Amazon Elastic Compute Cloud (EC2), which allows users to rent virtual computer systems, is part of Amazon Web Services.

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Restore system file permissions

While I was setting up an Ubuntu server (EC2), I accidentally run the following: sudo chown -R www-data.www-data /* very dumb and noob move on my end. Anyway, is there an easy way to restore all ...
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37 views

Authentication vsftpd account using remote LDAP user

I'm trying to authenticate vsftpd from LDAP logins which hosted remotely another server . vsftpd hosted on Ubuntu 14.04.2 LTS (GNU/Linux 3.13.0-48-generic x86_64) amazon aws . from the LDAP server ...
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2answers
34 views

lost folder from /mnt and recovering

I'm running Ubuntu 14.04.2 LTS (GNU/Linux 3.13.0-48-generic x86_64) on Amazon AWS. I had a folder "foo" in the /mnt and after few modification I had to recover to previous backup of the instance . ...
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0answers
16 views

Can't connect to Amazon Ec2 via SSH

I just installed a cloud VPS on Amazon Ec2 today. I can connect to the VPS via SSH port 22 but I unable to connect into it again after changed the SSH port to 35000. I've allowed TCP - 35000 via ...
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16 views

Xvfb stuck at “built-in extension GLX” on Amazon Linux

I started to use AWS EC2 with Amazon Linux a few days ago. I am running java with selenium webdriver over firefox to get some data from websites, and it works well when running on my windows computer. ...
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1answer
29 views

How to start the upstart process for golang application?

I am using upstart to start my golang application. I have my application folder structure like this, Web-app/ /app main.go I built the application $cd /home/ec2-user/go/...
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1answer
84 views

How to get GNU parallel on Amazon Linux?

Preferably without having to compile it from source. I tried adding repositories I found on Google: CentOS 6 and CentOS 5, but both give me: [ec2-user@ip-10-0-1-202 yum.repos.d]$ sudo yum install ...
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2answers
62 views

Making environment variables available for downstream processes started within an init.d script

This questions stems from @FrustratedWithFormsDesigner comment. How do I make export environment variables set within an init.d script available to downstream processes started within that same init....
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56 views

How can I use two Ethernet cards in AWS Ubuntu LTS 14.0

We are using two Ethernet cards in an AWS Ec2 instance. And trying to ping with both Ethernet card by using ping -I eth0 google.com and ping -I eth0 google.com, we got the response from eth0, and eth1 ...
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1answer
20 views

Accessing a server's output on EC2

I've just been hired to do work on a company's existing website, which is running on EC2. They gave me the proper credentials to ssh in and I got in successfully. I found out that webpages are being ...
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1answer
71 views

Update nginx on Amazon linux (CentOs)

I'm trying to update nginx on a amazon linux instance which I read is compatible with centos repos.On their site there is a little guide to upgrade the repo. However I'm not sure how to translate it ...
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37 views

Locked myself out of Amazon EC2 [duplicate]

I'm working with an Amazon EC2 instance and at some point, I wanted to chown a directory recursively, and it looks like I applied the command to the whole file system. As a result, it is possible that ...
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2answers
74 views

How to move from one filesystem to another without changing directory structure?

/dev/xvda1 is full so I want to move its contents onto my 30GB udev filesystem. Filesystem Size Used Avail Use% Mounted on udev 30G 4.0K 30G 1% /dev tmpfs 5.9G 768K ...
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0answers
22 views

Resize system partition

I would like to re-size xvda1 to 300G. I am using aws ec2 with Ubuntu 14.04. NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT xvda 202:0 0 300G 0 disk `-xvda1 202:1 0 8G 0 part / xvdb ...
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1answer
36 views

Pass Environment Variable to Sudo AWS ec2 sudo node

I am new to linux and AWS. I have a node.js server running on an EC2 instance. I am running the following command to keep it running endlessly and on port 80: $ sudo node app.js & Now when I ...
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1answer
106 views

limit user to only a single command: “su -”

I have setup a web server that hosts a Play! Framework application, the server is an Amazon Linux EC2. If you are not familiar with Amazon Linux, by default there is a root user and an ec2-user with ...
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1answer
146 views

Apache server at new AWS EC2 instance is not reachable

I am not able to access my web server I recently set up on Ubuntu AWS EC2 instance: client:~ user$ curl yyy.yyy.yyy.yyyy curl: (7) Failed to connect to yyy.yyy.yyy.yyyy port 80: Operation timed out ...
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0answers
33 views

