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• On AWS EC2, Unable to run sudo command after modifying permissions to /usr folder

  - by Kayote

  All, We have searched quite a bit and a few of 'Eliah Kagan's' posts are great about getting access back to sudo. However, our server is on AWS EC2 & I am a complete newbie to this. We are trying to setup Cronjobs for backing up our server data. What we did: Using Putty, we created a script file: usr/share/site-db-backup/backupToS3.php, however, Ubuntu was not saving the changes we made as it reported we did not have permission as user 'Ubuntu'. Error details are: "Upload of file backupToS3.php was successful but error occurred while setting the permission &/ or timestamp. If the problem persists, turn on 'ignore permission errors' option. Permission denied. Error code: 3 Request code 9" So, we ran the command "sudo chmod -R a+rwx /usr" for granting permission to the folder 'usr'. However, now whatever sudo command is run, we get the error: "/usr/lib/sudo/sudoers.so must be only be writable by owner. fatal error, unable to load plugins." We are complete newbies to Ubuntu & EC2 so do need step by step guidance of how to get sudo back & successfully write to the Crontab script sitting in 'usr/' folder.

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• Where should you put constants and why?

  - by Tim Meyer

  In our mostly large applications, we usually have a only few locations for constants: One class for GUI and internal contstants (Tab Page titles, Group Box titles, calculation factors, enumerations) One class for database tables and columns (this part is generated code) plus readable names for them (manually assigned) One class for application messages (logging, message boxes etc) The constants are usually separated into different structs in those classes. In our C++ applications, the constants are only defined in the .h file and the values are assigned in the .cpp file. One of the advantages is that all strings etc are in one central place and everybody knows where to find them when something must be changed. This is especially something project managers seem to like as people come and go and this way everybody can change such trivial things without having to dig into the application's structure. Also, you can easily change the title of similar Group Boxes / Tab Pages etc at once. Another aspect is that you can just print that class and give it to a non-programmer who can check if the captions are intuitive, and if messages to the user are too detailed or too confusing etc. However, I see certain disadvantages: Every single class is tightly coupled to the constants classes Adding/Removing/Renaming/Moving a constant requires recompilation of at least 90% of the application (Note: Changing the value doesn't, at least for C++). In one of our C++ projects with 1500 classes, this means around 7 minutes of compilation time (using precompiled headers; without them it's around 50 minutes) plus around 10 minutes of linking against certain static libraries. Building a speed optimized release through the Visual Studio Compiler takes up to 3 hours. I don't know if the huge amount of class relations is the source but it might as well be. You get driven into temporarily hard-coding strings straight into code because you want to test something very quickly and don't want to wait 15 minutes just for that test (and probably every subsequent one). Everybody knows what happens to the "I will fix that later"-thoughts. Reusing a class in another project isn't always that easy (mainly due to other tight couplings, but the constants handling doesn't make it easier.) Where would you store constants like that? Also what arguments would you bring in order to convince your project manager that there are better concepts which also comply with the advantages listed above? Feel free to give a C++-specific or independent answer. PS: I know this question is kind of subjective but I honestly don't know of any better place than this site for this kind of question. Update on this project I have news on the compile time thing: Following Caleb's and gbjbaanb's posts, I split my constants file into several other files when I had time. I also eventually split my project into several libraries which was now possible much easier. Compiling this in release mode showed that the auto-generated file which contains the database definitions (table, column names and more - more than 8000 symbols) and builds up certain hashes caused the huge compile times in release mode. Deactivating MSVC's optimizer for the library which contains the DB constants now allowed us to reduce the total compile time of your Project (several applications) in release mode from up to 8 hours to less than one hour! We have yet to find out why MSVC has such a hard time optimizing these files, but for now this change relieves a lot of pressure as we no longer have to rely on nightly builds only. That fact - and other benefits, such as less tight coupling, better reuseability etc - also showed that spending time splitting up the "constants" wasn't such a bad idea after all ;-)

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• Login error in phpMyAdmin, problem setting auth_type in config.inc.php

