Ubuntu 12.04, named "Precise Pangolin" is Long Term Support (LTS) release of Ubuntu Linux. LTS releases receive updates for 5 years and have available paid support from Canonical. The version number comes from the year and month of release (April of 2012).

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ssh: connect to host localhost port 22: Connection refused

I'm trying to get the docker image for ralph running from here. Problem is, although ssh is running fine on my server, as soon as I login to the docker container using docker exec -it b9d0f2ffe7bc ...
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1answer
31 views

Ubuntu 12.04.5 is installing Apache 2.4 not 2.2

I have a VPS running Ubuntu 12.04.5, lsb_release -a output: No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 12.04.5 LTS Release: 12.04 Codename: precise ...
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1answer
50 views

Iptables block layer 7 DDoS attacks

Recently I've been experiencing lots of layer 7 ddos attacks to my website. Specifically an HTTP GET request flood on the index page. (~20k r/s), my server is at OVH, so it's not overloading the pipe, ...
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43 views

Apache VirtualHost gives “Not Found” Error When I Access URL

Here is what I've done so far. The DNS is pointing towards my server. When I issue the command 'ping example.net' it gives me the correct IP of my server, demonstrating that domain is pointing ...
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2answers
73 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. ...
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33 views

How to find and remove this Ubuntu virus? [duplicate]

I have not posted before, but could really use some help. Apparently, I have a virus on my Ubuntu 12.04 server. It is an 8 CPU machine with 32 GB of RAM. The virus only uses one CPU, but uses 100% ...
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21 views

Need to add new hdd on existing ubuntu server 12.04 [closed]

I'm having Ubuntu server 12.04LTS as my local with 500GB HDD. Now I added one more 500GB with this. But, I can't able to find the new one in /media. While trying with sudo fdisk -l I got this. ...
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37 views

sshd croaks daily with “invalid open call: O_CREAT without mode”

One of my servers has daily issues. When I log in via SSH or SFTP, I get the error below. When restoring it via a remote console, I need to purge and reinstall openssh-server. This is not enough, I ...
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37 views

TLS server extension

We have an Ubuntu 12.04 server with Tomcat and Nginx webservers on it to serve two different portals. Tomcat is serving on 443 port and Nginx is serving on 8443 port. And this server got latest ...
2
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48 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) ...
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21 views

how to filter sar -d disk output tidily

sar -D output-I would like a suitable command to run alongside stress -hdd but this is the output which sar -D 1 10 gives. I have filtered it using both awk |'NR > 1 {printf ...
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1answer
30 views

Apache starts up with high memory usage. Why?

My apache is starting up with high memory usage right away. After a reboot or a restart I'm seeing these kinds of number top - 15:37:59 up 22 min, 1 user, load average: 0.12, 0.09, 0.12 Tasks: ...
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1answer
26 views

Import MySQL Database : No such file or directory

Im am trying to get the following script to import a database. Every time I run the script I get a mysql -u username -pmypassword my_database < /var/hostdata/databases/my_database.sql -bash: ...
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4answers
435 views

Permissions set to 555. How can another user modify the files? [duplicate]

I run an Ubuntu 12.04 x64 VPS with Vesta, and a site in PHP. It has been hacked several times with injected code that looks like this: <?php ...
8
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5answers
209 views

High load due to I/O wait in Ubuntu 12.04 on EC2 instance

I am using Ubuntu server 12.04 , having trouble finding cause of load, I have seen change in response time of server from past week after reading Linux Troubleshooting, Part I: High Load It seems ...
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1answer
21 views

Does auth.log store mysql log in attempts?

Im seeing a few root login entries in the auth.log in one of our database servers but I dont know if these are applications logging in to our database, or ssh log ins. FWIW We are rotating our ...
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1answer
139 views

Ubuntu Server 12.04: upgraded php to 5.4, now sites won't load

I just upgraded php on my Ubuntu Server 12.04 to 5.4 from 5.3, using the ppa:ondrej/php5-oldstable ppa but now my php-powered sites don't load (I just get a downloaded file). I've restarted apache2, ...
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1answer
77 views

Curl version on command line is different to PHP

I've got PHP version 5.5.21-1+deb.sury.org~precise+2 running with Apache2 under Ubuntu 12.04 When I run phpinfo() it shows the curl version as 7.22.0 When I run curl --version via the command line - ...
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1answer
236 views

Apache virtual host is being ignored in Vagrant box

The issue I'm having is that when I visit http://d7.subdomain.example.org from my host machine, it takes me to the default apache It Works page. I'm on a Mac host with a Ubuntu 12.04 Vagrant box with ...
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0answers
10 views

Apache2 on Ubuntu - Start external process on request?

