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  • How to check for bottlenecks in Windows Server 2008 R2

    - by Phil Koury
    I recently switched out a 10 year old server for a brand new server in a small office and upgraded from Windows Server 2000 to Windows Server 2008 R2. After the switch was complete and some configurations were changed around we are running into what appear to be some bottlenecks in the network speed. Accessing programs on the server is slower (resulting in long loading times, slower report generation, etc.) than it was on the old server hardware. I am wondering what options or tools I have, if there are any at all, to find out exactly where these hang ups might be coming from.

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  • Browser says "Waiting for www.xyz.com" for a very long time

    - by Phil
    When I load my website (hosted with Ipage). The browser often takes an incredible long time saying "Waiting for www.xyz.com ..." before any elements of the site actually appear. After this "Waiting for" process, the text, images and everything else actually load quite fast. I contacted my host with my tracert result and they said they optimized my website database and increased the memory available to PHP on my account to 64 Mb.They also said they have checked the issue by accessing my website and found that it is loading fine without any slowness. It seems to be a temporary issue. Please try to access your website with different browser and network. I tried different browsers and networks but this "Waiting for" process always takes too long. My website is http://www.surreyextra.com/ . It's Wordpress and BuddyPress. I'm in the UK while Ipage host is placed in the USA, can this potentially be a problem? I have tried a number of optimizations, like minifying my CSS and JS files and use catching but the problem hasn't improved. So is it my host's fault, should I contact them again?

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  • Windows 8, Truecrypt drive mounts but Windows cannot read its content

    - by phil
    I installed Windows 8 and when I started it, it said that it was repairing a disk. The disk was an encrypted Truecrypt disk. I couldn't mount the disk in Truecrypt after that. I tried to repair the header and it worked, now I can mount the disk but neither Windows 7 or 8 can read the content. Windows asks if it should format the disk. I have all the important files on backup, but there are some media files that I would like to get back. Any ideas?

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  • How to choose a web server for a Python application?

    - by Phil
    Information and prerequisites: I have a project which is, at its core, a basic CRUD application. It doesn't have long running background processes which it forks at the beginning and talks to later on, nor does it have long running queries or kept alive connection requirements. It receives a request, makes some queries to the database and then responds. In order to serve static files and cachable files fast, I am going to use Varnish in all cases. Here is my question: After reading about various Python web application servers, I have seen that they all have their "fans" for certain, usually "personal" reasons, which got me confused since each usecase differs from the next. How can I learn about the core differentiating factors of Python web servers (in order) to decide how suitable they are for my project and if one would be better than the other? What are your (technically provable) thoughts on the matter? How should I choose a Python web server? Thank you.

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  • root directory - www or public_html

    - by Phil Jackson
    Is the root directory where all files are kept (directly from accessing from FTP) always "www" or "public_html" depending on what OS? Or is it possible to rename this folder? And if so, what would be unique about this folder to be able to identify it? i.e. currently I just wrote this; my $root; my $ftp = Net::FTP->new($DB_ftpserver, Debug => 0) or die "Cannot connect to some.host.name: $@"; $ftp->login($DB_ftpuser, $DB_ftppass) or die "Cannot login ", $ftp->message; my @list = $ftp->dir; if( scalar @list != 0 ) { foreach( @list ){ if( $_ =~ m/www$/g ){ $root = "www"; last; }elsif( $_ =~ m/public_html$/g ){ $root = "public_html"; last; } } } but would not work if it has a different name. Any help much appreciated.

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  • FTP passive mode with limited port range?

    - by Phil Keeling
    I am running FileZilla FTP Server with passive mode enabled, and due to firewall constraints I have to limit the passive mode port range to only 6 ports. My question is how would FileZilla handle any situation where more than 6 concurrent FTP connections are active and want to passively upload a file. Would it queue the connections and prioritise them in a first in, first out manner? I'm not too familiar with FTP so any insight would be appreciated.

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  • Why would the servers network type change from Private to Public?

    - by Phil Hannent
    Just found a fault with a server, other users have had problems connecting to it. The setting on the network card had changed from Private (domain) network to Public (the other option being Home). The switch to the network interface would have caused the firewall to block a lot of normal functions. I am guessing that since the event log showed no reason for the change that it might be due to a complete shutdown we had recently where someone powered up the machines, however the domain controllers might not have been booted up first. Any confirmation that this might be the case?