  - by sergiom

  I'm having a problem accessing phpMyAdmin. A few weeks ago I did succeed configuring it for auth_type = 'cookie', but I still receive an error stating that I should have to set blowfish_secret. That was strange because it was set. So I changed auth_type from cookie to http, but it didn't work. I changed it back to cookie, but it doesn't work anymore. this is the error. phpMyAdmin - Error Cannot start session without errors, please check errors given in your PHP and/or webserver log file and configure your PHP installation properly. this is my C:\wamp\apps\phpmyadmin3.2.0.1\config.inc.php <?php /* Servers configuration */ $i = 0; /* Server: localhost [1] */ $i++; $cfg['Servers'][$i]['verbose'] = 'localhost'; $cfg['Servers'][$i]['host'] = 'localhost'; $cfg['Servers'][$i]['port'] = ''; $cfg['Servers'][$i]['socket'] = ''; $cfg['Servers'][$i]['connect_type'] = 'tcp'; $cfg['Servers'][$i]['extension'] = 'mysqli'; $cfg['Servers'][$i]['auth_type'] = 'cookie'; $cfg['Servers'][$i]['user'] = ''; $cfg['Servers'][$i]['password'] = ''; $cfg['Servers'][$i]['AllowNoPassword'] = false; $cfg['Servers'][$i]['blowfish_secret'] = 'this is my passphrase'; /* End of servers configuration */ $cfg['DefaultLang'] = 'en-utf-8'; $cfg['ServerDefault'] = 1; $cfg['UploadDir'] = ''; $cfg['SaveDir'] = ''; ?> I changed the blowfish_secret, since I don't remember the old one, and I deleted the cookies in my browser and restartd all wamp services and the browser. After I enter username and password in the login page I get the error. I've tried searching into the log files, but I'm a newbie and I'm not sure I've searched the right ones. I'm using Wamp server 2.0 that has Apache Version : 2.2.11 PHP Version : 5.3.0 MySQL Version : 5.1.36 phpmyadmin : 3.2.0.1

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• Using URL rewrite module for http to https redirect

  - by johnnyb10

  Following ruslany's suggestion on the URL Rewrite Tips page here, I'm trying to use URL Rewrite to redirect http:// requests for my site to https://. I've written and tested the rule using a test site I set up, and so now the final piece is to create a second site (http) to redirect to my https site. (I need to use a second site because I don't want to uncheck the "Require SSL encryption" checkbox on my existing site.) I'm an IIS newbie so my question is: how do I do this? Should I create a site with the same name and host header, only it will be bound to http? Will IIS let me create a site with the same name? I don't want to screw anything up with my existing site (which is a SharePoint site, currently used by external users). That site currently has http and https bound to it. So my assumption is that, using ISS (not SharePoint), I will create a new site (http only) with the same name and host header as my existing site, and add the URL Rewrite rule to the http site. And then I guess I should remove the http binding from my existing site? Does that seem correct? Any advice, gotchas, etc., would be appreciated. Thanks.

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• Connect to WEP Wireless Network by command line on Ubuntu

  - by Tim

  Hi, I am a newbie to both network and Linux. I am now trying to connect to a WEP wireless network by command line on my Ubuntu 8.10, because the Network Manager does not support 64 bit WEP. (1) I firstly bring down the Network Manager and then try to connect to a wireless network, whose essid is candy and password is 5673212741. But it fails as shown in the following. I wonder why and how to do it correctly? $ sudo /etc/init.d/NetworkManager stop * Stopping network connection manager NetworkManager [ OK ] $ sudo iwconfig wlan0 essid candy opendo iwconfig wlan0 key 18018ce78e open $ sudo iwconfig wlan0 key 5673212741 open $ sudo dhclient wlan0 There is already a pid file /var/run/dhclient.pid with pid 9971 killed old client process, removed PID file Internet Systems Consortium DHCP Client V3.1.1 Copyright 2004-2008 Internet Systems Consortium. All rights reserved. For info, please visit http://www.isc.org/sw/dhcp/ wmaster0: unknown hardware address type 801 wmaster0: unknown hardware address type 801 Listening on LPF/wlan0/00:0e:9b:cd:4e:18 Sending on LPF/wlan0/00:0e:9b:cd:4e:18 Sending on Socket/fallback DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 7 DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 12 DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 20 DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 13 DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 9 No DHCPOFFERS received. No working leases in persistent database - sleeping. $ ping www.bbc.co.uk ping: unknown host www.bbc.co.uk (2) A less important question: why the scan for wireless networ does not work after I bring down the Network Manager? $ sudo /etc/init.d/NetworkManager stop * Stopping network connection manager NetworkManager [ OK ] $ sudo iwlist wlan0 scan wlan0 Interface doesn't support scanning : Network is down Thanks and regards!

