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  • pointer&dynamic memory

    - by gcc
    how many methods are there taking input by using with pointer and dynamic memory input 3 1 2 n k l 2 1 2 p 4 55 62 * # x x is stop character and first input 3 is for another variable int hakko; only hakko use first input the others will be hold in one pointer and input size not determined

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  • dynamic meta data and description for pages

    - by pradeep
    Hi, I am developing pages in php dynamically i.e data gets filled up from mysql DB. how do i assign a proper meta data and description for these dynamic pages so that google recognises it properly. What needs to be passed in page so that google takes description properly. when i search a page in google. it takes the data in page as description not description tag contents

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  • how can i update my dynamic ip with curl php

    - by testkhan
    i have registered a domain and now i want to host it on my own home server ... i want to setup a system with php curl so that i login to my domain website and update my name servers i.e http://mycompany.com/webhosting/domain/manage.php?action=showNS&domain_id=10003489 i want to login to that site and auto update my dynamic ip address...

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  • Swing: easiest way to align width of [dynamic][static][dynamic] components?

    - by java.is.for.desktop
    What is the easiest way in standard Java Swing to align three components in such a way that: the dynamic widths of Component1 and Component3 are adjusted to be equal, while Component2 (which is in between) has constant width? Imagine we have some resizable JPanel (such as inside a JFrame). Small width should look like this: [----------------whole JPanel----------------] [--Component1--] [Component2] [--Component3--] Big width should look like this: [------------------------whole JPanel------------------------] [------Component1------] [Component2] [------Component3------] Note: I just "trialed-and-errored" with GroupLayout for too long.

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  • Dynamic class_name for has_many relations

    - by vooD
    I'm trying to make has_many relation with dynamic class_name attribute class Category < ActiveRecord::Base has_many :ads, :class_name => ( lambda { return self.item_type } ) end or class Category < ActiveRecord::Base has_many :ads, :class_name => self.item_type end But i got errors: can't convert Proc into String or undefined method `item_type' for #<Class:0xb62c6c88> Thank you for any help!

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  • ??AMDU?????MOUNT?DISKGROUP???????

