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• I/O APIC on Virtualbox

  - by RidDeBakTiYar

  I'm trying to use the PIT to do APIC timer calibration, and I want to use the PIT through I/O APIC instead of PIC. On Bochs I get interrupts from the PIT at the asked frequency from the I/O APIC, while on Virtualbox I can't receive a single interrupt. It must be an I/O APIC configuration problem because as I unmask the first PIC entry, the IRQ fires. However that's not what I want. Can you imagine any possible condition that wouldn't make Virtualbox fire the IRQ? I'm not assuming single I/O APIC configuration (even though Virtualbox has only 1). I'm not assuming identity mappings between ISA IRQs and I/O APIC GSIs (using ACPI MADT table to get I/O APIC base address and Int override). I'm setting the Trigger Mode and Polarity bits correctly (on Virtualbox they are set as '00 - default' which means edge high right?). I'm putting the BSP APIC ID into the Destination field (using Physical destination) and vector 0x20. Being the BSP APIC ID 0 on Virtualbox, it ends up with 0x0000000000000020 written to the IOREDTBL. And, just in case I'm getting the wrong values from the Interrupt Override descriptor, I'm setting this value to all the IOREDTBL entries (I know this is very very bad, and it wont be kept as I understand what's going on). The only thing I didn't check out is Local APIC configuration. Actually I'm not writing any value to the BSP LAPIC. Just reading the APIC ID and using it to boot APs through IPIs. And obviously I'm setting bit 11 in the IA32_APIC_BASE MSR to enable the LAPIC. Any ideas? Thanks in advance.

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• How to set up a serial connection to a Windows 7 computer

  - by oli_arborum

  I need to set up a "dial in" connection to a Windows 7 (Ultimate) computer via a serial null-modem cable to be able to connect from a Windows XP client to that computer and exchange data over IP. Question 1: How do I do that? I did neither find the information via Google nor in the MSDN. Seems like no one tried ever before... ;-) I already managed to install a legacy modem device called "Communications cable between two computers" and found the menu entry "New Incoming Connection..." in Network and Internet Network Connections. When I finish this wizard I get the message that the "Routing and Remote Access service" cannot be started. In the event viewer I see the following error messages: "The currently configured authentication provider failed to load and initialize successfully. The requested name is valid, but no data of the requested type was found." (Source: RemoteAccess, EventID: 20152) "The Routing and Remote Access service terminated with service-specific error The requested name is valid, but no data of the requested type was found." (Source: Service Control Manager, EventID: 7024) The Windows 7 installation is "naked", i.e. no additional software or services are installed. Question 2: Am I on the right path to set up the connection? Question 3: How can I get the Routing and Remote Access service running?

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• SQL Server Agent refuses to start

  - by Geo Ego

  I'm having a problem with SQL Server 2005 where the SQL Server Agent suddenly refuses to start. If I attempt to start it through Services, I get the error "SQL Server Agent (MSSQLSERVER) service on Local Computer started and then stopped." In the Application log, I have the following entry: Event Type: Error Event Source: SQLSERVERAGENT Event Category: Service Control Event ID: 103 Date: 5/20/2010 Time: 11:07:07 AM User: N/A Computer: SHAREPOINT Description: SQLServerAgent could not be started (reason: Unable to connect to server 'SHAREPOINT'; SQLServerAgent cannot start). This database has been running fine for four months. It contains a SharePoint configuration database, which two days ago stopped working, throwing me a message that the configuration database cannot be reached. It was then that I realized the SQL Server Agent was not running, and I have been unable to restart it. I have tried running it with both the local system account and the network service account, with the same results. So far, I have tried: Granting the administrators group, network service, and SharePoint SQL Server Agent account public and sysadmin roles on the database. Granting the administrators group, network service, and SharePoint SQL Server Agent account full permissions to the entire MSSQL directory and all files within. I still have no joy.

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• Possible DNS issue after a reinstall of Windows Server 2000 (get off my lawn)

  - by cop1152

  I just replaced a drive on a Win2000 Server that replicates AD and issues out DHCP at one of our offices. I successfully joined it to the domain, setup range of IP's, etc, but am still having issues. I cannot RDC to it with name or IP. I can ping it, browse to it with Windows Explorer, and remote to it with some other software, but not RDC. The other issue is this: Users are unable to authenticate on it. They receive the message 'username or password incorrect' (or something like that). Changes made on the main domain controller seem to take forever to trickle down. The most significant entry in the DNS Server Log is Event ID 7062: The DNS Server Encountered a Packet Addressed to Itself. At least, I think its significant. The Directory Services Log shows numerous Event IDs 1265: The attempt to establish a replication link with parameters failed with the following status: The DSA operation is unable to proceed because of a DNS lookup failure. Does this make any sense to anyone? I feel like its something very simple that I am overlooking. Thanks in advance.

