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• Can I autoregister my clients/servers in local DNS?

  - by Christian Wattengård

  Right now I have a W2k12 server at home that I run as a domain controller. This has the extra benefit of registering every "subordinate" computers name in it's DNS so that I don't have to go around remembering IP's all the time. (And it let's me easily run dhcp also on my servers). I need to rework my home network for several odd reasons, and in this new scenario there is no place for a big honking W2k12 server box. I have a RasPI, and I have other smallish linux boxen I can use. (In a worst case scenario I'll use my NUC, but then I'll be forced to use my home cinema's UPnP-client for media... The HORROR!!) Is it possible to set up a DNS-server-"appliance" that somehow autoregisters it's own hostname.. Scenario: Router (N66u) on 172.20.20.1. Runs DHCP on 172.20.20.100-200 range. Server [verdant] of a *nix flavor on 172.20.20.2 Laptop [speedy] of W8 flavor on DHCP assigned Laptop [canary] of W8 flavor on DHCP assigned Desktop [lianyu] of Ubunto flavor on DHCP assigned What I would like is that all of the above servers (except possibly the router) would be available on verdant.starling.lan and canary.starling.lan and so on. This is how it works right now (except the Ubuntu box... I haven't cracked that one yet) because Windows just does this for you.. I would also be able to do this without any manual labor on the server. When I tell my box it's name is smoak it should "immediately" be available as smoak.starling.lan without any extra configuration on my part. How can I do this in a Linux (Ubuntu) environment? (Bonus comment upvote for naming the naming scheme :P )

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• Need help with custom init script

  - by churnd

  I'm trying to set up an init script for a process on redhat linux: #!/bin/sh # # Startup script for Conquest # # chkconfig: 345 85 15 - start or stop process definition within the boot process # description: Conquest DICOM Server # processname: conquest # pidfile: /var/run/conquest.pid # Source function library. This creates the operating environment for the process to be started . /etc/rc.d/init.d/functions CONQ_DIR=/usr/local/conquest case "$1" in start) echo -n "Starting Conquest DICOM server: " cd $CONQ_DIR && daemon --user mruser ./dgate -v - Starts only one process of a given name. echo touch /var/lock/subsys/conquest ;; stop) echo -n "Shutting down Conquest DICOM server: " killproc conquest echo rm -f /var/lock/subsys/conquest rm -f /var/run/conquest.pid - Only if process generates this file ;; status) status conquest ;; restart) $0 stop $0 start ;; reload) echo -n "Reloading process-name: " killproc conquest -HUP echo ;; *) echo "Usage: $0 {start|stop|restart|reload|status}" exit 1 esac exit 0 However, the cd $CONQ_DIR is getting ignored, because the script errors out: # ./conquest start Starting Conquest DICOM server: -bash: ./dgate: No such file or directory [FAILED] For some reason, I have to run dgate as ./dgate. I cannot specify the full path /usr/local/conquest/dgate The software came with an init script for a Debian system, so the script uses start-stop-daemon, with the option --chdir to where dgate is, but I haven't found a way to do this with the Redhat daemon function.

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• Where to get glib-config for Kubuntu?

  - by Carl Smotricz

  I'm trying to compile Midnight Commander on a KUbuntu 9.10 (Karmic) box with no root access. I've set up a directory under $HOME, downloaded the mc source package and various stuff required for building, such as autotools. I've unpacked the CONTENTS of all those packages into this working directory such that I have the usual ./usr, ./lib, ./etc hierarchy. I manage to get configure through a lot of tests, but I can't seem to fool it into finding glib. checking for glib-2.0... checking for glib-config... no checking for glib12-config... no checking for glib-config... no checking for GLIB - version >= 1.2.6... no *** The glib-config script installed by GLIB could not be found *** If GLIB was installed in PREFIX, make sure PREFIX/bin is in *** your path, or set the GLIB_CONFIG environment variable to the *** full path to glib-config. configure: error: Test for glib failed. GNU Midnight Commander requires glib 1.2.6 or above. My system has glib installed: /lib/libglib-2.0.so.0 /lib/libglib-2.0.so.0.2200.3 ... and I've also downloaded and unpacked the glib package into my working directory: libglib2.0-0_2.22.2-0ubuntu1_i386.deb libglib2.0-dev_2.22.2-0ubuntu1_i386.deb ... but still the elusive glib-config is nowhere to be found. It's not in any debian package for Karmic, either. So I'd appreciate any help getting over this hurdle. Please note, again, that I don't have root, so I can't just merrily apt-get stuff.

