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• Java in a browser on Ubuntu

  - by Peter

  So I am running an old version of Ubuntu and all of a sudden, my capabilities to run Java in a browser have stopped and it no longer executes properly. Someone else set this up for me, but I believe it's running icedtea plugin 6 and jre 6. What would be the best ways to troubleshoot this? I suppose I could try downloading icedtea 7 and jre 7 (sun or openjdK) and see if that works? Also, in general, is installing icedtea, installing a java runtime environment, and then symlinking something to the plugins directory of your browser the best way to get Java working on most Linux systems? Unfortunately, there are many guides all over the internet offering totally different solutions, but this is probably the most common I've seen (not sure how well it works). My main use is downloading an executing .jnlp files (browsers should open it automatically). Although, I've seen people using "javasw" to run the file outside of a browser. Is this something I could consider doing? I can't seem to find javasw packaged for my version of Ubuntu.

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• RAIDs with a lot of spindles - how to safely put to use the "wasted" space

  - by kubanczyk

  I have a fairly large number of RAID arrays (server controllers as well as midrange SAN storage) that all suffer from the same problem: barely enough spindles to keep the peak I/O performance, and tons of unused disk space. I guess it's a universal issue since vendors offer the smallest drives of 300 GB capacity but the random I/O performance hasn't really grown much since the time when the smallest drives were 36 GB. One example is a database that has 300 GB and needs random performance of 3200 IOPS, so it gets 16 disks (4800 GB minus 300 GB and we have 4.5 TB wasted space). Another common example are redo logs for a OLTP database that is sensitive in terms of response time. The redo logs get their own 300 GB mirror, but take 30 GB: 270 GB wasted. What I would like to see is a systematic approach for both Linux and Windows environment. How to set up the space so sysadmin team would be reminded about the risk of hindering the performance of the main db/app? Or, even better, to be protected from that risk? The typical situation that comes to my mind is "oh, I have this very large zip file, where do I uncompress it? Umm let's see the df -h and we figure something out in no time..." I don't put emphasis on strictness of the security (sysadmins are trusted to act in good faith), but on overall simplicity of the approach. For Linux, it would be great to have a filesystem customized to cap I/O rate to a very low level - is this possible?

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• Puppet: is it ok to "force" certname when you expect to shuffle nodes around?

  - by Luke404

  We all know (good example on SF) that Puppet hostname detection could be... fun. At our company (and I guess we're not alone at this) we usually pre-configure servers at our offices and test them before bringing the gear to a remote datacenter and rack them. Of course the reverse dns will change when doing that, even if we don't change the actual hostname of the system. We're slowly drafting our puppet setup and I'd like to be sure those moves won't create problems. My idea is to explicitly configure the desired full FQDN of the system as certname in puppet.conf at server provision time (before the very first puppet run). My process would look something like this: basic o.s. installation basic network configuration, enough to reach the internet and resolve dns install puppet and set up certname start puppet and let him manage the whole configuration test, fix problems in config (via puppet), re-test, and so on... manually stop puppet set up new network configuration for the datacenter network move the machine to DC turn it on puppet should automatically start and keep on doing its job The process is supported by detecting the environment in puppet's manifests (eg. based on subnet, like they do at Wikimedia) and modify configuration as needed (eg. resolv.conf contents appropriate for each network). Each node's certname will never change for the whole system life cycle. Is there any problem with this approach? Could it be improved?

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• Hostname vs webpage domain.

  - by Mark

  Hi All, Im just starting to look at deploying a webpage and get into the joy of DNS etc. And im wondering how you set up multiple web-servers all with thier own hostnames/public IP addresses, and yet have them serve up a webpage from one domain. For example, lets say you have a website example.com, and an A record in DNS that points at it's IP address of 1.2.3.4 . You want to have two servers, prod1 and prod2 with some kind of load balancer in front of them for fail over reasons. The way I see it you would want to have the hostnames of these servers as prod1.example.com and prod2.example.com and perhaps loadb.example.com. How would you set up the DNS so this would all work. ie you could ssh to any of the server domains, prod1.example.com, prod2.example.com or loadb.example.com and also just use the www.example.com url to go to the website. And would all these server names be resolvable from the public internet and is that safe? This would be a linux environment, for arguments sake ubuntu, a django framework dynamic website, running in apache 2.2 Cheers Mark