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• Configure an Azure VM for Dynamic DNS for Cloud Services

  - by Adam

  I am trying to setup an azure VM with proper DNS to allow multiple cloud services to communicate across cloud service boundaries. As I understand it, I need to provide my own DNS server. I do not have any on-premise infrastructure, so I am trying to configure an Azure VM to act as my DNS. This SO question (http://stackoverflow.com/questions/21858926/azure-how-to-connect-one-cloud-service-with-other-in-one-virtual-network) is very similar to my setup. This article (http://msdn.microsoft.com/en-us/library/windowsazure/jj156088.aspx) describes my particular case: Name resolution between virtual machines and role instances located in the same virtual network, but different cloud services Here is what I have done: Created Azure Virtual Network and declared subnets for each of my cloud services. Created an Azure VM (Windows 2012 R2) with DNS enabled RDP to the VM and enabled the DNS role and installed features Added the appropriate NetworkConfiguration xml section to each of my cloud services .csfg files Re-deployed my cloud services I have verified that I setup the virtual network and networkconfiguration properly because my cloud service hosts are able to communicate with each other if I use the internal ips. However, name resolution doesn't appear to be working, and it doesn't appear that my cloud service roles can communicate with my DNS server. How do I configure my VM so that my different cloud services roles register themselves with my DNS server? EDIT: I think I am 1 step closer to getting this to work. The cloud services that I was using are in an old affinity group which is not supported by VMs, so I was unable to add my VM into my virtual network. I created a new VNET in a new affinity group with my VM added into it. However, I still don't know how to configure the azure VM's DNS server so that the cloud services register themselves for name resolution. Also, an added bonus guaranteed to get a +1 would be to explain if it is possible to register a DNS entry for the VIP for an internal endpoint of my cloud services so we can get load balancing. Thanks!

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• Win7 - Some pinned program's icons are corrupt, show default

  - by Andrew Backer

  I have both FF 3.6 & Chrome pinned to my taskbar in win7. The icons for these two programs show up as the ugly default icon from yesteryear. Strange. Is there some way to force an icon refresh for pinned programs? When I first added them they showed properly, but several days later they reverted to this state Un-pinning the program causes the icon to show up properly, and re-pinning it causes it to break again. These other proggies show up fine: Media Center, Media Player Classic HC, Hulu Desktop, WMP, and the folders. I have 2 user accounts on this box, and both are showing this behavior. I have tried changing the taskbar icon size to 'small' and back, but to no effect. Edit (Add) The icons show up as broken in the start menu too, but I can navigate to the EXE directly. When I click "change icon" in the properties for the start menu entry I get the error : Can not find %ProgramFiles%\Google\Chrome...\chrome.exe.

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• Amazon VPC NAT not working

  - by rpkelly

  I'm trying to create a NAT instance for my VPC to allow instances on private subnets connect to the internet (most importantly, S3). I tried following the instructions here: http://docs.amazonwebservices.com/AmazonVPC/2011-07-15/UserGuide/index.html?VPC_NAT_Instance.html . Unfortunately, the instances in the private subnet (call it 10.10.2.0/24) cannot reach the internet. I have done the following: Create a NAT instance (Amazon's ami-vpc-nat-1.0.0-beta.i386-ebs (ami-d8699bb1)) in public subnet (call it 10.10.1.0/24). Changed "Source / Dest Check" to disabled. Created a new entry in the default routing table (which is used by 10.10.2.0/24) and had it point to the ID of the newly created instance. Associated an Elastic IP address with the NAT instance. Allowed all outbound traffic on the security group of the NAT instance. Ensured that all traffic could pass between the two subnets. I've tried also doing this with an existing instance using iptables, but had no luck. And I have verified that sys.net.ipv4.ip_forward is 1, just in case anyone was wondering. And I still have no internet connectivity from the instances on 10.10.2.0/24. Does anyone have any suggestions?