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• No audio in my ubuntu system

  - by hap497

  Hi, I am running ubuntu 9.10. But there is no sound in my environment. When I go to System-Preference, there is no 'sound' entry there. $ aplay -l **** List of PLAYBACK Hardware Devices **** card 0: I82801AAICH [Intel 82801AA-ICH], device 0: Intel ICH [Intel 82801AA-ICH] Subdevices: 1/1 Subdevice #0: subdevice #0 $ lsmod Module Size Used by usb_storage 52576 3 binfmt_misc 8356 1 vboxvfs 34620 0 vboxvideo 1884 1 drm 159584 2 vboxvideo agpgart 34988 1 drm snd_intel8x0 30168 2 snd_ac97_codec 101216 1 snd_intel8x0 ac97_bus 1532 1 snd_ac97_codec snd_pcm_oss 37920 0 snd_mixer_oss 16028 1 snd_pcm_oss snd_pcm 75296 3 snd_intel8x0,snd_ac97_codec,snd_pcm_oss snd_seq_dummy 2656 0 snd_seq_oss 28576 0 iptable_filter 3100 0 snd_seq_midi 6432 0 ip_tables 11692 1 iptable_filter x_tables 16544 1 ip_tables snd_rawmidi 22208 1 snd_seq_midi snd_seq_midi_event 6940 2 snd_seq_oss,snd_seq_midi ppdev 6688 0 snd_seq 50224 6 snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_seq_mid i_event snd_timer 22276 2 snd_pcm,snd_seq snd_seq_device 6920 5 snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_rawmidi ,snd_seq psmouse 56500 0 serio_raw 5280 0 snd 59204 14 snd_intel8x0,snd_ac97_codec,snd_pcm_oss,snd_mixer_ oss,snd_pcm,snd_seq_oss,snd_rawmidi,snd_seq,snd_ti mer,snd_seq_device i2c_piix4 9932 0 parport_pc 31940 0 soundcore 7264 1 snd snd_page_alloc 9156 2 snd_intel8x0,snd_pcm vboxguest 143836 7 vboxvfs lp 8964 0 parport 35340 3 ppdev,parport_pc,lp pcnet32 32644 0 mii 5212 1 pcnet32 floppy 54916 0 ~:987:2$ lspci 00:00.0 Host bridge: Intel Corporation 440FX - 82441FX PMC [Natoma] (rev 02) 00:01.0 ISA bridge: Intel Corporation 82371SB PIIX3 ISA [Natoma/Triton II] 00:01.1 IDE interface: Intel Corporation 82371AB/EB/MB PIIX4 IDE (rev 01) 00:02.0 VGA compatible controller: InnoTek Systemberatung GmbH VirtualBox Graphics Adapter 00:03.0 Ethernet controller: Advanced Micro Devices [AMD] 79c970 [PCnet32 LANCE] (rev 40) 00:04.0 System peripheral: InnoTek Systemberatung GmbH VirtualBox Guest Service 00:05.0 Multimedia audio controller: Intel Corporation 82801AA AC'97 Audio Controller (rev 01) 00:06.0 USB Controller: Apple Computer Inc. KeyLargo/Intrepid USB 00:07.0 Bridge: Intel Corporation 82371AB/EB/MB PIIX4 ACPI (rev 0 00:0b.0 USB Controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) USB2 EHCI Controller ~:988:3$

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• Migrating to CF9: trouble getting JRun working with SSL

  - by DaveBurns

  I have a client on MX7 who wants to migrate to CF9. I have a dev environment for them on my WinXP machine where I've configured MX7 to run with JRun's built-in web server. I've had that working for a long time with both regular and SSL connections. I installed CF9 yesterday side-by-side with the existing MX7 install to start testing. The install was smooth and detected MX7, adjusted CF9's port numbers for no conflict, etc. Testing started well: MX7 over regular and SSL still worked and CF9 worked over regular HTTP. But I can't get CF9 to work with SSL. I installed a new certificate with keytool, FireFox (v3.6) complained about it being unsigned, I added it to the exception list, and now I get this: Secure Connection Failed An error occurred during a connection to localhost:9101. Peer reports it experienced an internal error. (Error code: ssl_error_internal_error_alert) I've been Googling that in all variations but can't find much help to get past this. I don't see any info in any log files either. FWIW, here's my SSL config from SERVER-INF/jrun.xml: <service class="jrun.servlet.http.SSLService" name="SSLService"> <attribute name="enabled">true</attribute>` <attribute name="interface">*</attribute> <attribute name="port">9101</attribute> <attribute name="keyStore">{jrun.rootdir}/lib/mykey</attribute> <attribute name="keyStorePassword">*deleted*</attribute> <attribute name="trustStore">{jrun.rootdir}/lib/trustStore</attribute> <attribute name="socketFactoryName">jrun.servlet.http.JRunSSLServerSocketFactory</attribute> <attribute name="deactivated">false</attribute> <attribute name="bindAddress">*</attribute> <attribute name="clientAuth">false</attribute> </service> Anyone here know of any issues re setting up SSL and CF9? Anyone had success with it? Dave

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• SSH X11 forwarding does not work. Why?

