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• What is a good OS to mess around with Xen Dom0?

  - by earlz

  Hello, I'd like to experiment some with Xen. My problem is I do not know which OS to try to install it with. I use OpenBSD, but it can not run as Dom0 or DomU at this point. I use Arch Linux on my website's VPS, so I know it and like it. The support for Xen just doesn't seem to be there though. Can anyone suggest a nice (preferably lightweight, so not SUSE and such) Linux distro or *BSD to mess around with Xen in a non-production environment?

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• Linux server remounted to read-only

  - by Eustahije

  I have tried to find anwser on SF, but no luck. Nothing worked. (and I have just basic knowledge of linux systems - I'm more developer) Hour ago I noticed that database is not reacting anymore. From some reason system went to readonly mode. Complete server is now, ofc, unavailable. Server is VPS in Dutch company, and have no idea what I can do with it now to unlock it. Every suggestion would be more then appriciated. I tried to save as much of database as possible but there are 20G of images, that would be hard to backup, but I can do that also, if that is something that is smart to do.

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• pam_ecryptfs: Error getting passwd (ProFTPD)

  - by Olirav

  proftpd: pam_ecryptfs: Error getting passwd info for user [USERNAME] I am getting this error in the syslog nearly every time any user connects via FTP, the user is able to connect and the session seems to continue without a hitch. ProFTPD.log shows no error, this warning only show in the syslog. My VPS is running Ubuntu 11.10 and Proftpd 1.3.4rc2 from the Ubuntu Repo, I have made only a few changes to the config (no weird auth methods). This has been going on for quite a while but I can't quite find the cause. Anyone got any ideas? EDIT: been looking around but all I can find with this error is the source code for the program itself; it appears to be and error in ecryptfs-utils that only proftpd is triggering.

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• Virtualmin - Added Virtual Server - Stopped access to Rails app?

  - by Dan

  Hi, Sorry if this sounds pretty simple, I'm new to Virtualmin and running servers in general. I recently purchased a VPS and installed Virtualmin with no problems. I then installed mod_rails and uploaded my first rails app, which I got working by adding the following to my apache httpd.conf file: <VirtualHost *:80> ServerName testing.mydomain.com DocumentRoot /home/myapp/public <Directory /home/myapp/public> Allow from All AllowOverride all Options -MultiViews </Directory> RailsBaseURI / </VirtualHost> I then tried adding a virtual server through Virtualmin, using mydomain.com. Now, the site this created (plus several sub-servers) and working as expected. However, my original Rails app is no longer accessible. The URL now sends me to the parent application (ie mydomain.com) The Rails app is not located within the parent's application directory, would this be a problem? Can anyone help? Any advice appreciated. Thanks.

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• Recommendation for email setup for programatically sending lots of emails

  - by jcmoney

  To clarify I have an app that notifies users via email when certain actions take place (I am not spamming as the user has opted in to the notifications and can change that option at any time). Because of number of emails that needs to be sent, Gmail, Yahoo, etc will not work. Unless I am mistaken services like MailChimp, Lyris, etc will also not fit this need since every email is sent one at a time and is very specific to the user and action that took place. What I really want is something that would allow me to be able to call some mail function, give it a recipient, from, message and subject, and not have it be blocked by the email service. This can be a free or paid service. I have server access so I can install something if necessary as well but I don't know much about email services and fear if I do it myself, I'll get blocked by some other player like my VPS host or ISP or something.

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• Django, wsgi, py. what's the difference?

  - by Kenny

  I'm trying to get a django application up and running on my cpanel system. I've installed mod_wsgi, and am following the guide here: http://www.nerdydork.com/setting-up-django-on-a-whm-cpanel-vps-liquidweb.html However, I'm now confused as I don't know what to do next. The application has .py files, and I am able to run it via this: python manage.py runserver 211.144.131.148:8000 However, that's via command line and binds to port 8000. I want to use Apache instead. The question is, that tutorial doesn't go further into how to get apache to recognize .py files and run the application as I want it. What do I do next?