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• How to manually start and re-start Apache with mod_wsgi powering a password protected Python WSGI app?

  - by Mahmoud Abdelkader

  I'm working on a project where I have to meet some regulatory requirements that require at least 3 out of 5 authorized users to start a backend web service that handles very sensitive information using pre-assigned passwords. Right now, the prototype has been approved and is running using Python's wsgiref.simple_server(), which I have programmed to manually prompt for the passwords. Now that the prototype has been approved, I have to migrate the web application to a production environment where I will need to run it behind Apache and mod_wsgi. I have two questions: Right now, I use a thin Python wrapper around expect to programmatically allow for remote password entry. How do I get Apache to prompt me for a password before starting? Will this have to be in the app.wsgi script that's executed by mod_wsgi? How would that work since Apache daemonizes, and thus, has no stdin! Will I have to worry about some type of code reload? Apache probably has some maximum number of requests before it kills and restarts another worker process, but, would this require a password prompt as well?

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• Problem with PXE boot

  - by user70523

  I followed the following link for PXE boot, http://www.howtoforge.com/setting-up-a-pxe-install-server-on-ubuntu-9.10-p3 and I was able to ping the client from the server and also when I booted up the client It is getting the IP address from the server. But later,I got this error PXELinux 3.82 2009-06-09 . . . [other informations] !PXE Entry point found (we hope) at 9D3B:0109 via plan A UNDI code segment at 9D3B len 16C2 UNDI data segment at 933B len A000 Getting cached packet 01 02 03 . . . [other informations] TFTP prefix: Trying to load: pxelinux.cfg/ec5db4c0-74fe-d511-b9e7-3d9235afe5a1 Trying to load: pxelinux.cfg/01-00-17-31-b6-5e-a8 Trying to load: pxelinux.cfg/0A64491E Trying to load: pxelinux.cfg/0A64491 Trying to load: pxelinux.cfg/0A6449 Trying to load: pxelinux.cfg/0A644 Trying to load: pxelinux.cfg/0A64 Trying to load: pxelinux.cfg/0A6 Trying to load: pxelinux.cfg/0A Trying to load: pxelinux.cfg/0 Trying to load: pxelinux.cfg/default Unable to locate configuration file Boot failed: press a key to retry or wait for reset I have put all the files mentioned in the link in tftpboot. Can anyone explain what could be the problem. Thanks in advance

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• IIS 6 + ASP.NET web service - DW20 and stackoverflow exception

  - by pcampbell

  Consider an ASP.NET SOAP web service that starts up fine, but craters hard when receiving its first hit. Please note that this is deployment works in the Test environment, but not in the PreProd environment. Both are Windows 2003 SP3 + IIS 6 + ASP.NET 3.5. All up-to-date. The behaviour that we're seeing is: restart the site & app pool the app pool is configured to run under Network Service. browsing to the .asmx and .wsdl responds normally, as expected. send a normal well-formed SOAP request / normal payload to the web service 100% CPU usage after 5 seconds, the page request / site returns "Service Unavailable" no entry is created in the IIS log file (i.e. c:\windows\system32\logfiles\W3C-foo) the app pool ends up being stopped The processes that hit the CPU hard are dw20.exe. I am unsure why Dr Watson is involved here. Event Log shows an ASP.NET Runtime error: Task Manager: Event log text: EventType clr20r3, P1 w3wp.exe, P2 6.0.3790.3959, P3 45d6968e, P4 errormanagement, P5 1.0.0.0, P6 4b86a13f, P7 24, P8 0, P9 system.stackoverflowexception, P10 NIL. Questions Any thoughts on what this system.stackoverflow exception might be? Given that the code is the same between environments, might it be a payload problem? Could it be a configuration issue? You can see the name of my .NET assembly there in the exception message: "ErrorManagement"

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• Failed to su after making a chroot jail

