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  • How do I access files inside a Wubi virtual ext4 Ubuntu partition from within Windows?

    - by aalaap
    I just installed Ubuntu 10.04 using Wubi on a PC that has Windows XP and Windows 7 installed. I was working in it for a while and everything is just fine. However, when I booted back into Windows 7, I couldn't figure out a way to access the files I had created or downloaded into the Ubuntu partition. They're in a virtual disk called root.disk in my C:\ubuntu\disks. Is there a way I can mount this vhd into Windows or at least browse the contents and extract what I need?

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  • Can vCenter 4 authenticate and authorize against a virtual directory server??

    - by iforeman
    Hi I am looking into Identity managment in our environment. We currently use Active Directory and Sun's Enterprise Directory server (6.3). I was wondering if I used the Virtual Directory Server of the Enterprise Directory server, would we be able to point the vCenter clients to this Directory service for authentication and authorization rather than at the AD source. The reason for this is that we have more users we want to add to the management role of this server but not all are in AD, a fair number are in the Sun LDAP v3. directory. Thanks in advance Ian

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  • Why standard, virtual host Drupal 7 config causes 403 (Forbidden) in Apache2?

    - by drupality
    Virtual host declaration causing the problem (source): <VirtualHost *:80> ServerAdmin admin@d7 DocumentRoot /vagrant/d7 ServerName www.d7.local ServerAlias d7.local RewriteEngine On RewriteOptions inherit <Directory /vagrant/d7> Order allow,deny Allow from all </Directory> <Directory /vagrant> Order allow,deny Allow from all </Directory> </VirtualHost> error logs: [Mon Nov 04 12:23:11.947082 2013] [authz_core:error] [pid 2471] [client 10.0.2.2:58238] AH01630: client denied by server configuration: /vagrant/d7/ I have no idea why this isn't work... With above rule I have forbidden on drupal site and apache welcome page too (index.html) ls -ld /vagrant/d7 command output: drwxrwxrwx 1 vagrant vagrant 8192 Nov 4 10:05 /vagrant/d7

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  • Virtual PC "The page cannot be displayed" error connecting to iis7.5 site on Win7 host.

    - by stan
    I setup virtual pc with the Windows XP IE6 VHD to test a site on Windows 7 host. I created a loopback adapter connection on the host. I have several sites on IIS 7.5, I'm able to connect to all of them except one. And it's the site I need to test... I get "The page cannot be displayed" error. The site loads fine from the host(Windows 7). I've made sure the permissions match that of the other sites that do load. I've recreated the application in IIS manager. Does anyone know what the problem might be?

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  • vsftpd, virtual users and permissions. Avoid using chmod 777?

    - by Jakobud
    I am running vsftpd with Virtual Users (managed through a MySQL db). Each users home/default directory is owned by vsftpd:vsftpd. I need to give a user read/write permissions to some website files, owned by apache:apache so they can make some changes. I did a bind mount for the web directory to a directory in the ftp user's home/default directory. When logging in, the user is not able to write to the web folder, unless I set files to 777. Is it possible to set this up with making the directory and it's files 777? The web directory needs to be apache:apache in order for apache to work with it.

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  • Are there any tools for monitoring individual Apache virtual hosts in real-time?

    - by Dave Forgac
    I'm looking for a way to monitor and record Apache traffic, separated by virtual host. I am currently using Munin to capture this and other data for the entire server however I can't seem to find a way to do this by vhost. This link describes using a module called mod_watch which is apparently no longer in development: http://www.freshnet.org/wordpress/2007/03/08/monitoring-apaches-virtualhost-with-munin/ The file that is listed as being compatible with Apache 2.x is reported to have problems with missing vhosts an reporting data correctly. Does anyone know of a reliable way to determine real-time traffic per vhost? If I can find this it should be easy enough to write a new Munin plugin.

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  • Any good resources on setting up an ubuntu virtual machine for web development?

    - by Relequestual
    I'm currently on my placement year at uni with 4 months left. Before working at my current place, I have not used a nix environment for web development and have used WAMP. Over the past year I have found some very interesting new tech that requires a bit more than my shared hosting even to play with (eg node.js, RoR 3). At work we use a Virtual Machine for development, but that's all been set up and configured to match the live servers, and is managed with a Puppet server. Are there any really good resources for setting up and configuring an Ubuntu VM as a web server? Work currently uses Ubuntu so I would assume this is a good OS to use. I do of course know how to use google, but the noise ratio is just too big, so thought I'd ask here, as I know many of you will have a ton of bookmarks. Cheers.