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  • compressing dd backup on the fly

    - by Phil
    Maybe this will sound like dumb question but the way i'm trying to do it doesn't work. I'm on livecd, drive is unmounted, etc. When i do backup this way sudo dd if=/dev/sda2 of=/media/disk/sda2-backup-10august09.ext3 bs=64k ...normally it would work but i don't have enough space on external hd i'm copying to (it ALMOST fits into it). So I wanted to compress this way sudo dd if=/dev/sda2 | gzip > /media/disk/sda2-backup-10august09.gz ...but i got permissions denied. I don't understand.

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  • How can I make my Virtualbox Vista see my USB device (iPad)?

    - by phil
    I have the latest VirtualBox. I have filters for the iPad. But it does not show up in my virtual Windows vista My Computer screen or virtual iTunes. When I try to right click the little USB icon and select it it says it failed because the device is busy with a previous request Result code: E_INVALIDARG (0X80070057) Component: HostUSBDevice Interface: IHostUSBDevice {173b4b44-d268-4334-a00d-b6521c9a740a} Callee: IConsole {515e8e8d-f932-4d8e-9f32-79a52aead882} Any help is greatly appreciated Note: running 64bit Windows Vista Virtual on a 64bit Windows Vista (Home Premium) EDIT: my iPad is in recovery mode, maybe why it can't be seen in virtualbox? Also my host is running Zonealarm firewall and Microsoft Security Essentials. In addition the guest has AVG antivirus. Could those programs conflict with virtualbox?

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  • How to protect Ruby on Rails code on external server?

    - by Phil Byobu
    I have to deploy a Ruby on Rails Applications on a client's server and I do not want them to be able to view or modify the source code. How would you protect the code technically? I thought about building a linux-based virtual machine with an encrypted filesystem where the application code resides. The client has no root access, or direct access to the system at all. All services start automatically and the application is ready to use. What would you suggest?

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  • How to deny access to disabled AD accounts via kerberos in pam_krb5?

    - by Phil
    I have a working AD/Linux/LDAP/KRB5 directory and authentication setup, with one small problem. When an account is disabled, SSH publickey authentication still allows user login. It's clear that kerberos clients can identify a disabled account, as kinit and kpasswd return "Clients credentials have been revoked" with no further password / interaction. Can PAM be configured (with "UsePAM yes" in sshd_config) to disallow logins for disabled accounts, where authentication is done by publickey? This doesn't seem to work: account [default=bad success=ok user_unknown=ignore] pam_krb5.so Please don't introduce winbind in your answer - we don't use it.

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  • Windows DFS Limitations

    - by Phil
    So far I have seen an article on performance and scalability mainly focusing on how long it takes to add new links. But is there any information about limitations regarding number of files, number of folders, total size, etc? Right now I have a single file server with millions of JPGs (approx 45 TB worth) that are shared on the network through several standard file shares. I plan to create a DFS namespace and replicate all these images to another server for high availability purposes. Will I encounter extra problems with DFS that I'm otherwise not experiencing with plain-jane file shares? Is there a more recommended way to replicate these millions of files and make them available on the network? EDIT: I would experiment on my own and write a blog post about it, but I don't have the hardware for the second server yet. I'd like to collect information before buying 45 TB of hard drive space...

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  • ESXi 4 failed to find boot device

    - by phil
    I had exsi 3.5 running just fine, the upgrade to 4 failed ( i thought it would so everything is backed up ). but it did boot just could not import the data store So i did a fresh install of ESXi 4. Now it says failed to find boot device. Not sure why. i have wiped the disk, the controller is a adaptec 3405, it worked fine in 3.5 and when i upgrade to 4 it did boot. Now it just hangs at loading vfat. then the failed to find boot device. Any ideas?

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  • external drive and CentOS - Reset high speed USB device number

