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  • How to set up Heartbeat to run a service only at one node

    - by Jon Skarpeteig
    I have two Ubuntu 12.04 servers, which run mysql in a master-master setup, with mmm as manager. How can I set up heartbeat to make sure that mmm only runs at one node at the time? *Edit to explain more clearly My setup: ---------VIP (10.0.0.123)------ | | Node1 Node2 Where bot Node1 and Node2 run: Mysql Multi-Master Replication Manager for MySQL (mmm) Heartbeat I only want a single write enabled mysql node, and I can only have one mmm running at the time, else I'll get collision between the managers.

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  • Upstart script not working on Ubuntu

    - by Holy Crap
    I'm trying to write an upstart script to start orbited on startup. The script is as follows: #orbited start on startup stop on shutdown script exec /usr/local/bin/orbited --config=/etc/orbited.cfg end script When I run upstart orbited I get something like this: orbited start/running, process 605 But when I run status orbited right after doing that I get: orbited stop/waiting The script fails to start even though it says it's running. Any ideas? Thanks!

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  • Windows Registry creating users

    - by Xaver
    can i create local users just using windows registry? i write the programm wich help me to migrate my from one computer to another. When i work with domain user i can save it settings with windows registry and saving ProfileImagePath folder. now i want to save local users by this way.

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  • File Locked on Flash Drive

    - by AtomFury
    I'm completely frustrated. I'm an owner of a OCZ 8GB Rally2 which I've used flawlessly for about 4 months now, and all of a sudden this week I begin getting errors telling me that I can't delete a file due to "make sure the disk is not write-protected, full or and the file is not in-use" dialog. Here's what I've tried: Deleting the file using FileASSASSIN (it's worked on everything else but files on this darn flash drive) Formatting the flash drive and then restoring the backed up information (I format to NTFS, FYI) Any suggestions on what to do?

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  • Is there a debian lenny patch to allow apt-get to work with sftp?

    - by MiniQuark
    I would like to write things like this in /etc/apt/sources.list: deb sftp://[email protected]/path other stuff When I try this, apt-get complains that there is no sftp method for apt: # apt-get update E: The method driver /usr/lib/apt/methods/sftp could not be found. Has anyone written a patch to add the sftp method for apt? All I could find in Google was this spec for Ubuntu. Thanks for your help.

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  • Is adding users to the group www-data safe on Debian?

    - by John
    Many PHP applications do self-configuration and self-updating. This requires apache to have write access to the PHP files. While chgrp'ing them all to www-data appears like a good practice to avoid making them world writable, I also wish to allow users to create new files and edit existing one. Is adding users to the group www-data safe on Debian? For example: 775 root www-data /var/www 644 john www-data /var/www/johns_php_application.php 660 john www-data /var/www/johns_php_applications_configuration_file

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  • taskkill - end tasks with window titles ending with a specific string

    - by DBZ_A
    I need to write a batch program to end all MS office communicator tasks with window titles (usually ending with pattern "- Conversation" . I tried taskkill /FI "WINDOWTITLE eq *Conversation" /IM communicator.exe but the wildcard pattern starting with a '*' does not seem to work. Gives the folowing error ERROR: The search filter cannot be recognized. any suggestions for a workaround would be greatly appreciated!

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  • Do you know of any alternative to "Google App Engine"?

    - by brilliant
    On their presentation of "Google App Engine" Google team members boldly said: "You write a code and we will run it for you". Then the "Google App Engine" was launched and it still does its job quite successfully - "Google App Engine" runs millions of applications of different sizes belonging to different users completely free!!! Now, here is the question: Do You know of any alternative to GAE? Have You ever even heard of any such service out there that would run Your Python code for free?

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  • Adding autocomplete options to auctex C-c C-e?

    - by Seamus
    When I'm using auctex with emacs to write LaTeX documents, I would like to be able to add a couple more options to the list of environment types that auctex "recognises" and can autocomplete, namely Theorem, Lemma, Proof, itemize* and a couple of others. Which variable to I need to edit? I have played around in customize-apropos LaTeX and auctex, but I haven't found it. (lisp code snippet to add to my .emacs would be preferred, I don't quite understand the syntax yete)

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  • Problem with slow hard disk

    - by Makis Arvin
    We bought some new PCs in my company with the new iCore 7 and 8GB memory and the following hard disk: WESTERN DIGITAL WD8000AARS 800GB CAVIAR GREEN SATA2 The problem we have is that after installing windows XP64 SP2 the write speed of the hard disk is extremely low!. The windows system monitor shows that the Average Disk queue length is always at 100% and a winzip extract of 350mb takes about 8min. Is there any idea on where to start looking for the cause of that? Thanks

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  • Git init - .git: Permission Denied

    - by Gcoop
    Hi All, I am trying to initiate git on my remote server using ssh. When I run git init On the server in a folder I have write permissions to I get the following error. .git: Permission denied Do I need to assign any other permissions on that folder to be able to create the repository? Thanks

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  • Formatting 1TB External Drive - Mac/PC

    - by The Woo
    We have 1 mac user in a PC environment... and I have bought a 1TB WD external hard drive and need to format it so that both PC and Mac can read/write to it. Doing this from the mac should be easy, but I do not know where to format the drive from, and what is the best option to format it to. Thanks.

