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• courier-imap w mysql : share a folder between 2 virtual users on debian

  - by Michael

  Hi I have a working courier-imap server on my Debian Etch private server ; users are virtual, authentificatin goes through mysql. It's been working good for years. I would like to share an imap folder between 2 users. I thought I would just have to do something like this : cd path/to/mailusers/dir ln -s path/to/user1/maildir/.folder_to_be_synched path/to/user2/maildir/ After I entered the command, I found that user2 saw a new folder in its imap client, but the folder appeared empty. It is not a permission problem because all the virtual users have the same permissions on the file system. Any idea what I could do ? thanks

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• SQL server peformance, virtual memory usage

  - by user45641

  Hello, I have a very large DB used mostly for analytics. The performance overall is very sluggish. I just noticed that when running the query below, the amount of virtual memory used greatly exceeds the amount of physical memory available. Currently, physical memory is 10GB (10238 MB) whereas the virtual memory returns significantly more - 8388607 MB. That seems really wrong, but I'm at a bit of a loss on how to proceed. USE [master]; GO select cpu_count , hyperthread_ratio , physical_memory_in_bytes / 1048576 as 'mem_MB' , virtual_memory_in_bytes / 1048576 as 'virtual_mem_MB' , max_workers_count , os_error_mode , os_priority_class from sys.dm_os_sys_info

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• How to run multiple Linux installations on a single VirtualBox?

  - by NoCatharsis

  I just started playing with VirtualBox to check out different versions of Linux. I was wondering if it would be possible (and recommended) to set up a single virtual machine with multiple partitions - one for each separate version of Linux, one for swap memory, and one fully shared /home partition? Still new to Linux, but I've read this is a good way to partition so you can share common applications between Linux installations, however I think everything I've read is pertaining to literal partitions and not virtual machines.

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• Secure Apache Virtual Hosts?

  - by Dr Hydralisk

  I am going to host a few small sites on VPS, and each of them are going to run my own custom PHP scripts. I am fairly certain that they are secure (did everything in the book, plus some of which is not in the book) to make sure they can't be exploited. But just to be safe I want to know how I could secure each of the virtual hosts so that they can't escape from there virtual host (if a hacker uploaded a shell they could not go above the www folder a legitimate user can't do in ftp no matter how many times they click ..) folder on Debian and Apache.

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• USB Virtual RAM is not working properly

  - by Haseeb Anwar

  This images are help u in solving my question.1I have installed Windows 7 64 bit. I have made a virtual USB RAM but it is not working properly. First I go to the USB PropertiesReady Boost. Use this device as a virtual RAM and then click Apply then Ok. then I go to My Computer PropertiesAdvance system settingsAdvance(tab)SettingsAdvanceChange. When i click on change button the USB is not here. What can I do. Please answer my question.

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• UCARP: prevent the original master from taking over the VIP when it comes back after failure?

  - by quanta

  Keepalived can do this by combining the nopreempt option and the BACKUP state on the both nodes: Prevent VRRP Master from becoming Master once it has failed Prevent master to fall back to master after failure How about the UCARP? Name : ucarp Arch : x86_64 Version : 1.5.2 Release : 1.el5.rf Size : 81 k Repo : installed Summary : Common Address Redundancy Protocol (CARP) for Unix URL : http://www.ucarp.org/ License : BSD Description: UCARP allows a couple of hosts to share common virtual IP addresses in order : to provide automatic failover. It is a portable userland implementation of the : secure and patent-free Common Address Redundancy Protocol (CARP, OpenBSD's : alternative to the patents-bloated VRRP). : Strong points of the CARP protocol are: very low overhead, cryptographically : signed messages, interoperability between different operating systems and no : need for any dedicated extra network link between redundant hosts. If I don't use the --preempt option and set the --advskew to the same value, both nodes become master. /etc/sysconfig/carp/vip-010.conf # Virtual IP configuration file for UCARP # The number (from 001 to 255) in the name of the file is the identifier # $Id: vip-001.conf.example 1527 2004-07-09 15:23:54Z dude $ # Set the same password on all mamchines sharing the same virtual IP PASSWORD="pa$$w0rd" # You are required to have an IPADDR= line in the configuration file for # this interface (so no DHCP allowed) BIND_INTERFACE="eth0" # Do *NOT* use a main interface for the virtual IP, use an ethX:Y alias # with the corresponding /etc/sysconfig/network-scripts/ifcfg-ethX:Y file # already configured and ith ONBOOT=no VIP_INTERFACE="eth0:0" # If you have extra options to add, see "ucarp --help" output # (the lower the "-k <val>" the higher priority and "-P" to become master ASAP) OPTIONS="-z -k 255" /etc/sysconfig/network-scripts/ifcfg-eth0:0 DEVICE=eth0:0 ONBOOT=no BOOTPROTO= IPADDR=192.168.6.8 NETMASK=255.255.255.0 USERCTL=yes IPV6INIT=no node 1: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast qlen 1000 link/ether c6:9b:8e:af:a7:69 brd ff:ff:ff:ff:ff:ff inet 192.168.6.192/24 brd 192.168.6.255 scope global eth0 inet 192.168.6.8/24 brd 192.168.6.255 scope global secondary eth0:0 inet6 fe80::c49b:8eff:feaf:a769/64 scope link valid_lft forever preferred_lft forever node 2: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast qlen 1000 link/ether 00:30:48:f7:0f:81 brd ff:ff:ff:ff:ff:ff inet 192.168.6.38/24 brd 192.168.6.255 scope global eth1 inet 192.168.6.8/24 brd 192.168.6.255 scope global secondary eth1:0 inet6 fe80::230:48ff:fef7:f81/64 scope link valid_lft forever preferred_lft forever