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• Sending SPAM free mail through my website

  - by Sara

  Hi, I've been battling with this issue for couple of months. I need to send bulk mail (not spam) through my social network to users in situations like newsletters, site invitations (when user imports their address book contacts) I'm using shared hosting and it limits 500 mails per hour. Even though i manage to send mails most of them end up in user's spam box. After researching these are the solutions that i finally came up with. 1) Use Google Apps SMTP (http://www.google.com/apps/intl/en/business/features.html) 2) Move into VPS 3) Use shared hosting with throttle enabled Please advise me on what to choose. Will using Google Apps prevent mail being sent as spam? I can't use other 3rd party SMTP like iContact or Aweber as "invitation sending script" will send emails to thousands of contacts, depending on user's addressbook. Thanks in advance

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• How can I configure a NameCheap domain to point to an Apache subfolder? [closed]

  - by Serg

  Possible Duplicate: How to make domain point to another web directory? My boss just bought the domain: sergiotapia.me for me, and agree'd the host my Wordpress blog on company servers. We're using Apache (latest version). The domain is purchased on NameCheap.com and the DNS settings are as follows: And when I visit my URL, it's getting redirected to my VPS server without problems. The thing is, I want my blog to appears at once, not have a user select the folder and then see the blog. My Wordpress blog is located at: /var/www/sergiotapia.me On IIS, you would need to edit the Bindings and map a domain to an application. I'm guessing I have to do something similar on Apache. What am I looking for here? Any tips on getting this working correctly?

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• serving static assets via http is really slow compared to sshfs (apache2/nginx)

  - by s1lv3r

  After migrating to a new VPS I had some users complaining about slow loading images on their sites. After creating some test files with dd I realized that I can download all files via sshfs with full speed while downloads via web are painfully slow. The larger the file is and the longer the transfer takes, the slower the transfer speed gets. I thought I had some problems with Apache and just spend the whole evening with replacing Apache2 against nginx for static file serving - with no effect at all. No I/O wait states in top. Tons of RAM free, no high CPU utilization and hdparm shows a decent I/O performance at all times. I just have no idea anymore, what's happening on this server. This is a link to a demo file: http://master.dealux.de/file.tgz Anybody an idea what I can check out?

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• Hosting multiple sites on a single webapp in tomcat

  - by satish

  Scenario: I have a website - www.mydomain.com. Registered users will be given the choice of getting a permanent url to their account on mydomain.com as a subdomain like (username.mydomain.com) or they can opt to have their own domain like www.userdomain.com. So the user can access his/her account through the subdomain URL or their own hostname and the request should be forwarded to a specific url on mydomain.com. For example: xyz.mydomain.com or www.xyz.com should give the user account from www.mydomain.com/webapp/account?id=xyz. The user should be completely unaware about where the content is coming from. Setup: My website is running as a webapp in tomcat 5.5.28 with apache as the web server. I am using a VPS which means I have control over all the configuration files (apache, tomcat and dns server). Can you tell me what are the configurations needed to achieve the above scenario??

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• Is there any way to recover files in /usr/local directory on Ubuntu?

  - by Ilya

  We are running Ubuntu server on VPS. Some files were removed accidentally by placing unnecessary space this command: rm -r /usr/local <directory to be deleted> I know, that in most cases this directory is used by packages to place some part of their content. Is there any where to recover deleted files and directories? I suppose, that theoretically it should be possible. Some software can look through the list of installed packages, check presence of files in file system and recover or reinstall corrupted packages if their file are missing in /usr/local.

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• Hosting multiple sites on a single webapp in tomcat

  - by satish

  Scenario: I have a website - www.mydomain.com. Registered users will be given the choice of getting a permanent url to their account on mydomain.com as a subdomain like (username.mydomain.com) or they can opt to have their own domain like www.userdomain.com. So the user can access his/her account through the subdomain URL or their own hostname and the request should be forwarded to a specific url on mydomain.com. For example: xyz.mydomain.com or www.xyz.com should give the user account from www.mydomain.com/webapp/account?id=xyz. The user should be completely unaware about where the content is coming from. Setup: My website is running as a webapp in tomcat 5.5.28 with apache as the web server. I am using a VPS which means I have control over all the configuration files (apache, tomcat and dns server). Can you tell me what are the configurations needed to achieve the above scenario??

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• Changing startup parameters for MySQL

  - by RN

  I need to remove skip-networking from MySQL startup parameters I am running MySQL on Linux on Centos on a VPS Can someone please tell a newbie how to do this ? I suppose to start and stop the mySQL server, I have to do something like this /etc/init.d/mysqld stop /etc/init.d/mysqld start ps -ef|grep 'mysql' root 11331 20220 0 10:53 pts/0 00:00:00 grep mysql root 32452 1 0 Apr02 ? 00:00:00 /bin/sh /usr/bin/mysqld_safe --skip-grant-tables --skip-networking mysql 32504 32452 0 Apr02 ? 00:00:18 /usr/libexec/mysqld --basedir=/usr --datadir=/var/lib/mysql --user=mysql --pid-file=/var/run/mysqld/mysqld.pid --skip-external-locking --socket=/var/lib/mysql/mysql.sock --skip-grant-tables --skip-networking

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• idle proccesses and high memory bad? uwsgi/django

