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• Windows Vista Wrong Certificate With SNI

  - by JamesArmes

  I'm setting up SNI on an apache server and I thought things were going well. I have two URLs from different domains that point at the same site. I have one virtual host setup for each with the appropriate certificate for each. One of the certificates is valid but the other is self-signed (waiting on GoDaddy for the real cert). If I test the different URLs in Firefox, Safari and Opera all works well. I get no errors for the URL with the valid certificate and I get a self-signed warning for the other. However, in Internet Explorer 8 and Google Chrome, both URLs return the valid certificate (even if its not valid for the specific site). So for the one site, I get a valid certificate. For the other, I get a warning about the cert being for a different site. I tried switching the order of the vhosts and it made no difference. I know that Chrome and IE both use Window's HTTP stack so I understand why the behavior is the same for the two. What I don't understand is why I'm seeing this behavior.

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• Removing extended partition without deleting logical in it

  - by HisDudeness

  I'm running a Linux-based laptop, and in order to multi-boot several distros in it, I created an extended partition which contains a bunch of logical ones with GParted. Now, after quite a long time with this setup, I've changed my mind because of the consequent lack of storing space for my data partition. Now I want to keep one distro alone like it's normal, and eventually have some other operating systems stored in external supports to plug in and use if I want. Obviously, also this partition I want to keep (and to enlarge a little too) is just a logical inside the extended I want to keep. For what concerns the number I'm ok, meaning I currently have this big distro dedicated extended, the swap and the data partitions, so there's space for another primary before I delete the extended, but I don't know how to delete it without touching the logical in it, I don't want to reinstall the system losing all changes and settings, and I don't want to keep an extended partition for a logical alone. How can I do? Do I have to create a new primary, copy the logical content in it and then delete everything? Will the system boot and maintain exactly all the features it has now? Or is there a way to convert an extended into a primary once it contains just one logical? Or can I directly move a logical out of an extended turning it into a primary? Or, again, am I screwed?

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• Why is .htaccess not allowed in a directory but is allowed in another?

  - by John Isaacks

  I have apache2 installed on ubuntu 10.4 inside my var/www/ directory [amung others] I have a cakephp and a dvdcatalog directories. Each of which have CakePHP 1.3 installed. I can access them both via localhost/cakephp and localhost/dvdcatalog But the dvdcatalog shows up with no css styling. They both have these files: /var/www/cakephp/app/webroot/css/cake.generic.css /var/www/dvdcatalog/app/webroot/css/cake.generic.css But when I go to http://localhost/cakephp/css/cake.generic.css it sees the file but it does not see the file when I go to http://localhost/dvdcatalog/css/cake.generic.css I think this means the cakephp folder is able to use .htaccess and the dvdcatalog is not. I setup the cakephp directory last month when I was following in the blog tutorial. I am setting up the dvdcatalog directory now for a different tutorial. So I am not sure if I am missing a step. in my /etc/apache2/apache2.conf file I have this: <Directory "/var/www/*"> Order allow,deny Allow from all AllowOverride All </Directory> Which I thought gave .htaccesss to all. Does anyone have any ideas what the problem is?

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• SQL Server Installation: Is it 32 or 64 bit?

  - by CapBBeard

  Hi, Recently I was performing an OS upgrade on one of our DB servers, moving from Server 2003 to Server 2008. The DBMS is SQL Server 2005. While reinstalling SQL on the new Windows installation, I went to another of our DB servers to verify a couple of settings. Now, I always thought this second server was Server 2003 x64 + SQL 2005 x64 (from what I'd been told), but I now have my doubts about this. I now suspect that it is in fact only 32 bit SQL, however I'd like to verify this. Here's some details: The OS is definitely 64 bit. xp_msver shows Platform as NT INTEL X86 SELECT @@VERSION shows Microsoft SQL Server 2005 - 9.00.4035.00 (Intel X86)... However sqlservr.exe is not shown with '* 32' in taskmgr, does anyone know why this is the case, if it is in fact 32 bit as claimed? Despite this, it does seem to be running out of the x86 program files folder. If I do the same checks on a confirmed 64 bit installation, it does give back the expected 64 bit readings, which can only prove that this server in question is only running in 32 bit. Now, that being the case, the question arises about how much memory this '32 bit' install can use. Task manager reports about 3.5GB memory usage for sqlservr.exe (The server has 16GB physical). I suspect that AWE has not been configured at all, and therefore the server will be significantly under-utilised (remembering that the OS is 64 bit) if SQL is simply using a 32bit address space. Is this assumption correct? I feel the server should have SQL reinstalled as 64 bit in order to fully utilise the hardware platform, however it is currently heavily in production; this will be no easy task. I suspect we may just have to configure AWE correctly and let it be for the time being (Unless this is a bad idea?). I apologise that this question is a little vague/lost; I'm no SQL expert, just trying to get a handle on what's going on here.

