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• Hard Disk Not Counting Reallocated Sectors

  - by MetaNova

  I have a drive that is reporting that the current pending sectors is "45". I have used badblocks to identify the sectors and I have been trying to write zeros to them with dd. From what I understand, when I attempt writing data directly to the bad sectors, it should trigger a reallocation, reducing current pending sectors by one and increasing the reallocated sector count. However, on this disk both Reallocated_Sector_Ct and Reallocated_Event_Count raw values are 0, and dd fails with I/O errors when I attempt to write zeros to the bad sectors. dd works fine, however, when I write to a good sector. # dd if=/dev/zero of=/dev/sdb bs=512 count=1 seek=217152 dd: error writing ‘/dev/sdb’: Input/output error Does this mean that my drive, in some way, has no spare sectors to be used for reallocation? Is my drive just in general a terrible person? (The drive isn't actually mine, I'm helping a friend out. They might have just gotten a cheap drive or something.) In case it is relevant, here is the output of smartctl -i : Model Family: Western Digital Caviar Green (AF) Device Model: WDC WD15EARS-00Z5B1 Serial Number: WD-WMAVU3027748 LU WWN Device Id: 5 0014ee 25998d213 Firmware Version: 80.00A80 User Capacity: 1,500,301,910,016 bytes [1.50 TB] Sector Size: 512 bytes logical/physical Device is: In smartctl database [for details use: -P show] ATA Version is: ATA8-ACS (minor revision not indicated) SATA Version is: SATA 2.6, 3.0 Gb/s Local Time is: Fri Oct 18 17:47:29 2013 CDT SMART support is: Available - device has SMART capability. SMART support is: Enabled UPDATE: I have run shred on the disk, which has caused Current_Pending_Sector to go to zero. However, Reallocated_Sector_Ct and Reallocated_Event_Count are still zero, and dd is now able to write data to the sectors it was previously unable to. This leads me with several other questions: Why aren't the reallocations being recored by the disk? I'm assuming the reallocation took place as I can now write data directly to the sector and couldn't before. Why did shred cause reallocation and not dd? Does the fact that shred writes random data instead of just zeros make a difference?

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• Dropped WD External Harddisk, now it's shown as "Not initialized"

  - by Phelios

  So, the WD my passport external harddisk is dropped, and after that, the computer is unable to read it anymore. I was hopping if I can just find another case to try if the harddisk is still readable, but looks like the hard drive itself is not a normal SATA or PATA drive. I think it's modified. So, I can't find another case that I can try on. In the computer, I still can see the drive in the "Disk Management", but it's shown as Uninitialized, no size, and no drive letter. I've also tried a couple of recovery tools. Some can't detect at all, there is one (find and mount software) that can detect but shows 0 size. None of them can recover the data. WD is willing to replace it with a new one, but I still need to recover the data. Any way I can recover the data? UPDATE: I tried initialized it from the windows Disk Manager, but it give error "The request could not be performed because of an I/O device error."

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• Zpool disk failure - Where am I at?

  - by JT.WK

  After checking the status of one of my zpools today, I was faced with the following: root@server: zpool status -v myPool pool: myPool state: ONLINE status: One or more devices has experienced an unrecoverable error. An attempt was made to correct the error. Applications are unaffected. action: Determine if the device needs to be replaced, and clear the errors using 'zpool clear' or replace the device with 'zpool replace'. see: http://www.sun.com/msg/ZFS-8000-9P scrub: resilver completed after 3h6m with 0 errors on Tue Sep 28 11:15:11 2010 config: NAME STATE READ WRITE CKSUM myPool ONLINE 0 0 0 raidz1 ONLINE 0 0 0 c6t7d0 ONLINE 0 0 0 c6t8d0 ONLINE 0 0 0 spare ONLINE 0 0 0 c6t9d0 ONLINE 54 0 0 c6t36d0 ONLINE 0 0 0 c6t10d0 ONLINE 0 0 0 c6t11d0 ONLINE 0 0 0 c6t12d0 ONLINE 0 0 0 spares c6t36d0 INUSE currently in use c6t37d0 AVAIL c6t38d0 AVAIL errors: No known data errors From what I can see, c6t9d0 has encountered 54 write errors. It seems as though it has automatically resilvered with the spare disk c6t36d0, which is now currently in use. My question is, where exactly am I at? Yes the 'action' tells me to determine whether or not the disk needs replacing, but is this disk currently still in use? Can I replace / remove it? Any explanation would be much appreciated as I'm quite new to this stuff :) update: After following the advice from C10k Consulting, ie detaching: zpool detach myPool c6t9d0 and adding as a spare: zpool add myPool spare c6t9d0 It appears as though all is well. The new status of my zpool is: root@server: zpool status -v myPool pool: myPool state: ONLINE scrub: resilver completed after 3h6m with 0 errors on Tue Sep 28 11:15:11 2010 config: NAME STATE READ WRITE CKSUM muPool ONLINE 0 0 0 raidz1 ONLINE 0 0 0 c6t7d0 ONLINE 0 0 0 c6t8d0 ONLINE 0 0 0 c6t36d0 ONLINE 0 0 0 c6t10d0 ONLINE 0 0 0 c6t11d0 ONLINE 0 0 0 c6t12d0 ONLINE 0 0 0 spares c6t37d0 AVAIL c6t38d0 AVAIL c6t9d0 AVAIL errors: No known data errors Thanks for your help c10k consulting :)

