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• Shared FC LVM VG with LVs for each KVM VM. Clvm required?

  - by Cocoabean

  I have 2 virtual machine hosts running Ubuntu 12.04 and KVM managed with libvirt. They are both connected to the same VG which is a LUN on my SAN over FC. I provision LVs on this shared VG for each VM. I don't think I need HA or failover, but I do want live migration between the hosts. Do I need clvm in this case? As long as I don't try to start the same VM on each host should this work? Clvm requires lots of overhead with clustering tools that I don't think I need. I can deal with manually restarting VMs on other hosts in the event of a hardware failure.

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• Recycle remote IIS app pool from the command line?

  - by Ken

  Is it possible to recycle an IIS7 app pool from the command line, on a different machine? I've found APPCMD (appcmd recycle apppool my-app-pool), but it only operates on the host it's run on, AFAICT. I heard a rumor there might be a way to do it with Powershell, but I know nothing about that, and I'm apparently not very good at googling for it. I'm using Vista / Server 2008, if that matters. EDIT: I found something called WinRM that somebody claims is able to run APPCMD itself, but I'm not sure exactly how, yet.

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• Set default open-with app to a Python program on a Mac

  - by Vincent

  I use the open source application UliPad to edit restructured text files (rst). It is a Python application that I launch via Terminal like so: python32 UliPad.py I have python32 as an alias to the 32bit install of Python on my machine. I have several versions installed. First I would like a way to launch UliPad like other OS X apps. Not really sure how to do this. Secondly, I would like to set all .rst files to be opened with UliPad.py. Is there a way to do this? I know how to choose the default app in Finder but not sure how to choose UliPad as that app.

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• LDAP + LTSP 12.04

  - by us3r

  On ubuntu 12.04 i have some kind of problem with LTSP and LDAP. Sometimes I can log to the server, but sometimes I cant (window freezes on LDM) from thin client. Everything is ok when I log to the server like the local machine, but I have some kind of problem on thin client. pam_mkhomedir.so creates home dir, but i cant log..because Nothing happened - ldm freezes. This problem doesnt exist for "local" users (unix accounts) and on first logged LDAP user. It's important to mention that in log I can see nothing special. Does anybody have a problem with ltsp + ldap on ubuntu 12.04? There wasn't any problem on the previous versions. ps sorry for my english skills ;) EDIT: When LDM freezes in the logs there is something: May 17 11:59:52 bar sshd[6066]: Accepted password for student2 from 192.168.100.22 port 44000 ssh2 May 17 11:59:52 bar sshd[6066]: pam_unix(sshd:session): session opened for user student2 by (uid=0) May 17 12:00:03 bar sshd[6315]: subsystem request for sftp by user student2 And nothing other for this user.

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• VMWare OVA file

  - by Matteo Mosca

  I've received an .OVA file and I need to be aple to open/parse it. When I try to open it with VMware player, I get the following error: "Failed to open virtual machine: Failed to query source for information." When I try to open it with the Converter standalone client I get: "Unable to parse the OVF file" The extension can be OVF or OVA so I did choose the right file tipe from the open file dialog. If anyone had similar experience and solved it, please let me know. Thanks.

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• cannot access new drive through nfs

  - by l.thee.a

  I am running nfs-kernel-server to access my files on my linux machine(ubuntu - /share). The disk I have been using is full. So I have added a new disk and mounted it to /share/data. My other pc mounts the /share folder to /mnt/nfs; but cannot see the contents of /mnt/nfs/data. I have tried adding /share/data to /etc/exports, but it did not help. What do I do? PS: I am looking for another solution than explicitly mounting /share/data on the second drive.

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• install SSH2 (server?) on FreeBSD

  - by Robert Cabri

  At work we have freeBSD testmachine. And we have a PHP script that uses SSH2 protocol to connect with the freeBSD server. With this script I'm not able to connect to the freeBSD server. I wanted to install it, but I'm not sure where to find the right source to compile. The connection can be made with a different machine, but isntalling a new distro isn't the solution right now. I can connect to the server over ssh, but not with the ssh2 protocol in PHP (http://nl.php.net/ssh2).

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• Setting up DKIM for multiple domains on same host

  - by modulaaron

  I have DKIM set up for one domain and it works properly. I am trying, though, to set it up for another domain name on the same machine. In short, I am sending registration and password recovery emails from one domain and everything else from the other domain. Both domains map to the same host. Setting up domainkeys in this manner was no problem - adding another "DAEMON_OPTS=" line in /etc/default/dk-filter was the solution. This is not the case for DKIM, though, since it stores this information in a configuration file (/etc/dkim-filter.conf) that is formatted in a completely different manner. Any help would be most appreciated. Thanks.