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  • How to remove fastaddressbar?

    - by deadfish
    somehow I downloaded and installed spyware or malware. I do not know. I know that if I write somethin in field where you put as a website link I get web engine results but not by google but fastaddressbar.. It is part of websearch toolbar. Most of them was blocked and added to quarantine by my antivirus comodo however I still do not know how restore fast search in firefox to get results from google. Please help :(

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  • Windows 2003/IIS6 - Unexpected Error: C0000005

    - by Chirans
    Our event logs are full of these errors Unexpected error. A trappable error (C0000005) occurred in an external object. The script cannot continue running. We have tried in various ways but could not stop this error. After continuous errors, the IIS hangs up. We are also getting another error, Warning: IIS log failed to write entry. Please help me with the solution.

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  • Deleting another user's diretories from my own

    - by kwatford
    I am a non-root user, and have made a directory into which other users in my group can write. The directory is setgid, so files and directories within it have the same group. I can delete files placed into this directory, but if a user creates a subdirectory with files in it, I can't seem to delete those. Is there something special I can do (other than, say, bothering the user in question or the sysadmin about it) to get rid of this subdirectory?

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  • Suggestions for splitting server roles amongst Hyper-V virtual servers / RAID6 or RAID10? / AppAssure

    - by Anon
    We have 2 Hyper-V hosts at present running 1 virtual server that was converted from a physical box running all roles. My plan is to split the roles over various virtual machines, upgrading to the latest software versions as I go, and use the backup server as a standby in case the main server fails. AppAssure backup software has a feature called Virtual Standby, so the VHD's can be ready to be fired up on the backup server if necessary. Off-site backups will be done via external USB drive for now. I'm just seeking some input/suggestions into how I'm planning to split the roles out amongst various virtual servers. Also, I'm curious how to setup the storage on the servers. We do not have any NAS's, SAN'S or any budget for this. What would the best RAID level be to use? I'm thinking either RAID6 (which is currently used) however I'm concerned about the write speeds, or RAID10 but again I'm worried that I can only lose 1 drive (from the same mirror) as opposed to any 2 with RAID6. I realise I have a hot swap for this, but what if a further drive fails during a rebuild? Is the write penalty of RAID6 worth the extra reliability over RAID10? Or will it be too slow with all the roles I am planning, therefore RAID10 is my only real option? The reason for the needed redundancy is I am the only technician and I'm not always on-site. Options I've considered: 1) 5 drives in RAID6 set, 200gb for host OS, rest for VM storage. 1 drive for hot swap - this is how it is currently setup 2) 4 drives in RAID10 set, 200gb for host OS, rest for VM storage. 2 drives for hot swap 3) 4 drives in RAID10 set for VM storage, 2 drives in RAID1 set for host OS. No drives for hot swap - While this is probably the best option with the amount of drives I have, I don't like the idea of having no hot swap 4) 3 drives in RAID6 set for VM storage, 2 drives in RAID1 set for host OS. 1 drive for hot swap All options give us enough storage capacity for our files, etc. We don't have any budget for extra drives or extra hot swap HD chassis for the servers. We have about 70 clients and about 150 users. MAIN SERVER Intel Xeon 5520 @ 2.27 GHz (2 processors) 16GB RAM 6 x 1TB Seagate Barracuda ES.2 Enterprise SATA drives Intel SRCSATAWB RAID controller Virtual machine workload using Hyper-V on Windows Server 2008 R2: DC01 - Active Directory Domain Controller / DNS server / Global catalog - 1GB RAM DC02 - Active Directory Domain Controller / DNS server / Global catalog - 1GB RAM Member Server - DHCP server, File server, Print server - 1GB RAM SCCM Member Server - 4GB RAM Third Party Software Member Server - A/V server, Ticketing software, etc - 4GB RAM Exchange 2007 - 4GB RAM - however we are probably migrating to a hosted solution, therefore freeing up resources BACKUP SERVER Intel Xeon E5410 @ 2.33GHz (2 processors) 16GB RAM 6 x 2TB WD RE4 SATA drives Intel SRCSASRB RAID controller Virtual machine workload using Hyper-V on Windows Server 2008 R2: AppAssure backup software - 8GB RAM

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  • Do Windows Vista/7 have memory protection?