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  • Running OpenVZ virtual servers within a Xen XCP vritual server? Bad practice?

    - by Damainman
    I have a 1 server with 8GB RAM and 2xQuadcore Processors. It currently has the Xen XCP installed on it, and centos6.2 x64 running on a virtual machine. I have a server control panel software that I want to use and it allows the administration via a web interface for Openvz machines. My questions are: Would this be considered bad practice? Would there be a big performance hit? Should I avoid this all together or am I going about it all wrong? Thank you in advance.

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  • HP p410i array controller - what happens if i add memory?

    - by James
    I have a p410i array controller that only has 256ram. We want to create a raid 5 so we have procured a 512 write back cache module. If we install the write back cache, will this erase the existing raid information. The server currently has 2 disks in raid 1. 6 are spare waiting for an upgrade to create a raid 5. the concern is if we replace/upgrade the memory for the controller, we will wipe the existing production raid 1 array. Thanks in advance.

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  • Two virtual host one with Domain name one with internal ip#?

    - by Abhishek
    Is it possible to have two virtual host configurations for the same server - one with internal ip address and one with domain name? Something like <VirtualHost {{internal-ipaddress}}:80> ....... </VirtualHost> <VirtualHost {{domain-name}}:80> ....... </VirtualHost> Note that the internal IP address and the domain name belong to the same server or same server instance. I am asking this to restrict some URLs for external users, redirect to https all external access and allow everything for internal users(without https)..

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  • migration of physical server to a virtual solution, what i have to do?

    - by bibarse
    Hello I'm new in this forum, so i would like that you forgive me for my blissfully and my low English level. I'm a trainee in company one month ago, and my mission is to migrate 3 physicals servers to a virtualization technology. The company edit softwares for E-learning so there are lots of data like videos, flash and compressed (zip). This is some inventory of the servers: OS: Debian, 2 redhat, apache, php/mysql, sendMail/Dovecot, webmin with virtualmin template to create dynamically the web sites because there is no sysadmin ... The future provider will be responsible of to secure, update and create the virtual machines (outsourcing) and with a RedHat OS's. So i want that you help me to choose a virtualisation technologie (for the i prefer KVM of Redhat RHEV, VMWare is expensive), how evaluate the hardware needs (this for evolution of 4 or 5 years) and to elaborate a good planing to don't forget any think. Thank you for your responses.

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  • Should I be using www. when setting up virtual hosts on apache?

    - by MAZUMA
    Does it matter whether or not I include the www. sub-domain when creating new virtual hosts on apache? So is this? /etc/apache2/sites-available/www.example.com better than this? /etc/apache2/sites-available/example.com I would assume I'd need to a2ensite either www.example.com or example.com. Depending on whichever method used? This might be a a fairly basic question But, I have no one else to ask. And, want to do it right.

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  • Need data on disk drive management by OS: getting base I/O unit size, “sync” option, Direct Memory A

    - by Richard T
    Hello All, I want to ensure I have done all I can to configure a system's disks for serious database use. The three areas I know of (any others?) to be concerned about are: I/O size: the database engine and disk's native size should either match, or the database's native I/O size should be a multiple of the disk's native I/O size. Disks that are capable of Direct Memory Access (eg. IDE) should be configured for it. When a disk says it has written data persistently, it must be so! No keeping it in cache and lying about it. I have been looking for information on how to ensure these are so for CENTOS and Ubuntu, but can't seem to find anything at all! I want to be able to check these things and change them if needed. Any and all input appreciated.

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  • Tomcat 7: Include virtual host definitions from a directory?

    - by grog_7
    I'm setting up a new Tomcat 7.0.33 server, and I'm looking for a simple way to include a directory full of virtual host definition XML files for configuration. I've found that it's possible to do XML includes from server.xml, but this requires a line in server.xml for each file, and is no less work than just having the entire config right in server.xml. I'm looking for something similar to Apache's Include directive. The end result I'm looking for is to have a directory I can drop an XML file into that Tomcat will pick up on the next restart, without having to modify server.xml. Is there a way to do this? Thanks!

