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• How to extend a Linux PV partition online after virtual disk growth

  - by Yves Martin

  VMware allows to extend the size of a virtual disk online - when the VM is running. The next expected steps for Linux system are: extend the partition: delete and create a larger one with fdisk extend the PV size with pvresize use free extents for lvresize operations and then resize2fs for file system But I am stuck on the first step: fdisk and sfdisk still display the old size for the disk. My disk is a SCSI virtual disk connected thanks to the virtual LSI Logic controller. How to refresh the virtual disk size and partition table information available in Linux kernel without reboot ? As far as I know all that steps are possible for a running Windows, without reboot and even without any user actions thanks to VMWare tools. On Linux, I expects to do all steps online too and I already know steps 2, 3 and 4 work online. But the first one - change partition size declared in the partition table (still) seems to require a reboot. Update: My system is a Debian Lenny with kernel 2.6.26 and the disk I have extended is the main disk with a large PV containing the "root" LV for "/".

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• How to resolve virtual disk degraded in Windows Server 2012

  - by harrydev

  I am using the new Storage Spaces feature in Windows Server 2012. I have the following disks: FriendlyName CanPool OperationalStatus HealthStatus Usage Size ------------ ------- ----------------- ------------ ----- ---- PhysicalDisk2 False OK Healthy Auto-Select 2.73 TB PhysicalDisk3 False OK Healthy Auto-Select 2.73 TB PhysicalDisk4 False OK Healthy Auto-Select 2.73 TB PhysicalDisk5 False OK Healthy Auto-Select 2.73 TB There is also a separate OS disk. The above disks are part of a single storage pool: FriendlyName OperationalStatus HealthStatus IsPrimordial IsReadOnly ------------ ----------------- ------------ ------------ ---------- Pool OK Healthy False False Within this storage pool some virtual disks are defined, see below: FriendlyName ResiliencySettingNa OperationalStatus HealthStatus IsManualAttach Size me ------------ ------------------- ----------------- ------------ -------------- ---- Docs Mirror OK Healthy False 500 GB Data Mirror Degraded Warning False 500 GB Work Mirror Degraded Warning False 2 TB Now the virtual disks are all running normal 2-way mirror, but two of the virtual disks are degraded. This is probably because one of the physical disks was offline for a short period of time. However, now the virtual disk cannot be repaired, even though, all physical disks are healthy. There is plenty of available space in the storage pool. This I cannot understand so I was hoping for some help, on how to resolve this? Below I have listed the full output from the Get-VirtualDisk CmdLet for the "Work" disk: ObjectId : {XXXXXXXX} PassThroughClass : PassThroughIds : PassThroughNamespace : PassThroughServer : UniqueId : XXXXXXXX Access : Read/Write AllocatedSize : 412316860416 DetachedReason : None FootprintOnPool : 824633720832 FriendlyName : Work HealthStatus : Warning Interleave : 262144 IsDeduplicationEnabled : False IsEnclosureAware : False IsManualAttach : False IsSnapshot : False LogicalSectorSize : 512 Name : NameFormat : NumberOfAvailableCopies : 0 NumberOfColumns : 2 NumberOfDataCopies : 2 OperationalStatus : Degraded OtherOperationalStatusDescription : OtherUsageDescription : Disk for data being worked on (not backed up) ParityLayout : PhysicalDiskRedundancy : 1 PhysicalSectorSize : 4096 ProvisioningType : Thin RequestNoSinglePointOfFailure : True ResiliencySettingName : Mirror Size : 2199023255552 UniqueIdFormat : Vendor Specific UniqueIdFormatDescription : Usage : Other PSComputerName :

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• Automating first time login process in Windows Server 2008 R2 SP1 virtual machine

  - by George Durzi

  I have a set of Windows 2008 Server R2 SP1 Enterprise Edition virtual machines running in Hyper-V. The host server has 64GB of RAM and two SSD drives (one drive for the host OS, and the second one for the VMs). The virtual machines are as follows: Domain Controller: 4GB RAM Exchange Server: 4GB RAM Terminal Services: 50GB RAM We use this setup for a travelling training class where users remote desktop to one of the VMs - let's call it the Terminal Services or "TS" VM - where tools such as Visual Studio are installed. The students go through some labs on the TS VMs in Visual Studio. Overall, this setup works great. However, when users are collectively logging in for the first time, the VM really struggles to keep up while all the user profiles are created. It can take some users up to 10 minutes to login. The number varies from 30 to 40 students. A workaround to this would be to manually remote desktop to the TS virtual machine using all the accounts to ensure that the local profile is created in advance. I'm looking for a way to automate the first time login process on the TS virtual machine. I am envisioning iterating through the accounts in a certain Active Directory OU, and then somehow initiating a remote desktop session to the TS VM to log them in for the first time. Are there ways to do this? Thanks

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• Virtual Machine Network Services causes networking problems in Vista Enterprise 64 bit install