  - by JimJimThe3rd

  I have a VPS with 256MB of ram. I'm running nginx, uwsgi and postgresql on Ubuntu 12.04 for a soon to be Django site. About 200MB of ram are being used despite the website not being active, the uwsgi processes seem to just be idling. Is this bad? I once heard that having a bunch of free memory isn't necessarily a good metric because it is possible that the memory in use can easily be freed up. I mean, it is possible that the server is storing commonly used "stuff" in case it is accessed but is more than happy to dump it if the ram is needed. But I'm really not sure, hence me asking this question. If it is bad I could set some of the application loading options for uwsgi like "cheap" or "idle" mode. Screenshot of my htop

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• Apache2 memory usage when uploading large files

  - by abhaga

  Hi, I am running apache2.2.12 along with PHP 5.2.10. PHP is configured to run as a separate process through fcgid. The problem is that when users upload a file, size of the apache process swells by almost the same amount. So if somebody tries to upload a 200 MB file, one of the child process swells to current size+200 MB. If 2 users simultaneously start uploading, my server crashes. Now it is the virtual memory size which is increasing but since I am on a OpenVZ based VPS, that is what counts. My questions are: Is it the normal Apache behavior or can I do something to fix this? If not, is there a more memory efficient way of handling big file uploads. Going by the current behavior, I will need 1 GB of free RAM for every apache child accepting a upload. Thanks! Abhaya -

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• How do I securely execute commands as root via a web control panel?

  - by Chris J

  I would like to build a very simple PHP based web based control panel to add and remove users to/from and add and remove sections to/from nginx config files on my linode vps (Ubuntu 8.04 LTS). What is the most secure way of executing commands as root based on input from a web based control panel? I am loathe to run PHP as root (even if behind an IP tables firewall) for the obvious reasons. Suggestions welcome. It must be possible as several commercial (and bloated, for my needs) control panels offer similar functionality. Thanks

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• Mounting FTP as filesystem in debian using curlftpfs

  - by Karel Bílek

  I am trying to mount a FTP as filesystem in debian using curlftpfs. What I get after running curlftpfs -o allow_other username:[email protected] /mnt/myftp/ is just: fuse: failed to open /dev/fuse: Permission denied even when run as root. What am I doing wrong? (curlftpfs is in version curlftpfs 0.9.2 libcurl/7.21.0 fuse/2.8) edit: When I write ls -lah /dev/fuse, I see crw-rw---- 1 root fuse 10, 229 Apr 9 00:34 /dev/fuse ...but even when I add both myself and user root to group fuse, neither me (as a user) or user root can mount ftp, I still see fuse: failed to open /dev/fuse: Permission denied edit2: Even if I write this fairly insecure and crazy line: sudo chmod a+rwx /dev/fuse I still get the permission denied message. Which permissions could be denied? edit3: I forgot to mention I am on VPS with OpenVZ. I thought that there is no issue with this, but apparently, there is! I am adding the resolution as the answer.

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• Getting PHP to work with apache to run .php files through browser

  - by Kevin Duke

  I have VPS running Debian 5.0 (I think) and I would like to get it to run PHP files. I was told it needed to be configured with Apache. I tried entering the command apt-get install apache2 php5 libapache2-mod-php5. But there was no change. Console output: http://pastebin.com/sVMWq6mA This is everything in my /etc/apache2/mods-enabled: http://img35.imageshack.us/img35/6474/modsb.jpg My webserver can be accessed here: http://206.217.223.136/test/ In my test.php file I have the code : <?php phpinfo(); ?> but instead of displaying the page, it tries to download it. How can I fix this?

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• How to refresh open source software pkg manager on oldish OpenSolaris?

  - by Luke404

  I'm being presented with an OpenSolaris vps, actually a Solaris Container, which is based on SXCE snv_121 and is active since mid 2007: the good old Sun days, IIRC even before the Indiana stuff! For various reasons the system itself can't be rebuilt/upgraded but we can do whatever we want with the additional package manager on it. My Solaris skills and especially knowledge of the free package managers ecosystem is a bit rusty so I don't know what I can actually use while keeping the somewhat oldish base system. Currently there is pkg-get using some older Blastwave mirror, it has been used to install things such as Apache2, PHP, Python, Nagios. I would like to remove all the old rusty stuff and all of Blastwave, and start fresh with some newer package distribution. Can the current Blastwave system be used on that snv_121? Is there any better alternative still compatible with that system (eg. OpenCSW or anything else) ?