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• debugging connection to mysql from python script using MySQLdb

  - by timpone

  I am a python newbie and have a python 2.5 script that is using MySQLdb to connect on OS X 10.5.8. I haven't been able to succesfully connect to the database of interest with this. However, I am able to connect using php's mysqli and also via the mysql cli interface. I get the error: File "build/bdist.macosx-10.5-i386/egg/MySQLdb/connections.py", line 188, in __init__ _mysql_exceptions.OperationalError: (1045, "Access denied for user 'arc_development'@'localhost' (using password: YES)") On my linux box which has the same mysql perms, the script works fine logging in. On my OS X laptop, I am able to create a database named test_python which bypasses mysql authentication scheme. This makes me think that issues like 32bit / 64bit incompatabilities aren't occuring. If I turn on the query log, I get access denied: 100610 20:56:55 4 Connect Access denied for user 'arc_development'@'localhost' (using password: YES) I'm a little bit at a loss to what to do next. Is there any way I can specify in the general log or binary log to get the actual password set on the connection string? How about writing out from connections.py file the value (although not sure how I'd do that)? thanks

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• Using URL rewrite module for http to https redirect

  - by johnnyb10

  Following ruslany's suggestion on the URL Rewrite Tips page here, I'm trying to use URL Rewrite to redirect http:// requests for my site to https://. I've written and tested the rule using a test site I set up, and so now the final piece is to create a second site (http) to redirect to my https site. (I need to use a second site because I don't want to uncheck the "Require SSL encryption" checkbox on my existing site.) I'm an IIS newbie so my question is: how do I do this? Should I create a site with the same name and host header, only it will be bound to http? Will IIS let me create a site with the same name? I don't want to screw anything up with my existing site (which is a SharePoint site, currently used by external users). That site currently has http and https bound to it. So my assumption is that, using ISS (not SharePoint), I will create a new site (http only) with the same name and host header as my existing site, and add the URL Rewrite rule to the http site. And then I guess I should remove the http binding from my existing site? Does that seem correct? Any advice, gotchas, etc., would be appreciated. Thanks.

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• Understanding !d command in sed with respect to saves

  - by richardh

  I have a directory of tab-delimited text files and some have comments in the first few lines that I would like to delete. I know that the first good line starts with "Mark" so I can use /^Mark/,$!d to delete these comments. After this deletion I have several other replacements that I make in the (new) first line that has variable names. My question is, why do I have to save sed's output to get my script to work? I understand that if I line is deleted, then the output doesn't proceed downstream because there is no output. But if I don't delete (i.e., !d) then why do I have to save to file? Thanks! Here is my shell script. (I'm a sed newbie, so any other feedback is also appreciated.) #!/bin/bash for file in *.txt; do mv $file $file.old1 sed -e '/^Mark/,$!d' $file.old1 > $file.old2 sed -e '1s/\([Ss]\)hareholder/\1hrhldr/g'\ -e '1s/\([Ii]\)mmediate/\1mmdt/g'\ -e '1s/\([Nn]\)umber/\1o/g'\ -e '1s/\([Cc]\)ompany/\1o/g'\ -e '1s/\([Ii]\)nformation/\1nfo/g'\ -e '1s/\([Pp]\)ercentage/\1ct/g'\ -e '1s/\([Dd]\)omestic/\1om/g'\ -e '1s/\([Gg]\)lobal/\1lbl/g'\ -e '1s/\([Cc]\)ountry/\1ntry/g'\ -e '1s/\([Ss]\)ource/\1rc/g'\ -e '1s/\([Oo]\)wnership/\1wnrshp/g'\ -e '1s/\([Uu]\)ltimate/\1ltmt/g'\ -e '1s/\([Ii]\)ncorporation/\1ncorp/g'\ -e '1s/\([Tt]\)otal/\1ot/g'\ -e '1s/\([Dd]\)irect/\1ir/g'\ $file.old2 > $file rm -f $file.old* done