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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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• How to convert JPEG JFIF files to JPEG Exif format?

  - by tigrou

  I recently put the SD card of my camera in a Windows 7 PC and start browsing pictures on it. I noticed some were not aligned correctly and use rotate feature included in Windows Photo Viewer in order to view them as I wanted. What I didn't know is that when rotate feature is used, it also overwrite the picture when pressing next or previous button resulting in a possible loss of quality (which is in my opinion a bad idea, app should at least warn user of what will happened when using such a feature). After that, I re-inserted the SD card back in my camera and bad surprise happened : the rotated picture could not be previewed anymore. Instead, i got a black screen saying "Incompatible JPEG format". Other files (untouched) are still working ok. To try to understand what happened I opened a JPEG file from camera and one generated on windows 7 in a hex editor. Here is the difference : The camera JPEG files have a Exif tag in them (with 0xE1 in header). Other JPEG files (Windows 7) have first a JFIF tag in it, followed by a Exif tag (with 0xE0 in header). So if i understand it well, both are JPEG files, but using a different internal format. Here is my question : is it possible (using some tool) to convert JFIF files to Exif format ? I understand that original camera files have been reencoded and thus lose some quality (getting originals back is impossible). What i want know if convert them from JFIF back to Exif (without a second loss of quality if possible...)

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• Difficult to point-and-click target with Apple Magic Trackpad?

  - by Andrew Swift

  My Magic Trackpad is great for most things involving dragging and gestures, but for simple point-and-click use it is starting to get really annoying. For example, my bank has a numeric code that I need to enter from a visual grid on the screen, by clicking on the six numbers in order. To do this is quite difficult with the Magic Trackpad. Idea 1: it is because when you start dragging on the touchpad, there is a brief delay before the mouse starts to move. The delay might be enough to screw up my anticipation of where the cursor is going to go. Idea 2: it may have to do with the cursor acceleration. If I move it a little, the cursor moves a little. If I move it a lot, it goes much faster. I have tried various settings in the preference pane, and although the cursor does move more or less quickly, it doesn't seem any more or less easy to hit a given target. As I am writing this post, I tried a brief experiment -- I chose a spot on the page (the bracket in the superuser logo) and tried to move the cursor there in one quick movement. It's extremely difficult, even though I've been using Macs and touchpads since 1999. There is something about the behavior of the trackpad that is making it impossible for me to learn how to accurately predict where the cursor will end up. Does anyone else have this problem?

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• vSphere - datastore falling off a host

  - by Chadddada

  Recently we have been running the vCheck powershell script daily in order to help in monitoring our vSphere ESX 4.0 environment. One of the oddities that we have been seeing is that some of the datastores on the SAN don't always show up on every host. Our hosts are connected redundantly, via FC, to some brocade FC switches, which then connect via fiber to our EMC Ax4 SAN. While all the datastores are presented to each host we have, and they see them initially, they sometimes seem to fall off and are no longer visible. It easy enough to rescan for datastores and add them back to the hosts the hosts but this seems to be an error. Has anyone else seen this or know why it may be happening? Responses to questions: 1. Is it always the same ESX servers that lose their connection? – Scott Warren No this happens randomly on random hosts. If a VM is running on a particular host, of which the VM's disks are on a SAN datastore, then that datastore won't disappear. It seems to happen if a host doesn't touch a datastore for a bit and it just forgets about it.