  - by Ole Tange

  This is a debugging question. When you ask for clarification please make sure it is not already covered below. I have 4 machines: Z, A, N, and M. To get to A you have to log into Z first. To get to M you have to log into N first. The following works: ssh -X Z xclock ssh -X Z ssh -X Z xclock ssh -X Z ssh -X A xclock ssh -X N xclock ssh -X N ssh -X N xclock But this does not: ssh -X N ssh -X M xclock Error: Can't open display: The $DISPLAY is clearly not set when logging in to M. The question is why? Z and A share same NFS-homedir. N and M share the same NFS-homedir. N's sshd runs on a non standard port. $ grep X11 <(ssh Z cat /etc/ssh/ssh_config) ForwardX11 yes # ForwardX11Trusted yes $ grep X11 <(ssh N cat /etc/ssh/ssh_config) ForwardX11 yes # ForwardX11Trusted yes N:/etc/ssh/ssh_config == Z:/etc/ssh/ssh_config and M:/etc/ssh/ssh_config == A:/etc/ssh/ssh_config /etc/ssh/sshd_config is the same for all 4 machines (apart from Port and login permissions for certain groups). If I forward M's ssh port to my local machine it still does not work: terminal1$ ssh -L 8888:M:22 N terminal2$ ssh -X -p 8888 localhost xclock Error: Can't open display: A:.Xauthority contains A, but M:.Xauthority does not contain M. xauth is installed in /usr/bin/xauth on both A and M. xauth is being run when logging in to A but not when logging in to M. ssh -vvv does not complain about X11 or xauth when logging in to A and M. Both say: debug2: x11_get_proto: /usr/bin/xauth list :0 2>/dev/null debug1: Requesting X11 forwarding with authentication spoofing. debug2: channel 0: request x11-req confirm 0 debug2: client_session2_setup: id 0 debug2: channel 0: request pty-req confirm 1 debug1: Sending environment. I have a feeling the problem may be related to M missing in M:.Xauthority (caused by xauth not being run) or that $DISPLAY is somehow being disabled by a login script, but I cannot figure out what is wrong.

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• How to replace the domain name in a Wordpress database?

  - by Cristian

  I have a Wordpress database which was installed in a development environment... thus, all references to the site itself have a fixed IP address (say 192.168.16.2). Now, I have to migrate that database to a new Wordpress installation on a hosting. The problem is that the SQL dump contains a lot of references to the IP address, and I have to replace it with: my_domain.com. I could use sed or some other command to change the that from the command line, the problem is that there are a lot of configuration data which uses JSON. So what? Well, as you know, JSON arrays uses things like: s:4: to know how many chars an element has, and thus, if I just replace the IP with the domain name, the configuration files will get corrupted. I used an app for Windows some years ago that allows to change values in a database and takes care of the JSON arrays. Unfortunately, I forgot the name of the app... so the question is: do you know any app that allows me to do what I want?

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• Cannot access server shares over VPN

  - by DuncanDavies

  I've set up a single hosted server to use as a development environment for a web-based application. The web app is served up fine on port 80, however I'm struggling to get my VPN to behave how I'd expect so the developers don't have the access they require. The VPN connects fine and I can access the back-end database (SQL Server) which resides on the server with the client tools from the laptops. However they cannot access any shared folders. The server's local IP address is 10.x.x.x, and I've assigned a static IP address pool to RRAS (of 192.168.100.1 - 20). The clients pick up a valid IP Address (i.e. 192.168.100.9) when they connect. There is no name resolution setup, DNS or WINS. When connected via VPN the clients can ping the server (192.168.100.1) by IP Address, but cannot map a drive to a shared folder (net use * \\192.168.100.1\xxxxx) - I get 'System error 53 has occurred. The network path was not found.' I don't understand why I can ping by the ip, but not map by it. Some details: Server OS is Windows 2008 (Datacenter) VPN is SSTP using RRAS Clients are all Windows 7 I've tried temporarily disabling the firewalls So, why can we not access the file system when everything else (ping, RDP, SQL Server clients tools) works? Thanks for your help Duncan

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• How to diagnose website performance/app pool recycling with Windows 2008/IIS7