    - by Liu Maclean(???)
    AMDU?ORACLE??ASM??????????,????ASM Metadata Dump Utility(AMDU) AMDU??????????: 1. ?ASM DISK?????????????????2. ?ASM?????????????OS????,Diskgroup??mount??3. ????????,???C?????16????? ?????????AMDU??ASM DISKGROUP??????; ASM???????????????, ?????????????,?????????ASM????? ??DISKGROUP??MOUNT????????????????????????? AMDU???????, ????????ASM DISKGROUP ??MOUNT???????,???RDBMS?????ASM??????? ?? AMDU???11g??????,?????10g?ASM ???? ???????????, ORACLE DATABASE?SPFILE?CONTROLFILE?DATAFILE????ASM DISKGROUP?,?????ASM ORA-600??????MOUNT?DISKGROUP, ???????AMDU??????ASM DISK?????? ?? 1 ??? ??SPFILE?CONTROLFILE?DATAFILE ????: ???????SPFILE ,????SPFILE??PFILE???,?????????????control_files??? SQL> show parameter control_files NAME TYPE VALUE———————————— ———– ——————————control_files string +DATA/prodb/controlfile/current.260.794687955, +FRA/prodb/controlfile/current.256.794687955 ??control_files ?????ASM???????????,+DATA/prodb/controlfile/current.260.794687955 ?? 260????????+DATA ??DISKGROUP??FILE NUMBER ???????ASM DISK?DISCOVERY PATH??,??????ASM?SPFILE??asm_diskstring ???? [oracle@mlab2 oracle.SupportTools]$ unzip amdu_X86-64.zipArchive: amdu_X86-64.zipinflating: libskgxp11.soinflating: amduinflating: libnnz11.soinflating: libclntsh.so.11.1 [oracle@mlab2 oracle.SupportTools]$ export LD_LIBRARY_PATH=./ [oracle@mlab2 oracle.SupportTools]$ ./amdu -diskstring ‘/dev/asm*’ -extract data.260amdu_2009_10_10_20_19_17/AMDU-00204: Disk N0006 is in currently mounted diskgroup DATAAMDU-00201: Disk N0006: ‘/dev/asm-disk10'AMDU-00204: Disk N0003 is in currently mounted diskgroup DATAAMDU-00201: Disk N0003: ‘/dev/asm-disk5'AMDU-00204: Disk N0002 is in currently mounted diskgroup DATAAMDU-00201: Disk N0002: ‘/dev/asm-disk6' [oracle@mlab2 oracle.SupportTools]$ cd amdu_2009_10_10_20_19_17/[oracle@mlab2 amdu_2009_10_10_20_19_17]$ lsDATA_260.f report.txt[oracle@mlab2 amdu_2009_10_10_20_19_17]$ ls -ltotal 9548-rw-r–r– 1 oracle oinstall 9748480 Oct 10 20:19 DATA_260.f-rw-r–r– 1 oracle oinstall 9441 Oct 10 20:19 report.txt ???????DATA_260.f ??????,?????????startup mount RDBMS??: SQL> alter system set control_files=’/opt/oracle.SupportTools/amdu_2009_10_10_20_19_17/DATA_260.f’ scope=spfile; System altered. SQL> startup force mount;ORACLE instance started. Total System Global Area 1870647296 bytesFixed Size 2229424 bytesVariable Size 452987728 bytesDatabase Buffers 1409286144 bytesRedo Buffers 6144000 bytesDatabase mounted. SQL> select name from v$datafile; NAME——————————————————————————–+DATA/prodb/datafile/system.256.794687873+DATA/prodb/datafile/sysaux.257.794687875+DATA/prodb/datafile/undotbs1.258.794687875+DATA/prodb/datafile/users.259.794687875+DATA/prodb/datafile/example.265.794687995+DATA/prodb/datafile/mactbs.267.794688457 6 rows selected. startup mount???,???v$datafile????????,????????DISKGROUP??FILE NUMBER ???./amdu -diskstring ‘/dev/asm*’ -extract ???? ??????????? [oracle@mlab2 oracle.SupportTools]$ ./amdu -diskstring ‘/dev/asm*’ -extract data.256amdu_2009_10_10_20_22_21/AMDU-00204: Disk N0006 is in currently mounted diskgroup DATAAMDU-00201: Disk N0006: ‘/dev/asm-disk10'AMDU-00204: Disk N0003 is in currently mounted diskgroup DATAAMDU-00201: Disk N0003: ‘/dev/asm-disk5'AMDU-00204: Disk N0002 is in currently mounted diskgroup DATAAMDU-00201: Disk N0002: ‘/dev/asm-disk6' [oracle@mlab2 oracle.SupportTools]$ cd amdu_2009_10_10_20_22_21/[oracle@mlab2 amdu_2009_10_10_20_22_21]$ lsDATA_256.f report.txt[oracle@mlab2 amdu_2009_10_10_20_22_21]$ dbv file=DATA_256.f DBVERIFY: Release 11.2.0.3.0 – Production on Sat Oct 10 20:23:12 2009 Copyright (c) 1982, 2011, Oracle and/or its affiliates. All rights reserved. DBVERIFY – Verification starting : FILE = /opt/oracle.SupportTools/amdu_2009_10_10_20_22_21/DATA_256.f DBVERIFY – Verification complete Total Pages Examined : 90880Total Pages Processed (Data) : 59817Total Pages Failing (Data) : 0Total Pages Processed (Index): 12609Total Pages Failing (Index): 0Total Pages Processed (Other): 3637Total Pages Processed (Seg) : 1Total Pages Failing (Seg) : 0Total Pages Empty : 14817Total Pages Marked Corrupt : 0Total Pages Influx : 0Total Pages Encrypted : 0Highest block SCN : 1125305 (0.1125305)

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  • Bad motherboard / controller / HDs?