  - by arepo21

  On a 64 bit CentOS host I am using script make_chroot_jail.sh to put a user in a jail, not permitting it to see anything expect it's home at /home/jail/home/user1. I did it typing this: sudo ./make_chroot_jail.sh user1 after, when trying to connect to user1 first i was getting an error like: /bin/su: user guest does not exist i have fixed this by copying some missed libraries: sudo cp /lib64/libnss_compat.so.2 /lib64/libnss_files.so.2 /lib64/libnss_dns.so.2 /lib64/libxcrypt.so.2 /home/jail/lib64/ sudo cp -r /lib64/security/ /home/jail/lib64/ But now, when trying to connect to user1 typing su user1 and then typing it's password, i am getting this error: could not open session So the question is how to connect to user1 in this situation? P.S. Here are the permissions of some files, this might be helpful in order to provide a solution: -rwsr-xr-x 1 root root /home/jail/bin/su drwxr-xr-x 4 root root /home/jail/etc -rw-r--r-- 1 root root /home/jail/etc/pam.d/su -rw-r--r-- 1 root root /home/jail/etc/passwd -rw------- 1 root root /home/jail/etc/shadow UPDATE1 After some modifications i managed to connect to user1, but the session closes immediately! I guess this a PAM issue, however cant find a way to fix it. Here the log entry for close action from /val/log/secure: Oct 6 15:19:42 localhost su: pam_unix(su:session): session closed for user user1 What makes the session to exit immediately after launching?

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• Xvnc4 started from xinetd only displays empty gray X screen

  - by scott8035

  I'm attempting to setup an Ubuntu 10.10 box so that anyone can connect to port 5900 and be greeted by the gdm login manager. To do so, I added a vnc entry in /etc/services and I am starting Xvnc4 using this xinetd config file: service vnc { protocol = tcp socket_type = stream wait = no user = nobody server = /usr/bin/Xvnc server_args = -geometry 1000x700 -depth 24 -broadcast -inetd -once -securitytypes None } This kind of works...I can start multiple sessions all to port 5900, and I get an X screen. The problem is that I only get an empty, gray X screen with no applications started. I know when you run vncserver from the command line it will look to your ~/.vnc/ directory for your passwd and xstartup files, and I think what I want to do is put "gnome-session" into the xstart file. However, which xstartup file? The running user is "nobody" who obviously doesn't have a ~/.vnc/ directory. I tried a /root/.vnc/xstartup file and a ~scott/.vnc/xstartup file and it doesn't look like they were even read. I changed the xinetd vnc service so that it would "strace" Xvnc4. I looked thru all the "open" lines and didn't get a clue as to what file it was trying to read for xstart. Can anyone help? I just want a terminal server where the user is presented with a gdm login screen.

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• Apache ProxyPass with SSL

  - by BBonifield

  I have a QA setup that consists of multiple internal development servers and one world-accessible provisioning machine that is setup to proxy pass the web traffic. Everything works fine for non-SSL requests, but I'm having a hard time getting the SSL logic working as well. Here's a few example vhost blocks. <VirtualHost 192.168.168.101:443> ProxyPreserveHost On SSLProxyEngine On ProxyPass / https://192.168.168.111/ ServerName dev1.site.com </VirtualHost> <VirtualHost 192.168.168.101:80> ProxyPreserveHost On ProxyPass / http://192.168.168.111/ ServerName dev1.site.com </VirtualHost> <VirtualHost 192.168.168.101:443> ProxyPreserveHost On SSLProxyEngine On ProxyPass / https://192.168.168.111/ ServerName dev2.site.com </VirtualHost> <VirtualHost 192.168.168.101:80> ProxyPreserveHost On ProxyPass / http://192.168.168.111/ ServerName dev2.site.com </VirtualHost> I end up seeing the following error in the provisioner's error log. [Fri Jan 28 12:50:59 2011] [warn] [client 1.2.3.4] proxy: no HTTP 0.9 request (with no host line) on incoming request and preserve host set forcing hostname to be dev1.site.com for uri / As well as the following entry in the destination QA machine's access log. 192.168.168.101 - - [22/Feb/2011:08:34:56 -0600] "\x16\x03\x01 / HTTP/1.1" 301 326 "-" "-"

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• App-V Problems After SCCM 2007 SP2 Upgrade

  - by GAThrawn

  We're running an SCCM (MS System Centre Config Manager, successor to SMS) 2007 environment and delivering a number of applications to clients virtualized using App-V 4.5.1. The App-V apps are delivered by SCCM in Download-and-Execute, not streaming mode. The SCCM environment was recently service packed to SCCM 2007 SP2 (amongst other things this gives Win7 support). We also pushed out the updated SCCM clients to our workstations. This seems to have broken file associations for virtual apps for a large number of our users. The users can still open their App-V apps by finding the specific app on their Start Menu and clicking it's icon, but double-clicking an associated file in Explorer, or opening an email attachment gives the "This action is only valid for installed applications" error. There is a Technet blog entry from the App-V team talking about this issue "Upgrade to ConfigMgr 2007 SP2 may break App-V File Type Associations" but running the script there comes back saying "The User Interface option has been updated" but hasn't seemed to fix the problems for any of our users. Unfortunately the Technet blogs don't seem to have comments switched on so you can't see how this has worked out for other people. Anyone else had this problem, have you found any other way to fix it?