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• linux routing issue

  - by Duc To

  Hi! I have 2 linksys routers which has linux running on it and using tomato firmware.. both has internet lines plugged on but only 1 acts as DHCP server (router 1) What I am having to achieve is that all packets goes to router 1 from internal IPs want to access internet will go out to that internet line but from 1 specific port, if router 1 detects packets from a specific source port (for ex: http port: 80), it will redirect that packet to router 2 and goes out to the internet from there.. I have found some documents which give solution that I will need a linux servers with 2 ethernet cards and then we plug both internet lines on that server and routing base on it but I do not want to do that because my boss does not want to have an extra work mantaining that server, besides, he says that the router itself already a linux one so why.. I tend to agree his points.. Can it be done or a seperate linux server acting as a router is a must? Thank you all in advance and really look forward in your replies.. I am newbie to linux network and it seems to be something out of my capacity to solve :( Your sincerely! Duc To

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• Is Ubuntu a viable replacement of Windows XP for small enterprise environments?

  - by Alex. S.

  Hi all, I'm a newbie systems administrator, so any advice would be great. I would like to setup ubuntu 8.04 lts in a small office of consulting in management (around 50 workstations) instead of Windows XP. I would install MS Office 2007 via WINE (*). It would be a fresh installation, so the migration would be less of a pain. The new setup would also include a small server as document repository and a backup server by now. Later, I would install another goodies like a IM server, a document management solution, and whatnot collaborative tool. What do you advice in this scenario? Do you think is viable? Should I try to convince my managers this is a good idea? I consider myself as a fair experienced user in both systems, and I'm the only guy in charge of everything. I need to cut costs down, and I think that antivirus and antimalware software are a waste of money and time. Is this good idea?, or should I resign and try to lock down the Windows systems and install AV software? Is there anything else in this setup I'm not foreseeing? (*) The only catch in my test machine until now had been that Office SmartArt doesn't work properly, the rest of Office 2007 may seem ok.

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• What does this example bash startup script do?

  - by Dimitri

  I am trying to set up GNU Octave on my computer (Mac OS X 10.7.4). I am newbie in using Terminal and I need help to understand what the following script actually does: if [ -f ~/.bashrc ];then<br> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;. ~/.bashrc<br> fi<br> PATH=$PATH:/usr/local/bin<br> BASH_ENV=~/.bashrc<br> export BASH_ENV PATH<br> export GNUTERM=aqua<br> alias octave="/Applications/Octave.app/Contents/Resources/bin/octave"<br> alias gnuplot="/Applications/Gnuplot.app/Contents/Resources/bin/gnuplot"<br> (taken from here: http://wikibox.stanford.edu/me112/index.php/Main/OctaveMatlabNotes) So this script begins with the simple conditional if statement. I don't understand the conditional expression - what is -f and .bashrc? What the statement . ~/.bashrc actually does? Then 2 variables are defined PATH and BASH_ENV. Why are they exported? Why GNUTERM=aqua is exported even if it's not defined anywhere? All I need is a script that would allow me to run Octave by simply typing octave in the terminal. I don't need an alias for the gnu plot. Thanks

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• Getting Started in SuSE as an Ubuntu User

  - by Subhamoy Sengupta

  I am not a Linux newbie, but haven't touched SuSE in a very very long time (last time I tried it, it was SuSE 7!). Finally now I felt like giving it a try, and many things seem strange or unnecessarily complex. I have a series of questions. How do I ensure that my packages are uptodate? It sounds silly, but I tried the obvious methods already. I have disabled the default repositories that show up when you do zypper lr, and added Tumbleweed and packman repositories (Essentials, Multimedia, Extra). Then I did a sudo zypper ref --force and then sudo zypper dup, and it tells me many dependencies are not met. I have already added solder.allowVendorChange=true to /etc/zypp/zypp.conf, so it should not care which repository the latest versions are in, and just upgrade to it. Even when I chose to skip the packages with unmet dependencies, and seemed like quite a bit happened in the background, I opened Firefox afterwards and the version was 7! I am guessing things did not go as expected. But of course this is not a problem with SuSE, but I am not understanding the system right. How do I do it right? When I start typing arguments of a command, for example sudo zypper install, when I type sudo zypper ins and keep hitting TAB, nothing happens! It always worked in Ubuntu and I feel very uneasy with this. Is this how SuSE is supposed to be? When I try to install something, and I start writing its name, even though the package exists and I am sure of it, hitting TAB does not autocomplete it. This is also quite inconvenient. Why is it not happening? There are many things in SuSE that are really great, and I think I will stay with it and not go back to Ubuntu once I settle these very rudimentary issues. But right now they are giving me a lot of grief! Please help!

