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• CommunityEngine + TinyMCE + Safari or Chrome + My server sometimes generate corrupted code

  - by user31362

  Hello All, I'm using Community engine. It is really a great job But I encountered a strange phenomenon I couldn't solve it. This problem happens only when I open any page contains tinymce by using safari or chrome browsers. It shows me a corrupted code and the page is damaged. kindly check the following photo: http://img190.imageshack.us/img190/5880/screenshot20100111at115.png notice "Delete this user" link then check the source code. There is a weird code injecting itself in the original code. The weird code is tinymce thing: <script type="text/javascript" src="http://ce.mysite.net/plugin_assets/ community_engine/javascripts/tiny_mce/themes/advanced/langs/en.js? 1260693864"></script> <script type="text/javascript" src="http://ce.mysite.net/plugin_assets/ community_engine/javascripts/tiny_mce/plugins/curblyadvimage/langs/ en.js?1260693864"></script> it injected between onclick=" and if (confirm.... I deployed CE on my laptop and my server. I didn't see this problem locally but sometimes (not always) this problem appears on my server. I'm sure that I installed all required gems on the server This bug is annoyed me and I wish to help me. Thanks

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• Move OS from RAID5 array to RAID 1 arrays

  - by Antoine

  I want to give a last boost to my old ProLiant ML350 G5 server which just needs to be reliable for a few more year only ! With a defined budget of about 1500$ (I do not have more), i plan to replace the CPU (+ adding a second one), the battery cache of my raid controller (E200i), double the RAM, and change all hard drives. I have 7 HDD (SAS 10krpm, 72Gb) + 1 spare in RAID5, and my system is all FULL (no empty tray, full disks). in my current RAID5 array, I have 2 partitions: - 1 OS partition, 20Gb - 1 data partition, 350 Gb I plan to replace these 8 disks with : - 2 x 300Gb SAS 15krpm in RAID 1 (= 1 partition for OS) - 2 x 2Tb SATA 7.2krpm in RAID 1 (= 1 partition for DATA) My biggest constraint is that I have only 01 day to upgrade my server. Therefore, I'm looking for cloning all my files (OS + data partition) to my new arrays, i.e : - the OS partition shall be cloned to the RAID1 "2x300Gb array" - the data partition shall be cloned to the RAID1 "2x2Tb array" My second problem is that I need to physically remove all the old hard drives before inserting the new ones. I'm running Windows Server 2003 R2, and even if MS support will expire soon, I cannot buy a new licence and spent time in configuration. Obviously, with 1500$, I cannot also buy a new server that I could start configuring from now ! Thought about ASR (NTBackup), but I have no floppy drive (and do not really want to invest in one !) Thought about a clonezilla clone, and read this interesting link : Windows Server 2003 - move C: partition to a new SAS disk , but i'm not so confident in using Clonezilla with RAID5. What should be the best option to quickly and easily (if possible!) "copy/paste" my OS (so no need to reinstall and reconfigure all) and DATA / programs / services, etc... ? Thanks for your comments

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• Streaming music throughout the house on a budget?

  - by greggannicott

  I was wondering whether anyone knew of a way to stream music throughout a house on a budget? I want to avoid spending any money on this (eg. I don't want to buy a d-link style device). It would be ideal if I could use my existing hardware and some open source software. I have three old(ish) PCs knocking around. I'm happy to stick either Windows or Linux on them. They can all be hooked up to speakers. The ideal solution would result in: the same audio being heard from every device (eg. when you hear a beat on one device, you'd hear it at the exact same time on another (so you don't get any echo)) I'd be able to control the source application (eg. the songs lined up) with my iPhone. I realise I'm being cheeky with those two wishes - but you never know your luck. Am I asking for too much, or is there a piece of software/protocol out there with this purpose in mind? I've been searching for sometime now, but haven't had any joy. Thanks in advance.