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• Redirect specific domains with DNS

  - by user66377

  Currently we filter internet content using OpenDNS, our internal Windows DC/DNS servers point to the router's DNS, which then points to the OpenDNS servers. This works well to block all computer's on the network equally. New issue. We now need to separate what computers can go to what sites. So facebook is blocked for everyone right now, but I need to open it up to the 3 community computers now. The 3 community computers will be on an untrusted network seperate from the company computers so they can have their own DNS server, from their own router. The issue is though they still must connect to the internet using the same IP address. So OpenDNS sees the same IP and blocks them the same way. We are looking into getting a second IP, but it's not likely an option without going up to the next major level with our ISP which we don't want to do. My thought is this. Can I setup a DNS server on the untrusted network, and then depending on the request that comes in, have it send it to either OpenDNS or our ISP's DNS? Example www.facebook.com and www.youtube.com are both on the OpenDNS blacklist. So if they go to www.youtube.com, the local DNS server goes to the ISP's DNS to get the IP and thus the client gets the right IP and can go to the site. This would be manually entered for each allowed site thus creating a white list. Then if they go to www.facebook.com, since the local DNS server does not find an entry, it sends the request to OpenDNS, which then sees the site is on the blacklist, and thus sends the it's blocked webpage. The local DNS server can be either Bind on Linux or MS DNS on Window 2008. If this can be done, can you give some direction as well as I've never setup a DNS such as this before. Thanks

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• DEB: "Provides:" field ignored

  - by Creshal

  I need to replace a package with a custom one, which gets its own name (foo-origpackage). To allow it to be used as drop-in replacement, I added the Provides: origpackage line to the control file. apt-cache show foo-origpackage lists the "Provides" entry just fine. However, when I want to install a file depending on origpackage, it fails ("Package origpackage not installed"). Is there some distinction between "real" and virtual packages I'm missing? EDIT: To be precise, what I want to replace is xen-utils-common for Squeeze. My tao-xen-utils-common has the following control file: Source: tao-xen-utils-common Section: kernel Priority: optional Maintainer: Creshal <[email protected]> Build-Depends: debhelper Standards-Version: 3.8.0 Homepage: http://tao.at Package: tao-xen-utils-common Architecture: all Depends: gawk, lsb-base, udev, xenstore-utils, tao-firewall Provides: xen-utils-common Conflicts: xen-utils-common Replaces: xen-utils-common Description: Xen administrative tools - common files (modified) The userspace tools to manage a system virtualized through the Xen virtual machine monitor. Modified for use with TAO Firewall. Installing xen-utils-4.0 fails, however: foo@bar# apt-cache showpkg tao-xen-utils-common Package: tao-xen-utils-common Versions: 4.0.0-1tao1 (/var/lib/apt/lists/repo.tao.at_dists_stable_main_binary-amd64_Packages) (/var/lib/dpkg/status) Description Language: File: /var/lib/apt/lists/repo.tao.at_dists_stable_main_binary-amd64_Packages MD5: 7c2503f563fca13b33b4eb3cbcb3c129 Reverse Depends: tao-firewall,tao-xen-utils-common tao-firewall,tao-xen-utils-common Dependencies: 4.0.0-1tao1 - gawk (0 (null)) lsb-base (0 (null)) udev (0 (null)) xenstore-utils (0 (null)) tao-firewall (0 (null)) xen-utils-common (0 (null)) xen-utils-common (0 (null)) Provides: 4.0.0-1tao1 - xen-utils-common Reverse Provides: foo@bar# apt-get install xen-utils-4.0 Reading package lists... Done Building dependency tree Reading state information... Done The following extra packages will be installed: xen-utils-common Suggested packages: xen-docs-4.0 The following packages will be REMOVED: tao-xen-utils-common The following NEW packages will be installed: xen-utils-4.0 xen-utils-common Edit:foo@bar# apt-cache policy xen-utils-4.0 xen-utils-4.0: Installed: (none) Candidate: 4.0.1-4 Version table: 4.0.1-4 0 500 http://ftp.at.debian.org/debian/ stable/main amd64 Packages 4.0.1-4 0 500 http://security.debian.org/ stable/updates/main amd64 Packages