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  • How to know if a server is physical or virtual? [duplicate]

    - by tachomi
    This question already has an answer here: is there anyway to know if your supposedly fully dedicated server is really a virtually resource-shared machine? [duplicate] 5 answers How can I know if my provider is giving me a dedicated physical server or if I'm getting virtual servers? The provider is from an other country so I don't have the chance to go and see the servers by myself, all of them have linux and they're managed by SSH. All the hire has been done by internet or phone. Are there any commands, dirs to analyze or a way to get this info? They of course tell me that the servers are physical, but when they make some support or hardware/software upgrade or that kind of stuff doesn't take a long. For example, when I ask for a new one with specific requirements at the end they give me more infrastructure than the one I asked for. Of course no one gives extra things without an extra price. Hope I have hinted

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  • How to serialize a protected property in wcf

    - by Denis Rosca
    Hello, i need some help with wcf serializing. I have two classes Person and Address. The Address class looks like this: public class Adresa : IExtensibleDataObject { private Guid _id; [DataMember] protected virtual Guid Id { get { return _id; } set { _id = value; } } private ExtensionDataObject _extensionData; [DataMember] public virtual ExtensionDataObject ExtensionData { get { return _extensionData; } set { _extensionData = value; } } private string _street; [DataMember] public virtual string Street { get { return this._cUTAM; } set { this._cUTAM = value; } } private string _number; [DataMember] public virtual string Number { get { return this._number; } set { this._number = value; } } private string _postalCode; [DataMember] public virtual string PostalCode { get { return this._postalCode; } set { this._postalCode = value; } } // and some other stuff related to the address } The Person class looks like this: public class PersoanaFizica :IExtensibleDataObject { private Guid _id; [DataMember] protected virtual Guid Id { get { return _id; } set { _id = value; } } private ExtensionDataObject _extensionData; [DataMember] public virtual ExtensionDataObject ExtensionData { get { return _extensionData; } set { _extensionData = value; } } private string _firstName; [DataMember] public virtual string FirstName { get { return this._firstName; } set { this._firstName = value; } } private string _lastName; [DataMember] public virtual string LastName { get { return this._lastName; } set { this._lastName = value; } } } The problem is that when the wcf client the data the Id properties are set to a bunch of zeros ( something like 000000-0000-000000-0000000). Any ideas on why this is happening? Thanks, Denis.

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  • Forward declaration of derived inner class

    - by Loom
    I ran into problem implementing some variations of factory method. // from IFoo.h struct IFoo { struct IBar { virtual ~IBar() = 0; virtual void someMethod() = 0; }; virtual IBar *createBar() = 0; }; // from Foo.h struct Foo : IFoo { // implementation of Foo, Bar in Foo.cpp struct Bar : IBar { virtual ~Bar(); virtual void someMethod(); }; virtual Bar *createBar(); // implemented in Foo.cpp }; I'd like to place declaration of Foo::Bar in Foo.cpp. For now I cannot succeed: struct Foo : IFoo { //struct Bar; //1. error: invalid covariant return type // for ‘virtual Foo::Bar* //struct Bar : IBar; //2. error: expected ‘{’ before ‘;’ token virtual Bar *createBar(); // virtual IBar *createBar(); // Is not acceptable by-design }; Is there a trick to have just forward declaration of Boo in Foo.hpp and to have full declaration in Foo.cpp?

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  • How to determine one to many column name from entity type

    - by snicker
    I need a way to determine the name of the column used by NHibernate to join one-to-many collections from the collected entity's type. I need to be able to determine this at runtime. Here is an example: I have some entities: namespace Entities { public class Stable { public virtual int Id {get; set;} public virtual string StableName {get; set;} public virtual IList<Pony> Ponies { get; set; } } public class Dude { public virtual int Id { get; set; } public virtual string DudesName { get; set; } public virtual IList<Pony> PoniesThatBelongToDude { get; set; } } public class Pony { public virtual int Id {get; set;} public virtual string Name {get; set;} public virtual string Color { get; set; } } } I am using NHibernate to generate the database schema, which comes out looking like this: create table "Stable" (Id integer, StableName TEXT, primary key (Id)) create table "Dude" (Id integer, DudesName TEXT, primary key (Id)) create table "Pony" (Id integer, Name TEXT, Color TEXT, Stable_id INTEGER, Dude_id INTEGER, primary key (Id)) Given that I have a Pony entity in my code, I need to be able to find out: A. Does Pony even belong to a collection in the mapping? B. If it does, what are the column names in the database table that pertain to collections In the above instance, I would like to see that Pony has two collection columns, Stable_id and Dude_id.