    - by quidpro
    On a leased server, I am running into some timing issues with an application that requires precise timing. Server is a Dual Xeon E5410 running on a Supermicro X7DVL-3 motherboard under CentOs 5.5 x64. The application I am running is timer sensitive and keeps sensing drift whether under load or at idle, but especially under load. I did some investigating with atop and dd and found some mind-blowing numbers. Mind you, I am no Linux guru but something sure seems out of whack. I ran: dd bs=4096 if=/dev/zero of=/bigtestfile to generate disk activity. Regardless whether I wrote it to sda or sdb my DSK value in atop would go over 100%, at one time peaking at 1700%. Again it does not matter if I am writing to sda or sdb. DSK | sdb | busy 675% | read 0 | write 110 | avio 78 ms | Here are the smartctl outputs: # smartctl -A /dev/sda smartctl version 5.38 [x86_64-redhat-linux-gnu] Copyright (C) 2002-8 Bruce Allen Home page is http://smartmontools.sourceforge.net/ === START OF READ SMART DATA SECTION === SMART Attributes Data Structure revision number: 16 Vendor Specific SMART Attributes with Thresholds: ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE 1 Raw_Read_Error_Rate 0x000b 200 200 051 Pre-fail Always - 0 3 Spin_Up_Time 0x0007 165 165 021 Pre-fail Always - 2750 4 Start_Stop_Count 0x0032 100 100 040 Old_age Always - 21 5 Reallocated_Sector_Ct 0x0033 200 200 140 Pre-fail Always - 0 7 Seek_Error_Rate 0x000a 200 200 051 Old_age Always - 0 9 Power_On_Hours 0x0032 065 065 000 Old_age Always - 25831 10 Spin_Retry_Count 0x0012 100 253 051 Old_age Always - 0 11 Calibration_Retry_Count 0x0012 100 253 051 Old_age Always - 0 12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 21 194 Temperature_Celsius 0x0022 116 093 000 Old_age Always - 27 196 Reallocated_Event_Count 0x0032 200 200 000 Old_age Always - 0 197 Current_Pending_Sector 0x0012 200 200 000 Old_age Always - 0 198 Offline_Uncorrectable 0x0012 200 200 000 Old_age Always - 0 199 UDMA_CRC_Error_Count 0x000a 200 253 000 Old_age Always - 0 200 Multi_Zone_Error_Rate 0x0008 200 200 051 Old_age Offline - 0 # smartctl -A /dev/sdb smartctl version 5.38 [x86_64-redhat-linux-gnu] Copyright (C) 2002-8 Bruce Allen Home page is http://smartmontools.sourceforge.net/ === START OF READ SMART DATA SECTION === SMART Attributes Data Structure revision number: 16 Vendor Specific SMART Attributes with Thresholds: ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE 1 Raw_Read_Error_Rate 0x000f 200 200 051 Pre-fail Always - 0 3 Spin_Up_Time 0x0003 180 180 021 Pre-fail Always - 3958 4 Start_Stop_Count 0x0032 100 100 000 Old_age Always - 22 5 Reallocated_Sector_Ct 0x0033 200 200 140 Pre-fail Always - 0 7 Seek_Error_Rate 0x000f 200 200 051 Pre-fail Always - 0 9 Power_On_Hours 0x0032 068 068 000 Old_age Always - 24087 10 Spin_Retry_Count 0x0013 100 253 051 Pre-fail Always - 0 11 Calibration_Retry_Count 0x0013 100 253 051 Pre-fail Always - 0 12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 21 194 Temperature_Celsius 0x0022 122 096 000 Old_age Always - 25 196 Reallocated_Event_Count 0x0032 200 200 000 Old_age Always - 0 197 Current_Pending_Sector 0x0012 200 200 000 Old_age Always - 0 198 Offline_Uncorrectable 0x0010 200 200 000 Old_age Offline - 0 199 UDMA_CRC_Error_Count 0x003e 200 200 000 Old_age Always - 0 200 Multi_Zone_Error_Rate 0x0009 200 200 051 Pre-fail Offline - 0 Any idea what's wrong here? Bad motherboard? It would seem rare that both drives are going bad (smartctl says they PASS_, so it leaves the mobo as the culprit in my eyes.