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• Hyper-V with multiple physical networks

  - by Yaman

  I have Hyper-V on my laptop with a wireless and Ethernet card, sometimes I connect using wireless card, and sometimes using the Ethernet cable. I am trying to configure Hyper-v to work always with internet provided to virtual machine. I have tried to create 2 virtual switches, one external to the Wireless network card, and the other one external to the Ethernet card. What happens is that the wireless network creates a bridge object in the network and sharing center\Network connections of windows 8, while the Ethernet does not. Unfortunately, they do not work together as external, i have to set the connected one to external and the other one as external, I also have to go to the properties of the bridge and virtual Ethernet properties to uncheck and check some components like: Client for Microsoft Networks Deterministic Network Enhancer VMWare Bridge Protocol QoS Packet Scheduler File and Printer Sharing for Microsoft Networks In order to make things work. Sometimes I keep the wireless network switch external, and go to another location (another wireless network), and it disconnects, i have to reconfigure the switches. Is there a way to do the configuration once and remain working wherever I connect, whether its Wireless or Ethernet and on any network with DHCP?

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• How do I prevent my ASP .NET site from continually prompting for user credentials?

  - by gilles27

  I'm trying to get an ASP .NET website up and running on IIS6. The site will run in its own application pool, and uses Windows authentication, with anonymous access turned off. When I run the app pool under NETWORK SERVICE, everything works fine. However we need the app pool to run under a different account, because this account needs some extra privileges (we are printing Word documents). This new account is a member of the local users group, and the IIS_WPG group. It has also been granted the "Log on as a service right". When I browse to the site I am prompted for credentials, not once, but several times. When the page finally loads it looks wrong because the style sheets have not been applied. My suspicion is that I am being prompted once for each file (e.g. all the images, styles and script files) the browser requests, and that for some reason the website is unable to validate those credentials in order to serve the files back. If I allow anonymous access the page loads fine - we don't want to allow it but I mention it in case it offers any further clues. My theory is that perhaps the account the app pool runs under needs permissions to validate domain credentials? If that is so, how do I enable this?

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• How to change mount to grant user write permissions?

  - by nals

  I am on TomatoUSB, and using the feature to have a NAS. The only way I can write to the Samba share is if I force root: [global] interfaces = 127.0.0.1, 192.168.1.1/24 bind interfaces only = no workgroup = WORKGROUP netbios name = TOMATO security = share wins support = yes name resolve order = wins lmhosts hosts bcast guest account = nobody [Public] path = /mnt/sda2 read only = no public = yes only guest = yes guest ok = yes browseable = yes comment = Network share force user = root writeable = yes I dont really like the idea having to use root to allow write access to my share. I have a samba account created already named nobody to allow access to the share. However every time I try to write I get access denied error. fstab: /dev/sda2 /mnt/sda2 vfat defaults 0 0 Further more every time I try to chmod 777 /tmp/mnt/sda2 the permissions are not changed, and no error is produced. They stay 755. drwxr-xr-x 2 root root 4096 Jun 4 01:49 sda2 Basically; how can I give the user nobody write permissions to my mount? dev name: /dev/sda2 dev mount: /tmp/mnt/sda2

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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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• nginx doesn't find the directory but apache does

  - by Jack Spairow

  I use apache as the backend server and nginx on the frontend. Apache listens to port 8080 and nginx to port 80. What I do is have the root point to the public folder foreach virtualhost: <VirtualHost *:8080> ServerAdmin webmaster@localhost ServerName site.com ServerAlias site.com *.site.com DocumentRoot /var/www/site.com/public <Directory /> Options FollowSymLinks AllowOverride None </Directory> <Directory /var/www/site.com/public/> Options Indexes FollowSymLinks MultiViews AllowOverride All Order allow,deny allow from all </Directory> </VirtualHost> And here's the nginx config: server { listen 80; access_log /var/log/nginx.access.log; error_log /var/log/nginx.error.log; root /var/www/site.com/public; index index.php index.html; server_name site.com *.site.com; location / { location / { proxy_set_header X-Real-IP $remote_addr; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; proxy_set_header Host $host; proxy_pass http://127.0.0.1:8080; proxy_cache one; proxy_cache_use_stale error timeout invalid_header updating; proxy_cache_key $scheme$host$request_uri; proxy_cache_valid 200 301 302 20m; proxy_cache_valid 404 1m; proxy_cache_valid any 15m; } } location ~ /\.(ht|git) { deny all; } } The problem is Apache resolves the domain just fine (site.com:8080), but nginx shows instead a 502 Bad Gateway (site.com:80). I tried looking at the error_log and access_log but I can't find any hint for why can't nginx work. EDIT: The problem was I wasn't able to include that isolated config for nginx.