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• Apache on CentOS 5.9 VM serves my optimized images corrupted (but my Mac doesn't)

  - by Robert K

  I'm using a Vagrant VM to mirror the client's environment as closely as I can. As part of our build process we do no optimization of assets early on; that comes as we're ready to take a site live. Needless to say, this issue is beginning to worry me as we need to take the site live very soon. I use ImageOptim to automate optimization of image assets, which runs a whole series of tools (Zopfli, PNGOUT, OptiPNG, AdvPNG, PNGCrush). I always set the optimizations to their maximum setting. After optimization, my PNGs start looking like this: What's weird is, if I serve the same file through my Mac's copy of Apache, not through Vagrant, the image loads fine. In fact, the only time it's ever corrupt like this is when the image is served from the Vagrant VM and its install of Drupal. All optimized JPEGs display only the first ~20% of the image. And PNGs, depending on the image, may show either a portion or the "progressive"-style corruption below. The browser itself makes no difference, the same browser will serve an uncorrupted image from my Mac's Apache instance and a corrupt image from the VM. When I disable all PNG optimizations except PNGCrush, and the removal of the PNG metadata, the image is served corrupted. I'm optimizing JPEG images with JPEGmini. The server is running CentOS 5.9, Apache 2.2.3-85, PHP 5.3.3, and Drupal 7. As best as I can tell the error lies somewhere within the VM, either with Apache or with (perhaps) the network stack. Seems like the tools that optimize the compression of the PNGs and JPEGs are what trigger this error. I've already determined that the .htaccess file isn't interfering with how the images load. What should I try to troubleshoot this?

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• Microphone array support in Windows. Info on performance and compatible hardware?

  - by exinocactus

  It is officially claimed by Microsoft (Audio Device Technologies for Windows), that Windows Vista has an integrated system-level support of microphone arrays for improved sound capturing by isolating a sound source in target direction and rejecting ambient noise and reverberation. In more technical terms, an implementation of an adaptive beamformer. Theoretically, microphone arrays with 2-4 mics can substantially improve SNR under some conditions like speaker in front of the laptop in noisy environment (airport, cafe). Surprisingly, though, I find very little information about commercially-available products supporting these new features. I mean products like portable usb micropone arrays or laptops or flat screens with integrated mic arrays. I could only find info about two laptop models having "noise cancelling digital array microphone". These are Dell Latitude and Eee PC 1008P-KR. Now my questions: Do you have any experience with the Windows beamformer implementation? For instance, in the above mentioned laptops. How well does it work? Are there any tests results available in the net or in print (papers?)? Do you know about other microphone array hardware? What could be the reason why mic array technology didn't get sucess Is there mic arrays support in 'Windows 7'?

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• crontab not running on VirtualBox unless I'm logged in

  - by Mike

  I am running Ubuntu Server 9.04 in VirtualBox on my work PC as a development environment. I have some scripts that I've put in my user's crontab that run throughout the day while I'm SSHed into the VM. Last night, I closed PuTTy and all of my other running applications (except for VirtualBox and the VM) and went home. I came back this morning to discover that my cron jobs didn't run at all, yet when I SSHed into the VM, the next scheduled job ran. I set the schedule to 5min to test, disconnected again, and the jobs stopped running on schedule. They seem to only run if I'm logged in to the machine. Obviously, I want them to run on schedule even if I'm not logged in to the VM, otherwise there's no point. Is there something I've failed to configure correctly? New Information: There are now 3 entries in /var/log/cron.log saying the following "Mount of private directory return code [256]"... the entries correspond to when the cron job is supposed to run. I thought they are supposed to run as my userid? Why would my own userid be unable to run a script in my home directory?

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• How to start and stop a systemd unit with another?