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• Process PHP files from a network share in a vmware virtual machine

  - by nhinkle

  As a testing environment, I have set up a vmware virtual machine running Windows Server 2008 R2. I have Apache and PHP installed (as part of the xampp package). I am doing the development outside of the VM, and so want Apache to serve PHP files from a VM shared folder (which appears as a network share in the VM). I have done this by creating an NTFS symbolic link in Apache's htdocs directory. I can access this directory from the browser, and plain-text files are readable. However, PHP fails to process files, instead returning the following error: Warning: Unknown: failed to open stream: No such file or directory in Unknown on line 0 Fatal error: Unknown: Failed opening required 'C:/xampplite/htdocs/path/to/file.php' (include_path='.;C:\xampplite\php\PEAR') in Unknown on line 0 It appears to be a permissions issue — PHP doesn't seem to be allowed to read the file to process it. However, Apache has no problem opening files in the directory. I cannot figure out how to give PHP the necessary permissions to process the file. Does anybody know of a way to make this work, or else another solution for getting the files into the VM automatically while I develop on the host machine?

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• Remove directory from URL IIS 7.5

  - by xalx

  I've tried to find a solution to this and found some guides out there but none seem to work. I have the following URL - http://www.mysite.com/aboutus.html However there are some other sites which link to my old hosted site and point to http://www.mysite.com/nw/aboutus.html. My issue here is trying to remove the 'nw' directory from the URL's. I have setup the following URL Rewrite in IIS but it does not seem to do anything, <?xml version="1.0" encoding="UTF-8"?> <configuration> <system.webServer> <rewrite> <rules> <rule name="Redirect all to root folder" enabled="true" stopProcessing="true"> <match url="^nw$|^/nw/(.*)$" /> <conditions> </conditions> <action type="Redirect" url="nw/{R:1}" /> </rule> <rule name="RewriteToFile"> <match url="^(?!nw/)(.*)" /> <conditions> <add input="{REQUEST_FILENAME}" matchType="IsFile" negate="true" /> <add input="{REQUEST_FILENAME}" matchType="IsDirectory" negate="true" /> </conditions> <action type="Rewrite" url="/{R:1}" /> </rule> </rules> </rewrite> </system.webServer> </configuration> Any insight would be appreciated.

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• Shortcut to "printer and faxes" on another computer

  - by Doltknuckle

  I have a print server running windows server 2008 that has about 50 printers on it. In windows XP, I was able to connect to the server using the UNC name and make a shortcut to the "printers and faxes" folder. (For the record, I know that it really isn't a folder, but that's outside the scope of this question.) I have recently switched to windows 7 and I find that the jump lists are really useful. One of the things I want to do is make it easy to connect to that server's "printers and faxes" folder. I would like to use something like a shortcut that I can open and go immediately to that location. The problem is that windows 7 doesn't have a way to create a shortcut like you could in WinXP. They have a button on the toolbar that says "view remote printers" which sends you to the correct folder. I'd like to avoid having to type out the server name. I also can't use the "view network" link in windows explorer. Our organization has over 6,000 machines and viewing the network lists all of them. This is all about saving time by using the minimum number of mouse clicks and key presses in normal operation. Does anyone have any suggestions?

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• Requests are making it to my app server, but not into node.js -- why?

  - by Zane Claes

  I detailed in this question on StackOverflow how some random requests are not making it from the client to my Node.js app server, resulting in a gateway timeout. In summary, identical requests are, at random, not even making it far enough to trigger a console.log() in my first line of express middleware. I need to narrow down the problem, though, to find out WHERE the traffic is being lost and it was suggested that I try a packet sniffer on my app servers. Here's my setup: 2x Load Balancers (m1.larges) 2x node.js servers (also m1.large) Here's what's interesting/unusual: the node.js servers started as PHP servers with an Apache stack and continue to serve PHP files for my domain (streamified.me). However, I use a little httpd.conf magic on the app servers so that requests to api.streamified.me get routed over port 8888 to the node.js server: RewriteCond %{HTTP_HOST} ^api.streamified.me RewriteRule ^(.*) http://localhost:8888$1 [P] So, the request hits the load balancer = goes to an app server = gets routed to port 8888 if it's intended for the API = gets handled by node.js So, in the same httpd.conf file, I turned on RewriteLogLevel 5 and then created a simple PHP+CURL script on my localhost to hit my api.streamified.me with a random URL (which should cause node.js to trigger a simple "not found" response) until it resulted in a Gateway timeout. Here, you can see that it has happened -- and the rewrite log shows that the request was definitely received by the app server and forwarded to port 8888... but it was never received by node.js (or, at least, the first line of code in the first line of middleware never gets it...) Image Link: http://i.stack.imgur.com/3OQxS.png