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• Xampp can't start apachem windows xp

  - by jribeiro

  I formatted my computer a week ago. Installed wampp on windows xp, git and everything I needed. When I run git for the first time it told me it had a problem with my user folder (because of the accents) so I created a new user and migrated everything to the new one. After this wampp wouldn't start anymore. I uninstalled it and installed xampp which is what I'm using now. My problem is that even though I requesed xampp to install Apache as a service it isn't installed. It doesn't show in windows services screen. Xampp control panel shows mysql service running ok. When I click to install apache as a service it returns no error. When I click start apache no error is outputed. No file and no errors under c:/xampp/apache/log/ If I restart computer it says that apache service is not installed. I tried to reinstall wampp and the same problem occurs. If I run netstat -a -no nothing is running on port 80! What can I do??

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• Nginx proxy to IIS Connection Timeout

  - by MitMaro

  I am having an issue with random timeouts with a Nginx proxy connecting to an IIS machine. I have been watching a packet capture between the two servers and it seems that the IIS machine is receiving a SYN packet but is not responding with what I think should be an ACK response. Before the timeout occurs there seems to be a slower response from the IIS server. There is no unusual memory or processor usage on the IIS or Nginx machine. Some information on the servers and setup: Nginx Machine: Ubuntu 10.04 64bit Nginx 0.7.65 Amazon EC2 Windows Machine: Windows Server 2008 IIS 7 ASP.net Application in Integrated Mode Nginx Error: 2011/01/10 17:57:40 [error] 8297#0: *30 connect() failed (110: Connection timed out) while connecting to upstream, client: 209.***.***.***, server: secure.example.com, request: "GET /a/path/deliver.aspx HTTP/1.1", upstream: "http://***.***.***.****:****//another/path/deliver.aspx", host: "secure.example.com" WireShark Packets 6521.449528 10.***.***.*** -> 174.***.***.*** TCP 38695 > us-cli [SYN] Seq=0 Win=5840 Len=0 MSS=1460 TSV=477422103 TSER=0 WS=7 6524.443239 10.***.***.*** -> 174.***.***.*** TCP 38695 > us-cli [SYN] Seq=0 Win=5840 Len=0 MSS=1460 TSV=477422403 TSER=0 WS=7 6530.443241 10.***.***.*** -> 174.***.***.*** TCP 38695 > us-cli [SYN] Seq=0 Win=5840 Len=0 MSS=1460 TSV=477423003 TSER=0 WS=7

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• Deploying ASP.NET MVC to Windows Server 2003

  - by pete the pagan-gerbil

  Hi, I have a problem with an MVC 2 website on Windows Server 2003 running IIS 6. It is externally hosted, but we have a 2003 server internally for testing. The internal server runs the website fine, the external server gives a 403 ("website declined to show this page") error when navigating to the root of the site, and a 404 if I try to navigate directly to a page resource. I have tried the wildcard ISAPI mapping and extension mapping, and a couple of other common checks (I forget exactly which now, most of them were already set correctly), but so far no joy. All the settings can be replicated on our internal server and the pages return properly. IIS logs just show exactly what the browser shows - 404 errors and 403s. I've read about a different level of trust required for an MVC application compared to a WebForms application - how can I check permissions and trust levels on the external and internal servers (assuming I am able to check that) and if that would cause these errors, what are the minimum levels that MVC require? Failing that, what else might be causing this error for me to try out?