  - by ilasno

  Ok, so there are various symptoms here (clients and and our own employees complaining of intermittent slowdowns, getting 'kicked out' to login page or just having a save request not properly save the submitted data). The environment: Windows Server 2008 (Datacenter), Service Pack 2, 64-bit, 2x2.8 GHz processors, 7.5 GB RAM MS SQL Server 2008 (running on the same machine) IIS 7 There are ~10 websites running on the server, each in their own application pool - most of these pools are running in Integrated mode, 2 are in Classic, all are on .NET 2.0 and all run as ApplicationPoolIdentity. I'm trying to analyze, diagnose, and troubleshoot and am struggling with where to get more info about what could be happening. Here are some steps i have already taken: Set each application pool to recycle once per day, and removed any other automatic recycling Set a Virtual Memory Limit for each to 1024000KB (1GB) Enabled ALL 'Generate Recycle Event Log Entry' entries (Config Changes, Isapi Reported Unhealthy, Manual Recycle, Private Memory Limit Exceeded, Regular Time Interval, Request Limit Exceeded, Specific Time, Virtual Memory Limit Exceeded) I have seen the app pool processes recycle (in Task Manager) - a new one will start up, and then the first one dies off - and this has happened without the memory or time going over the settings. This is a fairly new server, and most of these came from Windows Server 2003/IIS6. Any 'next steps' for setting up information gathering, logging, diagnosing, etc. would be much appreciated! j

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• PHP Output buffer flush issue on Apache/Linux

  - by Iiro Vaahtojärvi

  Hi, I'm running into issues with the PHP output buffer flushing on my Linux web server. The output buffer is maintained correctly and all the right data is pushed to it in my code, but the usual flushing mechanisms won't flush it to the browser. I have tried everything posted here: http://php.net/manual/en/function.flush.php but no success so far. I got a small script from php.net to test it: <?php ob_start(); for($i=0;$i<70;$i++) { echo 'printing...<br />'; ob_get_flush(); flush(); usleep(300000); } ?> This should print "printing..." to the browser 70 times, one line every three seconds. This works fine on my other testing environment which is based on Windows (still using apache, XAMPP package), but on my Linux server it doesn't. It waits for the script to finish before giving anything to the browser, basically ignoring the whole flush command. If anyone has experienced this before or knows of anything that could help (be it server configuration or adjustment to code) it would be greatly appreciated!

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• Can MS Services for Unix be deployed and accessed from a shared drive?

  - by Ian C.

  I'm interested in experimenting with replacing our dependency on MKS with MS' Sevices for Unix toolset. I was wondering if anyone has any experience with deploying SFU on a shared drive? We like to, wherever possible, host our dev tools on one central NAS and call to the NAS to access the tools instead of rolling stuff out to each and every desktop. I'm not interested in the NFS support or ActiveState Perl. Really, none of the daemon technology is required here. I'm looking for replacements for the coreutils/binutils stuff you find in Linux (and MKS on Windows): sed, awk, csh, bash, grep, ls, find -- the meat-and-potates command line apps that our build and test scripts are built around. If I limit the install to just the Interix GNU Components (and maybe the Remote Connectivity components) will is run nicely from a shared location? To head off some questions: Yes, I've looked at Cygwin. Unfortunately it's performance in our build and test environment is poor. It runs considerably slower than MKS and it's not a direct drop-in replacement for MKS (thanks to its internal pathing and limitations with commands like 'ps'), so it's a tougher sell. Yes, I'm looking at the MinGW offering in parallel to this.

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• How to setup Python with Lighttpd and FastCGI (like PHP)

  - by johndir

  Running Lighttpd on Linux, I would like to be able to execute Python scripts just the way I execute PHP scripts. The goal is to be able to execute arbitrary script files stored in the WWW directory, e.g. http://www.example.com/*.py. I would not like to spawn a new Python instance (interpreter) for every request (like done in regular CGI, if I'm not mistaken), which is why I'm using FastCGI. Following Lighttpd's documentation, the following is the FastCGI part of my config file. The problem is that it always runs the /usr/local/bin/python-fcgi script for every *.py file, regardless of the content of that file: http://www.example.com/script.py [output=>] "python-fcgi: test" (regardless of the content of script.py) I'm not interested in using any framework, but simply executing individual [web] scripts. How can I make it act like PHP, executing any script in the WWW directory by requesting it's path? /etc/lighttpd/conf.d/fastcgi.conf: server.modules += ( "mod_fastcgi" ) index-file.names += ( "index.php" ) fastcgi.server = ( ".php" => ( "localhost" => ( "bin-path" => "/usr/bin/php-cgi", "socket" => "/var/run/lighttpd/php-fastcgi.sock", "max-procs" => 4, # default value "bin-environment" => ( "PHP_FCGI_CHILDREN" => "1", # default value ), "broken-scriptfilename" => "enable" ) ), ".py" => ( "python-fcgi" => ( "socket" => "/var/run/lighttpd/fastcgi.python.socket", "bin-path" => "/usr/local/bin/python-fcgi", "check-local" => "disable", "max-procs" => 1, ) ) ) /usr/local/bin/python-fcgi: #!/usr/bin/python2 def myapp(environ, start_response): start_response('200 OK', [('Content-Type', 'text/plain')]) return ['python-fcgi: test\n'] if __name__ == '__main__': from flup.server.fcgi import WSGIServer WSGIServer(myapp).run()