  - by Bill

  I have a Quad-core/8GB Vista Enterprise 64-bit (SP2) installation on which I installed Virtual PC 2007. I have a problem that is opposite of all that I found searching around the Internet--everybody has problems making network connections from their guest VM. When Virtual Machine Network Services is enabled in the protocol stack for my network card across a reboot, it causes access problems to the network. The amount of time to login in using a domain credentialed account is upwards of 3 minutes, then after reaching the desktop the network and sharing center shows that my connection to the domain is unauthenticated. Disabling and re-enabling the Virtual Machine Network Services (uncheck in network properties/apply/recheck/apply) fixes the problem. And as long as I have the VMNS disabled when I shutdown the restart runs smoothly. I just have to remember to enable after login and disable before shutdown. I have un-installed and re-installed Virtual PC 2007 multiple times with restarts between. The install consists of the SP1 + a KB patch for guest resolution fix. Any help would be greatly appreciated. Some additional information... At one point during my hairpulling and teethgnashing with this, I tried to ping my primary DC and observed some weird responses: (Our DC is 10.10.10.25, my dynamic IP was 10.10.10.203) Reply from 10.10.10.203, Destination host unreachable. Request timed out. Reply from 10.10.10.25: ... This is not consistently repeatable, but thought it might strike a chord with someone.

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• High availability virtual machines

  - by Jeremy

  I've been reading a lot about high availability virtualization, either via Hyper-V or VMWare. In that context, essentially high availabliity means that the VM is hosted by a closter of physical servers (nodes), so if one of the physical servers goes down, the VM can still be served by other physical servers. So far so good, the physical cluster and the VM itself are highly available. However if the service being provided, let's say SQL server, MSDTC, or any other service, are actually being provided by the VM image and the virtualized operating system. So I imagine that there is still a point of failure at the virtual layer that isn't accounted for. Something could happen within the virtual machine itself that the physican cluster can not account for, correct? In that instance the physican failover cluster (Hyper-V) or VMWare host, can not fail over, because the issue is not with one of the servers in the physical cluster - failing over a physical node would not do any good. Does this necessitate building a virtual failover cluster on top of the physical one, or is this not necessary? Alternatively, I suppose you could skip the phsyical clustering, and just cluster at the virtual layer (Child based failover clustering), because that should still survive a physical failure. See image below showing parent based (left), child based (right) and a combination (center). Is parent based as far as you need to go, or is child based more appropriate?

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• KVM virtual machine unable to access internet

  - by peachykeen

  I have KVM set up to run a virtual machine (Windows Home Server 2011 acting as a build agent) on a dedicated server (CentOS 6.3). Recently, I ran updates on the host, and the virtual machine is now unable to connect to the internet. The virtual network is running through NAT, the host has an interface (eth0:0) set up with a static IP (virt-manager shows the network and its IP correctly), and all connections to that IP should be sent to the guest. The host and guest can ping one another, but the guest cannot ping anything above the host, nor can I ping the guest from anywhere else (I can ping the host). Results from the guest to another server under my control and from an external system to the guest both return "Destination port unreachable". Running tcpdump on the host and destination shows the host replying to the ping, but the destination never sees it (it doesn't even look like the host is bothering to send it on at all, which leads me to suspect iptables). The ping output matches that, listing replies from 192.168.100.1. The guest can resolve DNS, however, which I find rather odd. The guest's network settings (connection TCP/IPv4 properties) are set up with a static local IP (192.168.100.128), mask of 255.255.255.0, and gateway and DNS at 192.168.100.1. When originally setting up the vm/net, I had set up some iptables rules to enable bridging, but after my hosting company complained about the bridge, I set up a new virtual net using NAT and believe I removed all the rules. The VM's network was working perfectly fine for the last few months, until yesterday. I haven't heard anything from the hosting company, didn't change anything on the guest, so as far as I know, nothing else has changed (unfortunately the list of packages updated has since fallen off scrollback and I didn't note it down).

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• How to access Virtual machine using powershell script

  - by Sheetal

  I want to access the virtual machine using powershell script. For that I used below script, Enter-PSSession -computername sheetal-VDD -credential compose04.com\abc.xyz1 where, sheetal-VDD is hostname of virtual machine compose04.com is the domain name of virtual machine and abc.xyz1 is the username of virtual machine After entering above command , it asks for password. When the password is entered I get below error, Enter-PSSession : Connecting to remote server failed with the following error message : WinRM cannot process the reques t. The following error occured while using Kerberos authentication: There are currently no logon servers available to s ervice the logon request. Possible causes are: -The user name or password specified are invalid. -Kerberos is used when no authentication method and no user name are specified. -Kerberos accepts domain user names, but not local user names. -The Service Principal Name (SPN) for the remote computer name and port does not exist. -The client and remote computers are in different domains and there is no trust between the two domains. After checking for the above issues, try the following: -Check the Event Viewer for events related to authentication. -Change the authentication method; add the destination computer to the WinRM TrustedHosts configuration setting or us e HTTPS transport. Note that computers in the TrustedHosts list might not be authenticated. -For more information about WinRM configuration, run the following command: winrm help config. For more information, see the about_Remote_Troubleshooting Help topic. At line:1 char:16 + Enter-PSSession <<<< -computername sheetal-VDD -credential compose04.com\Sheetal.Varpe + CategoryInfo : InvalidArgument: (sheetal-VDD:String) [Enter-PSSession], PSRemotingTransportException + FullyQualifiedErrorId : CreateRemoteRunspaceFailed Can someone help me out in this?