    - by winnewb
    Is it possible for a program to access another program's memory directly and read from (or write to) it, or to "inherit" the old contents of memory reclaimed from another program? (ie if it doesn't zero out memory before using it and just reads from unitialized memory directly)

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  • Drupal on an NFS share has terrible performance

    - by Marcus
    We have a setup where a Drupal 7 site with the following setup - a VMware ESXi 4.1 host server running a web vm and an NFS VM. The web VM is using Apache and mod_php. The site is still in development thus we have to turn off all forms of caching due to the frequently-updated files. Each page request takes around 15-20 seconds to complete. Profiling the PHP code shows that the vast majority of time (normally over 90%) is taking by all the is_dir(), is_file() function calls that load up the modules. I've increased PHP's realpath cache size to several megs and an strace shows that the lstat calls then drop from over 200 to around 6 and stat() decreases a bit (around 600 calls). However, while this has shaved off quite a bit of time, I am simply unable to break past the 10 second per request barrier. Is there a way to get better performance out of this setup that doesn't involve caching? Configs and stats: VMs: web - Centos 6 64bt, 2.5GB RAM, normal CPU/HD prioritisation nfs - Centos 6 64bt, 2GB RAM, normal CPU priority, high HD priority PHP: 32M realpath cache size (it's this high for testing purposes) NFS: ~]# egrep -v '#|^$' /etc/nfsmount.conf [ NFSMount_Global_Options ] Defaultvers=4 Ac=False Rsize=32k Wsize=32k Bsize=32k Reading speeds via NFS are not an issue a dd of a 100M test file using 32k blocks returns: 3200+0 records in 3200+0 records out 104857600 bytes (105 MB) copied, 1.84984 s, 56.7 MB/s real 0m1.857s user 0m0.007s sys 0m0.330s Strace on Apache process with empty realpath cache: % time seconds usecs/call calls errors syscall ------ ----------- ----------- --------- --------- ---------------- 50.78 1.157452 337 3434 28 stat 32.58 0.742656 628 1182 425 open 9.29 0.211788 762 278 1 lstat 3.17 0.072322 0 237865 write 2.45 0.055839 490 114 13 access 0.45 0.010262 43 237 brk 0.34 0.007725 10 811 74 read 0.28 0.006340 9 679 fstat 0.22 0.005069 18 281 poll 0.20 0.004533 6 698 getdents 0.09 0.001960 10 190 mmap 0.05 0.001065 14 74 accept4 0.04 0.001000 333 3 chdir 0.03 0.000750 4 190 munmap 0.01 0.000339 0 836 close 0.01 0.000247 3 75 writev 0.00 0.000068 0 611 fcntl 0.00 0.000063 1 77 shutdown 0.00 0.000000 0 1 lseek 0.00 0.000000 0 5 rt_sigaction 0.00 0.000000 0 1 rt_sigprocmask 0.00 0.000000 0 3 setitimer 0.00 0.000000 0 5 socket 0.00 0.000000 0 5 5 connect 0.00 0.000000 0 74 getsockname 0.00 0.000000 0 15 setsockopt 0.00 0.000000 0 5 getcwd 0.00 0.000000 0 1 futex ------ ----------- ----------- --------- --------- ---------------- Strace after realpaths are cached % time seconds usecs/call calls errors syscall ------ ----------- ----------- --------- --------- ---------------- 60.14 1.371006 484 2831 28 stat 31.79 0.724705 627 1155 425 open 3.53 0.080354 0 237865 write 2.65 0.060433 530 114 13 access 0.43 0.009913 99 100 brk 0.38 0.008730 11 804 74 read 0.35 0.007910 12 675 fstat 0.30 0.006775 10 654 getdents 0.13 0.003065 11 281 poll 0.09 0.002000 333 6 1 lstat 0.07 0.001545 2 807 close 0.05 0.001063 14 74 accept4 0.04 0.001000 6 179 mmap 0.02 0.000404 2 179 munmap 0.01 0.000271 4 75 writev 0.01 0.000212 0 611 fcntl 0.01 0.000129 2 77 shutdown 0.00 0.000022 0 74 getsockname 0.00 0.000000 0 1 lseek 0.00 0.000000 0 5 rt_sigaction 0.00 0.000000 0 1 rt_sigprocmask 0.00 0.000000 0 3 setitimer 0.00 0.000000 0 3 socket 0.00 0.000000 0 3 3 connect 0.00 0.000000 0 15 setsockopt 0.00 0.000000 0 5 getcwd 0.00 0.000000 0 3 chdir ------ ----------- ----------- --------- --------- ---------------- Mount: nfs.xxx.xxx.xxx:/path/to/website/files on /path/to/website/files type nfs (rw,hard,intr,noac,vers=4,addr=xx.xx.xx.xx,clientaddr=xx.xx.xx.xx) Any help is, naturally, appreciated.

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  • Bash Shell Scripting - How to iterate through directories, and copy and rename files?

    - by Cypher
    I have a directory setup as follows: /hosted/partner1/logo.png /hosted/partner2/logo.png /hosted/partner3/logo.png /hosted/partner4/logo.png /hosted/partner5/logo.png ..etc. I want to write a script that can COPY those files to a different location, with a different file name, like this: /partners/partner1.png /partners/partner2.png /partners/partner3.png ..etc. Any ideas? I'm not so great with shell scripting and there are a lot of files that I need to migrate to a single directory...

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