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• Expanding raidz vdev

  - by Blubber

  I'm currently planning on installing FreeBSD 9 on my home server. The machine has 4x 1.5TB disks, and at some point, when HDD prices drop I'll be upgrading to something bigger, perhaps 3TB. The disks are connected to an IBM ServerRaid m1015 in IT mode, this card has room for up to eight disks. Now here is the problem, currently the 4x 1.5TB will be connected to the m1015. Then when prices drop I'll be adding something like 4x 3TB, also connected to the m1015. No problem yet, I can just run 2 raidz2 vdevs and put them in the same pool. But, at some point the 1.5TBs will start to break, or I will have to upgrade them when the pool runs out of space. So I started researching if it's possible to expand a raidz vdev, and I found several pages explaining the same procedure, like this on SF: How to upgrade a ZFS RAID-Z array to larger disks on OpenSolaris?. So I went a head and tried that in vmware, I installed FreeBSD 9 and created 6 virtual disks, 3 of 1GB each and 3 of 10GB each. After building a raidz vdev of the 1GBs I replaced them one by one with the 10GB, but the pool did not increase in size. Is this a limitation of the ZFS implementation in FreeBSD? Or am I just doing something wrong?

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• Why does my ftp(e)s server fails like half of the time

  - by user1092608

  I have this discussion at work regarding our ftp server running via vsftpd. Initially, we have opted to serve ftpes instead of sftp because this seemed the most flexible and straightforward solution for our server to have secure file transmission. Afterwards, our ftp server seems to be a source of issues for our end users. Half of the time, users complain about not working ftp connections. I must say, i tested our FTP trough different infrastructures (=in the field, at random times at random places) and indeed, sometimes behind some configurations (=no idea how they are configured, because the 'field' testing), i recieve errors. Some of the are: Error: Failed to retrieve directory listing (filezilla) Furthermore, behind my basic home configuration, everything seems to be running fine. I (think I) did all the basic configuration checks (passive mode?, firewall for all ports?, ...) and can't seem to find the source. Being a bunch of techies at our small office, yet knowing nothing about infrastructure, some start suggesting that ftps protocol could be the source of issues. ("No, i only knew sftp so far" "Ftps is not widespread"). I, however, strongly doubt this hypothesis, since reading around on the www, asking questions on serverfault, everyone seems to deny this. So, as I would like to avoid reconfiguring, since this involves messing around in our SSH service, our virtual user setup and ftp service, i would need some advice on 1) what could be potentially the general cause? 2) do you have some general tips? 3) would you mind having a look at my configuration file? ----- General Settings ----- write_enable=YES dirmessage_enable=YES nopriv_user=ftpsecure ftpd_banner="Welcome to XXXX FTP!" hide_ids=YES hide_file=.* max_per_ip=10 max_clients=10 local_enable=YES local_umask=022 chroot_local_user=YES secure_chroot_dir=/usr/share/empty userlist_enable=NO userlist_deny=YES userlist_file=/etc/vsftp_deny_users guest_enable=YES guest_username=ftpvirtual virtual_use_local_privs=YES user_sub_token=$USER local_root=/srv/ftp/ftpvirtual/$USER anonymous_enable=NO syslog_enable=NO xferlog_enable=YES xferlog_file=/var/log/vsftpd_xfer.log connect_from_port_20=YES pam_service_name=vsftpd listen=YES listen_port=21 pasv_enable=YES pasv_min_port=30000 pasv_max_port=30030 pasv_address=foo ssl_enable=YES rsa_cert_file=/etc/vsftpd.pem rsa_private_key_file=/etc/vsftpd.pem force_local_data_ssl=YES force_local_logins_ssl=YES ssl_tlsv1=YES ssl_sslv2=YES ssl_sslv3=YES ssl_ciphers=HIGH anon_mkdir_write_enable=NO anon_root=/srv/ftp anon_upload_enable=NO idle_session_timeout=900 log_ftp_protocol=NO dsa_cert_file=/etc/vsftpd.pem Thanks