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• How do I tunnel an HTTPS proxy through a virtual machine (VMWare)

  - by Kyle

  I have a personal setup at home using VMWare Workstation. I also have a set of Virtual Private Machines that run Squid, and therefore provide me HTTPS proxy tunnels. Using Proxifier, I can tunnel all traffic for given applications through these tunnels. However, I also have a few virtual machines for dev/staging/experimentation/etc. I generally just use NAT to provide Internet access to the machines, and if I need to use these proxies, I can just setup Proxifier (or a Linux equivalent) to pipe the traffic through them. No problem. But... I got to thinking: Wouldn't it be great if I could assign these proxy tunnels to a virtual machine, so that when I start up the VM, it has instant-on access through the tunnel and not my local connection? (EDIT: Of course, it would USE my local connection, but it would tunnel traffic through the proxy.) To be more clear: I want a solution that binds the proxy to a VM, so that when I start the VM, I don't have to use a proxy client to connect to the tunnel - I am already piping all traffic from that VM through that proxy. I did a bit of searching, and the closest thing I could find was this: How to route public static IP to a virtual machine on a vmware ESXi host? Which wasn't all that applicable. The proxies are protected by user/pass but do not filter by IP. Again, they are HTTPS proxies setup through Squid. Any ideas on how to make this happen? Thanks a ton.

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• Good Laptop .NET Developer VM Setup

  - by Steve Brouillard

  I was torn between putting this question on this site or SuperUsers. I've tried to do a good bit of searching on this, and while I find plenty of info on why to go with a VM or not, there isn't much practical advise on HOW to best set things up. Here's what I currently HAVE: HP EliteBook 1540, quad-core, 8GB memory, 500GB 7200 RPM HD, eSATA port. Descent machine. Should work just fine. Windows 7 64-bit Host OS. This also acts as my day-to-day basic stuff (email, Word Docs, etc...) OS. VMWare Desktop Windows 7 64-bit Guest OS with all my .NET dev tools, frameworks, etc loaded on it. It's configured to use 2 cores and up to 6GB of memory. I figure that the dev env will need more than email, word, etc... So, this seemed like a good option to me, but I find with the VM running, things tend to slow down all around on both the host and guest OS. Memory and CPU utilization don't seem to be an issue, but I/O does. I tried running the VM on an external eSATA drive, figuring that the extra channel might pick up the slack. Things only got worse (could be my eSATA enclosure). So, for all of that I have basically two questions in one. Has anyone used this sort of setup and are there any gotchas either around the VMWare configuration or anything else I may have missed here that you can point me to? Is there another option that might work better? For example, I've considered trying a lighter weight Host OS and run both of my environments as VMs? I tried this with Server 2008 Hyper-V, but I lose too much laptop functionality going this route, so I never completed setup. I'm not averse to Linux as a host OS, though I'm no Linux expert. If I'm missing any critical info, feel free to ask. Thanks in advance for your help. Steve

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• Itautec Accelerates Profitable High Tech Customer Service

  - by charles.knapp

  Itautec is a Brazilian-based global high technology products and services firm with strong performance in the global market of banking and commercial automation, with more than 2,300 global clients. It recently deployed Siebel CRM for sales, customer support, and field service. In the first year of use, Siebel CRM enabled a 30% growth in services revenue. Siebel CRM also reduced support costs. "Oracle's Siebel CRM has minimized costs and made our customer service more agile," said Adriano Rodrigues da Silva, IT Manager. "Before deployment, 95% of our customer service contacts were made by phone. Siebel CRM made it possible to expand' choices, so that now 55% of our customers contact our helpdesk through the newer communications channels." Read more here about Itautec's success, and learn more here about how Siebel CRM can help your firm to grow customer service revenues, improve service levels, and reduce costs.

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• OPN PartnerCasts com Stein Surlin

  - by Claudia Costa

    Desde de Abril 2009  Stein Surlin - Senior VP Alliances& Channels EMEA, tem realizado diversas  entrevistas com executivos da Oracle EMEA, em que se têm discutido temas acerca da organização Oracle EMEA, de como está alinhada em trabalhar em conjunto com os seus  parceiros e em apoiá-los na obtenção de novas oportunidades de negócio . Neste link poderá assistir aos OPN PartnerCasts. Aqui poderá encontrar as notícias mais actualizadas sobre a estratégia de parceiros da Oracle, oportunidades de negócio, estratégias de produtos e muito mais! Fique atento ao Portal OPN Partner Casts, mais podcasts estão a caminho!        