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• Understanding how memory contents map into a struct

  - by user95592

  I am not able to understand how bytes in memory are being mapped into a struct. My machine is a little-endian x86_64. The code was compiled with gcc 4.7.0 from the Win64 mingw32-64 distribution for Win64. These are contents of the relevant memory fragment: ...450002cf9fe5000040115a9fc0a8fe... And this is the struct definition: typedef struct ip4 { unsigned int ihl :4; unsigned int version :4; uint8_t tos; uint16_t tot_len; uint16_t id; uint16_t frag_off; // flags=3 bits, offset=13 bits uint8_t ttl; uint8_t protocol; uint16_t check; uint32_t saddr; uint32_t daddr; /*The options start here. */ } ip4_t; When a pointer to such an structure (let it be *ip4) is initialized to the starting address of the above pasted memory region, this is what the debugger shows for the struct's fields: ip4: address=0x8da36ce ip4->ihl: address=0x8da36ce, value=0x5 ip4->version: address=0x8da36ce, value=0x4 ip4->tos: address=0x8da36d2, value=0x9f ip4->tot_len: address=0x8da36d4, value=0x0 ... I see how ihl and version are mapped: 4 bytes for a long integer, little-endian. But I don't understand how tos and tot_len are mapped; which bytes in memory correspond to each one of them. Thank you in advance.

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• Scheduled Jobs during hours of autumn time change

  - by NealWalters

  I'm wondering how other people deal with this scenario. What if you have a job scheduled to run at 1:30 am. In the autumn, when time changes, the hour of 1:00:00 to 1:59:59 repeats itself and so that job would run twice. Could be Windows Task Scheduler, SQL Agent or any other scheduling tool. Most of these tools seem to be based on machine time, not UTC time. If I told it to run the job at UTC time each night, then I wouldn't have the duplicate hour issue.

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• cpufreq-selector, cpufreq-info reporting wrong max speed

  - by dty

  Hi, I've just built a new machine with a Core i5-760 CPU. Max speed is 2.80GHz (turbo mode notwithstanding). I've also done a vanilla install of Ubuntu 10.10. I've added the cpufreq-selector applet to the top panel, and its menus only allow me to select up to 2.39GHz. If I select the "performance" governor, it also shows 2.39GHz. cpufreq-info reports: $ cpufreq-info cpufrequtils 007: cpufreq-info (C) Dominik Brodowski 2004-2009 Report errors and bugs to [email protected], please. analyzing CPU 0: driver: acpi-cpufreq CPUs which run at the same hardware frequency: 0 1 2 3 CPUs which need to have their frequency coordinated by software: 0 maximum transition latency: 10.0 us. hardware limits: 1.20 GHz - 2.39 GHz available frequency steps: 2.39 GHz, 2.26 GHz, 2.13 GHz, 2.00 GHz, 1.86 GHz, 1.73 GHz, 1.60 GHz, 1.46 GHz, 1.33 GHz, 1.20 GHz available cpufreq governors: conservative, ondemand, userspace, powersave, performance current policy: frequency should be within 1.20 GHz and 2.39 GHz. The governor "ondemand" may decide which speed to use within this range. current CPU frequency is 1.20 GHz. cpufreq stats: 2.39 GHz:13.74%, 2.26 GHz:0.09%, 2.13 GHz:0.08%, 2.00 GHz:0.08%, 1.86 GHz:0.07%, 1.73 GHz:0.07%, 1.60 GHz:0.08%, 1.46 GHz:0.08%, 1.33 GHz:0.11%, 1.20 GHz:85.61% (15560) [...CPUs 1-3 elided, but similar...] Any idea how to get Ubuntu and the various tools to recognise this as a 2.80GHz processor? And ideally to report the actual speed when running in turbo mode too, but that's not critical. Edit: I should probably add that the BIOS (& Windows) are quite happy that it's a 2.80GHz CPU. Thanks.

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• Physically moving a hard drive from older iMac (c2d) to new iMac (i7) ?