    - by Phil
    I have 2 external drives (3TB) and both will not work with my centOS Box. Tested them in windows ( different machine ) No problems ( 2.6.32-279.9.1.el6.i686 ) dmesg reports: usb 2-2: new high speed USB device number 3 using ehci_hcd usb 2-2: New USB device found, idVendor=2109, idProduct=0700 usb 2-2: New USB device strings: Mfr=1, Product=2, SerialNumber=3 usb 2-2: Product: USB 3.0 SATA Bridge usb 2-2: Manufacturer: VIA Labs, Inc. usb 2-2: SerialNumber: 0000000000006121 usb 2-2: configuration #1 chosen from 1 choice scsi6 : SCSI emulation for USB Mass Storage devices usb-storage: device found at 3 usb-storage: waiting for device to settle before scanning usb-storage: device scan complete scsi 6:0:0:0: Direct-Access ST3000DM 001-9YN166 CC4B PQ: 0 ANSI: 2 sd 6:0:0:0: Attached scsi generic sg3 type 0 sd 6:0:0:0: [sdd] Very big device. Trying to use READ CAPACITY(16). sd 6:0:0:0: [sdd] 5860533165 512-byte logical blocks: (3.00 TB/2.72 TiB) sd 6:0:0:0: [sdd] Write Protect is off sd 6:0:0:0: [sdd] Mode Sense: 00 06 00 00 sd 6:0:0:0: [sdd] Assuming drive cache: write through sd 6:0:0:0: [sdd] Very big device. Trying to use READ CAPACITY(16). sd 6:0:0:0: [sdd] Assuming drive cache: write through sdd: sdd1 sd 6:0:0:0: [sdd] Very big device. Trying to use READ CAPACITY(16). sd 6:0:0:0: [sdd] Assuming drive cache: write through sd 6:0:0:0: [sdd] Attached SCSI disk Tyring to use cfdisk / fdisk / gdisk or even fdisk -l results in the program hanging and dmesg reports: usb 2-2: reset high speed USB device number 3 using ehci_hcd usb 2-2: reset high speed USB device number 3 using ehci_hcd usb 2-2: reset high speed USB device number 3 using ehci_hcd I have the same 2 drives physically installed in the computer via SATA Any Ideas?

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  • Easily manage vsftpd virtual users?

    - by Phil
    I have a vsftpd server configured with many virtual users. logins are stored in a Berkeley DB file One configuration file exists for each user to define his permissions (read-only or read-write, home directory, etc.). To do that, I use the user_config_dir parameter (set in vsftpd.conf). I am wondering if it would be possible to manage these virtual users from a simple GUI (such as web interface). I have found some tools but they are limited to generic vsftpd configuration, not virtual users management. Otherwise, PAM-MySQL seems to be a good way to manage users efficiently but only username/password and logs can be stored in database, not permissions. Finally, I've found this thread, but the solution is a bit awkward... Is there any way to easily manage the vsftpd users ?

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  • If I don't want subdomains to send out email, do I need SPF records for them?

    - by Phil
    I have a main domain with (now) valid SPF record, but we also programmatically create lots and lots of subdomains for clients via cpanel PHPXML API. These subdomains are not intended to send any mail. When we create them, they are getting an A record of my ip, and a TXT record of "v=spf1 +a +mx +ip4:[MY IP] ?all". Those are all the DNS records they have Recently we have had a lot of email spoofing and realized there was an invalid (duplicate SPF) for our main domain. We just fixed that, but are unsure if: 1) Can spammers still spoof email from subdomains without MX records, with above current listed SPF? 2) Is it better to have no SPF for subdomains than the one I have listed? 3) Is there a way to prevent subdomains from sending/spoofing email via my main domain's SPF? Here is the main domain SPF that our host suggested we switch to: "v=spf1 a mx ptr a:dedrelay.[webhost].com include:dedrelay.[webhost].com ~all"

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  • How to compare differences between directories (linux)

    - by Phil
    I have two directories - one from earlier backup and second from newest backup. How do i compare what changes were made to files in directory from newest backup on Linux? Also how do i display changes in for example text and php files - i'm thinking about something like revision history on wikipedia where you see old version on one side of the screen and newest version on other and changes are highlighted. How do i achieve something like that? edit: How do i also compare remote dir with local?

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  • Must have local user to authenticate Samba to AD?

    - by Phil
    I've got a CentOS 5.3 server with Samba running. I've joined this server to my domain in the hopes of allowing AD users some access to my Samba shares. I've found that this works, but only as long as the AD username that I'm trying to authenticate with is also a local user on the server. In other words, if I'm trying to access a share, and try to authenticate with the AD username "joe", I get errors unless I create a user named 'joe' on the server. I don't have to create a matching password or anything....the local user's password is always blank, so I do know that the authentication is actually happening against the AD. Here's my smb.conf file: [global] workgroup = <mydomain> server string = <snip> netbios name = HOME security = ADS realm = <mydomain.com> password server = <snip> auth methods = winbind log level = 1 log file = /var/log/samba/%m.log [amore] path = /var/www/amore browseable = yes writable = yes valid users = DOMAIN\user1 DOMAIN\user2 DOMAIN\user3 DOMAIN\user4 I would assume that my kerberos settings are fine, as I've joined the domain and can use wbinfo to see users and groups. However, I can provide that info if necessary. Anyone have any ideas?

