntu server 16.04

I installed ubuntu server 16.04 from a USB stick. At the step of installing GRUB boot loader. I can choose which disk I want to install it. /dev/sda, is the usb drive. /dev/sdb, is the hard drive ...
0
votes
1answer
79 views

I can't get the right items to boot on ubuntu-16.04 and systemd

I needed to make a new image and opted for the new 16.04 ubuntu so I could get newer versions of some packages and not install from source. So far, I regret that decision as online docs are sparse. ...
0
votes
0answers
22 views

Can't modify $_SESSION Unknown: write failed: No space left on device (28) in Unknown on line 0

When I try to assign a value of $_SESSION $_SESSION['whatever'] = "test"; I get Warning: Unknown: write failed: No space left on device (28) in Unknown on line 0 There is enough space on device, ...
0
votes
0answers
9 views

Uploading files from a Webserver to GlusterFS?

So the question is exactly what the title suggets. If I have a dedicated server set up using GlusterFS... How would I transfer a file from the web server (that is using Nginx) to GlusterFS and more ...
2
votes
2answers
2k views

How to stop RabbitMQ starting on Ubuntu bootup?

I have installed RabbitMQ on Ubuntu, but I want to only start it when needed manually, not have it load automatically upon boot.
2
votes
3answers
4k 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
15 views

PHP 7 and Apache2

I am using Ubuntu 14.04 and just tried to update from PHP 5.6 to 7 - everything worked fine and when I type in php -v I get this PHP 7.0.5-3+donate.sury.org~trusty+1 (cli) ( NTS ) Copyright (c) ...
0
votes
1answer
15 views

DNS caching with BG updates

I am looking for a solution for Ubuntu server to use DNS caching that. if it has the record and is not expired (either in cache or in local definitions) return the record if it has the record and is ...
1
vote
1answer
2k views

Zentyal Server : Setting up secure VPN Client

I have officially exhausted pretty much all my google-fu trying to set this up so I'm asking my question here. For the record, I am a mid level rookie who has played around with servers in his spare ...
0
votes
1answer
30 views

Codeigniter: website have too many redirects

I have developed a webportal in codeigniter framework,but when i try to host in a shared hosting server i will get this error. wwww.abc.com redirected you too many times. ERR_TOO_MANY_REDIRECTS ...
-1
votes
2answers
24 views

(Ubuntu Server) Why does /usr/bin/node --version show v6.0.0 when /usr/bin/nodejs --version show v4.3.3?

I recently had nodejs v6.0.0 installed. I ran sudo apt-get remove nodejs and reinstalled the LTS version using curl -sL https://deb.nodesource.com/setup_4.x | sudo -E bash - sudo apt-get ...
1
vote
1answer
23 views

502 bad gateway errors after 68 concurrent users to website

I'm running into issues while doing some stress testing in jMeter. Essentially, we're hitting a hard limit of 68 concurrent users. As soon as the test ramps up to that number of users, we're getting ...
0
votes
0answers
7 views

ubuntu 16.04 blank screen at bootup [migrated]

I am having a problem when booting up Ubuntu (both 15.10 and 16.04). I am getting the following error: $ cat ~/.xsession-errors openConnection: connect: No such file or directory cannot ...