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• Simple vLAN setup

  - by Logan Bissonnette

  I have a basic lab environment set up to try and get 2 vLANs working in hyper-v. I have the following equipment 1 hyper-v server 1 Desktop PC 1 Managed Switch (d-link DES-3052P) 1 cheap router (DI-604) My end goal is to have 1 VM and the desktop on one vLAN with internet, and 1 VM on a separate vLAN with internet access. I am having troubles getting an internet connection to both vLANs. The switch does not have the ability to have asynchronous vLANs. This is my switch configuration Port 1 - Trunk Port - Connected to router Port 2 - Trunk Port - Connected to hyper-v Server Port 3 - Access Port- Connected to Desktop Within hyper-v I have 1 switch and 2 VMs. When the VMs are set up to use vlan ID 1, everything works fine. As soon as a VM is set up to use vlan ID 2, they lose all network connection and cannot communicate with the router anymore. I believe this is because the router is not vLAN aware. Can anyone help me with what settings need to be set up on my switch? I believe I want an egress rule so traffic leaving towards the router is untagged, is that right? If not, any ideas or hints as to what needs to be set up?

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• What is the max supported number of SATA devices (using cable adapters) on a Dell SAS 6/iR adapter?

  - by Zac B

  I've got a Dell SAS 6/iR PCI-E adapter. I don't have a multiplier backplane. I'm planning on connecting SATA (non SAS) drives. If I buy cable adapters only (ones that split a SAS connector on the card to a certain number of SATA cables), how many drives can I connect to this card? The way I see it, there are two limitations: a limitation imposed by the theoretical max number of devices supported on the card (which I've dug through the specs to find, but haven't seen yet), and a limitation imposed by the number of SAS plugs on the card multiplied by the number of SATA cables that come out of the highest-multiplying splitter I can buy. The answer to my question would be the minimum of those two limitations. I've seen 4x SATA coming out of some splitters; are there any that have more? Alternatively, if this is an RTFM question, does anyone have a good link to a "this is how SAS works, this is how you figure out the max number of devices, and this is how the concepts of 'ports', 'lanes', 'endpoint devices', and 'connectors' all relate in SAS-land" document? I've looked around on the Dell docs, but haven't found anything that explains this to someone at my level of understanding of SAN/enterprise storage technologies. Cheers!

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• Did I miss anything when checking for passwords? [migrated]

  - by Keltari

  There's a bit of a story to this, so bear with me... I am looking for a new job and came across a posting for a computer forensics position. Its not really my field, but I thought I would apply anyway, just for fun. To make a longer story shorter, they want you to uncover as many passwords as you can find. I downloaded an image and dd'd it to a thumbdrive. The only thing visible was a text file, which contained a password. I knew there had to be more, so I used an undelete utility and found 2 deleted files. First there was another text file with a password - easy. The other was a .pst file which I mounted into outlook. There were some emails with passwords, as well as an email with an image. Another email has a link to a stegenography site. Obviously, there was a file hidden in the image, so I went to the website and downloaded the stegenography decoder. I had to try some of the passwords I had found to get the file to decrypt, and sure enough, there was another text file with a password. I called it a day at that point. Did I miss any other methods?