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• ProxyPass for specific vhost

  - by Steve Robbins

  I have a web server that it set up to dynamically server different document roots for different domains <VirtualHost *:80> <IfModule mod_rewrite.c> # Stage sites :: www.[document root].server.company.com => /home/www/[document root] RewriteCond %{HTTP_HOST} ^www\.[^.]+\.server\.company\.com$ RewriteRule ^(.+) %{HTTP_HOST}$1 [C] RewriteRule ^www\.([^.]+)\.server\.company\.com(.*) /home/www/$1/$2 [L] </IfModule> </VirtualHost> This makes it so that www.foo.server.company.com will serve the document root of server.company.com:/home/www/foo/ For one of these sites, I need to add a ProxyPass, but I only want it to be applied to that one site. I tried something like <VirtualHost *:80> <Directory /home/www/foo> UseCanonicalName Off ProxyPreserveHost On ProxyRequests Off ProxyPass /services http://www-test.foo.com/services ProxyPassReverse /services http://www-test.foo.com/services </Directory> </VirtualHost> But then I get these errors ProxyPreserveHost not allowed here ProxyPass|ProxyPassMatch can not have a path when defined in a location. How can I set up a ProxyPass for a single virtual host?

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• File corruption (bad checksums) in large files copied to VMware guest

  - by AllanA

  In setting up a development lab, I've got a desktop system running ESXi 4.1.0 (free license) on SATA RAID 0 (already purchased and configured when I started this job; I'm open to hardware input as it pertains to my problem.) Its guests so far include two Win2008 Server R2 64-bit VMs and on Ubuntu 10.04 64-bit VM. I'm installing onto the Windows servers. We've been copying off some fairly large files (over a gigabyte) for an installation, hoping to install more quickly from a (virtual) hard drive than from the network for from BD-ROM. The problem is that they keep coming up with different checksums from the originals. The file sizes are the same, but md5sum reports different numbers (and so does the installer, as it refuses to continue when the checksums don't match.) I've tried copying directly from the BD-ROM (attaching the OS drive to the host system's physical drive). I've tried copying the large files onto a co-worker's Windows machine from his Blu-Ray drive; when I do that, the checksums match. But when I copy from his machine to the VM guest over a network share, the checksums no longer match. Thinking this meant a corrupt destination drive, I deleted it in vSphere and added another freshly created drive. The problem persists. I'm not sure what to try next.

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• Ubuntu inside VirtualBox is slow

  - by Kapsh

  I am running an Ubuntu instance on VirtualBox inside XP. Here are the details: Host: Windows XP Pro Guest: Ubuntu 8.10 Total RAM: 3GB RAM For VM: 1GB Total Video Memory: 128MB Video Memory for VM: 40MB Hard Drive: 200GB Hard Drive for VM: 30GB Processor: 2.80GHz Core Duo The problem is that whenever I am inside the virtual machine, things seem so much slower in general. For example Firefox, Eclipse take longer to load, dragging windows show a lag etc. I have tried running Ubuntu before (not inside a VM) and it seemed fantastically fast. So I am disappointed to have to deal with this situation. But I need access to the XP partition without having to reboot and hence the attempt. I am surprised with the perceived slowness since the whole world seems to be doing virtualization and I cannot imagine everyone works on slow systems knowingly. My question is - is there something I should be doing to boost performance? Am I doing something wrong? This is my home machine and I am not sure if this is the right forum to ask. Thanks.

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• after building in more ram, bios/debian does nothing [closed]

  - by derty

  My private server has 2x1gb Ram working with a 64bit Debian and an Q6600 Intel. This runs 2 virtual mashines on it each one recives 512mb RAM. Which you can immagine is a bit tight for the hole system. Now i got 2x2gb ram from a friend. I'm not sure if thery are clocking at the same speed, but i'm sure my power adaptor is not on his limit and can handle that. So there are 2 ram sockets left at the mainboard. I shuted down the system and build in the 4 gigs and looked what happen. After pressing the start button, everything gets noisy as known BUT the screen shows nothing, not even the bios stuff it usally does. Why isn't the system booting? I can immagine that it does not direkt link between booting debian and the bios not showing a thing. Or is it Grub? I mounted the system disk, and i can see it, switch folders write stuff with "vim" it does not seems like there is a problem.