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• PowerPoint 2007 slides are only partially converted to PDF since SP3

  - by Tim Pietzcker

  EDIT: Microsoft support has confirmed that it's a bug with PowerPoint 2007 SP3. I have recently encountered a problem with the "Save as PDF/XPS" add-in for PowerPoint 2007. When I use "Save as PDF/XPS" to create a PDF version of my presentation, some slides are only partially included in the resulting PDF file. For example, this: (download the PPTX file here) is reduced to this (in Adobe Reader X or Acrobat Pro X (both 10.1.1)): (download the PDF file here) So far, I have only encountered this with slides that contain animation elements, but which part of the elements remain in the PDF version appears not to have anything to do with the order in which the animated elements appear, so that might just be a coincidence. Update: The problem persists even if I "un-animate" the slides (removing the animation but leaving the previously animated elements intact). When viewing the affected slides in Acrobat Reader, it sometimes complains about the file containing invalid elements, and that I should complain to whoever generated the PDF file... Update 2: I have just installed Office 2007 on a new Windows 7 x64 PC. With the original Office version (12.0.4518.1014 MSO 12.0.6562.5003), a correct PDF file is generated. After installation of SP3 (12.0.6606.1000 SP3 MSO 12.0.6607.1000) a corrupt PDF file is generated. Today's Microsoft Updates (to PowerPoint version 12.0.6654.5000) haven't changed anything, by the way. Update 3: I have opened a tech support incident with Microsoft. They have confirmed the "limitation", as they called it, and it is indeed limited to 2007 SP 3 only. They are going to pass it on to the developers but they can't say when or even if a fix would be forthcoming, so I guess I'll upgrade to 2010...

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• How can I redirect/forward all the UDP/TCP traffic on one interface to another interface in OpenWrt

  - by Sina Sou

  I am new to networking and I have a measurement device (D) that periodically sends all its readings over few UDP multicast sockets (with different multicast IP addresses and different port numbers). That device even listens to a TCP socket simultaneously to modify its configuration on port 7234. Since the device has just a Ethernet interface for communication and I want to make it work wireless, I decided to use a very small wireless open-wrt based router that attaches to the device (D) and redirect/forward all the network traffic(Both UDP/TCP) to the router wireless interface. In order to simplify the problem assume that the Device (D) establishes following sockets (at the same time) UM_SOCK1: UDP mcast socket on 239.1.2.3 port# 50620 UM_SOCK2: UDP mcast socket on 239.1.2.4 port# 50640 TC_SOCK3: TCP DHCP/STATIC ip address 192.168.1.200 port 7234 And (D) is connected to Open-Wrt router (R) via interface en01 (Ethernet) the router has it own wireless interface on (wlan0) I want all the traffic from interface pass through wlan01 and vice versa (bi-directional) en01 <---- wlan01 What would be the minimum iptables or ... commands that I need to make this possible? Even I am wondering if traffic directing can be made easier like if the direction is not going to be based on IP addresses(not desired if the device is connected via DHCP) I would rather redirection to be Interface(en0) based or on MAC address (The best solution since my device has unique MAC address)? Thanks

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• Fast extraction of a time range from syslog logfile?

  - by mike

  I've got a logfile in the standard syslog format. It looks like this, except with hundreds of lines per second: Jan 11 07:48:46 blahblahblah... Jan 11 07:49:00 blahblahblah... Jan 11 07:50:13 blahblahblah... Jan 11 07:51:22 blahblahblah... Jan 11 07:58:04 blahblahblah... It doesn't roll at exactly midnight, but it'll never have more than two days in it. I often have to extract a timeslice from this file. I'd like to write a general-purpose script for this, that I can call like: $ timegrep 22:30-02:00 /logs/something.log ...and have it pull out the lines from 22:30, onward across the midnight boundary, until 2am the next day. There are a few caveats: I don't want to have to bother typing the date(s) on the command line, just the times. The program should be smart enough to figure them out. The log date format doesn't include the year, so it should guess based on the current year, but nonetheless do the right thing around New Year's Day. I want it to be fast -- it should use the fact that the lines are in order to seek around in the file and use a binary search. Before I spend a bunch of time writing this, does it already exist?