  - by Andy Shinn

  I am using CoreOS to schedule systemd units with fleet. I have two units (firehose.service and firehose-announce.service. I am trying to get the firehose-announce.service to start and stop along with the firehose.service. Here is the unit file for firehose-announce.service: [Unit] Description=Firehose etcd announcer BindsTo=firehose@%i.service After=firehose@%i.service Requires=firehose@%i.service [Service] EnvironmentFile=/etc/environment TimeoutStartSec=30s ExecStartPre=/bin/sh -c 'sleep 1' ExecStart=/bin/sh -c "port=$(docker inspect -f '{{range $i, $e := .NetworkSettings.Ports }}{{$p := index $e 0}}{{$p.HostPort}}{{end}}' firehose-%i); echo -n \"Adding socket $COREOS_PRIVATE_IPV4:$port/tcp to /firehose/upstream/firehose-%i\"; while netstat -lnt | grep :$port >/dev/null; do etcdctl set /firehose/upstream/firehose-%i $COREOS_PRIVATE_IPV4:$port --ttl 300 >/dev/null; sleep 200; done" RestartSec=30s Restart=on-failure [X-Fleet] X-ConditionMachineOf=firehose@%i.service I am trying to use BindsTo with the notion that start and stop of firehose.service will also start or stop firehose-announce.service. But this never happens correctly. If firehose.service is stopped, then firehose-announce.service goes to failed state. But when I start firehose.service, the firehose-announce.service doesn't start up. What am I doing wrong here?

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• Logging Remote Desktop to Servers via Logon Script or GPO or What?

  - by Nate Bross

  The objective here is to start a simple .NET application I've written which captures some environment variables (time, username, computername, etc) upon login. This .NET application subscribes to the Windows "User logout" event. Upon launch, the application captures the above variables, and creates a record in my database, upon logout (which I'm capturing) I update another field in the same record, with the logout time. The above is working exactly as I would like, when I launch the binary, it makes its initial log entry, then waits for the logout event and updates the same record. Restrictions, the .NET binary should be able to live on a share point (\server\share\myapp\v1) so I can update the application to (\server\share\myapp\v2) and simply update the GPO/Logon script. My initial thought was to use the \domaincontroller\sysvol\ directory to store the binary and then update all user accounts to include a call to my application. Can you see any flaws in this approach? My question is this: First, is there anything wrong with my idea above? Second, if so, what is the best way (through group policy or otherwise) to ensure this application launches whenever a session is started on a server?

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• Multi-partition USB stick

  - by nightcracker

  In my freelance job as "the dude that fixes your computer" I have an extremely handy tool, a bootable USB stick with Ubuntu LiveCD that allows me to recover and investigate in a known, working environment. Now, I want to reformat this USB stick and reinstall with Casper-RW persistance. I did this a few times before with a FAT-formatted USB stick. It was a horror. The USB drive corrupted constantly, by people accidently removing the USB stick, the computer not properly shutting down, ETC. Now what I want to create a multi-partition USB stick so I can put Ubuntu on a ext partition, but still be able to store some Windows stuff in it, by having a secondary FAT partition. However I read somewhere that Windows will only check the first partition on USB sticks, giving a problem with the first bootable linux partition. Is this possible on some way? EDIT Perhaps it wasn't clear what the problem is. The problem is that I read somewhere that Windows will only recognize the first partition on a USB stick. But I want two partitions, a ext partition and a FAT partition. No issues so far, but in order to be bootable the ext partition must be the first one!

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• SSH hangs when executing command remotely

  - by Serty Oan

  Client : OpenSSH_5.1p1 Debian-5ubuntu1 (Ubuntu 9.04) Server : OpenSSH_5.1p1 Debian-5 (Proxmox 2.6.24-7-pve) I use SSH to execute commands remotely on the server (module check_by_ssh of Nagios). But SSH hangs from time to time when trying to execute commands. I can log to the server via SSH but not executing a simple 'ls'. And it seems to block from all clients from the same IP address. Authentication is not the problem, may it be made by SSH keys or password. ssh -l root -p 2222 server.domain.tld 'ls' Here the client debug info debug1: Entering interactive session. debug2: callback start debug2: client_session2_setup: id 0 debug1: Sending environment. debug3: Ignored env ORBIT_SOCKETDIR *** skipping approx 40 env var ignored debug1: Sending command: ls debug2: channel 0: request exec confirm 1 It hangs there. Then after a random time, it works again (without doing anything). Killing all sshd process on the server seems to work too. It works from a Putty. I saw that some people had trouble like this due to ISP reverse DNS problem, but it does not seem to be the case here. It can work for hours and then not work for half an hour or so. What could explain this behaviour ?