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• Migrating email forwarding entries from DirectAdmin to Google App (Free edition)

  - by bobo

  I have a website hosted in a shared hosting account and it contains a DirectAdmin (DA) control panel. From there, I can see some email forwarding entries. I would like to migrate the email server to the Google App's, I am going to change the MX records to point to Google email server in the DA. For the existing email accounts that I see in the DA, I will re-create them in the Google App. But for those email forwarding entries, I am confused. If I keep them there, will they still work after I have changed the MX record pointing to the Google email server? If not, this means I will need to re-create them in the Google App, right? Unfortunately, Google App (Free edition) does not seem to allow email forwarding like those in DA. Unless I choose to use other editons (http://www.google.com/support/a/bin/answer.py?answer=175745). In DA, when I have created an email forwarding entry such as [email protected] - [email protected], I do not really need to create a dummy [email protected] email account and DA will still do the forwarding properly. The best I can do now, without upgrading the Google App edition, is to simply create dummy email accounts in the Google App and setup forwarding inside that email account, is this correct?

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• How do I keep a table in sync across multiple SQL Databases?

  - by Refracted Paladin

  I have a Win Form, Data Entry, application that uses 4 seperate Data Bases. This is an occasionally connected app that uses Merge Replication (SQL 2005) to stay in Sync. This is working just fine. The next hurdle I am trying to tackle is adding Filters to my Publications. Right now we are replicating 70mbs, compressed, to each of our 150 subscribers when, truthfully, they only need a tiny fraction of that. Using Filters I am able to accomplish this(see code below) but I had to make a mapping table in order to do so. This mapping table consists of 3 columns. A PrimaryID(Guid), WorkerName(varchar), and ClientID(int). The problem is I need this table present in all FOUR Databases in order to use it for the filter since, to my knowledge, views or cross-db query's are not allowed in a Filter Statement. What are my options? Seems like I would set it up to be maintained in 1 Database and then use Triggers to keep it updated in the other 3 Databases. In order to be a part of the Filter I have to include that table in the Replication Set so how do I flag it appropriately. Is there a better way, altogether? SELECT <published_columns> FROM [dbo].[tblPlan] WHERE [ClientID] IN (select ClientID from [dbo].[tblWorkerOwnership] where WorkerID = SUSER_SNAME()) Which allows you to chain together Filters, this next one is below the first one so it only pulls from the first's Filtered Set. SELECT <published_columns> FROM [dbo].[tblPlan] INNER JOIN [dbo].[tblHealthAssessmentReview] ON [tblPlan].[PlanID] = [tblHealthAssessmentReview].[PlanID] P.S. - I know how illogical the DB structure sounds. I didn't make it. I inherited it and was then told to make it a "disconnected app." Go figure!

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• mod_rewrite REQUEST_FILENAME doesn't contain absolute path

  - by Paul Dixon

  I have a problem with a file test operation in a mod_rewrite RewriteCond entry which is testing whether %{REQUEST_FILENAME} exists. It seems that rather than %{REQUEST_FILENAME} being an absolute path, I'm getting a path which is rooted at the DocumentRoot instead. Configuration I have this inside a <VirtualHost> block in my apache 2.2.9 configuration: RewriteEngine on RewriteLog /tmp/rewrite.log RewriteLogLevel 5 #push virtually everything through our dispatcher script RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_FILENAME} !-d RewriteRule ^/([^/]*)/?([^/]*) /dispatch.php?_c=$1&_m=$2 [qsa,L] Diagnostics attempted That rule is a common enough idiom for routing requests for non-existent files or directories through a script. Trouble is, it's firing even if a file does exist. If I remove the rule, I can request normal files just fine. But with the rule in place, these requests get directed to dispatch.php Rewrite log trace Here's what I see in the rewrite.log init rewrite engine with requested uri /test.txt applying pattern '^/([^/]*)/?([^/]*)' to uri '/test.txt' RewriteCond: input='/test.txt' pattern='!-f' => matched RewriteCond: input='/test.txt' pattern='!-d' => matched rewrite '/test.txt' -> '/dispatch.php?_c=test.txt&_m=' split uri=/dispatch.php?_c=test.txt&_m= -> uri=/dispatch.php, args=_c=test.txt&_m= local path result: /dispatch.php prefixed with document_root to /path/to/my/public_html/dispatch.php go-ahead with /path/to/my/public_html/dispatch.php [OK] So, it looks to me like the REQUEST_FILENAME is being presented as a path from the document root, rather than the file system root, which is presumably why the file test operator fails. Any pointers for resolving this gratefully received...