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• Working with Lightweight User Interface Toolkit (LWUIT) 1.4

  - by janice.heiss(at)oracle.com

  Vikram Goyal's informative and practical article, "Working with Lightweight User Interface Toolkit (LWUIT) 1.4," shows developers how to best take advantage of LWUIT 1.4. LWUIT is a user interface library designed to bring uniformity and cross mobile interface functionality to applications developed using Java Platform, Micro Edition (Java ME). Version 1.4 offers support for XHTML, multi-line text fields, and customization to the virtual keyboard.Goyal notes in the article that, "Perhaps the most important feature of this release is the ability for LWUIT to support XHTML. Specifically, it now supports XHTML MP (Mobile Platform) 1.0, a version of XHTML designed for mobile phones. To be even more specific, it now supports CSS styling for the HTMLComponent within the LWUIT library through Wireless Application Protocol CSS (WCSS)." Read the entire article here. 

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• Improve Engineering & Construction Project Productivity

  - by [email protected]

  Driving successful project delivery and providing greater value and return for all stakeholders are key goals for firms in the engineering and construction industry. However, increasingly complex construction projects, compressed schedules, ineffective collaboration among project stakeholders, and limited interoperability, can get in the way of these goals and lead to reduced productivity. What E&C firms need are solutions that will improve global team collaboration, optimize processes and better communicate electronic project data. Check out the AutoVue for Engineering and Construction Solution Brief and learn how AutoVue enterprise visualization solutions can: - improve global project collaboration and communication - improve data interoperability - support virtual design and construction projects - improve change management and maintain accountability

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• Modern.IE VM license

  - by Thomas W.

  Microsoft provides some VMs for testing purposes (advertised on StackOverflow) and I'm trying to understand the license terms. The one I don't really understand is 1.b. You may use the software for testing purposes only. You may not use the software for commercial purposes. My thoughts: a) Testing a website in several browsers on several different virtual machines seems a quite professional approach. I hardly believe many private developers would do that. Of course they should, but which private developer has the time to do so? b) If that's really only available to private developers, what is the offer to companies doing the same thing? I am missing the advertisement for a paid service. My question as a non-native English speaker: Is testing by a company considered as a commercial purpose? Can I use the VMs within a company for testing or not?

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• nginx reverse proxy cannot access apache virtual hosts