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• Setting up Windows network on Xen

  - by samyboy

  I'm trying to install a Windows XP server in a Xen environment. The OS is booting fine. Unfortunately I can't figure out how to set up the network settings. Dom0 is a Debian Lenny currently hosting around 10 Linux virtual servers. Windows tells me I have a "limited connection". It can't get any DHCP response, nor access other hosts in the network Here is the Xen's client config file: kernel = '/usr/lib/xen-3.2-1/boot/hvmloader' builder = 'hvm' memory = '1024' device_model='/usr/lib/xen-3.2-1/bin/qemu-dm' acpi=1 apic=1 pae=1 vcpus=1 name = 'winexchange' # Disks disk = [ 'phy:/dev/wnghosts/exchange-disk,ioemu:hda,w', 'file:/mnt/freespace/ISO/DVD1_Installation.iso,ioemu:hdc:cdrom,r' ] # Networking vif = [ 'mac=00:16:3E:0A:D0:1B, type=ioemu, bridge=xenbr0'] # video stdvga=0 serial='pty' ne2000=0 # Behaviour boot='c' sdl=0 # VNC vfb = [ 'type=vnc' ] vnc=1 vncdisplay=1 vncunused=1 usbdevice='tablet' Server config (/etc/xen/xend-config.sxp) (network-script network-bridge) (network-script network-dummy) (vif-script vif-bridge) (dom0-min-mem 512) (dom0-cpus 0) (vnc-listen '0.0.0.0') Since I use Debian I had to create a link like this: /etc/xen/qemu-ifup - /etc/xen/scripts/qemu-ifup What did I do wrong? Please tell me if you want some more info (logs, etc)

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• Disable the user of Internet explorer through policies when called from HTML help

  - by Stephane

  Hello, I have a locked down environment where users are prohibited from doing, well, basically anything but run the specific programs we specify. We just switched a program from using the venerable "WinHELP" help format to HTML help (CHM) but that seem to have an unwanted and rather dangerous side effect: when a user click on a hyperlink inside the HTML help, a new internet explorer window is opened and the user is free to browse and do terrible things to my server (well, not that much, but still...) I have checked the session in this case and the IE window is actually hosted within the help engine: there is no iexplore.exe process running in the user session (and it cannot: it's explicitly prohibited). We have disable all help right now until we find a solution. I'm working with the help team to have all external URLs removed from the help file but that is going to be a long and error-prone task. Meanwhile, I've checked all the group policies option but I have to say that I was unable to find anything that would prevent a standalone IE window hosted in a random process from running. I don't want to disable WinHTTP or the IE rendering engine or anything of the sort. But I need to prevent all users members of a specific AD user group from ever having an IE window displayed to them. The servers are running Windows 2003 and Citrix metaframe 4.5. Thanks in advance

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• Experiences in Upgrading from Exchange 2003 to Exchange 2010

  - by gWaldo

  I'm currently running Exchange 2003 SP2 Cluster on a Server 2003 AD Forest (in native 2003 mode), and we beginning to plan the upgrade to Server 2008 AD and Exchange 2010. We have two main sites, one middle-sized office, and a couple of smaller sites which have DCs (which may be RODCs after the upgrade). Currently all of our Exchange cluster is in my main site, but we are considering using the new datastore paradigm for load-balance/failover at the other large site, but this is not set in stone. Right now we are in the information-gathering and planning phases. I am looking for input of any gotchas experienced while performing either upgrade, but especially the Exchange upgrade. Gotchas? What surprised you? What wasn't documented? What said one thing but was misleading? (Confusing either in content or severity.) What is great or horrible about the new system? What worked well? What worked poorly? If you were to do it over again...? (I know that this isn't so much a question that can be definitively answered, but I'm happy to reward insight and useful resources (not the Microsoft documentation, but Blogposts are welcome) with upvotes.) UPDATE A couple items of note: -We are not currently using OWA (currently only the admins), but it may become more of a consideration with iOS devices. -We do have a small number of Blackberries in the environment (< 10%). -In addition to the standard Exchange connectors, we have a third-party connector for Captaris RightFax integration.

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• Facing error: "Could not open a connection to your authentication agent."; trying to add ssh-key.