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• CentOS: Init scripts failing to start for some unknown reason

  - by user705142

  I'm running CentOS 6.2 - I've just migrated some applications over to a failover server, and copied their init scripts into /etc/init.d. I've made them executable, added them to chkconfig, with chkconfig -add, set their levels, made sure they're residing in /etc/rc.d/ - made sure I can execute them from rc2.d etc. The permissions are the same on both servers. They're also running in the same order as on the primary server Yet on reboot they don't start. Any ideas? The offenders are these: jetty 0:off 1:off 2:on 3:on 4:on 5:on 6:off smart 0:off 1:off 2:on 3:on 4:on 5:on 6:off /etc/init.d: -rwxr-xr-x. 1 root root 14456 Mar 13 20:21 jetty -rwxrwxrwx. 1 root root 5829 Mar 29 09:58 smart /etc/rc.d/rc3.d lrwxrwxrwx. 1 root root 15 Mar 29 19:21 S99jetty -> ../init.d/jetty lrwxrwxrwx. 1 root root 11 Mar 26 17:12 S99local -> ../rc.local lrwxrwxrwx. 1 root root 15 Mar 29 19:21 S99smart -> ../init.d/smart I've checked, and I'm in run level 3. I've checked their logs, and there's no indication that that they've been started. I can start them manually easily - and other services are starting normally. I'm completely out of ideas really.

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• domain user disabling screensaver

  - by RASG

  I have the following situation: Due to security reasons the screensaver is activated after 10 minutes, and immediately locks the screen. There are GPOs preventing the user from changing the screensaver parameters and the background image. In order to bypass the background policy, some users are using bginfo The problem is that for some reason now the screensaver doesn't work anymore. The settings are still the same (10 minutes; locked to the user) and comparing snapshots of the registry before and after executing bginfo doesn't show any significant modification. Any hints? EDIT 1: Ok, i figured whats going on, but now i have another question. bginfo refreshes the user settings by reading HKEY_CURRENT_USER\Control Panel\Desktop, which has ScreenSaveActive. If the user set it to 0, disables the screensaver. Why isnt HKEY_CURRENT_USER\Software\Policies\Microsoft\Windows\Control Panel\Desktop, which sets ScreenSaveActive to 1, being enforced? or if it is being enforced, where is bginfo storing the value 0, and how can it bypass the policy? EDIT 2: I also discovered that after setting any value to HKEY_CURRENT_USER\Control Panel\Desktop\ScreenSaveActive, it can be deleted and the last value will remain active. For some reason HKEY_CURRENT_USER\Software\Policies\Microsoft\Windows\Control Panel\Desktop\ScreenSaveActive value is not being enforced to the user.

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• How do I restore to a delta file (disk) on Vmware ESXi

  - by Oscar

  Using VMware Server ESXi (freebie version) I have a Virtual Machine (win 2k3 r2 server). When I first provisioned it I took a snapshot of it. I recently tried to clone the primary drive using my standard hardware-based method to grow a windows disk. (using knoppix, clone drive to a new drive, make it bootable, then I intended to extend the partition via diskpart from within windows). This process failed; I tried setting the cloned drive (via the vmware gui) to replace the original drive, boot and be done. This didn't work out so well. The machine never booted. I checked the boot order, the disk location and all the basics I usually do. As a failsafe, I then tried changing all the settings back so the machine would boot to the original drive and I could figure out (as I eventually did) a better way of growing the disk. However when I powered on the machine with the original drive, it reverted back to that initial snapshot I created; It lost all the changes since. I looked in the file system and found a few files, I think the keyfile here is one named "delta" and I'm assuming that's the disk I want, but I can't find a way to have the Virtual Machine actually use that drive/file. It isn't available to add when I go to add an existing drive. Do I need to somehow commit that delta to the original drive and then boot from it again? Can you point me in the right direction? I've since discovered the proper way of growing drives using "vmkfstools" but I need to get back to the original state of the machine to try this out. Any help would be greatly appreciated.