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• USB Device Not Recognized (Mac)

  - by Nargis

  Fortunately, my Mac-pro also made one of my USB storage devices inoperable. My data loss in that USB device but such as another USB device and USB keyboard are unaffected. I have heard that my friend usually trigger this problem by having at least two devices plugged in - typically thumb drives/USB flash drives, and then once a second flash drive is plugged in that become unrecognized. I have only two USB ports and first I think port loose when I connect two USB devices. But later I found these hidden files (“.Spotlight-V100”, “.TemporaryItems”, “.Trashes”, and “._.Trashes”) are created by Mac OS. And before unrecognized that USB device I have deleted these files and my friend had also done the same action. Now I don’t want to test for next USB device to become unrecognized and I won’t deleted any hidden system file inside the flash drives. But I really want to know why these problems happened. Can I delete these hidden files when I only connect to virtual machine (Vista), because I used to delete all useless hidden files from USB flash drives? Any suggestions or thoughts to prevent this or alternative suggestions to fix the problem that take lossless would be much appreciated.

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• Open ports broken from internal network

  - by ksvi

  Quick summary: Forwarded port works from the outside world, but from the internal network using the external IP the connection is refused. This is a simplified situation to make the explanation easier: I have a computer that is running a service on port 12345. This computer has an internal IP 192.168.1.100 and is connected directly to a modem/router which has internal IP 192.168.1.1 and external (public, static) IP 1.2.3.4. (The router is TP-LINK TD-w8960N) I have set up port forwarding (virtual server) at port 12345 to go to port 12345 at 192.168.1.100. If I run telnet 192.168.1.100 12345 from the same computer everything works. But running telnet 1.2.3.4 12345 says connection refused. If I do this on another computer (on the same internal network, connected to the router) the same thing happens. This would seem like the port forwarding is not working. However... If I run a online port checking service on my external IP and the service port it says the port is open and I can see the remote server connecting and immediately closing connection. And using another computer that is connected to the internet using a mobile connection I can also use telnet 1.2.3.4 12345 and I get a working connection. So the port forwarding seems to be working, however using external IP from the internal network doesn't. I have no idea what can be causing this, since another setup very much like this (different router) works for me. I can access a service running on a server from inside the network both through the internal and external IP.

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• Apache2 doesn't serve PHP-scripts correctly [closed]

  - by cmbrnt

  I've run into a problem with my Apache 2.2.16 configuration, running on Debian Squeeze. The problem is that it stopped serving PHP5-scripts completely. When I try to access the sites with Google Chrome, it instead downloads a file called "download", which contains the contents of the script. This is of course not a good thing. It does serve common html-files perfectly... I've been at this for quite a while now, and after all the googling and troubleshooting, I thought it would be a good time to ask you guys. Here's what I've got: The php5 and libapache2-mod-php5 packages are installed /etc/apache2/mods-available contains both php5.load and php5.conf, and these are symlinked from the mods-enabled directory The /etc/php5/ directory is left untouched since the installation. Here's the contents of /etc/apache2/mods-available/php.load: LoadModule php5_module /usr/lib/apache2/modules/libphp5.so And /etc/apache2/mods-available/php.conf: <IfModule mod_php5.c> <FilesMatch "\.ph(p3?|tml)$"> SetHandler application/x-httpd-php </FilesMatch> <FilesMatch "\.phps$"> SetHandler application/x-httpd-php-source </FilesMatch> <IfModule mod_userdir.c> <Directory /home/*/public_html> php_admin_value engine Off </Directory> </IfModule> </IfModule> What am I missing? This is a server with modified virtual hosts and the like, so I might have changed some settings which causes this problem, but simply purging and reinstalling is not an option so far, since the configuration is quite extensive. Any help would be great. Thanks.