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• Tables in the SQL Server "master" database, will they cause problems?

  - by pepoluan

  Folks, please be kind on me... I'm just an 'accidental' DBA due to our DBA resigned, so I'm totally a newbie in DBA... You see, I have this application, "ESET Remote Administration Server" (ERAS) that stores its logs and analysis on (originally) a local Access database. The decision was to migrate its database to a SQL Server 2008 R2 machine. ESET (the maker of the software) helpfully provided tools to perform such migration; unfortunately, being the DBA neophyte that I am, I didn't realize that I have to first create my own database (on the SQL Server side) and assign that database as the 'default' database for ERAS' ODBC connection. Now, the migration tool had successfully created a whole bunch of tables inside the "master" database. My questions: Should I leave things be as it is, or should I re-migrate the ERAS database to a different database? If you suggest me perform a re-migration, my plan is to (1) create a new instance, (2) create a new database within the new instance, (3) create a new ODBC System DSN on the ERAS server pointing to the new DB in step 2, (4) use ESET's migration tool to migrate from the current DSN to the new DSN. Do you think I missed a step there? Thanks beforehand for any guidance.

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• Connection between Asp.Net and Oracle 10g Express Edition

  - by l3gion

  Hello, I'm struggling to find a way to connect my Asp .Net + C# application with my Oracle 10g Express Edition. Here's my scenario, I'm at Mac OS and I have 2 Virtual machines, one for Win 7 (VS 2010 app) and another with a Parallels Virtual Appliance with Oracle 10g Express Edition 1.1. Which provider (Oledb, ODP.NET, etc..) should I use? How to make the connection to the server in C#? Right now I have this: <appSettings> <add key="conn" value="Data Source=10.211.55.11;Persist Security Info=True;User ID=l3gion;Password=l3gion;" /> </appSettings> And at the .cs file: SqlCommand cmd = new SqlCommand("insert_thing", new SqlConnection(ConfigurationManager.AppSettings["conn"])); cmd.CommandType = CommandType.StoredProcedure; *insert_thing is a stored procedure Using this I got this error: A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server) I've searched for some possible solutions. Tried some, including: firewall disabled, allow remote connection at oracle express edition using this cmd line ("EXEC DBMS_XDB.SETLISTENERLOCALACCESS(FALSE);").. The error persists. Can anyone guide me into the right direction? I'm a newbie with this type of things. Thank you for your patience. regards

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• postfix test and configuration problem

  - by Woho87

  Hi Guys! I installed postfix using sudo yum install postfix postfix-mysql. I'm newbie to mail systems, but I have one AMAZON EC2 instance with a public DNS. I used the public DNS in most cases, when I configured the file main.cf. The public DNS I have is from amazon and it is a long string(ec2-123-34-234-677.....amazon.com). // I configured this on main.cf. I replaced example.com with ec2-123-.......amazon.com myhostname = mail.example.com mydomain = example.com myorigin = $mydomain mydestination = example.com, $transport_maps local_recipient_maps = $alias_maps $virtual_mailbox_maps unix:passwd.byname home_mailbox = Maildir/ How do I test postfix? I just want it to send emails for my web application. I tried to test it with >telnet localhost 25 after I typed in SSH >sudo postfix start. but I recieve the message that telnet command can not be found. I also use the Amazon linux distribution if you want to know. I use it because it is free. What have I done wrong? Are there anymore configurations required pls help!