  - by Inshim

  Instead of my usual habit of using superduper to mirror my drive to a new computer, I just physically moved the hard drive from an older iMac to a new one. But... it now doesn't boot, getting stuck at the apple logo screen. Since the hard drive that came with the new iMac works well, and my old drive works well when I return it to the older iMac, I conclude that there is some problem at the system/kernel level due to the different hardware. In the past I did similar things (e.g. starting a C2D machine from a Core Duo in target disk mode), so perhaps the change in architecture to the i5/i7 is too problematic? The main point: do you know of any way to get the system to rebuild for itself the proper versions of the system components when booting? Are there certain directories that I can safely delete to make that happen? Thanks

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• Can not run ifconfig like commands via browser

  - by savruk

  Problem is I cannot run "ifconfig" or similar commands via browser. Environment: Programming language : python Server : lighttpd(CGI) , running on busybox. Well machine is really small and so I am really restricted. Tried techniques: chown every script to root. But there is no differences. Why? Because lighttpd runs under another user, I mean not under root. As it is not root, when I try to run script from browser it always calls the python file with its uid. So it makes it impossible to run "ifconfig eth0 192.168.2.123" like commands via web browser. I get "ifconfig: SIOCSIFADDR: Permission denied" error. What can I do? I do not have any sudoers file, so cannot modify sudo command. Well, I don't even have "sudo" command :) Thanks for your help

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• What does "Endcode #816" stand for in Canon iR-ADV C5035 printer logs?

  - by Odin Kroeger

  We are using the Canon iR-ADV C5035. Today a worker has reported that some Word documents cannot be printed via that device (others do). I could confirm that and found that the Canon iR-ADV C5035 logs showed an "Endcode" "#816" for every print job that was not printed (whereas other print jobs show an "Encode" "OK"). Unfortunately, neither the manual that came with the Canon copy machine nor the web seems to know what this "Endcode" means. Canon support has been informed, but I'm still waiting for them to call me back. Does anyone know how I could find out what this "Endcode" stands for? Or, preferably, where I can look up the meaning of such Canon "Endcodes" in the future? Thanks in advance for any hints.

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• Looking for a USB A/B Box

  - by Kaji

  I have a laptop and a tower, and I usually like to use the laptop for my chat and other miscellaneous tasks while the tower is doing the hard work during video editing projects and such. Due to the way my desk is set up, it's kind of a stretch to reach over to the laptop's keyboard all the time, and having a second keyboard/mouse is rather cumbersome, albeit manageable if I keep the second keyboard in my lap. Does anyone make an A/B box that I can plug into the tower and the laptop so I can just flip the keyboard over to the appropriate machine as needed?

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• Ubuntu 13.04 client cannot connect to Raspbian samba share

  - by envoyweb

  I have a client Ubuntu 13.04 machine trying to connect to a server running Raspbian with samba and samba-common-bin installed on the server I can see my share and when I try to login I get this error: Unable to access location: Failed to write windows share Cannot allocate memory. I have installed ntfs-3g for the usb hard drive that already auto mounts on the server so I never had to create a directory or edit fstab. Testparm on the server states the following: [global] workgroup = ENVOYWEB server string = %h server map to guest = Bad User obey pam restrictions = Yes pam password change = Yes passwd program = /usr/bin/passwd %u passwd chat = *Enter\snew\s*\spassword:* %n\n *Retype\snew\s*\spassword:* %n\n *password\supdated\ssuccessfully* . unix password sync = Yes syslog = 0 log file = /var/log/samba/log.%m max log size = 1000 dns proxy = No usershare allow guests = Yes panic action = /usr/share/samba/panic-action %d idmap config * : backend = tdb [homes] comment = Home Directories valid users = %S create mask = 0700 directory mask = 0700 browseable = No [printers] comment = All Printers path = /var/spool/samba create mask = 0700 printable = Yes print ok = Yes browseable = No [print$] comment = Printer Drivers path = /var/lib/samba/printers [BigDude] comment = Sharing BigDude's Files path = /media/BigDude/ valid users = @users read only = No create mask = 0755 testparm on the client which is running ubuntu is as follows [global] workgroup = ENVOYWEB server string = %h server (Samba, Ubuntu) map to guest = Bad User obey pam restrictions = Yes pam password change = Yes passwd program = /usr/bin/passwd %u passwd chat = *Enter\snew\s*\spassword:* %n\n *Retype\snew\s*\spassword:* %n\n *password\supdated\ssuccessfully* . unix password sync = Yes syslog = 0 log file = /var/log/samba/log.%m max log size = 1000 dns proxy = No usershare allow guests = Yes panic action = /usr/share/samba/panic-action %d idmap config * : backend = tdb [printers] comment = All Printers path = /var/spool/samba create mask = 0700 printable = Yes print ok = Yes browseable = No [print$] comment = Printer Drivers path = /var/lib/samba/printers

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• Apache mod_proxy parameters

  - by mike

  Hi! I have a machine running Apache with mod_proxy that I'm using to proxy a local Tomcat server running on another port. The problem is that Tomcat does not support wildcard sub-domains(whole reason for using apache/mod_proxy) and our app uses the subdomain to figure out what account the data should come from. So with that said, is there a way to pass the subdomain as a url parameter via mod_proxy? For example, I have this: ProxyPass / http://example.com:8080/ In a virtual host block and I can access the site from any subdomain. Would is be possible to do something like: ProxyPass / http://example.com:8080/?subdomain=the_sub_domain_requested Thanks for any and all help... Mike

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• Dell Dimension running Fedora12 does a "Sleeping Beauty" and I am not am not a "handsome prince"!