  - by Sc0rian

  I am setting up nginx as a reverse proxy. The server runs on directadmin and lamp stack. I have nginx running on port 81. I can access all my sites (including virtual ips) on the port 81. However when I forward the traffic from port 80 to 81, the virtual ips have a message saying "Apache is running normally". Server IPs are fine, and I can still access virtual IP's on 81. [root@~]# netstat -an | grep LISTEN | egrep ":80|:81" tcp 0 0 <virtual ip>:81 0.0.0.0:* LISTEN tcp 0 0 <virtual ip>:81 0.0.0.0:* LISTEN tcp 0 0 <serverip>:81 0.0.0.0:* LISTEN tcp 0 0 :::80 :::* LISTEN apache 24090 0.6 1.3 29252 13612 ? S 18:34 0:00 /usr/sbin/httpd -k start -DSSL apache 24092 0.9 2.1 39584 22056 ? S 18:34 0:00 /usr/sbin/httpd -k start -DSSL apache 24096 0.2 1.9 35892 20256 ? S 18:34 0:00 /usr/sbin/httpd -k start -DSSL apache 24120 0.3 1.7 35752 17840 ? S 18:34 0:00 /usr/sbin/httpd -k start -DSSL apache 24495 0.0 1.4 30892 14756 ? S 18:35 0:00 /usr/sbin/httpd -k start -DSSL apache 24496 1.0 2.1 39892 22164 ? S 18:35 0:00 /usr/sbin/httpd -k start -DSSL apache 24516 1.5 3.6 55496 38040 ? S 18:35 0:00 /usr/sbin/httpd -k start -DSSL apache 24519 0.1 1.2 28996 13224 ? S 18:35 0:00 /usr/sbin/httpd -k start -DSSL apache 24521 2.7 4.0 58244 41984 ? S 18:35 0:00 /usr/sbin/httpd -k start -DSSL apache 24522 0.0 1.2 29124 12672 ? S 18:35 0:00 /usr/sbin/httpd -k start -DSSL apache 24524 0.0 1.1 28740 12364 ? S 18:35 0:00 /usr/sbin/httpd -k start -DSSL apache 24535 1.1 1.7 36008 17876 ? S 18:35 0:00 /usr/sbin/httpd -k start -DSSL apache 24536 0.0 1.1 28592 12084 ? S 18:35 0:00 /usr/sbin/httpd -k start -DSSL apache 24537 0.0 1.1 28592 12112 ? S 18:35 0:00 /usr/sbin/httpd -k start -DSSL apache 24539 0.0 0.0 0 0 ? Z 18:35 0:00 [httpd] <defunct> apache 24540 0.0 1.1 28592 11540 ? S 18:35 0:00 /usr/sbin/httpd -k start -DSSL apache 24541 0.0 1.1 28592 11548 ? S 18:35 0:00 /usr/sbin/httpd -k start -DSSL root 24548 0.0 0.0 4132 752 pts/0 R+ 18:35 0:00 egrep apache|nginx root 28238 0.0 0.0 19576 284 ? Ss May29 0:00 nginx: master process /usr/local/nginx/sbin/nginx -c /usr/local/nginx/conf/nginx.conf apache 28239 0.0 0.0 19888 804 ? S May29 0:00 nginx: worker process apache 28240 0.0 0.0 19888 548 ? S May29 0:00 nginx: worker process apache 28241 0.0 0.0 19736 484 ? S May29 0:00 nginx: cache manager process here is my nginx conf: cat /usr/local/nginx/conf/nginx.conf user apache apache; worker_processes 2; # Set it according to what your CPU have. 4 Cores = 4 worker_rlimit_nofile 8192; pid /var/run/nginx.pid; events { worker_connections 1024; } http { include mime.types; default_type application/octet-stream; log_format main '$remote_addr - $remote_user [$time_local] ' '"$request" $status $body_bytes_sent "$http_referer" ' '"$http_user_agent" "$http_x_forwarded_for"'; server_tokens off; access_log /var/log/nginx_access.log main; error_log /var/log/nginx_error.log debug; server_names_hash_bucket_size 64; sendfile on; tcp_nopush on; tcp_nodelay off; keepalive_timeout 30; gzip on; gzip_comp_level 9; gzip_proxied any; proxy_buffering on; proxy_cache_path /usr/local/nginx/proxy_temp levels=1:2 keys_zone=one:15m inactive=7d max_size=1000m; proxy_buffer_size 16k; proxy_buffers 100 8k; proxy_connect_timeout 60; proxy_send_timeout 60; proxy_read_timeout 60; server { listen <server ip>:81 default rcvbuf=8192 sndbuf=16384 backlog=32000; # Real IP here server_name <server host name> _; # "_" is for handle all hosts that are not described by server_name charset off; access_log /var/log/nginx_host_general.access.log main; location / { proxy_set_header Host $host; proxy_set_header X-Real-IP $remote_addr; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; proxy_pass http://<server ip>; # Real IP here client_max_body_size 16m; client_body_buffer_size 128k; proxy_buffering on; proxy_connect_timeout 90; proxy_send_timeout 90; proxy_read_timeout 120; proxy_buffer_size 16k; proxy_buffers 32 32k; proxy_busy_buffers_size 64k; proxy_temp_file_write_size 64k; } location /nginx_status { stub_status on; access_log off; allow 127.0.0.1; deny all; } } include /usr/local/nginx/vhosts/*.conf; } here is my vhost conf: # cat /usr/local/nginx/vhosts/1.conf server { listen <virt ip>:81 default rcvbuf=8192 sndbuf=16384 backlog=32000; # Real IP here server_name <virt domain name>.com ; # "_" is for handle all hosts that are not described by server_name charset off; access_log /var/log/nginx_host_general.access.log main; location / { proxy_set_header Host $host; proxy_set_header X-Real-IP $remote_addr; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; proxy_pass http://<virt ip>; # Real IP here client_max_body_size 16m; client_body_buffer_size 128k; proxy_buffering on; proxy_connect_timeout 90; proxy_send_timeout 90; proxy_read_timeout 120; proxy_buffer_size 16k; proxy_buffers 32 32k; proxy_busy_buffers_size 64k; proxy_temp_file_write_size 64k; } } Apache config: <VirtualHost xxxxxx:80 > ServerName www.<domain>.com ServerAlias www.<domain>.com <domain>.com ServerAdmin webmaster@<domain>.com DocumentRoot /home/<domain>/domains/<domain>.com/public_html ScriptAlias /cgi-bin/ /home/<domain>/domains/<domain>.com/public_html/cgi-bin/ UseCanonicalName OFF <IfModule !mod_ruid2.c> SuexecUserGroup <domain> <domain> </IfModule> <IfModule mod_ruid2.c> RMode config RUidGid <domain> <domain> RGroups apache access </IfModule> CustomLog /var/log/httpd/domains/<domain>.com.bytes bytes CustomLog /var/log/httpd/domains/<domain>.com.log combined ErrorLog /var/log/httpd/domains/<domain>.com.error.log <Directory /home/<domain>/domains/<domain>.com/public_html> Options +Includes -Indexes php_admin_flag engine ON php_admin_value sendmail_path '/usr/sbin/sendmail -t -i -f <domain>@<domain>.com' </Directory> <virtual ip address>:80 is a NameVirtualHost default server www.xx.com (/usr/local/directadmin/data/users/xx/httpd.conf:16) port 80 namevhost www.xx.com (/usr/local/directadmin/data/users/xx/httpd.conf:16) port 80 namevhost www.xx.co.uk (/usr/local/directadmin/data/users/xx/httpd.conf:107) port 80 namevhost www.xx.co.uk (/usr/local/directadmin/data/users/xx/httpd.conf:151) port 80 namevhost www.xx.co.uk (/usr/local/directadmin/data/users/xx/httpd.conf:195) <virtual ip address>:443 is a NameVirtualHost default server www.xx.com (/usr/local/directadmin/data/users/xx/httpd.conf:61) port 443 namevhost www.xx.com (/usr/local/directadmin/data/users/xx/httpd.conf:61) <server ip>:80 is a NameVirtualHost default server localhost (/etc/httpd/conf/extra/httpd-vhosts.conf:29) port 80 namevhost localhost (/etc/httpd/conf/extra/httpd-vhosts.conf:29) port 80 namevhost www.xx.co.uk (/usr/local/directadmin/data/users/admin/httpd.conf:16)