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• Website hosting from home - IIS6

  - by Paul

  I'm wanting to host a few websites from home, primarily because I'm using some BETA Microsoft software (.NET 4 and EF) and don't want to install it on my production server which is hosted at eukhost.com. Basically, I'm completely new to this sort of thing. So far, here is what I've done: Registered the domain name at namecheap.com (let's call it mydomain.com) Gone to "Nameserver Registration" in the panel and entered my IP address for the NS1 and NS2 records (let's say the IP is 0.0.0.0). Gone to "Domain Name Server Setup" and entered ns1.mydomain.com & ns2.mydomain.com Forwarded requests from port 80 to my internal IP (let's say 192.168.1.254) Created the website in IIS (I'm just testing with a single website so far, so have not created any host header values) Now, if I type in the IP address (http://0.0.0.0) I get the site as expected. However, if I enter http://www.mydomain.com I get an error saying "DNS Error - Cannot find server". I'm aware that there is a service from DynDNS that will automatically change the IP if I have a dynamic address, however my IP has remained static since I installed the ISP (since October) so I don't need this. Is there any way that I can get the DNS to work just by configuring IIS or something in Windows? I don't really want to have to pay for any 3rd party service. Thanks,

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• Strange RDP / Remote Desktop problem

  - by John Landheer

  I'll try to be as specific as I can be: Server is running SBS 2008 R2 (with all updates) Server is connected to the internet Server has 2 NIC's, one is disabled Server is running RDP Service (accessible directly from the internet, I know, not as secure as it should be) Computers A and B are on the same local net. Computers A and B are both Windows 7. Users X and Y are both admins on the server Computer A can connect as user X to the server with mstsc Computer A can connect as user Y to the server with mstsc Computer B can connect as user X to the server with mstsc Computer B CANNOT connect as user Y to the server with mstsc! Error that username/password is incorrect. The last point is the problem, I get an authentication error. This used to work flawlessly for the last year. The server and desktops have been rebooted. EDIT: I tried: prefixing domain to the username prefixing the server computer name to the username change the password copy/paste the password from notepad to make sure it was correct I find it very strange.... EDIT: The computers are not on the same subnet as the server. The server is at my hosting provider. All computers as all users can reach the web app that is running on the server.

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• Trouble with nginx and serving from multiple directories under the same domain

  - by Phase

  I have nginx setup to serve from /usr/share/nginx/html, and it does this fine. I also want to add it to serve from /home/user/public_html/map on the same domain. So: my.domain.com would get you the files in /usr/share/nginx/html my.domain.com/map would get you the files in /home/user/public_html/map With the below configuration (/etc/nginx/nginx.conf) it appears to be going to my.domain.com/map/map as noticed by this: 2011/03/12 09:50:26 [error] 2626#0: *254 "/home/user/public_html/map/map/index.html" is forbidden (13: Permission denied), client: <edited ip address>, server: _, request: "GET /map/ HTTP/1.1", host: "<edited>" I've tried a few things but I'm still not able to get it to cooperate, so any help would be greatly appreciated. ####################################################################### # # This is the main Nginx configuration file. # ####################################################################### #---------------------------------------------------------------------- # Main Module - directives that cover basic functionality #---------------------------------------------------------------------- user nginx; worker_processes 1; error_log /var/log/nginx/error.log; pid /var/run/nginx.pid; #---------------------------------------------------------------------- # Events Module #---------------------------------------------------------------------- events { worker_connections 1024; } #---------------------------------------------------------------------- # HTTP Core Module #---------------------------------------------------------------------- http { include /etc/nginx/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"'; access_log /var/log/nginx/access.log main; sendfile on; keepalive_timeout 65; server { listen 80; server_name _; #access_log logs/host.access.log main; location / { root /usr/share/nginx/html; index index.html index.htm; } location /map { root /home/user/public_html/map; index index.html index.htm; } error_page 404 /404.html; location = /404.html { root /usr/share/nginx/html; } error_page 500 502 503 504 /50x.html; location = /50x.html { root /usr/share/nginx/html; } } include /etc/nginx/conf.d/*.conf; }

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• Apache proxy: Why is one vhost returning Forbidden while the other one works?

