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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creating a custom service on ubuntu

I am setting up an ap called scumblr (https://github.com/Netflix/Scumblr/wiki) The final step calls for initiating the server using the following 3 commands: redis-server & ...
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14 views

reboot the ubuntu, core pattern reset

I am in the ubuntu execute the command "sudo sysctl -p" to change the kernel.core_pattern, but when I reboot the system, the change will be reset, I have the execute the command "sudo sysctl -p" ...
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Deploying node.js application on Ubuntu VPS

I created an real time android application backed by a node.js application. I use express, socket.io, mongodb and ubuntu for my backend. But my problem is on how I can possibly run it in production or ...
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20 views

Dell PE 830 with updated BIOS - 2 TB HDD

I was wondering if anyone had overcome the small disk limit on this server? Mine does not have a RAID controller and I wanted to install (2) 2 TB drives in it for storage and use the Ubuntu 14.04 ...
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4 views

Remote boot ubuntu desktop machine [migrated]

I've setup ubuntu 14.04 on my iMac at home (as well as SSH & portforwarding). I can connect via SSH when the machine is on, connected, and not suspended. Similar to many hosting providers (i.e. ...
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1answer
18 views

Lots of apache2 processes causing high server load

I noticed that my site was down today and when I ssh'd into my box and ran top, I noticed that my server load was super high. I quickly shut off apache and waited until the load dropped, but as soon ...
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11 views

Vestacp custome nameservers [on hold]

I am using vesta control panel, as per their documentation, i have created custom nameservers, here what i did... I have registered both nameservers using 2 different ips at my domain registrar. I ...
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0answers
16 views

Create a 2 ISP failover config on Ubuntu or FreeBSD

I have 1 Ubuntu Box and 2 ISP providers. Also I have a 1 LAN: # WAN1 (100Mbps): ip: 5.5.5.5 netmask: 255.255.255.252 gateway: 5.5.5.1 #WAN2 (20Mbps): ip: 4.4.4.4 netmask: 255.255.255.0 gateway: ...
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0answers
24 views

FreeRadius Error reading /etc/freeradius/huntgroups

I've configured freeradius to use sql, everything was working fine, I was doing some tests with the users, and suddenly I cannot start the debugger because of this error: rlm_preprocess: Error ...
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0answers
17 views

Can NAT be used for a br-ex OpenVSwitch interface (VirtualBox)?

Can "NAT" be used for an interface (eth1) which has a br-ex attached to it using OpenVSwitch or does it have to be "Bridged Adapter"? (VirtualBox) /etc/network/interfaces on Ubuntu 14.04 auto eth1 ...
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Equivalent to TYPE=“OVSPort” DEVICETYPE=“ovs” OVS_BRIDGE=br-ex in Ubuntu 14.04?

Is there an equivalent to TYPE="OVSPort" DEVICETYPE="ovs" OVS_BRIDGE=br-ex in Ubuntu 14.04? The system is OpenStack Icehouse with 3 nodes (controller, network, compute1) each on a VirtualBox Ubuntu ...
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1answer
22 views

Setting apache2 as default web server on ubuntu

So on my ubuntu server I have both apache2 and nginx installed for testing purposes. However, currently nginx is set as default (nginx is the one that starts up when the server is restarted), but I ...
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8 views

Difference between ps_mem.py & free -m . Ubuntu server kills processes

Previously, I had a 4GB RAM server with Linode. Several times, I did "free -m" command to check available memory. I asked question here as well, but realized its more appropriate here. Most of the ...
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0answers
12 views

File changes are not reflected after system date changed to future [on hold]

I have changed my system date to check date related functionality, But after that whatever changes done in my php files are not reflected in output. Every time it is showing result from previous file ...
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1answer
17 views

30GB EBS Backed Ubuntu server showing 7.74GB in landscape-sysinfo

I created a ec2 instance with 30GB of EBS volumne. However when i SSH into my ec2 instance, the landscape-sysinfo says usage of 9.7% of 7.74GB. Wasn't it suppose to be 30GB instead of 7.74GB System ...
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2answers
49 views

nginx force ssl exception

I am using Ubuntu 14.04 with nginx installed and SSL installed on main domain, which works fine. I have even parked 5-6 other domains with main domain. If I go to any of those domains, I get an SSL ...
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33 views

Unable to run salt.highstate

I'm working on configuring a group of 40 servers to be managed by SaltStack. I'm testing with just one minion at the moment, which I have successfully added to the master. For simplicity, I'm using ...
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0answers
13 views

Run qemu in Ubuntu Server(inside VirtualBox) error [duplicate]

I'm running qemu for virtualization in my ubuntu server which is vm inside virtualbox. It reports such an error: Could not access KVM kernel module: No such file or directory. I did some digging ...
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2answers
42 views

How do i install another version of PhP?