  - by Jim Dobbs

  Dell Dimension 2350 with a Pentium IV processor and integrated video and network chips running Fedora12 does a "Sleeping Beauty" and I, apparently, am not am not a "handsome prince"! The system puts video and network to sleep and it will not wakeup. I have heard of this problem on laptops, but this is a tower. Any ideas or help is appreciated. I tried to ping the network card from another system and ping fails. The logs indicate that the system continues to be active. Pressing keyboard short-cut keys makes the disk light blink but neither the video or network card comes alive. Failing all else, are there any Linux commands that I could schedule in cron to pulse video and network adapters hourly that will keep them awake? Or, should I wait on Fedora13? Before this machine, I built a Dimension 2400 with Pentium IV and it had the same problem. Fedora9 on the same hardware is fine.

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• SSISDB Analysis Script on Gist

  - by Davide Mauri

  I've created two simple, yet very useful, script to extract some useful data to quickly monitor SSIS packages execution in SQL Server 2012 and after.get-ssis-execution-status  get-ssis-data-pumped-rows  I've started to use gist since it comes very handy, for this "quick'n'dirty" scripts and snippets, and you can find the above scripts and others (hopefully the number will increase over time...I plan to use gist to store all the code snippet I used to store in a dedicated folder on my machine) there.Now, back to the aforementioned scripts. The first one ("get-ssis-execution-status") returns a list of all executed and executing packages along with latest successful and running executions (so that on can have an idea of the expected run time)error messageswarning messages related to duplicate rows found in lookupsthe second one ("get-ssis-data-pumped-rows") returns information on DataFlows status. Here there's something interesting, IMHO. Nothing exceptional, let it be clear, but nonetheless useful: the script extract information on destinations and row sent to destinations right from the messages produced by the DataFlow component. This helps to quickly understand how many rows as been sent and where...without having to increase the logging level.Enjoy! PSI haven't tested it with SQL Server 2014, but AFAIK they should work without problems. Of course any feedback on this is welcome. 

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• TCO Comparison: Oracle Exadata vs IBM P-Series

  - by Javier Puerta

  Cost Comparison for Business Decision-makersOracle Exadata Database Machine vs. IBM Power SystemsHow to Weigh a Purchase DecisionOctober 2012 Download full report here In this research-based  white paper conducted at the request of Oracle, The FactPoint Group compares the cost of ownership of the Oracle Exadata engineered system to a traditional build-your-own (BYO) solution, in this case an IBM Power 770 (P770) with SAN storage.  The IBM P770 was chosen given it is IBM’s current most popular model, based on FactPoint primary and secondary research and IBM claims, and because at least one of the interviewed customers had specifically migrated from a P770 to Exadata, affording us a more specific data point for comparison. This research found that Oracle Exadata: Can be deployed more quickly and easily requiring 59% fewer man-hours than a traditional IBM Power Systems solution. Delivers dramatically higher performance typically up to 12X improvement, as described by customers, over their prior solution.  Requires 40% fewer systems administrator hours to maintain and operate annually, including quicker support calls because of less finger-pointing and faster service with a single vendor.  Will become even easier to operate over time as users become more proficient and organize around the benefits of integrated infrastructure. Supplies a highly available, highly scalable and robust solution that results in reserve capacity that make Exadata easier for IT to operate because IT administrators can manage proactively, not reactively.  Overall, Exadata operations and maintenance keep IT administrators from “living on the edge.”  And it’s pre-engineered for long-term growth. Finally, compared to IBM Power Systems hardware, Exadata is a bargain from a total cost of ownership perspective:  Over three years, the IBM hardware running Oracle Database cost 31% more in TCO than Exadata.

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• How to convert Windows filenames (from a checksums.md5) to *nix notation so I can use it on my shell with md5sum?