  - by Kaustubh P

  I use ubuntu server 10.04. ssh-add /foo/cert.pem gave the following output Could not open a connection to your authentication agent. These are my running processes: ps -aux | grep ssh Warning: bad ps syntax, perhaps a bogus '-'? See http://procps.sf.net/faq.html root 1523 0.0 0.0 49260 632 ? Ss Dec25 0:00 /usr/sbin/sshd root 10023 0.0 0.3 141304 6012 ? Ss 12:58 0:00 sshd: padmin [priv] padmin 10117 0.0 0.1 141304 2400 ? S 12:58 0:00 sshd: padmin@pts/1 padmin 11867 0.0 0.0 7628 964 pts/1 S+ 13:06 0:00 grep --color=auto ssh root 31041 0.0 0.3 141264 5884 ? Ss 11:24 0:00 sshd: padmin [priv] padmin 31138 0.0 0.1 141264 2312 ? S 11:25 0:00 sshd: padmin@pts/0 root 31382 0.0 0.3 139240 5844 ? Ss 11:26 0:00 sshd: padmin [priv] padmin 31475 0.0 0.1 139372 2488 ? S 11:27 0:00 sshd: padmin@notty padmin 31476 0.0 0.0 12468 964 ? Ss 11:27 0:00 /usr/lib/openssh/sftp-server These are my environment variables: $ env | grep SSH SSH_CLIENT=192.168.1.13 42626 22 SSH_TTY=/dev/pts/1 SSH_CONNECTION=192.168.1.13 42626 192.168.1.2 22 What is wrong? Why cant I add any identities? Thanks.

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• Self-Resetting Power Strips?

  - by Justin Scott

  We are about to deploy a number of secure kiosks into an environment where they may be prone to lightning strikes and power surges on a somewhat regular basis (southern Florida in a place where the existing electrical infrastructure is, shall we say, a bit out of date). Ideally we would use battery backups on each system, but it's not in the budget. We plan to use a standard power strip with a circuit breaker built-in to protect the computers, but management has asked if there is a power strip that can reset itself after the breaker has been tripped. I've looked around and wasn't able to find such a beast, and it seems to me that it would probably be a safety issue for such a product to exist (e.g. if something plugged into the strip is drawing a lot of current and trips the breaker, you wouldn't want that resetting itself to prevent a possible fire). Nevertheless, if anyone has experience with such a product or can point me in the direction of something that would allow the breakers to be reset automatically or remotely (we don't want to have to send someone to each kiosk every time there is a power surge) I would appreciate any tips.

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• Why does MOSS sometimes delete an existing user from a site?

  - by Jesse

  I'm experiencing an issue with a MOSS installation. I am using the Site Settings Permissions to add an Active Directory account as a valid user of a site. This entails validating that the user account name is correct via the 'Check Names' button, then giving them 'Contribute' permissions. Once this is done they appear as a user on the 'All People' page. This works fine and the user is able to access the site. At some point in the future (sometimes several days later) the user account is somehow removed as a valid user from the site. This site resides in a test environment so access is pretty well controlled; which has allowed us to rule out someone else going in and removing the user manually. This appears to be something that is being done by the system itself and we have no idea why. We can manually add the user back, but then it will eventually get removed again later. I have an admittedly limited understanding of SharePoint permissions, but I believe that SharePoint stores valid users in a SQL database and I would assume that when dealing with Active Directory accounts it would be storing the user name and probably the SID. It appears that for some reason this record is later getting deleted out of the database, as the users will suddenly disappear from the "All People" page and will start getting "Access Denied: You are not authorized..." messages when trying to access the site. Has anyone seen this behavior before?

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• Strange behaviour when creating/deleting subdomains

  - by Saif Bechan

  This can be a DNS cache issue from my local machine, but I am not sure. This is what happens. I have a domain that does not use wildcard subdomains, so they have to be created. Without creating the domain, and I point my browser to test.domain.com, I get a page server not found. Now when I create the subdomain, I keep getting the same problem. Now when I first create the domain, without ever visiting the page, I get the normal page, but now when I delete the subdomain, it never goes away. Can this be a DNS cache issue, I am working on a shared environment, maybe the router has a cache but I doubt that. Can this have something to do with my setup. I have tried to use the Google DNS hosting, but this gives me the same results. I have also tried some tools that clear my local DNS cache, they were some add-ons for FireFox. Anyone have any ideas what can be the problem. Are there any tests I can do to see if there is some kind of cache between me and the server.