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• Scanning to network share

  - by tking

  In our environment we have several printers with the scan to folder functionality set up. It worked pretty well. Long story short- I needed to reboot our file server one evening (the server whose $hares where all the scans go), upon on boot up I received a message stating the name of the file server (i.e AcmeFS1; Windows Server 2003) could not be used because there was a duplicate name on the network. I found that somehow another printer on the network was using the name of the file server. Weird - I know. People could no longer scan to their folders. I ran an nbtstat on the file server and found that the local netbios name table was empty. I renamed the offending printer and rebooted the file server once more. This time, no error, and once I ran nbtstat again, I found that correct name and domain in the local netbios name table. Problem is, scan to folder is still not working. I know this was working before I rebooted the file server the first time. Anyone have any idea what is going on and how to fix? Thanks. FIXED: Not sure why the reboot didnt fix it but I restarted the "Server" service on the file server and the problem went away.

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• Exchange 2010 SP2 database size

  - by Chad

  I have a single Exchange 2010 sp2 environment with 3 DB stores. I am trying to reduce the sizes by moving the mailboxes to a spare DB and then deleting the empty database. I cleaned up the users mailboxes to reduce the sizes and set the retention periods to 1 day each and waited several days before moving mailboxes. The databases are backing up fine and clearing logs files but when I move the mailboxes I noticed they were taking a long time, even though some were less than 100MB. When I checked the new database size it seems like the orginal mailbox size might be moving (1GB instead of 100MB). Exchange is showing the expected smaller mailbox sizes when I run get-mailbox statistics against the DB. So if I have 5 mailboxes 100MB each it is showing like 3GB instead of around 500MB, and no whitespace. I keep waiting thinking mailby the retention period is not expired yet but it is much longer than 1 day already. I am setting them both to 0 today to see if that works. What am I missing to get the combined mailbox sizes to match the DB size minus whitespace?

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• Confused with creating an ODBC connection, apparently I have two separate odbcad32.exe files?

  - by Hoser

  Alright, this is my first time working with this so forgive me if I'm a little confusing or vague. I have a server with Windows Server 2008 Standard without Hyper-v (6.0, Build 6002). I'm running a small website off this server and using a Microsoft Access database to store some information coming in through the website. I'm sure the PHP I have written to open the ODBC connection is correct as it has worked for me when I created this website in a testing environment on a laptop. My current issue now is that it seems like I have two different odbcad32.exe's, and one doesn't appear to have a driver for a .accdb file, and only a .mdb file. The other has a driver for both. The first one I speak of has a driver titled 'Driver do Microsoft Access (.mdb)', the second one has a driver titled 'Microsoft Access Driver (.mdb, .accdb)'. I access the first odbcad32.exe by going to C:\Windows\SysWOW64\odbcad32.exe, and then the one that seems to have the driver I need I go to Control Panel-Administrative Tools-Data Sources(ODBC) and simply create a new connection in the System DNS tab. Whenever I make changes to the one that I access through the Control Panel, I see no changes, however if I use the odbcad32.exe file in SysWOW64 I do get some changes in the errors that come back to me. The main difference I noticed is that when I set up an ODBC connection with the Control Panel method it said it simply couldn't find the ODBC connection, but when I made a .mdb connection in the SysWOW64 one (and pointed it to a .accdb file) it says Cannot open database '(unknown)'. It may not be a database that your application recognizes, or the file may be corrupt. Which makes it seem like it is this odbcad32.exe version in SySWOW64 that is being recognized as the 'correct' one. Is there any way to fix this? I've tried to be as thorough as possible but if I've been confusing or left anything out let me know.