  - by Stefan Majewsky

  I have a Java application that needs to talk to another intranet website using HTTPS in both directions. After fighting with Java's SSL implementations for some time, I gave up on that, and have now set up an Apache that's supposed to act as a bidirectional reverse proxy: external app ---(HTTPS request)---> Apache ---(local HTTP request)---> Java app This direction works just fine, however the other direction does not: Java app ---(local HTTP request)---> Apache ---(HTTPS request)---> external app This is the configuration for the vhost implementing the second proxy: Listen 127.0.0.1:8081 <VirtualHost appgateway:8081> ServerName appgateway.local SSLProxyEngine on ProxyPass / https://externalapp.corp:443/ ProxyPassReverse / https://externalapp.corp:443/ ProxyRequests Off AllowEncodedSlashes On # we do not need to apply any more restrictions here, because we listened on # local connections only in the first place (see the Listen directive above) <Proxy https://externalapp.corp:443/*> Order deny,allow Allow from all </Proxy> </VirtualHost> A curl http://127.0.0.1:8081/ should serve the equivalent of https://externalapp.corp, but instead results in 403 Forbidden, with the following message in the Apache error log: [Wed Jun 04 08:57:19 2014] [error] [client 127.0.0.1] Directory index forbidden by Options directive: /srv/www/htdocs/ This message completely puzzles me: Yes, I have not set up any permissions on the DocumentRoot of this vhost, but everything works fine for the other proxy direction where I haven't. For reference, here's the other vhost: Listen this_vm_hostname:443 <VirtualHost javaapp:443> ServerName javaapp.corp SSLEngine on SSLProxyEngine on # not shown: SSLCipherSuite, SSLCertificateFile, SSLCertificateKeyFile SSLOptions +StdEnvVars ProxyPass / http://localhost:8080/ ProxyPassReverse / http://localhost:8080/ ProxyRequests Off AllowEncodedSlashes On # Local reverse proxy authorization override <Proxy http://localhost:8080/*> Order deny,allow Allow from all </Proxy> </VirtualHost>

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• Windows 7 & Photoshop CS5.1 - "Fonts missing" issue - I have the font!! (sort of)

  - by Tigue Von Bond

  I've noticed a really aggravating issue with Adobe Photoshop CS5.1 on at least two occasions. I downloaded a layered PSD file to work with, in the release notes it directed me to a download page for all of the font used, which was Futura Medium Condensed. I chcked and did not have any Futura fonts at all. So I downloaded and installed the font from the source provided by the provider of the PSD. I closed and reopened Photoshop and when I open the PSD file I get an error saying: Some text layers contain fonts that are missing. These layers will need to have the missing fonts replaced before they can be used for vector based output. I then go to edit the text layer and receive: The following fonts are missing for text layer "discount" Future CondensedExtraBold Font substitution will occur. Continue? If I click OK, it substitutes Myriad Pro for this layer. Didn't I download the right font? I go into the font dropdown and see I have a font with a slightly different name "Futura-CondensedExtraBold-Th Regular" I have also seen this issue with Helvetica. I have received a PSD file, same "some text layers contain fonts that are missing These..." error dialog when I open up the file - and when I go to edit a layer with text I get: The following fonts are missing for text layer "Home": Helvetica Font substitution will occur. Continue? I click continue - it substitutes Myriad Pro - and check my font list and sure enough I have a bunch of Helvetica fonts, none exactly named "Helvetica" Is this a common issue? Googling it yielded a few people with similar problems (I think all on Macs) but either no concrete help or no response. Is it that the two font names aren't EXACT matches? If that is the case is there any way of setting up Photoshop to more intelligently substitute or even set up some sort of mapping (if "Helvetica" then substitute "Helvetica Lt Std" ? Is there anything else, maybe something that I am not thinking of?

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• Client unable to access OWA website after temporarily changing SSL certificate on the server

  - by Lorenz Meyer

  I have the following issue: One client computer (Windows XP) cannot access the OWA website. All other client computers can (Except another one in the same remote office). How this happened: I temporarily changed the SSL certificate on the Exchange Server yesterday. After a few minutes, I reverted back, an now the same certificate that was installed for years is back again. During these few minutes, they were in OWA on this computer and got a certificate error. What exactly happens: Internet Explorer displays the error Internet Explorer cannot display the webpage, Firefox displays The connection was reset and Crome shows This webpage is not available. The connection to ... was interrupted. What I already did to try to get this working: Restart the client computer Restart the exchange server Deleted Internet Explorer browsing history In IE, Internet Options, tab Content, under Certificates deletes SSL cache Restored Internet Explorer to the default parameters I looked into certmgr.msc, but did not find a certificate related to the issue What could I do else to narrow down the origin of this problem (or better: resolve it) ? Can you give any advice ?