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• calculate AUC (GAM) in R [migrated]

  - by ahmad

  I used the following script to calculate AUC in R: library(mgcv) library(ROCR) library(AUC) data1=read.table("d:\\2005.txt", header=T) GAM<-gam(tuna ~ s(chla)+s(sst)+s(ssha),family=binomial, data=data1) gampred<- predict(GAM, type="response") rp <- prediction(gampred, data1$tuna) auc <- performance( rp, "auc")@y.values[[1]] auc roc <- performance( rp, "tpr", "fpr") plot( roc ) But when I was running the script, the result is: **rp <- prediction(gampred, data1$tuna) Error in prediction(gampred, data1$tuna) : Format of predictions is invalid. > > auc <- performance( rp, "auc")@y.values[[1]] Error in performance(rp, "auc") : object 'rp' not found > auc function (x, min = 0, max = 1) { if (any(class(x) == "roc")) { if (min != 0 || max != 1) { x$fpr <- x$fpr[x$cutoffs >= min & x$cutoffs <= max] x$tpr <- x$tpr[x$cutoffs >= min & x$cutoffs <= max] } ans <- 0 for (i in 2:length(x$fpr)) { ans <- ans + 0.5 * abs(x$fpr[i] - x$fpr[i - 1]) * (x$tpr[i] + x$tpr[i - 1]) } } else if (any(class(x) %in% c("accuracy", "sensitivity", "specificity"))) { if (min != 0 || max != 1) { x$cutoffs <- x$cutoffs[x$cutoffs >= min & x$cutoffs <= max] x$measure <- x$measure[x$cutoffs >= min & x$cutoffs <= max] } ans <- 0 for (i in 2:(length(x$cutoffs))) { ans <- ans + 0.5 * abs(x$cutoffs[i - 1] - x$cutoffs[i]) * (x$measure[i] + x$measure[i - 1]) } } return(as.numeric(ans)) } <bytecode: 0x03012f10> <environment: namespace:AUC> > > roc <- performance( rp, "tpr", "fpr") Error in performance(rp, "tpr", "fpr") : object 'rp' not found > plot( roc ) Error in levels(labels) : argument "labels" is missing, with no default** Can anybody help me to solve this problem? Thank you in advance.

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• Free tiered storage automation in linux?

  - by NginUS

  I have a couple virtualized fileservers running in QEMU/KVM on ProxmoxVE. The physical host has 4 storage tiers with significant performance variances. They're attached both locally and via NFS. These will be provided to the fileserver(s) as local disks, abstracted into pools, and handling multiple streams of data for the network. My aim is for this abstraction layer to intelligently pool the tiers. There's a similar post on the site here: Home-brew automatic tiered storage solutions with Linux? (Memory - SSD - HDD - remote storage) in which the accepted answer was a suggestion to abandon a linux solution for NexentaStor. I like the idea of running NexentaStor. It almost fits the bill. NexentaStor provides Hybrid Storage Pools, and I love the idea of checksumming. 16TB without incurring licensing fees is a huge plus as well. After the expense of the hardware, free is about all my budget can handle. I don't know if zfs pools are adaptive or dynamically allocated based on load, but it becomes irrelevant since NexentaStor doesn't support virtio network or block drivers, which is a must in my environment. Then I saw a commercial solution called SmartMove: http://www.enigmadata.com/smartmove.html And it looks like a step in the right direction, but I'm so broke I'd be wasting their time to even ask for a quote, so I'm looking for another option. I'm after a linux implementation that supports virtio drivers, and I'm at a loss as to which software is up to it.

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• SSH client not showing prompt after successful login

  - by user431949

  I'm having problems with my SSH client on Ubuntu 10.10. When I switch on my computer and open a Terminal and execute the command ssh user@host, it gives me a password prompt after which I enter the right password, I then get a prompt to execute my commands on the remote computer. Now the problem is, after a little while (probably around 10 minutes), the terminal window stops accepting commands (No matter what I type, nothing shows). Once this happens, I close the Terminal window and try to start all over again by opening another Terminal window. But this time around, after entering the right password, I don't get a welcome message or prompt. The cursor just keeps blinking on a new line. I ran the ssh command with -v parameter and the message I get after a successful login is: debug1: Authentication succeeded (password). debug1: channel 0: new [client-session] debug1: Entering interactive session. debug1: Sending environment. debug1: Sending env LANG = en_GB.utf8 Still the cursor keeps blinking on a new line without a prompt. However, Putty SSH client works perfectly on the same machine. Thank you very much for your time. Your help would be greating appreciated.