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• Sudo won't execute command as another user

  - by TOdorus

  I'm trying to get a unicorn server to start when the server boots. I've created a shell script which works if I log as the ubuntu user and run /etc/init.d/unicorn start Shell script #!/bin/sh case "$1" in start) cd /home/ubuntu/projects/asbest/current/ unicorn_rails -c /home/ubuntu/projects/asbest/current/config/unicorn.rb -D -E production ;; stop) if ps aux | awk '{print $2 }' | grep `cat ~/projects/asbest/current/tmp/pids/unicorn.pid`> /dev/null; then kill `cat ~/projects/asbest/current/tmp/pids/uni$ ;; restart) $0 stop $0 start ;; esac When I rebooted the server I noticed that the unicorn server wasn't listening to a socket. Since I ran the code succesfully as the ubuntu user I modified the script to let it always use the ubuntu user via sudo. #!/bin/sh case "$1" in start) cd /home/ubuntu/projects/asbest/current/ sudo -u ubuntu unicorn_rails -c /home/ubuntu/projects/asbest/current/config/unicorn.rb -D -E production ;; stop) if ps aux | awk '{print $2 }' | grep `cat ~/projects/asbest/current/tmp/pids/unicorn.pid`> /dev/null; then sudo -u ubuntu kill `cat ~/projects/asbest/current/tmp/pids/uni$ ;; restart) $0 stop $0 start ;; esac After rebooting unicorn still wouldn't start, so I tried running the script from the command line. Now I get the following error sudo: unicorn_rails: command not found I've searched high and low to what could cause this, but I'm afraid I've tapped my limited understanding of Linux. From what I can understand is that although sudo should use the ubuntu user to execute the commands, it still uses the environment of the root user, which isn't configured to run ruby or unicorn. Does anybody have any experience with this?

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• How do I get Tomcat 7 to start up faster in Linux CentOS kernel version 2.6.18?

  - by user1786833

  I am experiencing a problem with slow start up times for Tomcat 7. I have done some testing by tweaking configuration parameters both on Linux CentOS kernel version 2.6.18 and on Windows 7 using this link as my primary guide: http://wiki.apache.org/tomcat/HowTo/FasterStartUp and managed only a modest improvement. The improvements seemed to result when I added metadata-complete="true" attribute to the element of my WEB-INF/web.xml file and when I added the names of almost all the jars we use for our application to the tomcat.util.scan.DefaultJarScanner.jarsToSkip property in conf/catalina.properties file. I've also used this JAVA_OPTS in the setenv.sh file: JAVA_OPTS="$JAVA_OPTS -server -Xms1536m -Xmx1536m -XX:MaxPermSize=256m -XX:NewRatio=2 -XX:+UseParallelGC -XX:ParallelGCThreads=2 -Dsun.rmi.dgc.client.gcInterval=1800000 -Dsun.rmi.dgc.server.gcInterval=1800000 -Dorg.apache.jasper.runtime.BodyContentImpl.LIMIT_BUFFER=true " but actually saw my start up times increase slightly. Our QA and production environments are on Linux CentOS so I'm hoping to get more information on improving Tomcat 7 start up times in that environment. My primary role is java developer and I don't have much system administration experience so I appreciate any input. Thank you for your time and suggestions.

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• error 503: Can't deploy rails 3 app with apache + thin (bitnamy ruby stack)