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• Cannot Start Passenger 3.0.18 Using Mountain Lion (OS X Server) and RVM

  - by LightBe Corp

  I recently did a clean install of Mountain Lion on my Mac Mini Server. I installed version 3.0.18 using a gem according to the directions on http://www.phusionpassenger.com with no errors that I could see. rvmsudo gem install passenger-enterprise-server-3.0.18.gem rvmsudo passenger-install-apache2-module Here are my entries in /etc/apache2/httpd.conf with my username masked: LoadModule passenger_module /Users/username/.rvm/gems/ruby-1.9.3-p327/gems/passenger-enterprise-server-3.0.18/ext/apache2/mod_passenger.so PassengerRoot /Users/username/.rvm/gems/ruby-1.9.3-p327/gems/passenger-enterprise-server-3.0.18 PassengerRuby /Users/username/.rvm/wrappers/ruby-1.9.3-p327/ruby I uncommented out the following statement: Include /private/etc/apache2/extra/httpd-vhosts.conf Here is a sample virtual host entry. I have three of them in the file. <VirtualHost *:80> ServerName www.mydomain.com ServerAlias mydomain.com PassengerAppRoot /Users/username/Sites/myfolder/ DocumentRoot /Users/username/Sites/myfolder/public <Directory /Users/username/Sites/myfolder/public> Allow from all AllowOverride all Options -MultiViews </Directory> </VirtualHost> I have restarted Apache several times. Here is information from my server: [~]$ ps -ef | grep Passenger 501 18804 303 0 12:39PM ttys000 0:00.00 grep Passenger [~]$ rvmsudo passenger-status Password: **ERROR: Phusion Passenger doesn't seem to be running.** [~]$ rvmsudo passenger-config --version 3.0.18 I have tried doing online searches on this. I was surprised that there was not all that much on this specific error even though from my understanding Passenger has been around for a few years. I have posted this issue on the Phusion Passenger Google Groups but have not heard anything. Any help would be appreciated, the sooner the better LOL. Seriously I need to have one of my three websites up by tomorrow evening. This is the only issue stopping that from happening. Thanks again.

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• Nginx wont send POST to fastcgi backend, but GET works fine?

  - by xyld

  Not sure why, but it is happy sending a GET to the fastcgi backend (Mercurial hgwebdir in this case), but simply resorts to the filesystem if the request is a POST. Relevant parts of nginx.conf: location / { root /var/www/htdocs/; index index.html; autoindex on; } location /hg { fastcgi_pass unix:/var/run/hg-fastcgi.socket; include fastcgi_params; if ($request_uri ~ ^/hg([^?#]*)) { set $rewritten_uri $1; } limit_except GET { allow all; deny all; auth_basic "hg secured repos"; auth_basic_user_file /var/trac.htpasswd; } fastcgi_param SCRIPT_NAME "/hg"; fastcgi_param PATH_INFO $rewritten_uri; # for authentication fastcgi_param AUTH_USER $remote_user; fastcgi_param REMOTE_USER $remote_user; #fastcgi_pass_header Authorization; #fastcgi_intercept_errors on; } GET's work fine, but POST delivers this error to the error_log: 2010/05/17 14:12:27 [error] 18736#0: *1601 open() "/usr/html/hg/test" failed (2: No such file or directory), client: XX.XX.XX.XX, server: domain.com, request: "POST /hg/test HTTP/1.1", host: "domain.com" What could possibly be the issue? I'm trying to allow read-only access via GET's to the page, but require authorization when using hg push to the same url which sends a POST request.

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• CUPS printer on Vritual Machine can be access via CUPS admin, but not by XP?

  - by SJaguar13

  I have a Zebra label printer connected to a Linux Mint virtual machine. It was set up with CUPS and a Windows XP computer can then print to it via http://192.168.1.76:632/printers/labelprinter. That was all fine and dandy I then hooked up a Fargo Pro L PVC card printer to a Windows XP virtual machine. I had to disconnect the label printer as the server that hosted both virtual machines only has 1 parallel port. Now I plugged in the Zebra again, and it cannot print from the Windows XP computer anymore. If I go to the CUPS admin panel on the Windows XP computer, I can see it, everything looks fine, and I can send it a test page to print which works. If I try to print from Windows, I get an error that the printer is not found/cannot connect to the server. The only other thing that changed was the firewall on the router to allow remote desktop to another computer from outside the network, but all the firewall stuff was for external use. Nothing affected the IP address of the internal network. The Linux Mint VM also had a PDF pritner that was shared with CUPS. That printer is also down. I tried setting up a new CUPS installation on another VM, and when I go to share it with XP, I get the same error. I don't know what to try. It has access, it can get to the admin from that computer, it seems to be up and ready, but when Windows tries to connect, the printer isn't found even though 4 days ago everything was fine. Any ideas?