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• Gigabit LAN not working on ASUS M2N-MX

  - by chmod

  Today I replace my FastEthernet switch with a newly bought gigabit switch (DGS-1008A). All computers in my house are displaying that the connection speed is 1 Gbps except for one. The computer that is not working is an ASUS M2N-MX which contain an onboard gigabit NIC. See ASUS link for confirmation http://www.asus.com/Motherboards/AMD_AM2/M2NMX/ Here are some info of the machine OS: Windows 7 Ultimate SP1 64bit BIOS version: 1004 (latest) Driver: installed via Windows update (latest from Windows update) Windows Update: fully updated The machine is reformatted 3 days ago, so it's pretty clean, no junk, no virus, etc Cable: Amp CAT5E 5 meters In device manager, the name of the NIC is "NVIDIA nForce 10/100/1000 Mbps Ethernet" What I have try: I did try to install the driver provided in ASUS website, but there isn't any for Windows 7 64 or Vista 64. I did try to install the latest nForce340/6100, downloaded from Nvidia website. However, the LAN driver refuse to install, it complain that I already have the best driver installed. I looking in the property -- advance tab -- Speed/duplex settings, in an attempt to force it to run at 1000Mbps, but there is no 1000Mbps choice, only 10 and 100Mpbs. I change the CAT5E cable (use one from another computer that is running gigabit without problem) Anyone have this issue or know how to solve it? Thanks

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• configuring apache with mod_mono for .net app

  - by Mystere Man

  I'm having a huge problem getting mod_mono and apache configured to work correctly. I've had this working at one time, but I can't seem to figure out where i'm going wrong. I'm using mono-server4. I'm trying to use a seperate port from the main website. So I have in /etc/apache2/sites-available (with a link from sites-enabled) a vhost configuration that looks like this: <VirtualHost *:9999> ServerName XXX ServerAdmin web-admin@XXX DocumentRoot /var/xxx MonoServerPath XXX "/usr/bin/mod-mono-server4" MonoDebug XXX true MonoSetEnv XXX MONO_IOMAP=all MonoApplications XXX "/:/var/xxx" <Location "/"> Allow from all Order allow,deny MonoSetServerAlias XXX SetHandler mono SetOutputFilter DEFLATE SetEnvIfNoCase Request_URI "\.(?:gif|jpe?g|png)$" no-gzip dont-vary </Location> <IfModule mod_deflate.c> AddOutputFilterByType DEFLATE text/html text/plain text/xml text/javascript </IfModule> </VirtualHost> I used mono-server4-admin to create the application mono-server4-admin --path=/var/xxx --app=/XXX --port=9999 When i start apache, it gives the error: Syntax error on line 13 of /etc/apache2/sites-enabled/xxx: Server alias 'XXX, not found. This corresponds with the MonoSetServerAlias statement. So I commented it out, and when I do that apache starts. However, when I try to access the site, I get a 500 error. The access log indicates that it's trying to access the app on port 80, rather than 9999. I'm not sure what the problem is here. Can anyone help me get figure out where I went wrong? My mono-server4-hosts.conf contains this: # start /etc/mono-server4/conf.d/RMRSite/10_XXX Alias /XXX "/var/xxx" AddMonoApplications default "/XXX:/var/xxx" <Directory /var/xxx> SetHandler mono <IfModule mod_dir.c> DirectoryIndex index.aspx </IfModule> </Directory> # end /etc/mono-server4/conf.d/XXX/10_XXX Also, my /etc/mono-server4/conf.d/XXX/10_XXX contains this: This is the configuration file for the XXX virtualhost path = /var/xxx alias = /XXX vhost = localhost port = 9999

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• How do I prevent a tar pipe from causing swapping?

  - by Jeff Shattock

  I have a rather large filesystem that I need to transfer from one Linux server to another. I figured the best way to do this was via a tar/netcat pipe arrangment, something like tar c . | pv | nc blah blah blah And it works great, the network stays fairly saturated, life is good. Until the source machine starts swapping. The files are on a raid on the source system, so the read speed is much faster than the write speed on the other end. Since the dest machine hasnt picked up the data yet, the source machine needs to stick it somewhere, so into RAM it goes, until there is no more free RAM. It then starts swapping, which is horribly painful since that machine has its OS installed on a somewhat slow CF card. Both machines have 4GB of physical ram, 64 bit Ubuntu 9.04 server. GigE link between them. How do I prevent this swapping? Can I put a "speed-limit" on the tar or netcat process so that the transfer speed doesn't overwhelm the write throughput on the destination end? The man pages didn't list anything, but there might be something I'm overlooking.