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• Network vulnerability and port scanning services

  - by DigitalRoss

  I'm setting up a periodic port scan and vulnerability scan for a medium-sized network implementing a customer-facing web application. The hosts run CentOS 5.4. I've used tools like Nmap and OpenVAS, but our firewall rules have special cases for connections originating from our own facilities and servers, so really the scan should be done from the outside. Rather than set up a VPS or EC2 server and configuring it with various tools, it seems like this could just be contracted out to a port and vulnerability scanning service. If they do it professionally they may be more up to date than something I set up and let run for a year... Any recommendations or experience doing this?

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• PHP shell_exec times out, but not when executed manually

  - by Breck Fresen

  I have a Windows 2008 server with PHP and msys installed. I also have a simple php script that calls shell_exec and tars a few files. When I run the script on my development machine (Windows 7), it works fine. However, when I run it on the Windows 2k8 server, it times out. When I copy and paste exactly what's being run on the cmd line and run it, it executes w/out error in less than a second. One more important detail: when I shell_exec 'dir' or 'netstat', the script runs without any problems. When I shell_exec 'ls' it hangs. When I run ls on the command line, it returns immediately. Other details that might be useful: The Windows 2k8 server is a VPS hosted by Rackspace. I did vanilla installs of Apache, PHP, and msys, but I haven't installed anything else. When I run whoami, I see the php script is executing as the user "nt authority\system".

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• Invalid operation dist-ugprade

  - by drdarwin

  i'm running Apache 2 on Debian at my VPS. Naturally i have problem with restricted GD-library of my php package and i need to fix it (i need imagerotate() function). Before installing php-gd pugin it's necessary to update php 5.2 to php 5.3 my /etc/apt/sources.list is: #deb http://ftp.ru.debian.org/debian/ lenny main contrib non-free #deb http://security.debian.org lenny/updates main contrib non-free #deb http://ftp.ru.debian.org/debian lenny main #deb-src http://volatile.debian.org/debian-volatile lenny/volatile main contrib deb http://packages.dotdeb.org stable all deb-src http://packages.dotdeb.org stable all The problem comes after apt-get dist-ugprade executing: /$ apt-get update Hit http://packages.dotdeb.org stable Release.gpg Hit http://packages.dotdeb.org stable Release Ign http://packages.dotdeb.org stable/all Packages/DiffIndex Ign http://packages.dotdeb.org stable/all Sources/DiffIndex Hit http://packages.dotdeb.org stable/all Packages Hit http://packages.dotdeb.org stable/all Sources Reading package lists... /$ apt-get dist-ugprade E: Invalid operation dist-ugprade What can cause this problem? How much should i wait while Reading package lists...? Is there any simple guideline for further php-gd installation?

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• Changing IP every sec with Firefox

  - by Carol

  I looking for ip changer what is faster than PROXY (i tried Elite Proxy Switcher + Firefox add-on, but it's too slow. I set automatic switching to 4 sec and yes he change the ip every 4 sec however it's not enough because it loads pages very slowly.) Secondly I tried the TOR Project but this is not good..because the TOR would be nice and working good however he needs more than 10 seconds, a new identity and it's not to good for me because i want to change my ip lass than 10 sec. So I find the solution. This is IPfucker alias ipFlood (https://addons.mozilla.org/en-us/firefox.../ipflood/) But it does not work on all sites unfortunately...because this is just simulation "Simulate the use of a series of proxy changing at each new connection.". Anyone knows a solution to the problem? Is there an alternative (VPS, Proxy, TOR)? Thanks in advice.

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• Can't seem to install the correct version of PHP, using apt-get install

  - by Mark Tomlin

  I'm using Ubuntu 11.04 LTS server, it's a new install on a VPS box from MediaTemple (their ve server). I'm trying to install PHP 5.4.3 on this box, but I'm having a common problem not matter what version I get. I'm trying to get the php-cgi process, so I do the command apt-get install php-cgi and that installs, but does not provide me with the php-cgi executable. I need this so that I can run php-cgi -b 127.0.0.1:9000 and have it has a FastCGI process for my nginx install. Any idea what I can do to get this to work, bonus points if you can get this to work with PHP 5.4.3, because all I can seem to install is PHP 5.3.5.

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• What happens to running processes when I lose a remote connection to a *nix box?

  - by David Marble

  I occasionally lose my remote SSH connection to my VPS. I use screen for long-running processes, but am wondering what happens to the processes I had running aside from those run within a screen session if I lose the connection to the box. When I re-establish a connection to the box, what happened to the bash and sshd processes that were running when I lost the connection? Today I lost connection repeatedly and noticed many more bash and sshd processes than usual. If there are processes hanging around, do I need to kill them? How could I determine which processes were abandoned from my previous session? Thanks for any replies!

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