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• Trouble Connecting to Virtual Machine after IP address Change

  - by David

  I have a VMware image running a copy of Fedora 11 which is hosted on a remote server. The remote server recently had its IP address change. I'm now unable to connect to my virtual machine. The server admin assures me that my virtual machine is running and assigned the new IP address. I have checked the firewalls and had the remote admin restart the VM instance. Neither of these fixed the problem. How do I troubleshoot a remote server which I am unable to SSH to? I'm actually even unable to ping the remote IP (connection timed out).

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• Virtual hosting all resolving to the same files

  - by nona urbiz

  I'm trying to set up virtual hosts on my VPS (centos). I set both domain nameservers to fns1.dnspark.net and fns2.dnspark.net and set an A record there for each domain pointing to my IP address 50.16.219.8. Both domains are currently resolving to the first virtual host. What am I doing wrong? Thanks! NameVirtualHost *:80 <VirtualHost *:80> ServerAdmin [email protected] DocumentRoot /var/www/root/dylanstestserver.com ServerName dylanstestserver.com ServerAlias www.dylanstestserver.com ErrorLog logs/dylanstestserver.com-error-log CustomLog logs/dylanstestserver.com-access_log common </VirtualHost> <VirtualHost *:80> ServerAdmin [email protected] DocumentRoot /var/www/root/repthis.info ServerName repthis.info ServerAlias www.repthis.info ErrorLog logs/repthis.info-error-log CustomLog logs/repthis.info-access_log common </VirtualHost>

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• Trouble Connecting to Virtual Machine after IP address Change

  - by David

  I have a VMware image running a copy of Fedora 11 which is hosted on a remote server. The remote server recently had its IP address change. I'm now unable to connect to my virtual machine. The server admin assures me that my virtual machine is running and assigned the new IP address. I have checked the firewalls and had the remote admin restart the VM instance. Neither of these fixed the problem. How do I troubleshoot a remote server which I am unable to SSH to? I'm actually even unable to ping the remote IP (connection timed out).

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• Virtual Hosting in RHEL5

  - by Kumar P

  We having RHEL5 linux server with few windows xp clients. We providing web development in php. Now my developers as for common local php server for keep their projects in same place. Currently proxy server and samba sharing are running in RHEL5 server. I installed httpd,php,MySQL in server. And i would like to configure virtual hosting too for LAN. What i want do for it ? In server we have 2 Ethernet ports, 1 for local connection and another one for Internet. Internet provided by ADSL provider. (192.168.0.0 series for ADSL modem connection and 10.1.1.0 for LAN connection. If i want to use virtual hosting , am i want to setup local DNS server ? My requirements are, setup php with mySQL server for Local clients with multiple hosting , without disturbing proxy and samba. Help me to solve it.