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• unable to access Internet by wireless but can by cable

  - by Jeff King

  i'M GOING MAD! UNtil last friday I had been successfully using wifi with the supplier as VIRGIN through their Motorola SB 4200 cable Modem and the wireless router being the Linksys WRT 54G router. Supported were three lap tops and an EPSON 510W printer and this had been running with no issue for about 3 years. Back to last friday, we started suffering significant delays and then the network collapsed with no wireless access. I was able to connect a single laptop direct to the cable modem and internet access was restored to just that one device. I thought that the problem was the router so I tried a backup D-Link device with no success. I have subsequently bought another cable modem AND a netgear router plus addidtional ethernet cables but with no success. The best that happens is that the signal appears good but I cannot get access to the internet. A yellow question mark appears on the 'gradient' icon. Each laptop and router works elsewhere so I'm stumped. Mind you I am a real novice so I'm not surprised. Please can anyone tell me what I'm doing wrong?

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• Ubuntu server crashes; need help figuring how to figure out why

  - by neezer

  I have a 768 Slice at slicehost.com running Ubuntu Server 8.04.2 LTS (hardy) with a LAMP stack on it that periodically crashes, though why I am not sure. From what I can tell, there is a process that basically goes rogue and consumes all the memory on the slice, suffocating all the other programs running until the whole thing comes to a grinding halt, and I have to do a hard reboot of the slice to get it back up and running again. I can't detect any pattern for this (it seems to happen about once a month, more or less). Here's a screenshot of my console during the last crash: I would assume that a possible cause might a PHP script or an apache configuration rule that might cause the crash if triggered? How would I be able to find out which one is the offending one? I've checked and rechecked all my PHP scripts, and running them doesn't seem to trigger the crash. I've also been able to log on to my system during a crash and see what's running (with top), but I can't tell how the offending process was started, so I can't trace the root of the problem! I know my description is overly generic, but unfortunately my expertise in tracking down the source of these glitches is very limited. If you need any additional information about my system in order to help me figure this out, please let me know in the comments, and I will append it to the question. My only other lead as to the culprit here is Wordpress, which we have installed on this server. Here are the details: Wordpress 3.0.3 with the following plugins installed and activated: Addmarx - Bookmark/Share/Email Dropdown, Akismet, All in One SEO Pack, Animated Banners, Automatically publish highlights of any website, directly to your Blog, Broken Link Checker, CMS Dashboard, Collapsing Categories, Status Updater, SubHeading, Ultimate Google Analytics, VastSubCat, WP-CMS Post Control, and WP Super Cache

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• A router that supports connecting with 2 different wifi networks

  - by Allan Deamon

  I Have the following setup in one place: We have a small local ISP through wireless. I have a external parabolic antenna, connected to a external usb wifi radio, connected through USB to a desktop old PC. The pc connects do the ISP wiki network, then do a Dial Up (PPPoE) connection through the this wifi setup. This will expand with others mobiles devices to be used. When I need, I take my home wireless router and connect though Ethernet in the PC, which is shares the internet. The problem is that the PC must be always ON and working. I would like to buy a wireless router which could be an AP to the mobile devices, notebooks, etc, as also could connect to the ISP Wifi/PPPoE network. So, this device must: Have one radio with detachable antenna to connect to the external antenna. It must connect as client to a network and then dial up the PPP Have another radio serving as AP (infrastructure) to the local place This can't be very expensive. I found a candidate: ( http://www.tp-link.com/en/products/details/?categoryid=1682&model=TL-WR2543ND ) It have 3 deatachable antennas, working with dual band. Officially, his firmware doesn't support it. My supposition: If internally there is 3 or 2 distinct wlan ports (like wlan0, wlan1), and there is support, i could use a OpenWRT, DD-WRT or Tomato to make this works. It also have 1 USB port, which I cold use to connect my actual USB Wifi card on it instead to the old PC. Another alternative, is a router that can do this out of box, with the original firmware. But I don't think this is a easy thing to find.