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  • C Programming: malloc() inside another function

    - by vikramtheone
    Hi Guys, I need help with malloc() inside another function. I'm passing a pointer and size to the function from my main() and I would like to allocate memory for that pointer dynamically using malloc() from inside that called function, but what I see is that.... the memory which is getting allocated is for the pointer declared withing my called function and not for the pointer which is inside the main(). How should I pass a pointer to a function and allocate memory for the passed pointer from inside the called function? Can anyone throw light on this? Help!!! Vikram I have written the following code and I get the output as shown below SOURCE: main() { unsigned char *input_image; unsigned int bmp_image_size = 262144; if(alloc_pixels(input_image, bmp_image_size)==NULL) printf("\nPoint2: Memory allocated: %d bytes",_msize(input_image)); else printf("\nPoint3: Memory not allocated"); } signed char alloc_pixels(unsigned char *ptr, unsigned int size) { signed char status = NO_ERROR; ptr = NULL; ptr = (unsigned char*)malloc(size); if(ptr== NULL) { status = ERROR; free(ptr); printf("\nERROR: Memory allocation did not complete successfully!"); } printf("\nPoint1: Memory allocated: %d bytes",_msize(ptr)); return status; } PROGRAM OUTPUT: Point1: Memory allocated ptr: 262144 bytes Point2: Memory allocated input_image: 0 bytes

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  • Prroblem with ObjectDelete() in Entity Framework 4

    - by Tom
    I got two entities: public class User : Entity { public virtual string Username { get; set; } public virtual string Email { get; set; } public virtual string PasswordHash { get; set; } public virtual List<Photo> Photos { get; set; } } and public class Photo : Entity { public virtual string FileName { get; set; } public virtual string Thumbnail { get; set; } public virtual string Description { get; set; } public virtual int UserId { get; set; } public virtual User User { get; set; } } When I try to delete the photo it works fine for the DB (record gets romoved from the table) but it doesnt for the Photos collection in the User entity (I can still see that photo in user.Photos). This is my code. What I'm doing wrong here? Changing entity properties works fine. When I change photo FileName for example it gets updated in DB and in user.Photos. var photo = SelectById(id); Context.DeleteObject(photo); Context.SaveChanges(); var user = GetUser(userName); // the photo I have just deleted is still in user.Photos also tried this but getting same results: var photo = user.Photos.First(); Context.DeleteObject(photo); Context.SaveChanges();

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  • Fluent NHibernate AutoMap

    - by Markus
    Hi. I have a qouestion regarding the AutoMap xml generation. I have two classes: public class User { virtual public Guid Id { get; private set; } virtual public String Name { get; set; } virtual public String Email { get; set; } virtual public String Password { get; set; } virtual public IList<OpenID> OpenIDs { get; set; } } public class OpenID { virtual public Guid Id { get; private set; } virtual public String Provider { get; set; } virtual public String Ticket { get; set; } virtual public User User { get; set; } } The generated sequences of xml files are: For User class: <bag name="OpenIDs"> <key> <column name="User_Id" /> </key> <one-to-many class="BL_DAL.Entities.OpenID, BL_DAL, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null" /> </bag> For OpenID class: <many-to-one class="BL_DAL.Entities.User, BL_DAL, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null" name="User"> <column name="User_id" /> </many-to-one> I don't see the inverse=true attribute for the User mapping. Is it a normal behavior, or I made a mistake somewhere?

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  • PHP OCI8 and Oracle 11g DRCP Connection Pooling in Pictures