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• How to rewrite to a virtual directory with a different application

  - by user42181

  Hi, I have a CMS application that manages multiple websites, today whenever i change the codebehind of one of these websites - i have to rebuild the dll for all websites, deploy it - this disconnects all current sessions and is really bad. The iis is configured to listen to all domain requests, if the request is to one of the websites' domain , the application rewrites it, or example, if someone requests for www.example.com, and example.com is configured in the application to be website 12, it is rewritten to www.example.com/websites/12/default.aspx. This is done for all websites. We want to seperate the dlls of the websites from each other, and from the main CMS, we have a virtual directory to each websites, but when trying to rewrite to it, we discover that IIS support this (we get an "Could not load type '_12._Default'". error). How can we perform this rewrite so it does rewrite to virtual directories, or if anyone has any other solution for the initial dll seperation problem. Thanks in advance

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• Online Windows Server Virtual Hard Drive Images for Use with VMWare Server 1.0

  - by charfeddine.ahmed

  Hello there, I have a remote Server running the VMWare hypervisor. I want to create a virtual machine running Windows Server. However I can't upload mine since my internet connection is slow (would take me days to do the upload). Microsoft has public hard drive images with Windows Server Trial on them, but they work for Virtual PC. I am looking for such files that can be used with VMWare Server. That case I can download these files directly to the server which enjoys a fast connection. Thanks in advance.

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• Can I run 64-bit VM guests on a 32-bit host?

  - by Maestro1024

  Can I run 64-bit VM guests on a 32-bit host? If I have a physical PC with 32 bit can I launch a VM that is 64 bit? What virtual machine software (Virtual PC or VirtualBox or other) would allow this? I read out there that VMware may support this but I am looking for something Open source or free. Host would preferably be a Windows host but could be Linux. Guest needs to be Windows. Thanks

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• Get OS information with WMI from Small Business Server 2011 for Windows 2008 virtual machine

  - by Drew

  In my organization, the main server is Windows Small Business 2011. It uses a WMI service (I think) to get the Security and Update status of computers on the network. I have a Server 2008 virtual machine in VirtualBox with bridged network adapter. The SBS will not correctly get the status of, nor the operating system of, the Server 2008 VM. What settings do I have wrong / can I actually do this for a virtual machine in the first place? -- I do not know what further information might be needed, just ask and I will post.

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• DRAC for remote OS install w/o Virtual Media

  - by The Diamond Z

  I have a few DELL servers in a remote DC and our ISP has been very kind about doing OS installs for us. However, as we move to Production and multiple DC's I'd like to be able to do the installs/re-installs internally and DRAC Enterprise w/SDRAM seems ideal. My question is, how do you get your install ISO's on to the SDRAM? Can I just copy it from a local DVD (temp USB hookup) or FTP? What's the advantage to the SDRAM over just buying a USB dongle (to leave plugged into the server) and installing a bootable install ISO? We're a virtual org generally using DSL (2mb) connections to the DC over the Internet and using 'Virtual Media' isn't viable for us.

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• Set origin for forwarder based on virtual domain in Postfix

  - by Andrew Koester

  I currently have a machine set up to operate with two domains. The main name uses the standard Unix-user delivery, and the second domain is entirely virtual (using virtual_alias_domains and virtual_alias_maps), with the second domain only forwarding mail. However, when mail is forwarded, it still appears to be delivered by the host of the primary domain (presumably set by myorigin.) Is it possible to get it so when mail is forwarded to the virtual domain, it appears to be delivered by it as well? That domain is on another IP and I'd like to use it so the mail stays consistent. Thanks.

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• Apache Virtual Host Configuration

  - by Carl

  I have been searching the internet for an hour now, and I was hoping for a quick hint here so that I could solve my problem a wee bit faster. My virtual server is so far only accessible through an IP address, no DNS entry yet, and so far none needed either. The problem I have is with Apache2, the virtual hosts are puzzling me. What I need is: Access to my project (based on Symfony2) from the outside with the IP address Access to my project from localhost What I have got: Access from the outside results in rendering the websites in /var/www/vhosts/htdocs/default, while from the inside results in rendering the websites in /var/www. Why the difference? What is a recommended configuration for my use case?

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• VPS hang when one Virtual CPU usage is 100%

  - by garconcn

  We are using Xen Center to manage all of our cPanel VPS servers. The hardware has two CPUs(Intel(R) Xeon(R) CPU [email protected]) and 32GB memory. Each hardware has 4 cPanel VPS and each VPS has 8GB memory and 4 Virtual CPUS. Every one or two months, one of the VPS server will hang because one Virtual CPU usage is 100% and it couldn't release the CPU unless we use force reboot. We have 10 similar hardware, and this cause our server down almost every day. We have tried to avoid the Statistics Processing and Fantastico update during the night, but the problem still happens randomly. I can not find anything in the server log when it hangs. Any clue? Thank you.