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• Nginx: Disallow index.html in URL

  - by Martin Vilcans

  We're generating a site consisting of only static files (using Assemble). Having the .html extension on URLs looks so nineties, so we generate every static HTML file in its own directory and call it index.html. For example, the url http://www.example.com/foo/bar/ is in the file /var/www/foo/bar/index.html. This works well, but there is one small thing nagging me: Now there are two possible URLs to the same resource: http://www.example.com/foo/bar/ (slash URL) http://www.example.com/foo/bar/index.html (index.html URL) By accident someone may link to the index.html form of the URL, which is bad for SEO and looks ugly (remember the nineties?). Is it possible in Nginx to give a 404 error on the index.html URL, but serve the slash URL? I tried this: location ~ /index\.html$ { return 404; } But it seems that Nginx does some internal rewrite of the slash URL to the index.html URL, and then matches this location so we get a 404 even on the slash URL. Note that to catch mistakes, we want index.html URLs to be an error, not just redirect to the slash URL.

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• Ping with explicit next-hop selection (aka Monitoring multiple default gateways)

  - by Michuelnik

  I have a linux (debian) router with two internet connections (A) and (B). (A) is preferred, (B) is fallback. I want to monitor the internet connection (and not only the availability of the gateways!) and change the default route appropriately. If (A) is not providing internet, switch to (B) If (A) is providing internet again, switch back to (A). Only problem I have is in case (2). My routing table points towards a working internet so I cannot easily detect whether internet is working over link (A) again. I am search for a ping or traceroute (or other diagnosis-tool) which can select the next-hop explicitly. ping -r looks promising, but can only ping a host on the lan. (It only has to write another destination address in the packet, damnit!) traceroute -g gateway looks even more promising and nearly does what I want - but sets source routing options which my next-hops deny. (Not within my administrative boundary...) I just want a $ping, that can: select a source interface (and address) select a next-hop on that interface ping any arbitrary ip address I could do evil trickery with policy-based routing but that would have production impact for all users. I would like to see a side-effect-free solution....

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• What could be wrong with my VLAN?

  - by Matt

  I've got a VLAN 10 setup as a management VLAN. The management VLAN comes off port 48 and links to another set of switches that do not support VLAN's so it was I believe set up as an untagged access port. In the past this was a different brand of switch and this worked fine. However, since changing to the HP V1910-48G series I can't seem to get this working. I must point out that as far as I'm aware it is wired up properly (I can't check this physically as I'm working remote and have asked the tech who's got access to double check for me). Now I don't have a huge amount of experience with VLAN environments but AFAIK this is right. I've set the port 48 (linked to the management switches) as an untagged port with PVID 10 and access link type. Is this all I'd need to do from a configuration perspective to ensure all devices connected to port 48 would end up being on VLAN 10 and not needing to tag their frames. i.e. the tag would be added by the switch before being forwarded.

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• esx5 debian VM vlan setup

  - by Kstro21

  i have a server with ESX5, have a switch with about 20 vlans, this is how setup the trunk port interface GigabitEthernet0/1/1 description ToOper port link-type trunk undo port trunk allow-pass vlan 1 port trunk allow-pass vlan 2 to 14 stp disable ntdp enable ndp enable bpdu enable then, i created a standar switch(sw1) using the vSphere Client, the VLAN ID is set to All (4095), i also created a VM with Debian 6, with a NIC connected to sw1, now, i want to configure this NIC for a selected group of vlans auto vlan10 iface vlan10 inet static address 11.10.1.0 netmask 255.255.255.224 mtu 1500 vlan_raw_device eth0 auto vlan14 iface vlan14 inet static address 11.10.1.65 netmask 255.255.255.248 mtu 1500 vlan_raw_device eth0 so, when i restart the network using /etc/init.d/networking restart, i got this error Reconfiguring network interfaces...SIOCSIFADDR: No such device vlan14: ERROR while getting interface flags: No such device SIOCSIFNETMASK: No such device SIOCSIFBRDADDR: No such device vlan14: ERROR while getting interface flags: No such device SIOCSIFMTU: No such device vlan14: ERROR while getting interface flags: No such device Failed to bring up vlan14. done. this is just part of the error, so, my questions is: is this possible?, i mean, what i'm trying to achieve using ESX Virtual Machines, VLANS, etc is this a Debian problem? can be solved? i've read about a file named z25_persistent-net.rules in Debian but it doesn't exist in my installation. in the In the vSphere Networking for ESX5 guide, you can read: If you enter 0 or leave the option blank, the port group can see only untagged (non-VLAN) traffic. If you enter 4095, the port group can see traffic on any VLAN while leaving the VLAN tags intact. So, in theory, it should work, right? Hope you can help me up with this one Thanks