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• Configuration of Server root email - Change Address and Name on outgoing email

  - by JTWOOD

  As a newbie Postfix user, I've gotten so far and now I am stuck with a SMALL problem. I would like to configure my local network servers to send alerts and like using the following: 1) From address: [email protected] 2) From name: Hostname I can get #1 to work fine using smtp_generic_maps The problem is that on my email client, the name is listed as "root" - as in the header shows the following: Date: Sun, 29 Jul 2012 13:21:01 -0400 (EDT) From: [email protected] (root) To: undisclosed-recipients:; I'd like to change it to "From: [email protected] (Zeus)" I imagine that this can be done in the headers_check, but so far I haven't gotten anything to work and before I waste a ton of time trying to get this to work, I'd like to make sure I am on the right track. My aliasing and genericmaps are set up correctly (As far as I can see and know - the results are correct!). I just want to change that last bit in the From field to reflect the hostname. I would also like to add something in the subject of the outgoing messages for easy filtering - something like Subject: [Zeus.domain] - "Original Subject" Any suggestions are much appreciated. Thanks!

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• Do I need to update some of my Debian Squeeze software?

  - by stan31337

  I have installed Debian 6, and LAMP stack from squeeze repository (default). After upgrading Apache 2.2.16 from unstable repository to 2.2.22, thanks to this post - how to upgrade already installed apache2 on debian (lenny) I'm thinking to upgrade all other software packages that I've previously installd from squeeze repository. Should I upgrade them to the ones from unstable repository? Should I upgrade all of them or just selected ones? Here's the list: * arno-iptables-firewall 1.9.2.k-4 >> 2.0.1.c-1 * bind9 1:9.7.3.dfsg-1~squeeze6 >> 1:9.8.1.dfsg.P1-4.2 * php-apc 3.1.3p1-2 >> 3.1.13-1 * fail2ban 0.8.4-3+squeeze1 >> 0.8.6-3 * exim4 4.72-6+squeeze2 >> 4.80-4 * altermime 0.3.10-4 >> 0.3.10-7 * rrdtool 1.4.3-1 >> 1.4.7-2 * vsftpd 2.3.2-3+squeeze2 >> 3.0.0-4 Also I would like to ask how to upgrade 5.3.3 5.3.16, unstable repository has 5.4.x versions only, I don't think I'm ready to move from 5.3 to 5.4 yet. Actually I'm a newbie in Linux, and after Windows experience I have a paranoidal idea to update software to the latest release. I'd be glad for any suggestions and recommendations! Thank you very much!

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• I need to preserve a tape using symantec backup exec. I'm aving trouble doing so

  - by MrVimes

  Please forgive me if this is the wrong stack exchange site. Please suggest which one I should post this to if it is. There's an automatic tape machine running in a remote location, with software (symantec backup exec 11d) Recently one of the servers being backed up had problems with its raid controller, so one of the drives has become invisible. I need to preserve the last good backup of that drive so I am trying to replace the tape with the most recent backup of that drive on it with one of the scratch tapes (blank tapes) present in the machine. I've tried the following... Associate the blank media with the media set in question (Wednesday) For the existing media (the tape with the data I want to keep) I click 'move to vault' and move it to the offline vault. I associate it with something other than 'Wednesday' (a media set called 'keep data infinitely...') I then do an inventory on that slot. The above steps I'm led to believe are supposed to put the fresh tape in the slot that had the tape I want to keep in it. But it just keeps showing up as containing the tape I want to keep after the inventory. (after refreshing the device tree) I am a complete newbie with this software. Can you tell me what I'm doing wrong, and/or tell me how to acheive my desired goal Edit: Just want to point out that I did try to get help directly from symantec with this, but having jumped through countless hoops to create an account and create a support ticket my progress was halted by requiring something called a 'tecnical contact id' at the final step with no explanation of what it is or how to get one.

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• Assigning cores to VM in vSphere

  - by user114933

  Complete vSphere newbie here... Background: So, I have a 12 core machine with 24 VMs on it. Currently, all the processing power is shared between these VMs equally. The question: Can I configure one VM to be given two CPU's worth processing no matter what's happening on the other machines? My Research: I tried two things in vSphere... I set the reservation and limit on one VM to equal the same as two cores. To test if my objective was being reached, I measured the time it would take to gzip a file when other VMs were running nothing and when other VMs were running CPU intensive operations. I expected the time to gzip the file would be the same because this VM gets priority for some processing. Unfortunately, the time taken to gzip the file when other VMs were running something was significantly more than when other VMs were not running anything. I tried setting the Hyperthreaded Core Sharing mode to Internal hoping that this would mean that my VM would get at least an entire core to itself. This did not work either. Thanks in advance!