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• RPC Server Unavailable on Hyper-V cluster when moving resources after the host adapter has failed

  - by Doug Luxem

  On a Windows 2008 R2 SP1 cluster running Hyper-V, a lost network connectivity on the primary host interface. The interface was rapidly flapping up and down, and this was later determined to be caused by a faulty switch port. As this was a clustered server, the host interface was not fault tolerant (seeing as how the whole server was fault tolerant), so connectivity to the host was going up and down. The Hyper-V guests were completely unaffected by the network outage as they used a dedicated trunk on the server separate from the host interface. Additionally, dedicated interfaces for the cluster and live migration networks were fine. In order to diagnose the server, I tried to move all resources (Hyper-V Guests) to other nodes through Failover Cluster Manager. These moves failed with an error RPC Server Unavailable. The only way to move resources was by shutting down the guests, stopping the cluster service on the Node A, allowing other nodes to take ownership of the resources, and restarting the guests. A few other notes: All nodes have Client for MS Networks and File & Printer Sharing enabled on the Cluster and LM networks. Node A was accessible over cluster and LM networks from other nodes (these are private, cluster-only networks); pingable, CIFs, etc. Accessing \\NODEA is done over the Host adapters, as you would expect in this case and is the reason for the RPC Server Unavailable error with that adapter being down. My questions here are - Is there a way to still use Live Migration in a failure scenario such as this to prevent shutting down the Hyper-V guests? How can the network be reconfigured in the future so that the cluster service attempts to use the cluster and/or live migration networks to issue the RPC requests?

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• Ubuntu and Windows and Separate HDs, oh my!

  - by LuxuryMode

  Need some major help. Running a Dell XPS/Dimension 630i. It came with "SATA 2 RAID 0 With Dual 500GB Hard Drives." I have installed a new, third non-raided drive and installed Ubuntu on it. So now I have Windows on the original hard drive and Ubuntu Linux on the new HD. When I get to the boot menu where I can select an OS, if I select windows I get an error: "No such drive, no such disk." Also, strangely in the first place, in order to even get to the bootloader menu I have had to disable ALL ports under the RAID config. Unless I do this, I will just get to a never-ending blinking cursor. I have tried every conceivable CMOS config and nothing else works. Tried setting port 3 (the new HD w/ Ubuntu) to first hard disk boot priority. Tried disabling all other ports and enabling the Ubuntu HD port and vice versa. Here's a pic of the error I get when I try to boot to Windows: http://imgur.com/TJ1mS. Also, please note that I can actually access all files from the raided Windows drive through Ubuntu. (Someone suggested just reinstalling windows from installation CD. Agree?)

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• Puzzling TCP performance over 3G / UMTS

  - by lemonsqueeze

  I'm using 3G as my primary internet connection, and TCP over this thing is getting more puzzling every day. For example: Downloading from kernel.org is crazy fast: $wget http://www.kernel.org/pub/linux/kernel/v3.0/linux-3.6.8.tar.bz2 increases to ~500kB/s after a few secs ! Some servers are incredibly slow, for instance www.graphic-pc.com:Same thing, downloading a big file with wget it starts at ~30kB/s for a split second, then collapses to 5-10k or even worse. Web browsing is decent but somewhat unreliable. Randomly, a page will take really long to load or even fail to load, but a reload can succeed almost immediately. Now, by chance i started playing with OpenVPN over UDP on top of the 3G connection, and OMG suddenly everything's extremely fast !Same www.graphic-pc.com now shoots at 100-200kB/s ! What's going on here ??? How come it is so much better with the VPN than without ?? And why does graphic-pc.com crawl when kernel.org flies ?Something to do with my tcp stack (or the server), or some buggy router in between ?? Notes: Setup is laptop running Ubuntu Lucid and a Huawei 3G dongle (So direct pppd connection). I can reproduce this pretty much any time during the day and I'm not moving, so it's clearly not cell environment or internet congestion. (although kernel.org without VPN sometimes does worse in the evening, 60kB or so - but still 500kB with VPN !) For 2) wireshark shows retransmitted packets, dup ack's, even out of order sometimes. I've tried playing with different /proc/sys/net/ipv4 parameters (tcp_rmem, window_scaling, tcp_congestion...) doesn't seem to make a difference. Update: Tried under windows 7 (no VPN) with some interesting results: tcp settings : default tcp_optimizer kernel.org : 10 kB/s 20 kB/s graphic-pc.com: 8 kB/s 70 kB/s ! tcp_optimizer turned on ctcp among other things. Have to check what os graphic-pc.com is running, my bet is linux's tcp_westwood and ms ctcp don't mix well here...