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• postfix not sending domain mail to mx

  - by orlandoresorts

  I'm trying to get postfix to forward email to my domain which is hosted by gmail. As I don't have any users on my server nor do I want to. Here's how I have things set up.. LEt's say you and I have a domain called mcdonalds.com the registrar has mcdonalds.com MX records pointing to gmail. (everything works for like a year) Now we set up a server to host a website. Then we create a mail account called [email protected] and send mail locally from the server using roundcube. This works. We can send mail to cnn.com we can send mail to serverfault.com we can email any/everyone. BUT we cannot send mail to our own domain mcdonalds.com So I cannot email [email protected] I cannot email [email protected] I cannot email [email protected] It gives the error: SMTP Error (450): Failed to add recipient "[email protected]" (4.1.1 : Recipient address rejected: User unknown in virtual mailbox table). I'm guessing because it is looking at the local server to find the mailbox and it doesn't exist. So how to I tell the server for any mail going to mcdonalds.com for [email protected] to send to my external mail server and NOT to lookup on the local www box we set up with zpanel. Any ideas?

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• wget recursively download from pages with lots of links

  - by Shadow

  When using wget with the recursive option turned on I am getting an error message when it is trying to download a file. It thinks the link is a downloadable file when in reality it should just be following it to get to the page that actually contains the files(or more links to follow) that I want. wget -r -l 16 --accept=jpg website.com The error message is: .... since it should be rejected. This usually occurs when the website link it is trying to fetch ends with a sql statement. The problem however doesn't occur when using the very same wget command on that link. I want to know how exactly it is trying to fetch the pages. I guess I could always take a poke around the source although I don't know how messy the project is. I might also be missing exactly what "recursive" means in the context of wget. I thought it would run through and travel in each link getting the files with the extension I have requested. I posted this up over at stackOverFlow but they turned me over here:) Hoping you guys can help.

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• How browsers handle multiple IPs

  - by Sandman4

  Can someone direct me to information on exact browsers behavior when browser gets multiple A records for a given hostname (say ip1 and ip2), and one of them is not accessible. I interested in EXACT details, like (but not limited to): Will browser get 2 IPs from OS, or it will get only one ? Which ip will browser try first (random or always the first one) ? Now, let's say browser started with the failed ip1 For how long will browser try ip1 ? If user hits "stop" while it waits for ip1, and then clicks refresh which IP will browser try ? What will happen when it times-out - will it start trying ip2 or give error ? (And if error, which ip will browser try when user clicks refresh). When user clicks refresh, will any browser attempt new DNS lookup ? Now let's assume browser tried working ip2 first. For the next page request, will browser still use ip2, or it may randomly switch ips ? For how long browsers keep IPs in their cache ? When browsers sends a new DNS request, and get SAME ips, will it CONTINUE to use the same known-to-be-working IP, or the process starts from scratch and it may try any of the two ? Of course it all may be browser dependent, and may also vary between versions and platforms, I'd be happy to have maximum of details. The purpose of this - I'm trying to understand what exactly users will experience when round-robin DNS based used and one of the hosts fails. Please, I'm NOT asking about how bad DNS load balancing is, and please refrain from answering "don't do it", "it's a bad idea", "you need heartbeat/proxy/BGP/whatever" and so on.

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• My Ruby on Rails application only works if the address contains the port

  - by True Soft

  I have a Ruby on Rails application that works ok on my notebook ( http://localhost:3000/ ) I uploaded it on my hosting server, created with CPanel X an application, the URL is http://example.com:12007/ created a rewrite from http://example.com/ to http://example.com:12007/, and started it. If I write in my browser http://example.com:12007/ or http://www.example.com:12007/ all the pages work as expected. But if I write http://example.com/ or http://www.example.com/ the first page is displayed, but without any css or images (just like it wouldn't find them). I can see all the text (even the text from my MySQL database), but with no format. And if I click on any link, I get a error page like this: Not Found The requested URL /some_controller was not found on this server. Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request. What should I do to make my website work without writing the port in the address bar? The content of my /public_html/.htaccess file is RewriteEngine on RewriteCond %{HTTP_HOST} ^example.com$ [OR] RewriteCond %{HTTP_HOST} ^www.example.com$ RewriteRule ^/?$ "http\:\/\/127\.0\.0\.1\:12007%{REQUEST_URI}" [P,QSA,L] which I guess was generated by CPanel Rewrites.