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  • Dynamic group membership to work around no nested security group support for Active Directory

    - by Bernie White
    My problem is that I have a number of network administration applications like SAN switches that do not support nested groups from Active Directory Domain Services (AD DS). These legacy administration applications use either LDAP or LDAPS. I am fairly sure I can use Active Directory Lightweight Directory Services (AD LDS) and possibly Windows Authorization Manager to work around this issue; however I am not really sure where to start. I want to end up with: A single group that can be queried over LDAP/LDAPS for all it’s direct members LDAP proxy for user name and password credentials to AD DS Easy way to admin the group, ideally the group would aggregate the nested membership in AD DS. a native solution using freely available components from the Windows stack. If you have any suggestions or solutions that you have previously used to solve this issue please let me know.

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  • Dynamic DNS registration for VPN clients

    - by Eric Falsken
    I've got a VPN server set up in my Active Directory on a remote network. (VPN Server is separate box from DNS/AD) When I dial into the network (client machine is not a member of the AD) the machine does not register its IP or Hostname in the DNS. I've played with all possible combinations of DHCP and RRAS-allocated IP pools, and none of them seem to cause my client to register. Is it because my client has to be a member of the domain? Are there some security settins I can tweak so that it can register its hostname/ip? I've looked in the event logs (System and Security) for the AD, DNS, DHCP, RRAS, and the client machine, and don't see anything relating to DNS Registration. Here's the IPConfig on the client machine (once connected): PPP adapter My VPN Name: Connection-specific DNS Suffix . : mydomain.local Description . . . . . . . . . . . : My VPN Name Physical Address. . . . . . . . . : DHCP Enabled. . . . . . . . . . . : No Autoconfiguration Enabled . . . . : Yes IPv4 Address. . . . . . . . . . . : 192.168.1.22(Preferred) Subnet Mask . . . . . . . . . . . : 255.255.255.255 Default Gateway . . . . . . . . . : DNS Servers . . . . . . . . . . . : 192.168.1.52 <- DC1 192.168.1.53 <- DC2 NetBIOS over Tcpip. . . . . . . . : Enabled Edit: It looks like my clients are not recieving the DHCP Scoope Options. I found this great article in Microsoft's KB. So the problem here is that the VPN Server "pre-reserves" the DHCP addresses, but then you have to add the DHCP Relay Agent to relay the secondary request for scope options. My problem is that the DHCP Relay Agent isn't relaying to the local DHCP server (same box as the VPN/RRAS). I've configured the DHCP Relay Agent according to this KB, but it dosn't work for a local DHCP server. (I see the request count increasing, but no responses) I was able to get everything working by specifying the DNS server and domain name in the VPN connection properties on the client. But am still unable to assign it (or the default gateway) dynamically via DHCP. The client also has to be a member of the remote domain.

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  • Printing a dynamic sheet as one document

    - by Sux2Lose
    I have a spreadsheet structured as follows: Summary section at the top Detail section on the bottom Summary section summarizes the detail section which is filtered using auto filters There are ten products that all need to be printed individually, but I want the page footer to show the overall page position of all the print jobs and the total number of pages. That is probably not clear. So for example, if I print the two page Product A view it will print page 1 of 2 and 2 of 2. If I print the one page Product B it will show page 1 of 1. What I want is to print both and have Product A show Page 1 of 3, Page 2 of 3, and Product B be Page 3 of 3. Is there any way to accomplish this?