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• Connecting SVN from Remote Server

  - by Ashish

  I have hosted my repository in assebbla & it works fine. now I want to write a script that can automate the build process : 1. Take the code from assembla repository 2. Make a dump and copy it onto my web server. what I have researched from net states that use of commands like svn co svn+ssh://[email protected]/home/svn/test I believe I need to open Shell on my server and type these commands but shell has been disabled from my server admin. I tried to run the same from php using exec , admin has disabled that too. (am using shared hosting and want to do a automated deployment using these simple steps. i don't want to bring my local system in this process) now am not sure even if I get the shell access open to my server these commands like svn will work there as I don't have SVN installed on my server (its installed on assembla). kindly let me know if any more explanation is required regarding the same or if am going on the wrong track. Am a newbie so please be descriptive in answering :) Thanx in advance Ace

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• Ubuntu 10.04 on virtualbox gives error: Target filesystem doesn't have /sbin/init \ No init found. Try passing init= bootarg

  - by Philip

  I'm a linux newbie and the only reason I have it installed is so I can stop having Windows incompatibility issues with Ruby on Rails. Having said that, it sure has been nice, and much faster, and I don't think I'll be doing any Winrails stuff anytime soon. So I created a virtualmachine using virtualbox and have had ubuntu on it for the last 3 weeks. Recently ubuntu asked if it could update a few things, I clicked 'ok'. Now it won't boot and I get this error: *mount: mounting /dev on /root/dev failed: No such file or directory mount: mounting /sys on /root/sys failed: No such file or directory ... Target filesystem doesn't have /sbin/init. No init found. Try passing init= bootarg BusyBox v1.13.3... (initramfs) _ * So I cruised the forums and there are a variety of solutions, but they all have to do with booting from the live cd. (which I assume is the ISO image I used to install ubuntu in the first place). But when I boot from that CD, it just hangs on the ubuntu screen, and the little dots keep cycling white to red, but it hung there for an hour so I think it was stuck. Not sure what I can do; can I do anything from the busybox shell (or whatever that is) to fix things? The thing is, it took about 10 hours to get everything the way I needed with all the gems and whatnot. And I didn't really write down what I tweaked, and I'm middle aged, so all that information has leaked out by now and I don't want to do it again. I'd really like to repair my existing install. One question you might have is, is there something wrong with the ISO? I don't think so, because I made a new virtual machine and used that same iso file to install a fresh ubuntu. Any help much appreciated. Phil

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• Apache Server with memcache, varnish and php slow request times

  - by coolestdude1

  My issue is that these servers are taking rather long for request about 2 seconds on average just to serve files. When we had just one server doing everything it was noticeably faster even with the same web app (Drupal 6 and Drupal 7). I want to get this number down to a reasonable level and so I need some help getting to the bottom of why the request times are so slow. This can cause the webapp to hang on post or put and generally leads to a bad user experience on my sites. PS: I am more of a server newbie so this has confounded me for quite some time. The domains: collabornation.net nptrainingworks.com (they run off the same two webservers using vhost configs) The Gear: Two Rackspace 4 Gig servers running CentOS 6.2 Final They have a mounted file system (gluster) that is used to keep files the same on both machines. They are behind a rackspace load balancer running round robin. Mysql is run using php-pdo and php-mysql as such mysql is run on another instance running memcache on that machine with phpMyAdmin located there as well. Apache version number 2.2.15-15.el6.centos.1 (httpd.x86_64) Varnish version number 3.0.2-1.el5 (varnish.x86_64) PHP version number 5.3.14-1.el6.remi (php.x86_64) Configs Linked Below Apache Conf Vhost Conf Varnish Backends Varnish Defaults Varnish Acl PHP INI Again need some help, much appreciated!