I would like to have installed WHMCS on my dedicated server. (I already have installed apache2) How do I install PhP 5.4 as WHMCS not support PhP 5.5? WHMCS System requirements: ...
3
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1answer
88 views

redirect rewritten url using haproxy

Using haproxy version 1.4.24 on Ubuntu 14.04 I would like to use haproxy to rewrite and redirect urls which are no longer valid to their new equivalent. I am already using haproxy as the reverse ...
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0answers
10 views

FailOver Ip configuration

i have got a new Ip from my provider un-configured one i have tried everything to configure it but nothing didn't work, when i ping it from the server it is working but when i try to ping it from my ...
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2answers
36 views

Disable all outbound network

I cannot seem to find any information on how to completely disable all networking. Essentially I want to flip the switch for any outbound or inbound networking. Like the wifi button on my computer, ...
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1answer
33 views

Router accessible from Windows but not from Ubuntu on the same machine

I have a Linksys E900. I can access the internet and its admin page from Windows but not even its admin page from Ubuntu (on the same dual boot machine). Like there is no communication between the ...
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0answers
32 views

Unable to change ulimit setting [migrated]

I edited /etc/security/limits.conf to have root hard nofile 20000 root soft nofile 10000 And added session required pam_limits.so to /etc/pam.d/common-session and ...
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0answers
18 views

added new drives to raid 5 with wrong format then removed them and broke raid 5

thanks in advance for any help. In summary: I added 3 new disks to raid 5 array. Then, thinking they were not added, I removed them. Now the array doesnt work. What can I do to get back the ...
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2answers
37 views

Can't connect to MySQL from another server

I have two servers on the same subnet. 192.168.100.1 (mysql) 192.168.100.2 (php) MySQL seems to be running fine on it's box but I can't seem to connect to it. These are both ubuntu boxes and ...
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0answers
12 views

Nginx error on installing vestacp

I am trying to install vestacp on fresh dedicated server running ubuntu14.04 with nginx installed, however i have tried to remove this using... sudo apt-get remove nginx sudo apt-get purge nginx ...
2
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1answer
23 views

cant sftp into ubuntu server

Hey guys I've set up an openssh server, but I still cant sftp or ftp into my ubuntu server. I am always getting login failed errors for every attempt i try to make. I am running ubuntu 14.10 I ...
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38 views

How to lock a user into a directory (not SSH)

I have regular users who are not SSH'd into a machine but are accessing the machine directly. How can I lock them into their home directory or any directory? At the moment they can successfully run rm ...
1
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1answer
64 views

Nginx 10k concurrent connections

We are not able to handle more than 3k concurrent request in nginx (Connecton time out). We change also the ulimit to 20000. Following are my nginx.conf and sysctl.conf files: user www-data; ...
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0answers
21 views

ubuntu server 14.04 port 143 closed [closed]

I can't access my mail server using roundcube because port 143 is closed. I doesn't appear when I run nmap localhost. In roundcube log I get connection refused on port 143. I have a running website, ...
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1answer
26 views

Using Cloud Servers and Firewall

I would like to ask if the configuration of "firewall rules eg. only allowing port 80.. when configuring a server instance on cloud services such as google cloud and amazon aws is securely equivalent ...
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0answers
12 views

shorewall limit band traffic on linux [closed]

I have a doubt about shorewall that can limit my band traffic. I have launch inside my ubuntu system in console: sudo iptables -L can someone check my rules if there is something that limit my band ...
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0answers
16 views

Plesk 11.5: Running Apache as FTP User using Templates [closed]

DOUBT: I am not a Linux Expert, and I have some doubts about the suitability or the security risk of some configurations of running Apache as FTP user in Plesk. I would like having some other ...
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1answer
55 views