I am using Apache2 on Ubuntu Server 14.04.01 LTS (i368). I would like to start an external process whenever a request comes in (The process started will actually get the request proxied to it.) I am ...
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1answer
56 views

How to migrate RAID-6 from 5 disks to 4 disks while increasing disk sizes

I am having a quite complex problem and while I found solutions to individual steps (and already applied some of them in different contexts), I am not quite sure on how to do the whole procedure ...
2
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0answers
559 views

“echo 0 > /proc/sys/kernel/hung_task_timeout_secs” disables this message

One of my server (Ubuntu 12.04, 16CPU, 32GB RAM) runs the app section of my website (Nginx 1.1.19, PHP5-FPM, Php 5.3.10, Symfony2 Web Framework) Suddenly, users started getting HTTP 5** Errors. When ...
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1answer
56 views

Make postfix trigger a php script using always_bcc

I have been having a VERY hard time with this, have searched everywhere, and in utter desperation am posting this question. I am using postfix and dovecot on ubuntu 12.04. I am trying very hard to ...
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2answers
247 views

How to Make a Self-Signed SSL Certificate which uses TLS?

After upgrading Apache and PHP to the latest version on Ubuntu 12.01 LTS the SSL sites on it became inaccessible, stating error, "ssl_error_no_cypher_overlap". I have tried generating a new ...
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64 views

ZFS on Linux denied access when accessing child dataset on NFS

This is on 12.04 LTS with the latest ZFS on Linux from the ppa. I have two a storage pool named data, and a dataset data/Other with different settings (e.g. compression). I set data to sharenfs and ...
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1answer
57 views

Ghost vulnerbilty - upgrade only affected packages

regarding GHOST vulnerbilty: How could I only upgrade affected packages which can be found like this (on ubuntu 12-04): lsof | grep libc | awk '{print $1}' | sort | uniq I´m looking for a way to ...
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2answers
50 views

Clean /boot on Ubuntu

When I boot my Ubuntu server, I have this warning message: => /boot is using 100.0% of 235MB And when I look into /boot, I have a lot of files which are dependent of the version of the kernel. ...
2
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1answer
138 views

Ubuntu 12.04.2 LTS Server - Randomly hangs with no logging

My server randomly hangs and becomes unresponsive without any logging (dmesg, syslog, kern.log, boot.log, and messages). I cannot predict when it is going to happen. Sometimes the server runs fine for ...
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0answers
33 views

ImageMagick convert to MPC command killed or silently exits

Im having peculiar problem with the "convert" command on Precise hosted on Linode. I am trying to convert a pdf to a memory persistent cache file *.mpc using the following command: $ convert -density ...
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2answers
170 views

How to set custom $_SERVER variable for PHP

I'm working on a PHP web app which ALSO has some command line tools. I need the command line tools to detect the environment so that they connect with the correct DB credentials etc. The web app does ...
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1answer
107 views

Warning :mounting fs with errors, running e2fsck is recommended

Linux server will hang and when I restart it will take around 2 hours to come up and resume normal operations. I checked the system log files and found mounting fs with errors, running e2fsck is ...
2
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1answer
31 views

Is /usr being touched before /etc/fstab-specified volumes get mounted?

I have extracted /usr to a LVM volume that gets mounted by /etc/fstab on an Ubuntu 12.04 box. Basically I ran out of space on / mountpoint and LVM wasn't installed when I got the box, so /dev/sda1 is ...
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3answers
48 views

NGINX Not showing my index.html - Stays default

server { listen 80 default_server; listen [::]:80 default_server ipv6only=on; root /var/www/apexnetwork.org/public_html/; index index.html index.htm; # Make site accessible from ...
1
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1answer
538 views

Fail to do apt-get update on Ubuntu 12.04 Precise

I recieve this error all the time when I try to do apt-get update so that can not install or remove software with apt Get:102 http://archive.ubuntu.com precise-updates/universe Translation-en ...
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1answer
55 views

Apache2 logs missing in ubuntu 12.04

My Ec2 instance configured with apache2 was running fine and all of a sudden web-server stopped serving pages. I checked all the logs but it didn't help or may i am missing something here. Below are ...
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41 views

Slow sudo and ssmtp (hosts file wrong?)