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• visually documenting web server configuration and infrastructure

  - by Alex Ciarlillo

  I have just finished a large re-organization and update of our institutions web server(s). This server hosts 3 virtual hosts, 3-4 blogs, 2 wikis, some legacy static HTML pages, and many hosted documents (PDF, .jpg, .xls). I have organized the site into a structure of something like: /var/www/sites/vhost1, vhost2, vhost3 .../wordpress/blogX .../mediawiki/wikiX Data is in a seperate directory structure so I can run a cron task over it to make sure it is all writeable and such. I then symlink to these data directories for each application. /var/www/data/vhost1, vhost2, vhost3 .../wordpress/blogX/uploads .../mediawiki/wikiX/images All Apache configs are in /etc/httpd/conf.d/vhosts.d/vhost1,2,3.conf On top of this there is also a testing server which mirrors this setup. Once changes are fully tested, they are rsynced down to the live server. All the wordpress installs and mediawiki installs are straight form SVN and updates are done by switching branches or "svn up". So my question is how can I best document to share with a) co-workers, b) possible future replacement, c) myself 6 months from now. Obviously I can make a wiki page, excel document, whatever and fill it with text, but I am looking for a more visual representation that I can use to explain the architecture to less-technical people. Ideally it would be awesome if this visual representation could then be expanded to get more technical details.

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• How to automatically start VM created by virt-manager?

  - by Jeff Shattock

  I have created a virtual machine with virt-manager that runs on kvm/qemu. The machine works well when started through virt-manager. However, I would like to be able to start and stop the VM through a script in init.d, so that it comes up and down along with the host. I need to have virt-manager show that the machine is running, and to be able to connect to its console through there. When I use the command line that is produced by running ps -eaf | grep kvm after starting the vm through virt-manager, I get some console messages about redirected character devices, but the machine does start and runs properly. However, I do not get any indication from virt-manager that it has started. How can I modify the command line to get virt-manager to pick up the running VM? Is there anything else about the command line that should change when starting outside of virt-manager? Command line is (slightly reformatted for readability): /usr/bin/kvm -S -M pc-0.12 -enable-kvm -m 512 -smp 1 -name BORON \ -uuid fa7e5fbd-7d8e-43c4-ebd9-1504a4383eb1 \ -chardev socket,id=monitor,path=/var/lib/libvirt/qemu/BORON.monitor,server,nowait \ -monitor chardev:monitor -localtime -boot c \ -drive file=/dev/FS1/BORON,if=ide,index=0,boot=on,format=raw \ -net nic,macaddr=52:54:00:20:0b:fd,vlan=0,name=nic.0 \ -net tap,fd=41,vlan=0,name=tap.0 -chardev pty,id=serial0 -serial chardev:serial0 \ -parallel none -usb -usbdevice tablet -vnc 127.0.0.1:1 -k en-us -vga cirrus

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• Apache Cache with multiple CacheRoots

  - by Tobias Greitzke

  I configured Apache with a CacheRoot directory for each of my domains / virtual hosts: <VirtualHost> ServerName domain1.tld ... CacheRoot /var/www/vhosts/domain1.tld/httpdocs/cache ... </VirtualHost> <VirtualHost> ServerName domain2.tld ... CacheRoot /var/www/vhosts/domain2.tld/httpdocs/cache ... </VirtualHost> I have this up and running for quite a while and so fare it's working pretty well except that I have to empty out the cache manually every so often because htcacheclean does't know of the different directories. Now I would like to setup htcacheclean to watch over the cache directories but as fare as I understand the manual, I can only set it to one cache directory. I would like to do something like this but that doesn't work: <VirtualHost> ServerName domain1.tld ... CacheRoot /var/www/vhosts/domain1.tld/httpdocs/cache htcacheclean -n -t -p/var/www/vhosts/domain1.tld/httpdocs/cache -l1024M ... </VirtualHost> Is it even right to have multiple cache directorys or should I work with just one cache directory for all of the domains?