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• AJP Connector Apache-Tomcat with php and java application

  - by Safari

  I have a question about proxy and ajp module. On my machine I have a Apache web server and a Tomcat servlet container. On Tomcat is running a my java webapplication. On Apache I have some services and I can call these in this way: http://myhos/service1 http://myhos/service2 http://myhos/service3 I would configurate a ajp connector to call my tomcat webapplication from Apache. I would somethin as http://myhost to call the Tomcat webapp. So, I configurated my apache in this way..and I have what I wanted: I can use http://myHost to visualize the Tomcat webApp by Apache. <VirtualHost *:80> ProxyRequests off ProxyPreserveHost On ServerAlias myserveralias ErrorLog logs/error.log CustomLog logs/access.log common <Proxy *> Order deny,allow Allow from all </Proxy> ProxyPass /server-status ! ProxyPass /balancer-manager ! ProxyPass / balancer://mycluster/ stickysession=JSESSIONID nofailover=Off maxattempts=1 <Proxy balancer://mycluster> BalancerMember ajp://myIp:8009 min=10 max=100 route=portale loadfactor=1 ProxySet lbmethod=bytraffic </Proxy> <Location /balancer-manager> SetHandler balancer-manager Order deny,allow Allow from localhost </Location> LogFormat "%h %l %u %t \"%r\" %>s %b \"%{Referer}i\" \"%{User-Agent}i\"" combined LogFormat "%h %l %u %t \"%r\" %>s %b" common LogFormat "%{Referer}i -> %U" referer LogFormat "%{User-agent}i" agent </VirtualHost> But, now I can't use the apache services: If I use http://myhos/service1 I have an error because apache try to search service1 on my tomcatWebApp. Is there a way to fix it?

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• plesk: how to configure reverse proxy rules properly?

  - by rvdb

  I'm trying to configure reverse proxy rules in vhost.conf. I have Apache-2.2.8 on Ubuntu-8.04, monitored by Plesk-10.4.4. What I'm trying to achieve is defining a reverse proxy rule that defers all traffic to -say- http://mydomain/tomcat/ to the Tomcat server running on port 8080. I have mod_rewrite and mod_proxy loaded in Apache. As far as I understand mod_proxy docs, entering following rules in /var/www/vhosts/mydomain/conf/vhost.conf should work: <Proxy *> Order deny,allow Allow from all </Proxy> ProxyRequests off RewriteRule ^/tomcat/(.*)$ http://mydomain:8080/$1 [P] Yet, I am getting a HTTP 500: internal server error when requesting above URL. (Note: I decided to use a rewrite rule in order to at least get some information logged.) I have made mod_rewrite log extensively, and find following entries in the logs [note: due to a limitation of max. 2 URLs in posts of new users, I have modified all following URLs so that they only contain 1 slash after http:. In case you're suspecting typos: this was done on purpose): 81.241.230.23 - - [19/Mar/2012:16:42:59 +0100] [mydomain/sid#b06ab8][rid#1024af8/initial] (2) init rewrite engine with requested uri /tomcat/testApp/ 81.241.230.23 - - [19/Mar/2012:16:42:59 +0100] [mydomain/sid#b06ab8][rid#1024af8/initial] (3) applying pattern '^/tomcat/(.*)$' to uri '/tomcat/testApp/' 81.241.230.23 - - [19/Mar/2012:16:42:59 +0100] [mydomain/sid#b06ab8][rid#1024af8/initial] (2) rewrite '/tomcat/testApp/' - 'http:/mydomain:8080/testApp/' 81.241.230.23 - - [19/Mar/2012:16:42:59 +0100] [mydomain/sid#b06ab8][rid#1024af8/initial] (2) forcing proxy-throughput with http:/mydomain:8080/testApp/ 81.241.230.23 - - [19/Mar/2012:16:42:59 +0100] [mydomain/sid#b06ab8][rid#1024af8/initial] (1) go-ahead with proxy request proxy:http:/mydomain:8080/testApp/ [OK] This suggests that the rewrite and proxy part is processed ok; still the proxied request produces a 500 error. Yet: Addressing the testApp directly via http:/mydomain:8080/testApp does work. The same setup does work on my local computer. Is there something else (Plesk-related, perhaps?) I should configure? Many thanks for any pointers! Ron

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• Mac Finder: WD My Passport won't mount

  - by Matt

  I really need your help. I have a WD My Passport 650GB (with Firewire and USB). I'm using it for almost a year now and it always worked fine. While underway I simply plug it in via Firewire - at home I connect it to my Airport Extreme to have it available as a network storage. Today I connected the hd to my macbookpro (via firewire) and NOTHING. The hd is starting (clearly making a sound and the power-indicator is flashing) but it won't appear in Finder. I also tried it with USB - no sign. I ran Disk Utility and tried to repair the disk. At first try I got a red error line saying that something is wrong with the "headers". However the repair completed with a success message saying that everything is ok. I also verified the hd. Also with a success message. I did that a few times again and unplugged it in between. Never got the error with the headers again - it's always completing and saying everything is ok. However I can't mount the drive. That is what Disk Utility is showing. Any ideas on that? I really need the files on that hd. thank you in advance!