    - by christopher.jones
    Here is a screen shot from a PHP OCI8 connection pooling demo that I like to run. It graphically shows how little database host memory is needed when using DRCP connection pooling with Oracle Database 11g. Migrating to DRCP can be as simple as starting the pool and changing the connection string in your PHP application. The script that generated the data for this graph was a simple "Parts" query application being run under various simulated user loads. I was running the database on a small Oracle Linux server with just 2G of memory. I used PHP OCI8 1.4. Apache is in pre-fork mode, as needed for PHP. Each graph has time on the horizontal access in arbitrary 'tick' time units. Click the image to see it full sized. Pooled connections Beginning with the top left graph, At tick time 65 I used Apache's 'ab' tool to start 100 concurrent 'users' running the application. These users connected to the database using DRCP: $c = oci_pconnect('phpdemo', 'welcome', 'myhost/orcl:pooled'); A second hundred DRCP users were added to the system at tick 80 and a final hundred users added at tick 100. At about tick 110 I stopped the test and restarted Apache. This closed all the connections. The bottom left graph shows the number of statements being executed by the database per second, with some spikes for background database activity and some variability for this small test. Each extra batch of users adds another 'step' of load to the system. Looking at the top right Server Process graph shows the database server processes doing the query work for each web user. As user load is added, the DRCP server pool increases (in green). The pool is initially at its default size 4 and quickly ramps up to about (I'm guessing) 35. At tick time 100 the pool increases to my configured maximum of 40 processes. Those 40 processes are doing the query work for all 300 web users. When I stopped the test at tick 110, the pooled processes remained open waiting for more users to connect. If I had left the test quiet for the DRCP 'inactivity_timeout' period (300 seconds by default), the pool would have shrunk back to 4 processes. Looking at the bottom right, you can see the amount of memory being consumed by the database. During the initial quiet period about 500M of memory was in use. The absolute number is just an indication of my particular DB configuration. As the number of pooled processes increases, each process needs more memory. You can see the shape of the memory graph echoes the Server Process graph above it. Each of the 300 web users will also need a few kilobytes but this is almost too small to see on the graph. Non-pooled connections Compare the DRCP case with using 'dedicated server' processes. At tick 140 I started 100 web users who did not use pooled connections: $c = oci_pconnect('phpdemo', 'welcome', 'myhost/orcl'); This connection string change is the only difference between the two tests. At ticks 155 and 165 I started two more batches of 100 simulated users each. At about tick 195 I stopped the user load but left Apache running. Apache then gradually returned to its quiescent state, killing idle httpd processes and producing the downward slope at the right of the graphs as the persistent database connection in each Apache process was closed. The Executions per Second graph on the bottom left shows the same step increases as for the earlier DRCP case. The database is handling this load. But look at the number of Server processes on the top right graph. There is now a one-to-one correspondence between Apache/PHP processes and DB server processes. Each PHP processes has one DB server processes dedicated to it. Hence the term 'dedicated server'. The memory required on the database is proportional to all those database server processes started. Almost all my system's memory was consumed. I doubt it would have coped with any more user load. Summary Oracle Database 11g DRCP connection pooling significantly reduces database host memory requirements allow more system memory to be allocated for the SGA and allowing the system to scale to handled thousands of concurrent PHP users. Even for small systems, using DRCP allows more web users to be active. More information about PHP and DRCP can be found in the PHP Scalability and High Availability chapter of The Underground PHP and Oracle Manual.

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  • Presentations on OVCA & OVN

    - by uwes
    The following three presentations regarding Oracle Virtual Compute Appliance and Oracle SDN from Oracle Open World sessions are now available for download from eSTEP portal. Oracle Virtual Compute Appliance: From Power On to Production in About an Hour Charlie Boyle and Premal Savla give an overview of the Oracle Virtual Compute Appliance. This presentation is a mix of the business and technical slides. Rapid Application Deployment with Oracle Virtual Compute Appliance Kurt Hackel and Saar Maoz, both in Product Development, explain how to use Oracle VM templates to deploy applications faster and walk through a demo with Oracle VM templates for Oracle Database.  Oracle SDN: Software-Defined Networking in a Hybrid, Open Data Center Krishna Srinivasan and Ronen Kofman explain Oracle SDN and provide use cases for multi-tenant private cloud, IaaS, serving Tier 1 application and virtual network services. The presentation can be downloaded from eSTEP portal. URL: http://launch.oracle.com/ PIN: eSTEP_2011 The material can be found under tab eSTEP Download Located under: Recent Updates and Engineered Sysytems/Optimized Solutions

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  • Error java.lang.OutOfMemoryError: getNewTla using Oracle EPM products

    - by Marc Schumacher
    Running into a Java out of memory error, it is very common behaviour in the field that the Java heap size will be increased. While this might help to solve a heap space out of memory error, it might not help to fix an out of memory error for the Thread Local Area (TLA). Increasing the available heap space from 1 GB to 16 GB might not even help in this situation. The Thread Local Area (TLA) is part of the Java heap, but as the name already indicates, this memory area is local to a specific thread so there is no need to synchronize with other threads using this memory area. For optimization purposes the TLA size is configurable using the Java command line option “-XXtlasize”. Depending on the JRockit version and the available Java heap, the default values vary. Using Oracle EPM System (mainly 11.1.2.x) the following setting was tested successfully: -XXtlasize:min=8k,preferred=128k More information about the “-XXtlasize” parameter can be found in the JRockit documentation: http://docs.oracle.com/cd/E13150_01/jrockit_jvm/jrockit/jrdocs/refman/optionXX.html

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  • Fast Track Data Warehouse 3.0 Reference Guide

    - by jchang
    Microsoft just release Fast Track Data Warehouse 3.0 Reference Guide version. The new changes are increased memory recommendation and the disks per RAID group change from 2-disk RAID 1 to 4-Disk RAID 10. Memory The earlier FTDW reference architecture cited 4GB memory per core. There was no rational behind this, but it was felt some rule was better than no rule. The new FTDW RG correctly cites the rational that more memory helps keep hash join intermediate results and sort operations in memory. 4-Disk...(read more)

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