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• Google MAIL not arriving - relay not allowed

  - by renevdkooi

  I have a server with sendmail, hosting my domain mind-zone.nl, i changed the MX records to point to the server. When I use Hotmail or any other client the email arrives and everything is fine. ONLY mail from GMAIL server is bounced and gmail returns "relay denied". I have set all the virtual server host settings etc, from command line I can send mails as well, hotmail works, etc. Just not gmail. The strange thing is, this is what gmail returns: Look at the lower part: "Received by" it returns some IP address which is not mine and has absolutely nothing with my domain. While when I do a NSLOOKUP and change to google's DNS server it will state that the IP Address for my domain is correctly pointing at my server. Technical details of permanent failure: Google tried to deliver your message, but it was rejected by the recipient domain. We recommend contacting the other email provider for further information about the cause of this error. The error that the other server returned was: 554 554 5.7.1: Relay access denied (state 14). ----- Original message ----- MIME-Version: 1.0 Received: by 10.14.37.138 with SMTP id y10mr3421504eea.43.1297665573901; Sun, 13 Feb 2011 22:39:33 -0800 (PST) Received: by 10.14.29.75 with HTTP; Sun, 13 Feb 2011 22:39:33 -0800 (PST)

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• Hyper-V snapshots – unable to start VM

  - by ahmedz

  I restarted my Host server after shutting down three guest VMs. After I restarted the machine I tried to start the VMs and got an error stating the the VM failed to start. SERVERNAME failed to start. Attachment 'avhd file path' is read only. Please provide read/write access to the attachment. Error: 'General access denied error' SERVENAME failed to start. (virtual machine ID 17292200-wd22-dd22-d23-dddddd2222) The issue seems to be with the disk space. The VHD file for this VM is 128 GB and there are two AVHD files of 58 and 75 GB. Whereas the total disk space on this drive (E) is 280 GB - the free space is only around 23 GB. I understand that the error is caused by the unavailability of the required disk space. Unfortunately, I cannot increase the disk space on this drive. However I have another drive (D) that has 400 GB of free space. I exported this VM to D drive and then tried to add the copied AVHD files but it gives me a similar error. I am running Windows Server 2008 R2 Datacenter. Any help is appreciated.

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• RewriteRule causes POST data to get dumped before I can access it

  - by MatthewMcGovern

  I'm currently setting up my own 'webserver' (a Ubuntu Server on some old hardware) so I can have a mess around with PHP and get some experience managing a server. I'm using my own little MVC framework and I've hit a snag... In order for all requests to make it through the dispatcher, I am using: <Directory /var/www/> RewriteEngine On RewriteCond %{REQUEST_URI} !\.(png|jpg|jpeg|bmp|gif|css|js)$ [NC] RewriteRule . HomeProjects/index.php [L] </Directory> Which works great. I read on Stackoverflow to change the [L] to [P] to preserve post data. However, this causes every page to return: Not Found The requested URL <url> was not found on this server. So after some more searching, I found, "Note that you need to enable the proxy module, and the proxy_http_module in the config files for this to work." The problem is, I have no idea how to do this and everything I google has people using examples with virtual hosts and I don't know how to 'translate' that into something useful for my setup. I'm accessing my webserver via my public IP and forwarding traffic on port 80 to the web server (like I'm pretending I have a domain/server). How can I get this enabled/get post data working again? Edit: When I use the following, the server never responds and the page loads indefinately? LoadModule proxy_module /usr/lib/apache2/modules/mod_proxy.so LoadModule proxy_http_module /usr/lib/apache2/modules/mod_proxy_http.so <Directory /var/www/> RewriteEngine On RewriteCond %{HTTP_REFERER} !^http://(.+\.)?82\.6\.150\.51/ [NC] RewriteRule .*\.(jpe?g|gif|bmp|png|jpg)$ /no-hotlink.png [L] RewriteCond %{REQUEST_URI} !\.(png|jpg|jpeg|bmp|gif|css|js)$ [NC] RewriteRule . HomeProjects/index.php [P] </Directory>