AWS ELB Latency issue

I have two c3.2xlarge EC2 machines with Ubuntu environment both in us-west-2a AZ. Both contains same code with mySQL database from AWS RDS (db.r3.2xlarge). Both instances are added to an ELB. Both has ...
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0answers
65 views

Cant SSH in to cloned EC2 server from public network [closed]

I created a new AWS EC2 instance, using the AMI image, configured it to my liking, and saved an image, (Call this svr01). Then I created another EC2 instance, using that same image ((Call this svr02). ...
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1answer
153 views

Permanent desktop on Amazon EC2 instance with ubuntu server

I'm trying to run a program on an ubuntu 14.04 server instance on Amazon, but it needs a gui. I can install lunbuntu and use x2go to view the desktop, but as soon as there is a hiccup in my internet ...
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1answer
305 views

How To Install and Configure ImageMagick for PHP and Wordpres on Amazon Linux AMI

I've installed a fresh Wordpress site on my Amazon Linux AMI following the setup instructions listed on the EC2 Tutorials section i.e. "Hosting a WordPress Blog with Amazon Linux". I'm also using the "...
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1answer
167 views

Linux yum Commands that are Equivalent to these Ubuntu apt-get Commands [closed]

I'm using an AWS EC2 instance and I'm trying to switch from an Ubuntu instance to a Linux (Amazon Linux AMI) instance and in doing so I need to figure out the equivalent apt-get to yum commands and ...
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1answer
171 views

How do I prevent crashing my ec2 micro instance mysql db?

I have an Amazon ec2 micro instance that holds a WordPress site. Since yesterday, my mysql db keep crashing saying: [ec2-user@ip-xxx-xx-xx-xxx ~]$ sudo service mysqld status mysqld dead but subsys ...
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1answer
192 views

OPENSSL_1.0.0 not found when running PyPy 4.0.1 on Amazon Linux (AWS EC2)

I want to run PyPy 4.0.1 on Amazon Linux (AWS EC2), and then downloaded and unzipped the tar.bz file. Also, I created the symbolic links to fix problems, such as pypy: error while loading shared ...
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94 views

could only be replicated to 0 nodes instead of minReplication (=1). There are 2 datanode(s) running and no node(s) are excluded in this operation

I am trying to run a hadoop map reduce job but getting below exception everytime 16/01/09 15:54:22 INFO mapreduce.Job: Task Id : attempt_1450793371170_0056_m_000001_0, Status : FAILED Error: org....
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1answer
82 views

AWS linux - How could I install postgreSQL on amazon linux?

I'm really beginner. I want to install postgreSQL on Amazon linux. Please let me know what I should type in regular sequence. I saw some of questions about installing postgreSQL on linux, but there ...
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0answers
22 views

OpenStack EC2 API url in API access tab

I want to configure open-stack ec2 API , such that the ec2 API url apears in API access tab in project settings as other urls appear , such as urls for other services. Do i need to install some plug-...
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171 views

Grey screen when using tightvnc and trying to run xfce4

I have an Amazon ec2 instance. I am attempting to run a dedicated arma 3 server on it. Part of this it to set up a repository on the server. The program I want to use requires a GUI. This is the ...
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1answer
165 views

Amazon [Ec2 Linux Instance] SSH not working after increasing Open Files / File Descriptors (FD)

I am not able to ssh my ec2 instance [linux based] after I have executed following command. [Before that I am able to ssh to server] # vim /etc/sysctl.conf I have update file-max number to 4000000 ...
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1answer
76 views

Why does Amazon Linux redirects port 80 to 3000?

I'm running a NodeJS/Express app in Amazon EC2. app.set('port', process.env.PORT || 80); http.createServer(app).listen(app.get('port'), function(){ console.log('Express server listening on port ' ...
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1answer
119 views

'This webpage is not available' after 'shutdown -r now'

I've been having some MySQL issues so I tried to restart my server with shutdown -r now. I can SSH into it, but any page I try to navigate to now returns: This webpage is not available ...
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1answer
142 views

Installing Firefox on EC2 using Lambda Linux Project

I'm trying to set up a nodejs+selenium server on ec2. I got node installed and working and I tried to set up Firefox using the tutorial here: https://lambda-linux.io/blog/2015/01/28/announcing-...
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30 views

Build fails as the Java not recognized (Amazon EC2)