  - by Pacu

  As you'll notice, I'm a bit of a noob on Rails. Here's the thing I have a EC2 Bitnami RubyStack AMI running. I'm trying to deploy the sample project to be sure I'm doing the right thing, but I'm not getting anywhere at all. I just get a 503 error I'm following bitnami's docs on thin + apache Here are my files: the httpd.conf I include in the main httpd.conf Alias /sample "/home/bitnami/stack/projects/sample/public" <Directory "/home/bitnami/stack/projects/sample/public"> AllowOverride None Order allow,deny Allow from all </Directory> ProxyPass /sample balancer://appcluster ProxyPassReverse /sample balancer://appcluster <Proxy balancer://appcluster> BalancerMember http://127.0.0.1:3001/sample BalancerMember http://127.0.0.1:3002/sample BalancerMember http://127.0.0.1:3003/sample BalancerMember http://127.0.0.1:3004/sample </Proxy> the thin.yml file chdir: /opt/bitnami/projects/sample environment: production address: 127.0.0.1 port: 3000 timeout: 30 log: log/thin.log pid: tmp/pids/thin.pid max_conns: 1024 max_persistent_conns: 512 require: [] wait: 30 servers: 5 prefix: /sample daemonize: true I'm able to start and stop apache, but thin does not stop correctly though. When I try to stop thin, I get this output /opt/bitnami/projects/sample$ sudo thin -C config/thin.yml stop Stopping server on 127.0.0.1:3000 ... Can't stop process, no PID found in tmp/pids/thin.3000.pid Stopping server on 127.0.0.1:3001 ... Can't stop process, no PID found in tmp/pids/thin.3001.pid Stopping server on 127.0.0.1:3002 ... Can't stop process, no PID found in tmp/pids/thin.3002.pid Stopping server on 127.0.0.1:3003 ... Can't stop process, no PID found in tmp/pids/thin.3003.pid Stopping server on 127.0.0.1:3004 ... Can't stop process, no PID found in tmp/pids/thin.3004.pid I've tried to use nginx as well, without any luck unfortunately. Thank you for your time and help!

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• Anyone have a script to delete a specific local windows profile?

  - by Jordan Weinstein

  I'm looking for Powershell (preferred) script, or .CMD or .VBS, to delete a specific user profile on a workstation (WinXP) or terminal server (2000, '03 or '08). I know all about the delprof utility... That only allows you delete based on a period of inactivity. I want a script to: prompt admin for a username delete that username's profile and to delete the entire profile - registry hive too (not just the folder structure within Documents and Settings). The same way it would if you went to My Computer Properties Advanced tab User Profiles Settings and deleted profiles from there. Any ideas? All I can think of is doing an AD lookup to get the SID of the user specified, then using that to delete the correct registry hive too... something simpler would be nice though... Basically, my HelpDesk used to be local administrators on our Citrix servers and a common fix for various issues was for them to delete a user's profile on the citrix server(s) and have that user log back in - voila, whatever issue they had was resolved. Going forward, in new Citrix environment, they will no longer be local admins on those boxes, but still need to be able to delete profiles (deleting the entire profile: folder and reg hive is key). thanks.

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• What needs to be considered when setting up for Linux Development? [closed]

  - by user123586

  I want to set up a box for Linux development. I have a working linux install with the usual toolchain and an IDE. I'm looking for advice on how to approach structuring accounts and folders for development. As the Perl folks say "There's always more than one way to do it." Left to my own devices, I'll come up with several unproductive ways of doing it before figuring out what an experienced Linux programmer would think obvious. I'm not looking for instructions to follow for a specific set of tools or a specific software package. Instead, I'm looking for insight into what decisions need to be made and how to make them, with understanding of the advantages and disadvantages of each individual choice. These are some of the questions that come up: Where to put sources Where to put built object files and libraries where to install what to set in environment variables what compiler flags matter and how do you manage them across several types of builds what configuration entries to make in an IDE how to manage libraries to support multiple environments how to handle different build versions such as debug vs release, or cross platform builds If you are an experienced Linux developer, the answers to these questions may seem trivial and obvious. I'd like to learn to make decisions about these questions that result in as little manual configuration as possible, given some existing sources, a particular IDE, or no IDE at all, a paticular set of development libraries etc. At this point you're probably thinking: Can you be more specific? Sure. But remember that I'm trying to learn how to think about this stuff, not just follow a recipie for a specific set of results. Example: Setup a project that uses CMake for some of its components, autogen.sh followed by configure for others and just configure for a few more: debug builds without an IDE debug builds in NetBeans debug builds in Eclipse debug build in Visual Studio all of the above with release builds for Linux, Mac and Windows. So... **What are your thoughts on an approach that works for all four? Do you have any advice on what to read?**