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• Asterisk terminating outbound call when picked up, sends 'BYE' message

  - by vo

  I'm running Asterisk 1.6.1.10 / FreePBX 2.5.2.2 and I've got an outbound trunk setup. Everything use to work fine until recently (perhaps due to upgrade to FC12 or other things I'm not sure). Anyway the setup does not appear to have issues registering and setting up the call, RTP packets go both ways and you can hear the ringing from the other side. However it appears that when the call is picked up or thereabouts, the incoming RTP packets cease. Upon closer inspection with Wireshark, there are these particular packets that seem to be the cause: trunk->asterisk SIP/SD Status: 200 OK, with session description asterisk->trunk SIP Request: ACK sip:<phone>@trunk:6889 asterisk->trunk SIP Request: BYE sip:<phone>@trunk:6889 [..about a dozzen RTP packets in/outbound..] trunk->asterisk SIP Status: 200 OK, CSeq: 104 Bye [..outbound RTP continues, phone is silent..] Then the inbound RTP packets cease, however the asterisk logs dont show any activity at this point. The last entry reads 'SIP/ is answered SIP/'. Then when you hangup the extension, you get asterisk->trunk SIP Request: BYE sip:<phone>@trunk:6889 trunk->asterisk SIP Status: 481 Call Leg/Transaction does not exist My trunk peer settings in FreePBX are: username=<user> fromuser=<user> canreinvite=no type=friend secret=<pass> qualify=no [qualify yes produces 401/forbidden messages] nat=yes insecure=very host=<sip trunk gateway> fromdomain=<sip trunk gateway> disallow=all context=from-pstn allow=ulaw dtmfmode=inband Under sip_general_custom.conf i have stunaddr=stun.xten.com externrefresh=120 localnet=192.168.1.1/255.255.255.0 nat=yes Whats causing Asterisk to prematurely end the call and still think the call is in progress? I have no idea where to look next.

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• How do I make ESXi 5.0 to shutdown virtual machines when the physical power button is pushed?

  - by Pawel Sawicki

  I have a home NAS/DLNA server built out of an HP Micro Server with the HP branded VMware ESXi 5.0.0 build-623860 (free license) installed. Being a home media center I'd like it to be "manageable" by all my household members. This requires that it needs to be powered on an off (including all the VMs inside) by anybody with the physical access to the server by simply pressing the power button on the chassis. The "startup" part is easy to obtain - all I had to do was to configure the startup/shutdown policy: Once the server powers up, all VMs start as well and that's exactly what I need. Well.. it did work up until 5.0.0U1, but that's a different story: http://blogs.vmware.com/vsphere/2012/03/free-esxi-hypervisor-auto-start-breaks-with-50-update-1.html Unfortunately, pressing the power button doesn't gracefully shutdown the guest machines - they are terminated instead. If I run the "shut down" command from the vSphere Client interface guests are powered off. I'd like to get the same end result when the physical power button is switched. I've poked around a bit on the ESXi server. There's a "/sbin/shutdown.sh" script that seemed to do exactly what I need... but after trying it does exactly what the power off button. The "/etc/inittab" contains an entry for the "shutdown" level but I suppose it's not hooked to the power button. I can't find any acpi related configuration, neither do I know what exactly is executed when the power button is pressed. Does anybody have a clue how can I make the VMs shutdown automatically when the physical power switch is pressed to turn of the computer?

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• What's the lowest cost, legal, Microsoft server stack you can assemble?