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• Flaws in my PHP development setup - sharing sources causing lags

  - by Wiktor

  I have following development setup for my PHP projects: Working station running on Windows 7 with PhpStorm IDE. GIT for version controlling. CentOS on virtual machine (VirtualBox) with Apache and MySQL (copy of production server). So far, I've been sharing project's source folders between host and guest systems and it was working quite well only really slow. The reason behind this is that Apache was reading files from remote folder (mounted locally). After doing some research, I found out that this set up can be improved by using disk mapping (Samba) instead of folder sharing. So I did that change. I configured my PhpStorm to automatically deploy files to mapped drive. Everything works like a charm now, except for one problem - when I change branches I need to synchronize project's local folder with the one on mapped drive and that takes time, a lot of time (like branching in SVN). Is there another way to handle this than just working on files directly on mapped drive?

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• How do I take an image/backup of Ubuntu partition and restore to VirtualBox VM

  - by whizkid

  I have Ubuntu 10.04 installed on an older hard disk. I recently bought a new disk and already installed Windows 7. I dont want to use the older disk anymore, and I would like to keep on using Ubuntu in a virtual machine on the new disk(to avoid the possible mess-ups of dual boot and I found VirtualBox is the best free tool for this). I wish to keep the exact same data\programs\configurations\settings I had been using in Ubuntu for so long, and avoid the tedious part of having to reconfigure so many things. How do I backup\restore Ubuntu to another disk? I would prefer a free tool to do the backup\restore.

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• Why is Android VM-based? [closed]

  - by adib

  By about 2004, it was clear that ARM is the clear winner for mobile CPUs, beating out MIPS, SH3, and DragonBall. PocketPC (Windows Mobile) applications was natively-compiled (at least most of them - except for .NET compact and its competitors). Likewise, Apple's iOS (named iPhone OS at the time) prefers natively-compiled applications. Then why Android chose a virtual machine based system stack? (the Dalvik VM). Wouldn't it be simpler to just compile applications down to ARM code using GCJ or something? Is the decision influenced by the J2ME-way of doing things, or was just because it's "cool"? Perhaps like most things Java, the culture that prefers multiple levels of indirection and abstractions, they just added another layer of abstraction for "just in case"?

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• Is it possible to make the desktop background transparent or otherwise hidden?

  - by EndangeredMassa

  I'm running Ubuntu in a virtual machine via VirtualBox. I have the seamless mode turned on, which is pretty cool. However, if I move an Ubuntu window around quickly, I can see the redraw of the ubuntu background quickly before it's hidden by VirtualBox again. This isn't a huge deal, but I'd like to fix it, if possible. I see two possible options that don't involve changing VirtualBox code: 1. Make the Ubuntu desktop transparent 2. Make the Ubuntu desktop hidden entirely Is it possible to do either? I know that Compiz Fusion has/had a feature to do this for their cube effects, but I don't think that I can run this on the VM. And, even if I could, I don't want to run those services for this one small feature.

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• JavaScript malware analysis

  - by begueradj

  I want to test websites for JavaScript malware presence . I plan to develop a Python program that sends the URL of a given website to a virtual machine where the dynamic execution of the eventual malicious JavaScript embedded in the website's page is monitored. My questions: Should my VM be Windows or Linux ? What if the malware damages my VM: is there a hint how to avoid that ? Or launch a new VM automatically instead ? If I use telnet client library to communicate with the VM: must I implement a server within the VM to deal with my queries or can I overcome this ? I am jut looing for hints, general ideas. Thank you for any help.