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• cPanel FTP account access to sym links from parent directory

  - by totbar

  I would like to give a potential developer temporary access to some of my projects. I have almost everything in its own subdomain, and each directory is a sibling to my public_html directory. It looks something like: ("developer" is the cPanel account name.) developer/ *This is the top level directory for the cPanel account. "/home/developer" site1/ *site1.mysite.com site2/ *site2.mysite.com site3/ *site3.mysite.com public_html/ *www.mysite.com ... etc I created a directory inside public_html called tempdev and I added symbolic links to each of the sibling directories listed above. My understanding of cPanel is that I can only assign one user with "Special FTP Access" per domain. I really dont want to give a complete stranger my login creds, (its just a development environment but still). So I used the cPanel FTP account creator UI. It will not allow me to assign the user access to the directories outside of public_html. I cant even give access to public_html either. So I made the tempdev directory in www and created the symlinks. Using the new account, I can see the symlinks, but I can go into them. Is there a better way to accomplish what I am attempting?

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• How to decouple development server from Internet?

  - by intoxicated.roamer

  I am working in a small set-up where there are 4 developers (might grow to 6 or 8 in cuople of years). I want to set-up an environment in which developers get an internet access but can not share any data from the company on internet. I have thought of the following plan: Set-up a centralized git server (Debian). The server will have an internet access. A developer will only have git account on that server, and won't have any other account on it. Do not give internet access to developer's individual machine (Windows XP/Windows 7). Run a virtual machine (any multi-user OS) on the centralized server (the same one on which git is hosted). Developer will have an account on this virtual machine. He/she can access internet via this virtual machine. Any data-movement between this virtual machine and underlying server, as well as any of the developer's machine, is prohibited. All developers require USB port on their local machine, so that they can burn their code into a microcontroller. This port will be made available only to associated software that dumps the code in a microcontroller (MPLAB in current case). All other softwares will be prohibited from accessing the port. As more developers get added, providing internet support for them will become difficult with this plan as it will slow down the virtual machine running on the server. Can anyone suggest an alternative ? Are there any obvious flaws in the above plan ? Some key details of the server are as below: 1) OS:Debian 2) RAM: 8GB 3) CPU: Intel Xeon E3-1220v2 4C/4T

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• How do I find and kill a php loop (process)?

  - by Hoytman

  I have a php script that I have been developing which calls an external api within a loop. It is being tested on a VPS which is running LAMP on Debian. I noticed this morning that the api was not responding to my script. When I called the provider, they told me that my server had been calling the api 1000's of times per hour for the past 10 hours. I am assuming that a php script (which I have been working on the day before and testing on my VPS) entered into an infinite loop during one of the executions, and never came out (I have been testing it from the command prompt, and not over the web.) I have attempted to stop and start Apache, but the api support staff says that the calls are still coming in from my server address. How can I find and stop the process? Also, is there a possibility that the Apache stop/start solved the problem, but the api is still trying to sort through past calls? Please forgive me for not using my local test environment correctly. Edit: I do not know the process name, I need to discover the name (or pid) based on behavior.

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• Looking for a powershell script that can pull a file from a set of PC's and FTP

  - by DangeRuss

  I'm looking to write a script (preferably powershell) that will essentially copy a file from a bunch of PC's and FTP it to a server. So the structure of the environment is that we have a file on multiple PC's (around 50 or so) that need to placed on a server. Sometimes one of the PC's may be turned off so the script would first need to ensure the PC is up and running (maybe a ping result), then it would need to go into a directory on that PC, pull a file off of it, rename the file, place into a source directory, then remove the file. Naming convention doesn't matter, but date/time stamp would be easiest. Ideally, it would be best to first move all the files to a source directory to save on FTP bandwidth, but since the files will be named the same, the files must be renamed during the move process. Move not copy because the directory needs to be empty so the file can be re-created the next day. So once moved to the source directory, now all the files need to be FTP'd to a server for processing. After all of this, we need to know which PC's on the list did not respond so we can manually retrieve the file so the script should output a file (txt is fine) that will show which PC's were offline. Everything is one domain and script will be run from an server with admin creds. Thank you!