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• Email Proxy Ideas

  - by jtnire

  Hi Everyone, I wish to host some managed email servers for some customers. Each customer will have their own email server which will be an all-in-one virtual machine running postfix, dovecot and some webmail suite. Even though each customer will have their own server, I do not wish to give each email server it's own public facing IP. I wish to avail the use of proxy servers so all customers use the same public IP. As for the "smtp-in" from the public internet, this isn't a problem as I can set up many mx servers (using postfix) which will store-and-forward the mail to the correct server (using transport maps). As for the IMAP access from the customer, I was thinking of using perdition which is an IMAP proxy - I believe that this will suit my needs. I am confused however on what to use for the "smtp-out" proxy. The customers will have to authenticate with their receptive email server, however they will have to go via a proxy of some sort as they won't have direct access to their server instance. It probably can't be a store-and-forward proxy either. Does anyone have any idea on what I could use here? Many Thanks

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• Samba access works with IP address only

  - by Sebastian Rittau

  I added a Debian etch host (hostname: webserver, IP address: 192.168.101.2) running Samba to a Windows network with a Windows 2003 PDC (IP address 192.168.101.3). The Samba server exports a public guest share, called "Intranet". The server shows up fine in the network, but trying to click on it produces an error dialog, stating I don't have the necessary permissions. So does entering \webserver manually and using \webserver\internet states that the path does not exist. Interestingly, accessing the share by IP address (\192.168.101.2 or \192.168.101.2\intranet) works fine. DNS is configured correctly, and "smbclient //webserver/intranet" on another Linux client works fine. One complicating issue is that the webserver is only a VMware virtual machine running on PDC server. Here is our smb.conf: [global] workgroup = Foobar server string = Webserver wins support = yes ; commenting out these wins server = 192.168.101.3 ; two lines has no effect dns proxy = no guest account = nobody [... snipped some unrelated bits, like logging ...] security = share [... snipped some password-related things ...] domain master = no [intranet] comment = Intranet path = /srv/webserver/contents browseable = yes guest ok = yes guest only = yes read only = yes create mask = 0775 directory mask = 0775

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• Nginx: Rewriting directory path to file

  - by Doug

  I'm a little new to Nginx here so bear with me - I want to rewrite a url like foo.bar.com/newfoo?limit=30 to foo.bar.com/newfoo.php?limit=30. Seems pretty simple to do it something like this rewrite ^([a-z]+)(.*)$ $1.php$2 last; The part that I am confused about is where to put it - I've tried my hand at a some location directives but I'm doing it wrong. Here's my existing virtual host config, where should I implement my rewrite? server { listen 80; listen [::]:80; server_name foo.bar.com; root /home/foo; index index.php index.html index.htm; location / { try_files $uri $uri/ /index.html; } location /doc/ { alias /usr/share/doc/; autoindex on; allow 127.0.0.1; deny all; } location ~ \.php$ { try_files $uri =404; fastcgi_split_path_info ^(.+\.php)(/.+)$; include fastcgi_params; fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name; fastcgi_pass unix:/tmp/php5-fpm.sock; fastcgi_index index.php; } } Thanks!

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• Is my current htaccess setting hurting SEO?

  - by user656002

  I have a site that I have redirecting to https. I do this to leverage wildcard SSL for my password protected pages. Everything seems to work fine with testing. For example, whether you type in http or www, you always get redirected to the SSL https... That said, I have about 200-300 external backlinks -- many high quality, yet google webmaster (along with SEOMoz), shows I have just 4... Huh? I'm embarrassed to say I just discovered this. This has led me to hypothesize that maybe my settings in htaccess is messed up, so google isn't recognizing a link because it's recorded on another site as http, instead of https. Maybe? At any rate, here is my simple htaccess setting for 301 www to http (The https redirect must be done inside the virtual host file--I think). I don't have anything in the htaccess file for https RewriteCond %{HTTP_HOST} ^www\.example\.com$ [NC] RewriteRule ^(.*)$ http://example.com/$1 [L,R=301] Like I said, everything works fine for redirect over https, so I'd rather not screw up what works. On the other hand something is very wrong with google finding all my back links, so I need to fix something... I'm just wondering that maybe google isn't picking up a my backlinks from other websites recording me as http because I'm at https. Maybe google doesn't care and it's some other issue. Am I barking up the right tree? If so any quick fixes? Thanks as always!