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  • Recover file from NTFS after it was formatted twice

    - by Phil
    I'm running Linux Mint and have a 2TB drive that I formatted as NTFS. I copied ~120GB of files from another computer to the 2TB drive, removing the files from the other computer as I did so. When they were all on the 2TB drive, I zipped them up as file "Gold.tar.gz". Then I reformatted the 2TB drive as ext3 in a moment of absolute stupidity. I formatted the 2TB back to NTFS, but of course everything is gone. Here is what I have tried: TestDisk -- won't find any lost partitions or undelete files, just the current empty one PhotoRec -- seems to only find some broken text files and misidentify their extensions. It never finds the 100's of avi files I had (before the 120GB copy, I already had 750GB on the drive full of avi files) or anything else that would show me it's working properly. Using dd I recovered the first 512MB of the drive and went hunting through it. I found all of the file as MFT entries, including the file "Gold.tar.gz" in a 2048 byte MFT record. I'm looking now for some way of either (1) telling PhotoRec to look at that record, or (2) analyze the MFT record myself and discover the sectors holding the data; I can piece it all together using dd and join the binary output if it's fragmented. One last thing - from the moment I got this drive a few days ago to the incident, there were only file copies made to it and no deletes. I formatted as NTFS, then copied thousands of files, then made a tar.gz, then reformatted to ext3, then reformatted to NTFS again. I'm hoping that the size of the drive and fact that there was no file modification/deleting happening makes for minimal file fragmentation.

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  • Configure New Server for .htaccess

    - by Phil T
    I have a new LAMP CENTOS 5 server I am setting up and trying to copy the configuration from another web server I have. I am stuck with what I think is a mod_rewrite problem. If I go to http://old-server.com/any_page_name.php it correctly routes through some handling code in index.php and shows me a graceful "Page Cannot Be Displayed" message. But if I go to http://new-server.com/any_page_name.php I get an ugly Apache 404 Not Found error message. I looked in both httpd.conf files and they both have only one reference to mod_rewrite. LoadModule rewrite_module modules/mod_rewrite.so So it seems like that should be fine. At the bottom of httpd.conf I have the code: <VirtualHost *:80> ServerAdmin [email protected] DocumentRoot /var/www/html ServerName new-server.com ErrorLog logs/new-server.com-error_log CustomLog logs/new-server.com-access_log common </VirtualHost> Then in the root of /var/www/html I have the exact same .htaccess file that looks like this: RewriteEngine on Options +FollowSymlinks RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_FILENAME} !-d RewriteRule . index.php [L] ErrorDocument 404 /page-unavailable/ <files ~ "\.tpl$"> order deny,allow allow from none deny from all </files> So I don't see why the page load at old-server.com works fine while new-server.com doesn't route through index.php like I want it to do. Thanks.

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  • How can an RSA key be placed in a "non-folder"?

    - by Phil
    I lack a lot of knowledge regarding the subject so please excuse me if my question is very ignorant. I just started out with RSA key authentication to my test-server. It did not work at the beginning and I tried and tried and re-tried to no avail. Then I realised, I was creating "mkdir ~/.ssh" and then "mkdir ~/.ssh/authorized_keys" before placing the id_rsa.pub into the latter folder, which did not work. My question is: How can id_rsa.pub be placed in "authorized_keys", which is not created by "mkdir" therefore not a folder? Thank you.

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  • Passwordless ssh on multiple machines

    - by Phil
    Hi all, I'm quite confused with all the ssh security stuff. I am trying to reconfigure a system that is currently broken for reasons unknown. Machine A is your personal computer that you use whenever you're at home. Machine B is the head node of an HPC cluster and all the other machines C are all identically configured machines which share the home directories of machine B. This is an HPC cluster if you haven't guessed. How would I configure passwordless ssh between any nodes B or C. A can only get to C through sshing into B

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  • From where can I get "Python Launcher" for Mac OS X Lion?

    - by Phil
    I use a macbook (air) with OS X Lion on it. I have Python 2.7 installed already but I can't seem to find a "Python Launcher.app" anywhere on the system. I tried installing with with pip but it couldn't find anything to fetch. I tried searching on Google to find a downloader but my search yielded no results (for downloading). Where can I get this app? I have a folder with 20+ subfolders of GUI examples which in turn contain anywhere from 3 to 5 subfolders. I don't want to go through each within the terminal, would much rather launch these .py scrips from the finder. Thank you for your help.

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  • What kind of scaling method is it, when you add new software to a single server to handle more users? [on hold]

    - by Phil
    I have read about scaling (in terms of terminology and methods). This got me confused about the following: On a single computer, running a web server (say apache), if the system administrator adds a front, caching, reverse-proxy such as Varnish, which in that scenario increase the amount of requests this server is able to handle. My question: Setting up such cache increases the capacity of the server to handle work, hence scales it, but without increasing neither the amount of nodes or the node's capacity. What is the name for this type of scaling?

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