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  • Issues with Server 2012 using DFSR running on Hyper-V 2012

    - by Bryan
    We have a number of Server 2012 systems, all of which run virtualised on Hyper-V 2012 server. We are having problems with two such virtual instances, both of which are used as file servers, whereby they occasionally stop responding to requests to serve files to clients. After logging on to the server, attempts to shut it down gracefully fail (no error, it just fails to acknowledge a shutdown request). Recovery is a case of power cycling the server(s) from the Hyper-V console. These two servers don't server a large number of users (one serves no more than 6 users, and the other serves around 20 users), they are in the same domain, but on different physical hardware (and at different sites). They don't lock up at the same time. They both use DFSR to replicate a fairly large amount of data between themselves (200GB) over ADSL connections, this is working fine, and we have been using DFSR to do this on the previous two generations of server OS we have used (Server 2008 R2 and Server 2003 - both of which were physical installs however). Today, when one of the servers crashed, I noticed an entry in the event log, which looked similar to the following: Log Name: Application Source: ESENT Date: 27/11/2012 10:25:55 Event ID: 533 Task Category: General Level: Warning Keywords: Classic User: N/A Computer: HAL-FS-01.example.com Description: DFSRs (1500) \\.\E:\System Volume Information\DFSR\database_C8CC_101_CC00_EC0E\ dfsr.db: A request to write to the file "\\.\E:\System Volume Information\ DFSR\database_C8CC_101_CC00_EC0E\fsr.log" at offset 4423680 (0x0000000000438000) for 4096 (0x00001000) bytes has not completed for 36 second(s). This problem is likely due to faulty hardware. Please contact your hardware vendor for further assistance diagnosing the problem. When the server started up again, I went to find the event log entry to investigate further and found that the event log entry was no longer there (I assume it was in memory but failed to write to disk before the server was powered off, for the reason mentioned in the message). I found the above message by searching back further in the event log. Both of these virtual servers have their E: volumes fully allocated as opposed to dynamically expanding, and there are no other issues on any of the other virtual servers (which include server 2012, server 2008 R2 and Ubuntu 12.04 x64). There are no signs of IO, memory or CPU starvation on the host systems. I've used performance counters on the affected virtual servers to monitor memory usage (including non paged pool usage), as well as CPU and network utilisation, and none of these show any signs of trouble when the issue arises. I would have thought our configuration isn't that uncommon, so I'm wondering if anyone else has seen this, and managed to resolve the problem?

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  • Dynamic nginx domain root path based on hostname?

    - by Xeoncross
    I am trying to setup my development nginx/PHP server with a basic master/catch-all vhost config so that I can created unlimited ___.framework.loc domains as needed. server { listen 80; index index.html index.htm index.php; # Test 1 server_name ~^(.+)\.frameworks\.loc$; set $file_path $1; root /var/www/frameworks/$file_path/public; include /etc/nginx/php.conf; } However, nginx responds with a 404 error for this setup. I know nginx and PHP are working and have permission because the localhost config I'm using works fine. server { listen 80 default; server_name localhost; root /var/www/localhost; index index.html index.htm index.php; include /etc/nginx/php.conf; } What should I be checking to find the problem? Here is a copy of that php.conf they are both loading. location / { try_files $uri $uri/ /index.php$is_args$args; } location ~ \.php$ { try_files $uri =404; include fastcgi_params; fastcgi_index index.php; # Keep these parameters for compatibility with old PHP scripts using them. fastcgi_param PATH_INFO $fastcgi_path_info; fastcgi_param PATH_TRANSLATED $document_root$fastcgi_path_info; fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name; # Some default config fastcgi_connect_timeout 20; fastcgi_send_timeout 180; fastcgi_read_timeout 180; fastcgi_buffer_size 128k; fastcgi_buffers 4 256k; fastcgi_busy_buffers_size 256k; fastcgi_temp_file_write_size 256k; fastcgi_intercept_errors on; fastcgi_ignore_client_abort off; fastcgi_pass 127.0.0.1:9000; }