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• 403 Error when accessing vhost directive

  - by Ortix92

  I'm having some troubles with setting up my webserver (Centos 5.8). It's a brand new server and I'm trying to set a vhost to the following dir: /home/exo/public_html However whenever I restart httpd I get the following warning: Code: Starting httpd: Warning: DocumentRoot [/home/exo/public_html] does not exist Yes the directory does exist. So whenever I visit the domain exo-l.com it gives me a 403 error. This is my config file (I put this inside my httpd.conf because the files in conf.d were not included for some reason. Or at least my newly created vhost conf file, but that has 0 priority for now) <VirtualHost *:80> DocumentRoot /home/exo/public_html ServerName www.exo-l.com ServerAlias exo-l.com <Directory /home/exo/public_html> Order allow,deny Allow from all </Directory> </VirtualHost I'm completely clueless because this should work as far as I know. httpd is being run as apache:apache i tried chowning the public_html directory (also recursively) to exo:apache, apache:apache, root:root with no success. chmod 777 doesn't do anything either. a tail from the log: [Sat Oct 13 15:10:04 2012] [error] [client 82.***.***.61] (13)Permission denied: access to / denied [Sat Oct 13 15:10:04 2012] [error] [client 82.***.***.61] (13)Permission denied: access to / denied I also found something about selinux and that disabling it might help, but do I really want to do that?

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• Nginx + WordPress + HHVM: Why isn't Batcache working? Would Varnish help even more?

  - by javipas

  I've heard great things about HHVM, so I've setup a copy of WordPress blog (on another domain) with Nginx (with the Pagespeed module) and HHVM. Right now the benefits are obvious: on the same config, load times are between two and three times faster. I'm trying to speed up things a little bit, and I've also installed Memcached and Batcache. I've installed the memcached package, copied object-cache.php (Pastebin) onto the root folder of the WordPress blog, and after that I've installed the Batcache plugin and copied the advanced-cache.php (Pastebin) file onto the wp-content folder. Also, I've included the line define('WP_CACHE', true); in the wp-config.php file. It seems it doesn't work, though. If I quickly reload the page several times Batcache should show the cached page, but it doesn't. It's easy to check that by reloading (Cmd+R on Chrome on OS X) the page several times and then viewing the page's code. Under the <head> section I should see some batcache stats, but they aren't there. I wonder if someone could give me some hint on this. On a side note, I don't know if I could add some other component in order to help the performance be even better. I'm thing about Varnish, but I'm not sure if it's just useless and it's just another way to the same I'm currently doing. Any other component there? (I'll test CDN for images, minifying js, etc and some other tricks as well, but I'm talking from the server perspective).

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• Empty rewrite.log on Windows, RewriteLogLevel is in httpd.conf

  - by ripper234

  I am using mod_rewrite on Apache 2.2, Windows 7, and it is working ... except I don't see any logging information. I added these lines to the end of my httpd.conf: RewriteLog "c:\wamp\logs\rewrite.log" RewriteLogLevel 9 The log file is created when Apache starts (so it's not a permission problem), but it remains empty. I thought there might be a conflicting RewriteLogLevel statement somewhere, but I checked and there isn't. What else could cause this? Could this be caused by Apache not flushing the log file? (I closed it by hitting CTRL-C on the httpd.exe command ... this caused the access logs to be flushed to disk, but still nothing in rewrite.log) My (partial) httpd-vhosts.conf: <VirtualHost *:80> ServerAdmin webmaster@localhost ServerName my.domain.com DocumentRoot c:\wamp\www\folder <Directory c:\wamp\www\folder> Options -Indexes FollowSymLinks MultiViews AllowOverride None Order allow,deny allow from all <IfModule mod_rewrite.c> RewriteEngine On RewriteBase / RewriteRule . everything-redirects-to-this.php [L] </IfModule> </Directory> </VirtualHost>

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