I'm running an Ubuntu Server 12.04.5 LTS and when I type sudo su it takes 30+ seconds to open the shell. Searching on internet, this problem seems related to the file /etc/hosts and /etc/hostname. ...
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39 views

Configuring quagga to report Openvpn VPN subnet

I'm trying to use quagga with RIP2 to route traffic through an openvpn server. At the moment I'm having trouble because it's reporting the VPN subnet (172.19.2.x) as just a single IP (172.19.2.1). ...
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42 views

Installation of Razor failed on Ubuntu

I have a Ubuntu Server 12.04.5 LTS, with SpamAssassin 3.3.2. I try to install Razor2 for SpamAssassin by following this tutorial. Razor version 1:2.85-4build1 is installed with the following command: ...
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1answer
85 views

How do iptables policies work?

I've added some basic rules: iptables -A INPUT -p tcp --dport 22 -j ACCEPT iptables -A INPUT -p tcp --dport 80 -j ACCEPT Then, command to close all other ports with: iptables -A INPUT -j DROP ...
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2answers
279 views

“sudo apt-get remove hadoop” is not removing package

I am trying to uninstall Cloudera Hadoop from my Ubuntu System. For this I tried sudo apt-get remove hadoop command but this command is failing with following message: ...
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123 views

Using an Ubuntu VPS as a firewall/router

I have a dedicated server running ubuntu 12.04 hosting several websites and other applications which require client IP's to be visible, however the main dedicated server does not have DDoS protection, ...
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2answers
391 views

Chef Installation Error - Error executing action `run` on resource

I am trying install chef (chef-server_11.0.4-1.ubuntu.12.04) on ubuntu 12.04.5 64 bit. After the installation, when I run "chef-server-ctl reconfigure" getting following error. let me know how to ...
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0answers
54 views

Creating a Remote Desktop Session from within an EC2 server, not to it

Ok, I'm having problems answering this because I can't figure out how to word it. Most questions about "remote desktop" and "ec2" focus on remoting into an ec2 instance, which isn't necessarily what I ...
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1answer
55 views

File Location of mysql startup script on Ubuntu

When we run a command as "service mysql start" [OR] "/etc/init.d/mysql start", The mysql daemon it starts. Who is providing the job mysql to start to those commands? What is the startup script file ...
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1answer
65 views

Qcow2 images growing far beyond what they should

I am using ubuntu 12.04 and have seen this: https://bugs.launchpad.net/ubuntu/+source/qemu-kvm/+bug/1025244 Our qcow2 images are growing far beyond what they should... with some of them growing to as ...
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1answer
20 views

Is there any option to allocate fixed number of php process to an application?

I have an Ubuntu server with Nginx and PHP5-FPM in which the settings are as follows: /etc/php5/fpm/pool.d/www.conf pm = dynamic pm.max_children = 6 pm.start_servers = 4 pm.min_spare_servers = 2 ...
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0answers
39 views

ModSecurity on Apache 2.2 in EC2 - HTTP Status 413 messages dropped

Hi I am running Mod_Security on Ubuntu instances in EC2 behind an Elastic Loadbalancer. The app is a Ruby App. I have set SecRequestBodyLimit 293601280 When I upload files below that size, they ...
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0answers
172 views

uwsgi + nginx + flask: upstream prematurely closed after file is downloaded

I created an endpoint on my flask which generates a spreadsheet from a database query (remote db) and then sends it as a download in the browser. Flask doesn't throw any errors. Uwsgi doesn't ...
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0answers
116 views

Domain pointing to wrong DocumentRoot? [on hold]

I was following this tutorial about installing an SSL cert on a ZPanel Ubuntu Install http://blog.arnas.web.id/?p=145 (I also enabled mod_ssl, which it doesn't mention in the post) The certificate ...
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1answer
19 views

Where are smbd system links in UBUNTU 12.04?

After installing Samba on UBUNTU 12.04, I checked the system link run level directories and were not able to find smbd links. This is interesting because smbd is started automatically on reboot. Here ...