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• Protocol specific channel handlers

  - by Mickael Marrache

  I'm writing an application server that will receive SIP and DNS messages from the network. When I receive a message from the network, I understand from the documentation that at first, I get a ChannelBuffer. I would like to determine which kind of message has been received (SIP or DNS) and to decode it. To determine the message type, I can dedicate port to each type of message, but I would be interested to know if there exist another solution for that. My question is more about how to decode the ChannelBuffer. Is there a ChannelHandler provided by Netty to decode SIP or DNS messages? If not, what would be the right place in the type hierarchy to write my custom ChannelHandler? To illustrate my question, let's take as example the HttpRequestDecoder, the hierarchy is: java.lang.Object org.jboss.netty.channel.SimpleChannelUpstreamHandler org.jboss.netty.handler.codec.frame.FrameDecoder org.jboss.netty.handler.codec.replay.ReplayingDecoder<HttpMessageDecoder.State> org.jboss.netty.handler.codec.http.HttpMessageDecoder org.jboss.netty.handler.codec.http.HttpRequestDecoder Also, do I need to use two different ChannelHandler for decoding and encoding, or is there a possibility to use a single ChannelHandler for both? Thanks

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• How to specify MQ channel table location for .net web application using web.config

  - by Matt

  I've been going around in circles for a while on this one now. I'm trying to connect to a distributed queue manager using a supplied channel table file. I can get this to work if I specify the environmental variable MQCHLLIB and MQCHLTAB on my server. However the IBM documentation states that the .net config file can override these variables. Here is what I have placed in my web.config file: ... <configSections> <section name="CHANNELS" type="System.Configuration.NameValueSectionHandler" /> </configSections> <CHANNELS> <add key="ChannelDefinitionDirectory" value="C:\temp"></add> <add key="ChannelDefinitionFile" value="DSM_MOM_TEST.tab"></add> </CHANNELS> ... And here is the code that is executing: Hashtable properties = new Hashtable(); //Add managed connection type to parameters. const String connectionType = MQC.TRANSPORT_MQSERIES_CLIENT; properties.Add(MQC.TRANSPORT_PROPERTY, connectionType); return new MQQueueManager(queueManagerName, properties); queueManagerName is set to the generic queue manager "*Q101T". However this isn't working and I get an error returned: 2058 MQRC_Q_MGR_NAME_ERROR I've been unable to find any more documentation on how to get this to work other than the environmental variables and the standard mqclient.ini should be overriden by the channels stanza in the web.config. Is there something that I've missed in the code? Any tips would be greatly appreciated.

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• workaround for ORA-03113: end-of-file on communication channel

  - by Jefferstone

  The call to TEST_FUNCTION below fails with "ORA-03113: end-of-file on communication channel". A workaround is presented in TEST_FUNCTION2. I boiled down the code as my actual function is far more complex. Tested on Oracle 11G. Anyone have any idea why the first function fails? CREATE OR REPLACE TYPE "EMPLOYEE" AS OBJECT ( employee_id NUMBER(38), hire_date DATE ); CREATE OR REPLACE TYPE "EMPLOYEE_TABLE" AS TABLE OF EMPLOYEE; CREATE OR REPLACE FUNCTION TEST_FUNCTION RETURN EMPLOYEE_TABLE IS table1 EMPLOYEE_TABLE; table2 EMPLOYEE_TABLE; return_table EMPLOYEE_TABLE; BEGIN SELECT CAST(MULTISET ( SELECT user_id, created FROM all_users WHERE LOWER(username) < 'm' ) AS EMPLOYEE_TABLE) INTO table1 FROM dual; SELECT CAST(MULTISET ( SELECT user_id, created FROM all_users WHERE LOWER(username) >= 'm' ) AS EMPLOYEE_TABLE) INTO table2 FROM dual; SELECT CAST(MULTISET ( SELECT employee_id, hire_date FROM TABLE(table1) UNION SELECT employee_id, hire_date FROM TABLE(table2) ) AS EMPLOYEE_TABLE) INTO return_table FROM dual; RETURN return_table; END TEST_FUNCTION; CREATE OR REPLACE FUNCTION TEST_FUNCTION2 RETURN EMPLOYEE_TABLE IS table1 EMPLOYEE_TABLE; table2 EMPLOYEE_TABLE; return_table EMPLOYEE_TABLE; BEGIN SELECT CAST(MULTISET ( SELECT user_id, created FROM all_users WHERE LOWER(username) < 'm' ) AS EMPLOYEE_TABLE) INTO table1 FROM dual; SELECT CAST(MULTISET ( SELECT user_id, created FROM all_users WHERE LOWER(username) >= 'm' ) AS EMPLOYEE_TABLE) INTO table2 FROM dual; WITH combined AS ( SELECT employee_id, hire_date FROM TABLE(table1) UNION SELECT employee_id, hire_date FROM TABLE(table2) ) SELECT CAST(MULTISET ( SELECT * FROM combined ) AS EMPLOYEE_TABLE) INTO return_table FROM dual; RETURN return_table; END TEST_FUNCTION2; SELECT * FROM TABLE (TEST_FUNCTION()); -- Throws exception ORA-03113. SELECT * FROM TABLE (TEST_FUNCTION2()); -- Works