My java path is set in .bashrc and we had to run source ~./bashrc when we run the build or the build fails saying java is not recognized . Any solution for this with out running the source bashrc ...
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38 views

Amazon EC2 gentoo CFLAGS

I have a gentoo running at Amazon EC2 m1.large instance. One instance have following CPU: model name : Intel(R) Xeon(R) CPU E5-2670 v2 @ 2.50GHz When i launched another m1.large instance in same ...
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1answer
213 views

Dovecot auto folder creation “Unknown setting: mailbox”

First off my dovecot info: $ dovecot --version 2.0.9 Running on an Amazon Linux AMI EC2 instance. I've added this in my /etc/dovecot/conf.d/10-mail.conf mail_location = maildir:/var/mail/virtual/%...
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0answers
1k views

ERROR: CHECK_NRPE: Socket timeout after 10 seconds

getting following error : # /usr/local/nagios/libexec/check_nrpe -H nagios-server-ip CHECK_NRPE: Socket timeout after 10 seconds. But it's working for localhost # /usr/local/nagios/libexec/...
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3answers
312 views

Accidentally port 22 got closed, how do I fix the SSH access?

Accidentally, Port 22 got closed. I cannot ssh into the instance, though the instance are running well on other desired ports. Getting following error while doing SSH. ssh: connect to host X.X.X.X ...
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25 views

Aws RDP cannot login after replacing EBS

I had an old ubuntu machine that i had XRDP installed on it , then i detached the EBS and created a new machine (Ubuntu also same version) and attached the old EBS to the new Ubuntu machine , but when ...
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58 views

Proxy Filtering with Squid

I am currently faced with a situation where i would like to deploy a proxy server on amazon EC2 running on Ubuntu. What i am trying to achieve is to have Wifi users in each site have their traffic ...
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76 views

installed font not working in ec2 in rails app

I have downloaded font by running wget http://www.fontsquirrel.com/fonts/download/amatic inside my ec2 instance. Then I created a .fonts director and unzipped those files inside it. Then I ls ....
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48 views

Ubuntu disk space issue [duplicate]

There is some anonymous space consumption on my disk having Ubuntu. When I run the command df -h it shows me that total consumption is 5.4G. But when I run command du -hscx * on / directory it shows ...
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1answer
36 views

Keeping services on EC2 alive

I'm using a MySQL database and Apache server with an AWS EC2 instance running AWS Linux. I start them both using the service command, but I am not familiar with any other tool that would come pre-...
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1answer
226 views

Valid root/user passwords not working on EC2

There is an authentication failure when I'm trying to enter password for any of my accounts after an update using yum. My authentication got broken, while everything else works. The updates were ...
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1answer
91 views

How do I download log4j on ec2 instance?

The link to download log4j is here. However I have logged into the my EC2 instance. Whats the command line to download this log4j ?
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1answer
38 views

Specific user's SSH-RSA with root access (via AWS EC2)

Is it possible to set up a specific SSH-RSA key (via another user i.e. "ec2-user") to have ability to sudo into root. I.e. You login with key to "Bob" (ec2-user). Currently user "Bob" can sudo ...
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0answers
62 views

How do I find out hard disk model and serial number in amazon machine?

when check in local machine /proc/scsi/scsi file it contains Attached devices: Host: scsi0 Channel: 00 Id: 00 Lun: 00 Vendor: ATA Model: ST3160215AS Rev: 3.AA Type: Direct-Access ...
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2answers
755 views

What is the difference between /sys/block/sda1/stat and /sys/block/xvda1/stat?

On my local machine, I have /sys/block/sda1/stat. On an Amazon machine, I have /sys/block/xvda1/stat. When I run cat /sys/block/sda1/stat or cat /sys/block/xvda1/stat both give 11 fields of output. ...
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1answer
156 views

How to change FTP home directory in Centos 6

I have created one Linux CentOS 6 instance in Amazon EC2 and installed cPanel on it and started running my websites there. The issue I face was when I try to FTP to the instance with the following ...
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250 views

etc/apt/sources.list contents for EC2 Instances upon AWS

When I copy an Ubuntu image between regions, the image is customised slightly in the process. Notably the software sources in /etc/apt/sources.list are altered to "local values". I am aware that ...
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1answer
366 views

AWS Outbound ACL Rules impact on incoming ssh connections

I am making a bastion ssh server on CentOS 7 in an AWS EC2 instance. When I use the following rules in its ACL, I am able to connect to the server just fine: Inbound Rules Allow traffic on port 22 ...