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• Virtual hosts and subdomains, need configuring on live, not on dev

  - by rix

  I have a query about subdomains and virtual hosts. On my dev server, I ca nset up a new virtual hosts and point it to a subdomain, ie: newdomain.mydevserver.com All is fine and I can access 'newdomain/mydevserver/com' I can also do 'host newdomain.mydevserver.com' However, when I do the same with my main server I get the server couldn't be contacted error - I'm guessing that's because i need a cname or a record for the DNS. My question is, why does it seem that i can create subdomains on my dev but not on my live server? Help appreciated, many thanks!

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• Best window manager for Linux for Virtual Desktop / Multimon

  - by mattcodes

  Previous used Ubuntu Gnome with Compiz but for my basic spec intel macbook (4 years old) its a little too heavyweight. So for now Im back on my macbook with os x, but now considering going back to Linux. Im looking for a window manager that has the following properties: 1) Supports virtual desktop (need 4 minimum) 2) Works well with multi monitors - can move an app with shortcut from one monitor to the other (on same virtual desktop) 3) Can remember window position (i.e. open vim on 2 monitor) - however must coerce everything back to first window when 2nd screen is unplugged 4) Keyboard shortcut friendly 5) Not too hard to install 6) Works well with minimum hardware such as integrated graphics Please suggest and share your experiences

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• how to connect virtual box os and local machine

  - by soul

  This question is in connection to this question asked by a user before: http://superuser.com/questions/73470/virtualbox-vdi-file-to-vmware On how to convert vdi to vmdk or vmx using vmware converter. How do I connect the windows xp that is in virtual box to the local computer (windows 7) in a network. Because I got this error while I tried following this instruction: Give the IP address, username and password of the remote machine that you would like to convert and then hit next I got this error in vmware converter: Unable to connect the specified host 10.0.2.15 which is the ip address of the xp machine inside virtual box. It also said that there is a network configuration problem. And when I inputted the ip address from whatismyip.com which should be the same as the ip address on local machine. I didn't get the previous error but I got another one, it said that: insufficient permissions to connect to "ip address" What solution can you suggest for this problem?

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• Lightweight window manager for Linux for Virtual Desktop / Multimon

  - by mattcodes

  Previous used Ubuntu Gnome with Compiz but for my basic spec intel macbook (4 years old) its a little too heavyweight. So for now Im back on my macbook with os x, but now considering going back to Linux. Im looking for a window manager that has the following properties: Supports virtual desktop (need 4 minimum) Works well with multi monitors - can move an app with shortcut from one monitor to the other (on same virtual desktop) Can remember window position (i.e. open vim on 2 monitor) - however must coerce everything back to first screen when 2nd screen is unplugged Keyboard shortcut friendly Not too hard to install Works well with minimum hardware such as integrated graphics Please suggest and share your experiences

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• HP Virtual Connect and VLAN Tagging

  - by JaapL

  We have a c7000 chasis with the ability to have 8 uplinks per ESX host. Only 6 are currenlty active. I have a Virtual Switch with multiple vlan port groups and all the VMs are working fine. Recently we've been asked to setup network load balancing for one of our VMs, so we had our Virtual Connect engineer activate the last two uplinks. We then created a new vSwitch and added the two new uplinks to this vSwitch. We then moved the VM to this new vSwitch, but we get no connectivity. What could be the issue? We also added the appropriate VLAN ID. The VConnect engineer says everything is configured correctly and networking TEAM says the appropriate trunking is setup, so we are at a loss...

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• Windows 2008 RC2 IIS6 SMTP Virtual Servers - Limited to 4

  - by webnoob

  In line with this post: http://www.hugheserblog.com/2012/05/22/error-creating-iis-smtp-virtual-servers/ I am receiving the same issues: When we tried to add more than 4 IIS SMTP virtual servers, we got the error within IIS, “The system cannot find the path specified.” This post is almost 2 years old and my server is up to date with Windows updates so I assumed it would be fixed already. Does anyone know if I need to do something special (ie. contact Microsoft) to get a special fix for this? The information in the post suggests it should have been included in an update.

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• Moving a Domain Controller VM from one server to another

  - by Mike

  I have a Hyper-V Virtual Machine that is a Domain Controller, specifically it is our main DC and holds all 5 FSMO roles. If I wanted to move this Virtual Machine to another VM Server than the one it is on currently, is it as simple as taking the .VHD, moving it to another server, and creating a VM in Hyper-V on the new server for it? Or are there other things to consider that could get screwed up from doing this? Thanks

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