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  • Round robin DNS for dynamic website

    - by Uwe
    We want to setup multiple servers hosting the same site. Each server (iis6 or iis7) is on its own. Meaning it does not sjare any information with the others. They are not even in the same country. The problem we encounter is that if we setup a round-robin DNS (multiple IDs under one Domainname) is that the client (browser) switches the servers so that the asp.net session gets lost. The question is how do we set this up, so the clients are randomly send to one of the servers and if one fails the users go to the next one. But if a user is using one of the it should stay there. Thank you!

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  • How do you create a dynamic excel chart?

    - by Haris
    I am looking at creating an Excel chart that offers some interactivity. Basically, at the moment I have a chart that is detailing progress (in %) using bars. But that progress is usually made up of several other aspects. So you could have an overall progress of say 50% which would then be broken down into Graphics 75%, Sound 25%, Gameplay 50%. Now what I'd like to do is find a way to stack those bars, so that I have the bar showing the overall progress and only when I click on that bar the other, more detailed progress bars appear. Is there a way to do this in Excel? Thanks in advance!

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  • Postfix dynamic smtp_helo_name

    - by William
    I have a mail server that relays e-mails for two different domains. I want the smtp_helo_name to be different based on the domain. I'm assuming there is no way to do this via checking the mail headers, so I was wondering if there was a way to do it by sending mail for one domain to one IP, and mail for the other to another. I tried modified master.cf to do this: localhost:smtp inet n - n - - smtpd ip1:smtp inet n - n - - smtpd ip2:smtp inet n - n - - smtpd -o myhostnamee=example2.com And setting smtp_helo_name to $myhostname in main.cf I also tried doing -o smtp_helo_name instead, neither work. Any suggestions would be great. Thanks

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  • dynamic subdomains problem?

    - by Solomon Saleh
    im trying to add a wildcard subdomain system to my webserver, but its still not working, this is the steps i took: i made a new file vhost.conf in the directory var/www/vhosts/www.kornar.com/conf/vhost.conf and i put ServerAlias *.domain.com then second of all i made a new dns wildcard on plesk CNAME *.domain.com kornar.com and then i edited my .htaccess file Options +FollowSymLinks RewriteEngine on RewriteCond %{HTTP_HOST} ^(^.*)\.kornar.com RewriteRule (.*) user.php?user=%1 normally my url would be http://www.kornar.com/user.php?user=solomon but now i want to like this http://solomon.kornar.com but the steps i took still deosnt work :)) whats happening here

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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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  • Reverse Proxy Methods for Hosting a Low-Bandwidth Dynamic Website

    - by Casey
    I am building a webcam w/ HTTP server that will be running from a low-bandwith connection. The content on the site will be changing every 5 to 10 minutes. Instead of serving files directly from this connection, are there hosting companies that can act as a reverse proxy for my site? Therefore, if nobody is using the site, the local internet connection remains idle. And if I receive 1000 hits all at the same time, only one HTTP GET is required, and the hosting company (on a fat pipe) continues serving the other 999 requests? This doesn't sound like a very common usage model, but I feel like this would be the optimal solution to my situation.

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  • Dynamic IP on NGINX geo module without restart

    - by joaorvmaia
    I want create a task on my Capistrano deploy to put my public IP on geo module configuration of my NGINX server without restart NGINX, is it possible? Example, my /etc/nginx/nginx.conf: geo $geo { default no; include /home/deploy_user/appname/shared/ip_list; } The file /home/deploy_user/appname/shared/ip_list I will provide during deploy. I need this because my public IP can change many times. Regards, João

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  • nginx dynamic servername with regular expression doesn't work for co.uk

    - by redn0x
    I'm trying to setup a nginx server which dynamically loads content from a folder for a domain. To do this I'm using regular expressions in the server name like so: server_name ((?<subdomain>.+)\.)?(?<domain>.+)\.(?<tld>.*); This will create a 3 variables for nginx to use later on, for example when using the following url: test.foo.example.com this will evaluate to: $subdomain = test.foo $domain = example $tld = com The problem arises when the co.uk top-level domain is used. In this case when using the url test.foo.example.co.ukit will evaluate to: $subdomain = test.foo.cedira $domain = co $tld = uk How can I edit the regular expression so that it will also work for co.uk?