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• Strange mysql problem moving website from Ubuntu server to Mac server

  - by evan

  I'm moving a website (php/mysql) from an Ubuntu server to a OSX 10.6 server. I've set up apache to run php scripts and setup the newest version of mysql on the mac. I just copied all of the php files and dumped/imported all of the mysql databases (including the mysql users database). When I visit the page being served on the Mac the page is able to connect to the database, but not query. Specifically this function mysql_error() is returning this error message NO SUCH FILE OR DIRECTORY The reason it's strange is that I'm able to change the php connection strings for mysql on the Ubuntu server so that it points to the Mac server and the page works correctly (so it seems mysql is correctly set up on the mac and definitely contains all of the users and tables it should). Thinking it was something to do with file permissions on the mac, I've changed all of the files 755 and it hasn't helped. Any ideas? Thanks!! UPDATE: I've found this error which I'm relatively certain is related to this problem in /var/log/apache2/error_log PHP Warning: mysql_query(): A link to the server could not be established

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• Equivalent of scp -l bandwidth_cap for .ssh/config?

  - by Mark Bennett

  Short form: You can limit the bandwidth the scp uses with the -l switch, you pass a number that's in kbits/sec. I'd rather set this in my .ssh/config file for certain names machines. What's the equivalent named setting for -l ? I haven't been able to find it. Followup question: Generally, not sure how to map back and forth between ssh command line options and config names, short of doing Google searches or manually comparing man pages on a case by case basis. Is there a table that directly equates the two? Longer form of first question, with context: I've started using ssh config quite a bit, especially now that I need to go through a proxy and do lots of port mappings. I even define the same machine more than once depending on what type of tunneling I need. However, when uploading a large file, it's difficult to do anything else on my machine. Even though I have more download bandwidth than up, I think that scp saturates the link so even my small requests can't reach the Internet. There's a fix for this, using the -l bandwidth command line switch for scp. scp -l 1000 bigfile.zip titan: I'd like to use this in my config instead, so I'd create an additional named entry called "titan-upload" and I'd use that as the target whenever I upload. So instead of: scp bigfile.zip titan: I'd say: scp bigfile.zip titan-upload Or even set different caps depending on where I am: scp bigfile.zip titan-upload-from-home vs. scp bigfile.zip titan-upload-from-work I'm generally on Mac and Linux.

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• Syntax error on line 494 of httpd.conf: Cannot load .../php5apache2_2.dll into server

  - by pikachu

  I have been learning PHP. I had installed Apache-server (not in a combination-suite like USBWebserver). Now I'm trying to put my sites on a portable stick, using USBWebserver. I already used that program before to carry MySQL databases with me (and Apache worked as well, cause I used the included PHPMyAdmin for managing the databases.), but now it doesn't work anymore. When I start the program, I keep having the text saying Apache is offline. I've tried to open Apache using the command line (don't know what that would do, but, it's just a try). I got an error message saying Syntax error on line 494 of C:/.../httpd.conf: Cannot load C:/.../php5apache2_2.dll into server: (The following is translated from Dutch) An initialization routine of the dynamic link library (dll-file) has failed. Line 494 says this: LoadModule php5_module "C:/Users/School/Downloads/USBWebserver v8_en/php/php5apache2_2.dll" My first Apache installation (its service) is not running. The ports are different. And I also uninstalled the service (using the httpd.exe -k uninstall command); What can be the problem? Thanks for help.