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• Solaris Mysql Failure and Unable to Restart

  - by Iscariot

  Environment: Solaris 10 This mysql server has been up and running for 6 months now. Today all of a sudden it crashed. When typing 'mysql' as user it gives the error MYSQL" Error 2002 (HY000): Can't Connect to Local MySQL server though socket '/tmp/mysql.sock' when typing mysql as root it says mysql: not found. The server try to open mysql, it stays open for 9-10 seconds and restarts the process. Below are the application logs. Application-database-mysql_mysql-csk.log [ May 30 22:37:52 Enabled. ] [ May 30 22:37:58 Rereading configuration. ] [ May 30 22:37:59 Executing start method ("/opt/coolstack/lib/svc/method/svc-cskmysql start") ] /opt/coolstack/mysql/bin/mysqld_safe --user=mysql --datadir=/dbpool1/data --pid-file=/dbpool1/data/database.soliaonline.com.pid [ May 30 22:37:59 Method "start" exited with status 0 ] [ May 30 22:38:13 Stopping because all processes in service exited. ] [ May 30 22:38:13 Executing stop method ("/opt/coolstack/lib/svc/method/svc-cskmysql stop") ] [ May 30 22:38:13 Method "stop" exited with status 0 ] [ May 30 22:38:13 Executing start method ("/opt/coolstack/lib/svc/method/svc-cskmysql start") ] /opt/coolstack/mysql/bin/mysqld_safe --user=mysql --datadir=/dbpool1/data --pid-file=/dbpool1/data/database.soliaonline.com.pid [ May 30 22:38:13 Method "start" exited with status 0 ] [ May 30 22:38:25 Stopping because all processes in service exited. ] [ May 30 22:38:25 Executing stop method ("/opt/coolstack/lib/svc/method/svc-cskmysql stop") ] [ May 30 22:38:25 Method "stop" exited with status 0 ] I am hoping someone might have run into this before and might know how to fix it.

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• Installing and running two postgresql versions on different ports (or two instances of same server)

  - by Andrius

  I have postgresql 9.1 installed on my machine (Ubuntu). I need another postgresql server that would run next to the old one. Exact version does not matter, but I'm thinking of using 9.2 version. How could I properly install and run another postgresql version without screwing old one (like upgrading). So those versions would run independently on different ports. Old one on 5432 and new one on 5433 for example. The reason I need this is for two OpenERP versions databases. If I run two OpenERP servers (with different versions) on single postgresql port, it crashes because new OpenERP version detects old versions database and tries to run it, but it crashes because it uses another schemes. P.S or maybe I could just run same postgresql server on two ports? Update So far I tried this: /usr/lib/postgresql/9.1/bin/pg_ctl initdb -D main2 It created new cluster. I changed port to 5433 in new clusters directory postgresql.conf file. Then ran this: /usr/lib/postgresql/9.1/bin/pg_ctl -D main2 -l logfile start I got response server starting. But when I tried to enter new cluster's template database with: psql template1 -p 5433 I got this error: psql: could not connect to server: No such file or directory Is the server running locally and accepting connections on Unix domain socket "/var/run/postgresql/.s.PGSQL.5433"? Also now when I try to stop server with: /usr/lib/postgresql/9.1/bin/pg_ctl -D main2 -l logfile start I get this error: pg_ctl: PID file "main2/postmaster.pid" does not exist Is server running? So I don't understand if server is running and what I'm missing here? Update Found what was wrong. Stupid me. I didn't notice that when I changed port in .conf file, that line was commented already. So actually I didn't change anything first time, but thought I did and it used default 5432 port.

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• IIS 7.5 truncating POST body containing JSON data with ASP.NET MVC 3

  - by Guneet Sahai

  I'm facing a problem which I hope is a configuration thing with IIS but is right now giving a lot of trouble. Basically I have a controller that accepts a JSON and does some processing. While it generally works fine, but every now and then when the system has some load I get an error. After some painful debugging, we figured the incoming JSON gets truncated which causes the deserialzer to fail. To narrow down the problem - we wrote a simple controller that accepts a JSON and tries to deserialize it. In case it fails it just logs it. This works fine but when I hit it using a load testing tool (JMeter) it throws the same error (truncation) for a few requests. The # of failures increased when I increase parallel connections. It starts showing with 150 concurrent requests. We are running IIS 7 on windows 2008 server with ASP.Net MVC 3 with more or less default configuration of IIS. More information available in my question below http://stackoverflow.com/questions/12662282/content-length-of-http-request-body-size

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