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• How can I make AdobePS recognize my printer in Win98se?

  - by Jeff

  I am trying to use the adobe product: "PostScript Printer Driver AdobePS 4.2.6 for Windows 95 and Windows 98" to connect a new HP laser printer (CP1025nw) via USB to a machine running win98SE. I am using the PPD file for "HP color LaserJet PS". The Adobe utility installs the printer, and it shows up on the printer list ... but it doesn't print. I get an error message (sometimes) that an error occurred writing to USB001.. Evidently, AdobePS cannot "See" the printer. I suspect there is a problem wrt the printer port. Nothing I pick works. I have two virtual printer ports, USB001 and USB002 which were created during the installation of an HP inkjet printer. The inkjet will work on either of these, but the laser printer works on neither. When I connect the laserjet printer, the windows New Hardware Wizard activates, but I don't see how to point it at the AdobePS Postscript driver. HP has no support whatsoever for win98, so there's no hope of getting help from them. The printer works great with the several winXP computers connected through either the network connection or the USB. So, how do I convince Win98se to use the adobe postscript printer driver? Is this printer even a postscript printer? Is there a better way to get win98se to talk to this printer? Any suggestions?

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• Is there such a thing as a file hosted container which deduplicates data held within?

  - by Mallow

  Background I have backups of a website which stores all of it's data into a single file. This file is several gigs large and I have many different backups of this file. Most of the data within is mostly the same plus whatever was added or changed to it. I want to keep all the concurrent backups I've made through the years in case I find a horrible surprise of data corruption along the line. However storing a 10gig file every month gets expensive. Seeking Solution I've often thought about different ways of alleviating this problem. One thought that comes up very often combines the idea of a duplicating file system which doesn't require it's own partitioned volume on a hard drive. Something like what truecrypt does, what it calls, "file hosted containers" which when using the truecrypt program allows you to mount and dismount that volume as a regular hard drive. Question Is there a virtual hard drive mounter which uses file-based container which uses data deduplicaiton file system? (This question is a little awkward to put into words, if you have a better idea on how to ask this question please feel free to help out.)

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• How to deploy new instances of the same application (on 1 server) automatically?

  - by Intru

  I'm working on a SaaS application where each customer runs its own version of the application. All the application instances currently run on a single server. This works quite well for us (we need less resources in total). The application doesn't use a lot of resources, so even a small VPS would be overkill (and more expensive). Adding a new customer is currently quite a bit of work: Create a user that is allowed to ssh Create a new MySQL database and user Create a virtual host for the application Log in with the new user, do a git checkout of the application (in the right location) Create tables in the new database, and add some init data Add some cron jobs Create a first user that can log in Add this new instance to capistrano What would be the best way to automate these tasks? Are the applications that can (given proper configuration) do this? Ideally this should be usable for a sales-person (so something web-based). I could write a (bash) script that does most of these tasks, and then maybe add a small web-based wrapper where someone could provider the domain/default user information. Of course, this would also require a delete-script, since some customers will eventually leave, which means that you need a list of all existing customers/instances.