  - by McKAMEY

  Assuming that you have an app infrastructure that generally only requires: ASP.NET MVC / C# / .NET Database or NoSQL data store (must be accessible from C#) Here's the challenge to you server gods: What is the least expensive configuration that will allow you to deploy to production in a way that doesn't break any licensing rules? In what ways does this solution differ from the "standard" Microsoft deployment scenario? Where does this solution's performance break down once the app begins to scale? I'm not concerned about the hardware, only the server software itself. I would love to hear about any solutions you've personally put into production. Especially if they are unique alternatives. For ideas, consider some of the possible variations, a) any Microsoft server solutions where they have lowered the barrier to entry to compete with OSS, or b) any OSS alternatives to Microsoft products which perform at a similar level. An example of a): SQL Server 2008 Express Edition SP1 is a 100% free version of SQL Server which will scale to the needs of many smaller / early stage applications. An example of b): running the Mono Framework on Linux. An example of differing from the "standard" stack: running Mono on Linux will require a completely different server OS familiarity. None of the Windows-based knowledge really transfers. An example of breaking down under scale: SQL Server Express will only scale to 1GB of memory and 4GB of disk storage. After that point, the application will need to move to one of the paid versions of SQL Server.

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• Swap static public IPs without creating DNS conflicts?

  - by Jakobud

  Our ISP is Comcast and we have 5 static public IPs from them that we use for various services, including customers connecting to our network, VPN, web, DNS, etc... We need more IP addresses from Comcast. Unfortunately, Comcast is telling us that they can't just simply give us 5 more addresses. They only give static IP addresses in blocks of 1, 5 or 13. In order for us to get more static IPs, they have to take away our current 5 static IPs and give us 13 new ones. How do we make this transition without causing all sorts of DNS chaos? We run public DNS servers, so we can make the DNS changes ourselves, but it will take some time obviously for those DNS changes to propagate throughout the internet. Are there any easy ways to make this transition? Like create some type of fallback DNS entry or something? Surely there must be some sort of procedure for this kind of thing. The Comcast support guy was useless.

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• rsyslog - template - regex data for insertion into db

  - by Mike Purcell

  I've been googling around the last few days looking for a solid example of how to regex a log entry for desired data, which is then to be inserted into a database, but apparently my google-fu is lacking. What I am trying to do is track when an email is sent, and then track the remote mta response, specifically the dsn code. At this point I have two templates setup for each situation: # /etc/rsyslog.conf ... $Template tpl_custom_header, "MPurcell: CUSTOM HEADER Template: %msg%\n" $Template tpl_response_dsn, "MPurcell: RESPONSE DSN Template: %msg%\n" # /etc/rsyslog.d/mail if $programname == 'mail-myapp' then /var/log/mail/myapp.log if ($programname == 'mail-myapp') and ($msg contains 'X-custom_header') then /var/log/mail/test.log;tpl_custom_header if ($programname == 'mail-myapp') and ($msg contains 'dsn=') then /var/log/mail/test.log;tpl_response_dsn & ~ Example log entries: MPurcell: CUSTOM HEADER Template: D921940A1A: prepend: header X-custom_header: 101 from localhost[127.0.0.1]; from=<[email protected]> to=<[email protected]> proto=ESMTP helo=<localhost>: headername: message-id MPurcell: RESPONSE DSN Template: D921940A1A: to=<[email protected]>, relay=gmail-smtp-in.l.google.com[2607:f8b0:400e:c02::1a]:25, delay=2, delays=0.12/0.01/0.82/1.1, dsn=2.0.0, status=sent (250 2.0.0 OK 1372378600 o4si2828280pac.279 - gsmtp) From the CUSTOM HEADER Template I would like to extract: D921940A1A, and X-custom_header value; 101 From the RESPONSE DSN Template I would like to extract: D921940A1A, and "dsn=2.0.0"

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• What do I need to consider when buying hardware to meet my needs?

  - by Darth Android

  I'm looking to build a new computer from the ground up. I'm not sure what to look out for and need guidance and help on how to pick the hardware needed to construct my new rig. How do I know what to buy? How do I find out if a given CPU will be enough for a certain game or application that I want to run? How do I find out if a given graphics card will be enough for a certain game or application? What is important when looking at motherboards? How much memory do I need? How do I know how much wattage I need for a power supply? What size case do I need? What relevant standards do I need to read up on and be aware of? PCI, PCIe, SATA, USB 2.0, USB 3.0, etc... What "gotchas" do I need to be on the lookout for? Please keep responses generation-agnostic to ensure they will be helpful to our future users. While Stack Exchange does not permit shopping recommendations, it doesn't provide any general advice to consider when buying hardware. So, instead of just telling those that ask what to buy that it's not allowed, let's tell them how to figure out what they need. This question was Super User Question of the Week #20 Read the June 20, 2011 blog entry for more details or submit your own Question of the Week.

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