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  • Converting an EC2 AMI to vmdk image

    - by Reed G. Law
    I've come quite close to getting Amazon Linux to boot inside VirtualBox, thanks to this answer and these websites. A quick overview of the steps I've taken: Launch EC2 instance with Amazon Linux 2011.09 64-bit AMI dd the contents of the EBS volume over ssh to a local image file. Mount the image file as a loopback device and then to a local mount point. Create a new empty disk image file, partition with an offset for a bootloader, and create an ext4 filesystem. Mount the new image's partition and copy everything from the EC2 image. Install grub (using Ubuntu's grub-legacy-ec2 package, not grub2). Convert the image file to vmdk using qemu-img. Create a new VirtualBox VM with the vmdk. Now the VM boots, grub loads, and the kernel is found. But it fails when it tries to mount the root device: dracut Warning: No root device "block:/dev/xvda1" found dracut Warning: Boot has failed. To debug this issue add "rdshell" to the kernel command line. dracut Warning: Signal caught! dracut Warning: Boot has failed. To debug this issue add "rdshell" to the kernel command line. Kernel panic - not syncing: Attempted to kill init! Pid: 1, comm: init Not tainted 2.6.35.14-107.1.39.amzn1.x86_64 #1 I have tried changing /boot/grub/menu.lst to find the root device by label and UUID, but nothing works. I'm guessing the xen kernel is not compatible with VirtualBox. The reasoning behind all this effort is to make a Vagrant box that is as close to possible as the production enviroment, so deploys can be tested locally. I know it's cheap to do test runs on EC2, but poor connectivity often ruins the experience. Plus it would be really nice to have a virtual machine with the production environment so that co-workers don't have to install everything under the sun just to get up and running with app development. If I were to try running a different kernel, what kernel could I get to be as close as possible to Amazon Linux 2011.09?

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  • Dynamic subdomain routing

    - by Nader
    Hi everyone, I asked this question over at stackoverflow, but got very few views: http://stackoverflow.com/questions/2284917/route-web-requests-to-different-servers-based-on-subdomain Perhaps it's more applicable to this crowd. Here it is again for convenience: I have a platform where a user can create a new website using a subdomain. There will be thousands of these, eg abc.mydomain.com, def.mydomain.com . Hopefully if we are successful hundreds of thousands. I need to be able to route these domains to a different IPs to point at a particular app server. I have this mapping in a database right now. What are the best practices and recommended technologies here? I see a couple options: Have DNS setup with a wildcard CNAME entry so that all requests go to a single IP where perhaps two machines using heartbeat (for failover) know how to look up the IP in the database and then do an http redirect to the appropriate app server. This seems clunky and slow to me. Run my own DNS server that can be programatically managed such that when a new site is created a DNS entry is added. We also move sites around to different app servers, so I would need to be able to update DNS entries in close to real time. Thoughts anyone? Thanks. Update2: I've setup external wildcard DNS pointing at an HAProxy web server whose job it is to route requests to backend servers. The mapping is stored in our internal PowerDNS server. Question now is how to get the HAProxy server (or another) to use the value of the internal DNS and not some config file or access list? – Update: Based on some suggestions below, it seems like reverse-proxy server(s) is the way to go. As I'll be rebalancing the domain-server mapping, these need to work instantly and the TTL on a DNS solution could be a problem. Any recommendations on software to use considering this domain-IP data is stored in a DB, and I'll need this to be performant?

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