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• SSH X11 not working

  - by azat

  I have a home and work computer, the home computer has a static IP address. If I ssh from my work computer to my home computer, the ssh connection works but X11 applications are not displayed. In my /etc/ssh/sshd_config at home: X11Forwarding yes X11DisplayOffset 10 X11UseLocalhost yes At work I have tried the following commands: xhost + home HOME_IP ssh -X home ssh -X HOME_IP ssh -Y home ssh -Y HOME_IP My /etc/ssh/ssh_config at work: Host * ForwardX11 yes ForwardX11Trusted yes My ~/.ssh/config at work: Host home HostName HOME_IP User azat PreferredAuthentications password ForwardX11 yes My ~/.Xauthority at work: -rw------- 1 azat azat 269 Jun 7 11:25 .Xauthority My ~/.Xauthority at home: -rw------- 1 azat azat 246 Jun 7 19:03 .Xauthority But it doesn't work After I make an ssh connection to home: $ echo $DISPLAY localhost:10.0 $ kate X11 connection rejected because of wrong authentication. X11 connection rejected because of wrong authentication. X11 connection rejected because of wrong authentication. X11 connection rejected because of wrong authentication. X11 connection rejected because of wrong authentication. X11 connection rejected because of wrong authentication. X11 connection rejected because of wrong authentication. X11 connection rejected because of wrong authentication. kate: cannot connect to X server localhost:10.0 I use iptables at home, but I've allowed port 22. According to what I've read that's all I need. UPD. With -vvv ... debug2: callback start debug2: x11_get_proto: /usr/bin/xauth list :0 2/dev/null debug1: Requesting X11 forwarding with authentication spoofing. debug2: channel 1: request x11-req confirm 1 debug2: client_session2_setup: id 1 debug2: fd 3 setting TCP_NODELAY debug2: channel 1: request pty-req confirm 1 ... When try to launch kate: debug1: client_input_channel_open: ctype x11 rchan 2 win 65536 max 16384 debug1: client_request_x11: request from 127.0.0.1 55486 debug2: fd 8 setting O_NONBLOCK debug3: fd 8 is O_NONBLOCK debug1: channel 2: new [x11] debug1: confirm x11 debug2: X11 connection uses different authentication protocol. X11 connection rejected because of wrong authentication. debug2: X11 rejected 2 i0/o0 debug2: channel 2: read failed debug2: channel 2: close_read debug2: channel 2: input open - drain debug2: channel 2: ibuf empty debug2: channel 2: send eof debug2: channel 2: input drain - closed debug2: channel 2: write failed debug2: channel 2: close_write debug2: channel 2: output open - closed debug2: X11 closed 2 i3/o3 debug2: channel 2: send close debug2: channel 2: rcvd close debug2: channel 2: is dead debug2: channel 2: garbage collecting debug1: channel 2: free: x11, nchannels 3 debug3: channel 2: status: The following connections are open: #1 client-session (t4 r0 i0/0 o0/0 fd 5/6 cc -1) #2 x11 (t7 r2 i3/0 o3/0 fd 8/8 cc -1) # The same as above repeate about 7 times kate: cannot connect to X server localhost:10.0 UPD2 Please provide your Linux distribution & version number. Are you using a default GNOME or KDE environment for X or something else you customized yourself? azat:~$ kded4 -version Qt: 4.7.4 KDE Development Platform: 4.6.5 (4.6.5) KDE Daemon: $Id$ Are you invoking ssh directly on a command line from a terminal window? What terminal are you using? xterm, gnome-terminal, or? How did you start the terminal running in the X environment? From a menu? Hotkey? or ? From terminal emulator `yakuake` Manualy press `Ctrl + N` and write commands Can you run xeyes from the same terminal window where the ssh -X fails? `xeyes` - is not installed But `kate` or another kde app is running Are you invoking the ssh command as the same user that you're logged into the X session as? From the same user UPD3 I also download ssh sources, and using debug2() write why it's report that version is different It see some cookies, and one of them is empty, another is MIT-MAGIC-COOKIE-1

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• In database table design, how does "Virtual Goods" affect table design -- should we create an instan

  - by Jian Lin

  When we design a database table for a DVD rental company, we actually have a movie, which is an abstract idea, and a physical DVD, so for each rental, we have a many-to-many table with fields such as: TransactionID UserID DvdID RentedDate RentalDuration AmountPaid but what about with virtual goods? For example, if we let a user rent a movie online for 3 days, we don't actually have a DVD, so we may have a table: TransactionID UserID MovieID RentedDate RentalDuration AmountPaid should we create a record for each instance of "virtual good"? For example, what if this virtual good (the movie) can be authorized to be watched on 3 devices (with 3 device IDs), then should we then create a virtual good record in the VirtualGoods table, each with a VirtualGoodID and then another table that has VirtualGoodID DeviceID to match up the movie with the DeviceIDs? We can also just use the TransactionID as the VirtualGoodID. Are there circumstances where we may want to create a record to record this "virtual good" in a VirtualGoods table?

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