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• Server periodically freezing - Help Stabilizing

  - by JonDog

  We run an asp.net/sql server data collection website with a hand full of clients dumping data in and running reports. We moved to a new server (specs below) and have had issues with it freezing and having to reboot it a dozen times over the pass six months. The hosting company has mentioned possible causes (listed below) but cant give a definite answer on what is going wrong. They have offered to reconfigure how ever I like. We have benefited from having a much faster system and really dont want to get rid of the ssd's unless they are the issue. Two possible setup changes that I've talked with them about are also listed below. Any suggestions on what maybe causing the freezing issue as well as suggestion on a new setup would be great. My main questions are: Do SSD generally have problems running the OS & SQL Server on the same RAID Array? and Are the new SSD's still unrefined enough to be running in a production environment? Thanks Current: Xeon Quad Core E3-1270 3.40 Ghz 16 GB DDR3-1333 ECC SDRAM First Hard Drive: 120GB Intel SSD Second Hard Drive: 120GB Intel SSD Third Hard Drive: 120GB Intel SSD Fourth Hard Drive: 120GB Intel SSD SAS 4 Port RAID Card Windows 2012 Standard Edition - 64 Bit MSSQL 2008 Web Edition Possible Causes: Running Sql Server & OS on same RAID Array OS Software Issues Using SSD's CPU Underpowered Not enough RAM Option 1 2x Xeon Quad Core E5-2603 1.80 GHz 16 GB DDR3-1333 ECC SDRAM 1 x 240GB Intel SSD - OS 3 x 1 TB SATA HDD (7200 RPM) - SQL Server SATA 4 Port RAID Card Windows 2012 Standard Edition - 64 Bit Option 2 Dell PowerEdge E3-1270v2 3.5GHz 4 Cores 16 GB DDR3-1600 UDIMM 4 x 128 GB Samsung 840 Pro SSD Add-in H200 (SAS/SATA Controller), 4 Hard Drives - RAID 10 Windows 2012 Standard Edition - 64 Bit

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• Windows Server 2003 (w/Exchange) move to new machine

  - by James Booker

  I have an ageing domain controller (the only one on a 10-pc network) which needs rebooting often. I have a Dell Poweredge 2850 server doing nothing, so I'd like to move the DC to that, but here's the catch - I don't have Win2k Server Std install media any more as it's been lost. I purchased "Easus Todo Backup Advanced Server" which claims to be able to recover to dissimilar metal, but it's not quite working (although I don't think it's the product's fault) I know the server and PERC RAID card are good because I installed Ubuntu on the logical drive (4 x 72GB disks RAID 5) no problems. I've booted frmo the Easus Todo backup CD (which is WinPE based) and recovered to the logical disk on the RAID (after installing driver inside the WinPE environment from a NAS drive) The problem is when I boot the server, I can get the OS selection menu, but any option results in a blank screen, with no errors. I figure this is probably because the driver wasn't installed on the old machine (which is IDE-based (i know, i know!) and doesn;t have a RAID controller) I've booted from the CD and copied the mraid35x.sys file to the c:\windows\system32\drivers folder on the recovered system, but it makes no difference. I made a boot.ini with rdisks 0-10 defined, and booting from each of these resulted in a file error (i.e. 'this isn't a real disk') - the only disk that gets any response (the blank screen) is multi(0)disk(0)rdisk(0)partition(1) which just gives me the blank black screen and no disk activity. Is there any way I can force the drvier to be installed on the source system (so i can do a full backup again), i've tried right-clicking the oemsetup.inf and clicking install, but it didn't actually do anything. I attempted to force it with the 'Add new hardware' wizard and forcing with the 'have disk' option but it still gave me no hardware to select. Also I've got an identical machine running WinXP which uses the PERC driver successfully (which was obviously done at install time) and the boot.ini settings are the same : multi(0)disk(0)rdisk(0)partition(1) Any ideas would be appreciated.

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