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• Where do vendors publish internal transfer rates of HDDs?

  - by red888

  So I've started to dig into storage fundamentals and found that in order to calculate the IOPS of a HDD you need to know the internal transfer rate of the drive (time it takes data to move from the platters to internal disk's cache). I went on newegg and even a few vendor sites and could not find this info published for any HDDs. Is it sometimes called something else? Take this link to a seagate HDD for instance. Nowhere do I see "internal transfer rate", but I do see something called "Sustained Data Rate OD"- is that the same thing? Just so you know where I'm getting this info (Book: "Information Storage and Management Storing, Managing..."): Consider an example with the following specifications provided for a disk: The average seek time is 5 ms in a random I/O environment; therefore, T = 5 ms. Disk rotation speed of 15,000 revolutions per minute or 250 revolutions per second — from which rotational latency (L) can be determined, which is one-half of the time taken for a full rotation or L = (0.5/250 rps expressed in ms). 40 MB/s internal data transfer rate, from which the internal transfer time (X) is derived based on the block size of the I/O — for example, an I/O with a block size of 32 KB; therefore X = 32 KB/40 MB. Consequently, the time taken by the I/O controller to serve an I/O of block size 32 KB is (TS) = 5 ms + (0.5/250) + 32 KB/40 MB = 7.8 ms. Therefore, the maximum number of I/Os serviced per second or IOPS is (1/TS) = 1/(7.8 × 10^-3) = 128 IOPS.

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• Varnish does not start properly (crashes after startup) with no error messages

  - by Matthew Savage

  I am running Varnish (2.0.4 from the Ubuntu unstable apt repository, though I have also used the standard repository) in a test environment (Virtual Machines) on Ubuntu 9.10, soon to be 10.04. When I have a working configuration and the server starts successfully it seems like everything is fine, however if, for whatever reason, I stop and then restart the varnish daemon it doesn't always startup properly, and there are no errors going into syslog or messages to indicate what might be wrong. If I run varnish in debug mode (-d) and issue start when prompted then 7 times out of time it will run, but occasionally it will just shut down 'silently'. My startup command is (the $1 allows for me to pass -d to the script this lives in): varnishd -a :80 $1 \ -T 127.0.0.1:6082 \ -s malloc,1GB \ -f /home/deploy/mysite.vcl \ -u deploy \ -g deploy \ -p obj_workspace=4096 \ -p sess_workspace=262144 \ -p listen_depth=2048 \ -p overflow_max=2000 \ -p ping_interval=2 \ -p log_hashstring=off \ -h classic,5000009 \ -p thread_pool_max=1000 \ -p lru_interval=60 \ -p esi_syntax=0x00000003 \ -p sess_timeout=10 \ -p thread_pools=1 \ -p thread_pool_min=100 \ -p shm_workspace=32768 \ -p thread_pool_add_delay=1 and the VCL looks like this: # nginx/passenger server, HTTP:81 backend default { .host = "127.0.0.1"; .port = "81"; } sub vcl_recv { # Don't cache the /useradmin or /admin path if (req.url ~ "^/(useradmin|admin|session|sessions|login|members|logout|forgot_password)") { pipe; } # If cache is 'regenerating' then allow for old cache to be served set req.grace = 2m; # Forward to cache lookup lookup; } # This should be obvious sub vcl_hit { deliver; } sub vcl_fetch { # See link #16, allow for old cache serving set obj.grace = 2m; if (req.url ~ "\.(png|gif|jpg|swf|css|js)$") { deliver; } remove obj.http.Set-Cookie; remove obj.http.Etag; set obj.http.Cache-Control = "no-cache"; set obj.ttl = 7d; deliver; } Any suggestions would be greatly appreciated, this is driving me absolutely crazy, especially because its such an inconsistent behaviour.

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