  - by Somebody still uses you MS-DOS

  I have some checksums.md5 verification files from an ntfs external drive, but using windows notation: \ instead of /, spaces between file names (not escaped), reserved shell characters (like (, &, ', to name a few). The checksums.md5 has a bunch of checksums and filenames: ;Created by program ;2010 f12f75c1f2d1a658dc32ca6ef9ef3ffc *My Windows & Files (2010)\[bak]\testing.wmv 53445e1a0821b790872e60bd7a166887 *My Windows Files' 2 (2012)\[bak]\testing.wmv 53445e1a0821b790872e60bd7a166887 *My Windows Files ˜nicóde (2012)\[bak]\testing.wmv ;Finished I want to use this checksums.md5 to verify the files that I've copied to my machine: but I'm on a Linux, so I need to convert the names inside checksums.md5 from Windows to Linux to use the md5sum utility from the shell. The first line in my example would become: f12f75c1f2d1a658dc32ca6ef9ef3ffc My\ Windows\ \&\ Files\ \(2010\)/\[bak\]/testing.wmv Is there some application for this (converting a file listing, from windows cmd notation, to linux shell notation) or will I need to create a bash script using sed that just "replaces" what is "wrong" with the filenames?

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• OS X Server - setting up a share for network home directories + fast user switching

  - by sohocoke

  I'm nearly finished setting up my Open Directory master to allow users to be managed centrally and logged in on any of the client machines at home. I found discussion suggesting that using an AFP share for the 'Users' automount would result in network users (cf. users defined locally, or Portable Home Directory users) are unable to use fast user switching, as the first user logging in would trigger the automount and mount the 'Users' share with his permissions, preventing further users from using the mount. I've also found some suggestions to configure autofs such that the 'Users' share is mounted prior to any user logging in, but not great amounts of details along these lines. I'd greatly appreciate some instructions to set up autofs - ideally, on the OpenDirectory server rather than each client's etc/fstab or equivalent location, so that it isn't required per every client machine - to get fast user switching working with network users.

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• AutoVue for Agile 20.2.2 Now Available!!

  - by Warren Baird

  We are happy to announce that AutoVue for Agile 20.2.2 is now available via the Oracle Software Delivery Cloud.   AutoVue for Agile 20.2.2 is a minor release within the 20.2 product family that is specifically targeted for users of Agile PLM 9. AutoVue 20.2.2 brings a number of improvements, including support for SolidWorks 2013, AutoCAD and Inventor 2014, SolidEdge ST5, and Cadence Allegro 16.6.   It also includes support for Adobe Illustrator CS4 and up.   Another improvement involves bringing our support for Oracle Linux and Java Virtual Machine versions in-line with Agile's support. Please see our previous post (https://blogs.oracle.com/enterprisevisualization/entry/autovue_20_2_2_is) for more details on the specifics introduced in AutoVue 20.2.2. Agile PLM 9.3.3 has also been released, which as part of its many improvements introduces support for associating AutoVue annotations with change request objects in Agile, and a preliminary solution using Augmented Business Visualization to allow the creation of change objects from within AutoVue.   Please see the Agile Transfer of Information sessions in the KM note 1589164.1 for more details. We will provide additional posts over the next couple of weeks providing more details on these improvements.  Until then, if you have any questions, let us know in the comments! 

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• Dell Latitude E6420 dual-boot Ubuntu + Windows 7 Optimus graphics problems

  - by Ryan

  I have a Dell Latitude E6420 laptop with Ubuntu 12.04 alongside Windows 7 (dual-boot) docked in a docking station with 2 DVI outputs. It took me a week of tinkering to get the dual external monitors to work in Ubuntu, and I had to disabled the "Optimus" feature in the BIOS. But now neither external monitor is detected in Windows, and the resolution is also very low. Do you know how I can successfully dual-boot Windows 7 and Ubuntu on this machine using my 2 external DVI monitors? I have an open question here too, trying to resolve this same issue: http://askubuntu.com/questions/146933/dock-with-dual-external-dvi-monitors-with-intel-nvidia-optimus

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• tcpsndbuf high fail count

  - by Matthew Crenshaw

  I've got a small setup, one machine that acts as a load balancer and two machines that do all the work. The load balancer runs nginx (static content + php proxying to workers) and mysql, the two workers run php5-fpm and memcached (pooled between workers). Here's beancounters for the balancer: tcpsndbuf 2171848 2386280 10000000 20000000 3947733 tcprcvbuf 1248288 1669504 10000000 20000000 0 Here's worker 1: tcpsndbuf 951976 1262672 20000000 40000000 0 tcprcvbuf 278528 393496 20000000 40000000 0 Here's worker 2: tcpsndbuf 989888 527472 20000000 40000000 0 tcprcvbuf 212992 452520 20000000 40000000 0 The balancer has 1GB ram, the two workers have 2GB ram each. What is eating my send buffer?

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