Does PHP mail function need a mail server? [duplicate]

We recently moved our Drupal sites to a Linode server. One of those sites has a lot of users filling forms. The previous server sent, with no problem, all form registrations to an email address, this ...
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32 views

Packet loss between windows guest and Ubuntu 14.04 host

We are seeing packet loss between one of our Ubuntu 14.04 hosts and a KVM guest running Windows 2008 R2. The loss only shows up at high loads. Similarly loaded machines running 12.04 do not exhibit ...
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1answer
25 views

Configuring varnish to write an apache error log with IP addresses

I am in the process of installing fail2ban on a webserver which runs Varnish. Many on the 'jails' require access to the apache/php error logs. One of the problems I have is that all of the refernces ...
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2answers
62 views

Recommended partition scheme for a production server with two 147G hard drives?

I have a dedicated box whose specs are: CPU: 4-core Xeon 3450 *1 (HT enabled) RAM: 8GB DDR3 HDD: 15k SAS 147G *2 (currently in RAID 1) The current OS is Windows Server 2003. I am running a web ...
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1answer
25 views

Puppet: How to skip restart during package upgrade until config is replaced?

I'm trying to get Puppet to upgrade our Varnish 3 servers to Varnish 4, a major update which requires an updated config file or it won't start. This is on Ubuntu 12.04. The Varnish module is ...
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0answers
18 views

What are the correct memory settings for Tomcat 7 under java 8?

How is memory set in tomcat-8 with java-8 as jvm? In java-7 using java-7 i would create a file with contetnts as below #!/bin/sh export JAVA_OPTS="-Xms1000m -Xmx6000m" /tomcat/bin/startup.sh How ...
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1answer
23 views

nodejs server and nginx conflict

I am running a nodejs application on a digital ocean droplet and I am trying to configure nginx so that it proxies the port the port that my application is running on, This is what I have on my ...
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3answers
36 views

Command shows different results when I login as a user vs su to the user

I'm trying to run a simple command from an init.d script and I'm troubleshooting why the command doesn't work when I run it from my init.d script but works when I run it as my user. Can someone ...
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0answers
19 views

PHP cURL “Unknown SSL protocol error in connection to” [migrated]

When I try to run my script using cURL on my computer via XAMPP, everything works perfectly: http://i.stack.imgur.com/jlerA.png When I move it onto my server (Ubuntu 14.04 x64), it stops working and ...
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0answers
22 views

Linux user in group can't cd into directory with executable permission [migrated]

(Ok, originally asked this on StackOverflow, got it downvoted with a suggestion to post on SuperUser, where I got a hint (but no luck) with using FUSE to mount media. As serverfault seems to have the ...
3
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1answer
17 views

meaning of rx_queue_*_csum_err and rx_fifo_errors

I am trying to debug some networking issue with one server. I monitor this machine with multiple monitors and I see that at times ping error rate jumps to 5/10% I am running on ubuntu and I see that ...
2
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2answers
41 views

Assign multiple IP and Gateway in Ubuntu Server

I'm trying to find an option to add/assign multiple IP addresses and Gateways to the Ubuntu Server. The reason behind is, I want to access devices from two different networks. For instance I may want ...
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2answers
230 views

No SNMP query responses from Ubuntu 14.04 LTS server client machine

Alright, I've got two VMs both running under ESXi. One VM is hosting Observium, which uses SNMP to grab its info. I pointed Observium at my ESXi host directly, and it worked fine, so there's no issue ...
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0answers
21 views

Erlang and eJabberd with mysql [closed]

I installed ejabberd for chatting on my server, but when I try to start up ejabberd it can't connect to mysql. It tells me I need to have erlang mysql modules installed but there is nowhere that ...
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0answers
5 views

Unable to change IPv4 properties for a VirtualBox Host-Only Adapter [migrated]

Keeps coming up with: In order to configure TCP/IP, you must install and enable a network adapter card. Using Vagrant and ScotchBox if that helps but also tried with a basic Vagrant box and same ...
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1answer
77 views

My server is no longer able to send emails after upgrade [closed]

I am no longer able to send emails since I updated my server from Ubuntu 13.04 to 14.04. I have several websites installed in my server, and none of them is able to send emails any more. Before the ...