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• open_basedir problems with APC and Symfony2

  - by Stephen Orr

  I'm currently setting up a shared staging environment for one of our applications, written in PHP5.3 and using the Symfony2 framework. If I only host a single instance of the application per server, everything works as it should. However, if I then deploy additional instances of the application (which may or may not share the exact same code, dependent on client customisations), I get errors like this: [Tue Nov 06 10:19:23 2012] [error] [client 127.0.0.1] PHP Warning: require(/var/www/vhosts/application1/httpdocs/vendor/doctrine-common/lib/Doctrine/Common/Annotations/AnnotationRegistry.php): failed to open stream: Operation not permitted in /var/www/vhosts/application2/httpdocs/app/bootstrap.php.cache on line 1193 [Tue Nov 06 10:19:23 2012] [error] [client 127.0.0.1] PHP Fatal error: require(): Failed opening required '/var/www/vhosts/application1/httpdocs/app/../vendor/doctrine-common/lib/Doctrine/Common/Annotations/AnnotationRegistry.php' (include_path='.:/usr/share/pear:/usr/share/php') in /var/www/vhosts/application2/httpdocs/app/bootstrap.php.cache on line 1193 Basically, the second site is trying to require the files from the first site, but due to open_basedir restrictions it can't do that. I'm not willing to disable open_basedir as that is only masking the problem instead of solving it, and creates a dependency between applications that should not be present. I initially believed this was related to a Symfony2 error, but I've now tracked it down to an issue with APC; disabling APC also solves the error, but I'm concerned about the performance impact of doing so. Does anyone have any suggestions on what I might be able to do?

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• How do I correctly SSH port forward using LiveReload on Redhat?

  - by program247365

  Referencing this page: http://feedback.livereload.com/knowledgebase/articles/86280-if-you-edit-files-directly-on-your-server It says you can remotely port forward the LiveReload specific port of 35729, using this command: ssh -L 35729:127.0.0.1:35729 mylogin@myremoteserverIP When I run the -v option, I get: debug1: Local connections to LOCALHOST:35729 forwarded to remote address 127.0.0.1:35729 debug1: Local forwarding listening on ::1 port 35729. debug1: channel 0: new [port listener] debug1: Local forwarding listening on 127.0.0.1 port 35729. debug1: channel 1: new [port listener] debug1: channel 2: new [client-session] debug1: Entering interactive session. debug1: Sending environment. debug1: client_input_channel_req: channel 2 rtype [email protected] reply 1 debug1: Connection to port 35729 forwarding to 127.0.0.1 port 35729 requested. debug1: channel 3: new [direct-tcpip] channel 3: open failed: connect failed: Connection refused debug1: channel 3: free: direct-tcpip: listening port 35729 for 127.0.0.1 port 35729, connect from 127.0.0.1 port 63673, nchannels 4 I thought editing my /etc/services with this line, would work, but it doesn't: livereload 35729/tcp # livereload usage with guard-livereload Every time I attempt to connect with the browser extension, I believe It's getting blocked by my server. What am I missing here? Do I need to edit /etc/services for this to work?

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• bind9 named.conf zones size limit

  - by mox601

  I am trying to set up a test environment on my local machine, and I am trying to start a DNS daemon that loads tha configuration from a named.conf.custom file. As long as the size of that file is like 3-4 zones, the bind9 daemon loads fine, but when i enter the config file i need (like 10000 lines long), bind can't startup and in the syslog i find this message: starting BIND 9.7.0-P1 -u bind Jun 14 17:06:06 cibionte-pc named[9785]: built with '--prefix=/usr' '--mandir=/usr/share/man' '--infodir=/usr/share/info' '--sysconfdir=/etc/bind' '--localstatedir=/var' '--enable-threads' '--enable-largefile' '--with-libtool' '--enable-shared' '--enable-static' '--with-openssl=/usr' '--with-gssapi=/usr' '--with-gnu-ld' '--with-dlz-postgres=no' '--with-dlz-mysql=no' '--with-dlz-bdb=yes' '--with-dlz-filesystem=yes' '--with-dlz-ldap=yes' '--with-dlz-stub=yes' '--with-geoip=/usr' '--enable-ipv6' 'CFLAGS=-fno-strict-aliasing -DDIG_SIGCHASE -O2' 'LDFLAGS=-Wl,-Bsymbolic-functions' 'CPPFLAGS=' Jun 14 17:06:06 cibionte-pc named[9785]: adjusted limit on open files from 1024 to 1048576 Jun 14 17:06:06 cibionte-pc named[9785]: found 1 CPU, using 1 worker thread Jun 14 17:06:06 cibionte-pc named[9785]: using up to 4096 sockets Jun 14 17:06:06 cibionte-pc named[9785]: loading configuration from '/etc/bind/named.conf' Jun 14 17:06:06 cibionte-pc named[9785]: /etc/bind/named.conf.saferinternet:1: unknown option 'zone' Jun 14 17:06:06 cibionte-pc named[9785]: loading configuration: failure Jun 14 17:06:06 cibionte-pc named[9785]: exiting (due to fatal error) Are there any limits on the file size bind9 is allowed to load?

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