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• Sharepoint: authenticating users via forms authentication

  - by sbee

  My problem is the following(sharepoint Newbie) , i want to change the default zone from being a Windows Authenticated Zone to a Forms Authenticated Zone ,thereby forcing the site collection administrator to log in via forms authentication and not windows also the sharepoint users will be accesing the site internally my goal is to effectively replace windows authentication with forms authentication as my company does not have active directory installed. So far i have created an ASP Application that adds the users to the database,the database was created via the .Net Framework Asp tool(Asp reg_sql),however when i change the default zone to the AspNetSqlMembershipProvider(Forms) and attempt to add my site collection administrator via the Central admistrator, i get the following error "No Exact Match found" as shown on the screenshot. My inkling is that somehow the people picker is failing to read the users from the database but reasearch on correcting that thus far has proved fruitless. I have made all the relevant changes on the these sites(Central admin site,My test site & Add Users site) config files.Changes are the following(Membeship Provider,Connection String,People Picker) i left out the role provider for now as it is optional. Help on this would ge highly appreciated...

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• debian lenny email server

  - by Dal

  Hi I am a newbie and set up a debian lenny at home and set up the web and email server in the default installation. I followed the instructions for Exim and ran dpkg-reconfigure exim4-config and set it up for mydomainhere.com. I created a one line message file and attempted to test exim by running the command exim [email protected] < msgfile. I also tried using exim4 Exim but i get same error -bash: Exim: command not found. Obviously I am ignorant on how to run exim and test. I also tried to run a php file that sends a test mail and had no success. That script is tested and works fine if I send it from my hosting isp on a different domain. So I know the php script is good. I set up the debian system behind a netgear firewall and uses 192.168.1.x ip . The web server works great and users can visit my site. But I am lack the knowledge on how to get the email working. Appreciate is someone can guide me.

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• How to configure iptables to use apt-get in a server?

  - by segaco

  I'm starting using iptables (newbie) to protect a linux server (specifically Debian 5.0). Before I configure the iptables settings, I can use apt-get without a problem. But after I configure the iptables, the apt-get stop working. For example I use this script in iptables: #!/bin/sh IPT=/sbin/iptables ## FLUSH $IPT -F $IPT -X $IPT -t nat -F $IPT -t nat -X $IPT -t mangle -F $IPT -t mangle -X $IPT -P INPUT DROP $IPT -P OUTPUT DROP $IPT -P FORWARD DROP $IPT -A INPUT -i lo -j ACCEPT $IPT -A OUTPUT -o lo -j ACCEPT $IPT -A INPUT -p tcp --dport 22 -j ACCEPT $IPT -A OUTPUT -p tcp --sport 22 -j ACCEPT $IPT -A INPUT -p tcp --dport 80 -j ACCEPT $IPT -A OUTPUT -p tcp --sport 80 -j ACCEPT $IPT -A INPUT -p tcp --dport 443 -j ACCEPT $IPT -A OUTPUT -p tcp --sport 443 -j ACCEPT # Allow FTP connections @ port 21 $IPT -A INPUT -p tcp --sport 21 -m state --state ESTABLISHED -j ACCEPT $IPT -A OUTPUT -p tcp --dport 21 -m state --state NEW,ESTABLISHED -j ACCEPT # Allow Active FTP Connections $IPT -A INPUT -p tcp --sport 20 -m state --state ESTABLISHED,RELATED -j ACCEPT $IPT -A OUTPUT -p tcp --dport 20 -m state --state ESTABLISHED -j ACCEPT # Allow Passive FTP Connections $IPT -A INPUT -p tcp --sport 1024: --dport 1024: -m state --state ESTABLISHED -j ACCEPT $IPT -A OUTPUT -p tcp --sport 1024: --dport 1024: -m state --state ESTABLISHED,RELATED -j ACCEPT #DNS $IPT -A OUTPUT -p udp --dport 53 --sport 1024:65535 -j ACCEPT $IPT -A INPUT -p tcp --dport 1:1024 $IPT -A INPUT -p udp --dport 1:1024 $IPT -A INPUT -p tcp --dport 3306 -j DROP $IPT -A INPUT -p tcp --dport 10000 -j DROP $IPT -A INPUT -p udp --dport 10000 -j DROP then when I run apt-get I obtain: core:~# apt-get update 0% [Connecting to ftp.us.debian.org] [Connecting to security.debian.org] [Conne and it stalls. What rules I need to configure to make it works. Thanks

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