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• Windows Server 2008 R2 grinds to a screeching halt during file copy operations

  - by skolima

  When my Windows Server 2008 R2 machine is performing any large disk operations (copying 10GB files from one drive to another, copying similar file over network, merging HyperV snapshots, compressing large files), performance of the whole machine slows down terribly, everything becomes unresponsive. This is noticeable in any situation when the disk access is large enough not to fit in the cache. Are there any settings available for tuning this behaviour? I can accept slower file transfer if this would give me more responsiveness. System details: Dell Optiflex 960, Core 2 Quad Q9650, 8GB RAM, 2 SATA drives - 320GB (ST3320418AS) and 1TB (ST31000528AS), NCQ active on both, Intel 82564LM-3 Gigabit Ethernet, ATI HD 3450 graphics, Intel ICH10 bridge. We have multiple machines like this, every one is exhibiting the same behaviour. I though this was overkill for a workstation, apparently I was mistaken. Update: I guess I shouldn't have mentioned the HyperV at all. The above configuration is a standard workstation setup at the company I work for, this is not a server of any kind. I have at most 3 virtual machines working, and usually I'm the only person accessing them. Never the less, the slowdown occurs even when no VMs are running. On a Linux machine I'd simply ionice the copy process and I could forget about it, is there any way to manage IO priorities on Windows?

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• How To Completely Move Users/Program Files/Program Files (x86)/ProgramData (Folders) To Another Partition(s) On Windows 8?

  - by Enigma83

  I am attempting to move folders Users Program Files Program Files (x86), ProgramData (at the root of the C drive) to at least 2 other partitions, preferably on a fresh install. I have read that there are methods for doing this post-install, but it seems like it would be a bit more tedious to do things that way. I want to move the 2 Program Files folders to another partition on the same HDD, and Users/ProgramData will go to yet another partition on same HDD. I have done a bit of research on this, read up on some things that involved booting into Audit Mode, using the RoboCopy command to copy folders via booting into my Windows 8 USB drive, creating NTFS junctions/symbolic links, Registry edits, as well as accomplishing this automatically by creating an auto-attend file which Windows Setup processes automatically before the user is ever booted in for the 1st time. I tried this morning and now have a basic installation in which programs like Internet Explorer fail to open, certain files can't be found/opened (even if I click on them directly), an example is Regedit. Also, I can't run the Command/DOS (CMD) prompt as Administrator (or otherwise, as any other user), can't activate the real Administrator account or open any of the Administrative Tools (despite having added them to my Start Screen). So far I have only tried RoboCopy-ing Program Files and Program Files (x86) so far, creating junction points for them, and editing the Registry in the relevant locations. This is what I'm left with now. I also found the following blog article which describes how to do this for Windows 7 So, where should I go from here and where can I find more information? And how can this be done without disabling the Metro apps, which I've read will stop working if you move ProgramData. Once I have everything moved, where do I install programs to? Do I tell them to install to C:\Program Files\Program Files (x86) or to the junctioned/symbolic-linked partition/drive? I plan to test in VMware virtual machines from here on until things are working correctly, while using a baseline default install for daily tasks.

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• Is there a learnable filter in Thunderbird for non-spam messages (as in Opera Mail)?

  - by Debilski

  One feature I like very much about Opera Mail is that you can have learnable filters for any purpose. So not only can you filter spam messages but also messages that your friends sent you or info mails from web platforms without having to enter each and every mail address you want to filter. It actually works quite satisfying and you can combine it with string filtering, too. It does a few mistakes in the beginning but then improves quickly after you have removed some of the false positives. However, there are a couple of drawbacks with the Opera Mail module. The filters are only ‘virtual’. So, with IMAP there is no easy way of mirroring the filtered structure back on the server and when I’m using webmail I’ll see the whole unfiltered mess in the inbox folder. Opera’s not using the OS X address book — and neither does it use ldap (which is not too important for me at the moment). So, I’m not specifically looking for a Thunderbird solution here, a way to fix things in Opera or Apple Mail should do as well. Or some other E-Mail program I don’t even know about yet. (So, to be clear, I’d like to have: OS X Address Book integration, Learnable filters for any type of filtering, Ability to push filtered folder structure to the IMAP server) But I thought like, if it is possible then most probably there would be an add-on for Thunderbird available. Any ideas?

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