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  • Git pull auto complete OSX

    - by vodkhang
    Follow some instruction on this site http://denis.tumblr.com/post/71390665/adding-bash-completion-for-git-on-mac-os-x-leopard . I can do git auto complete for MAC OS. However, when I type git pull origin ma (for master), and then tab it takes a long time for git to auto complete to become git pull origin master . I think it connect to the server to get the branch, but I am not sure, is there any way to make it faster and only get the branch on local machine cd /tmp git clone git://git.kernel.org/pub/scm/git/git.git cd git git checkout v`git --version | awk '{print $3}'` cp contrib/completion/git-completion.bash ~/.git-completion.bash cd ~ rm -rf /tmp/git echo -e "source ~/.git-completion.bash" >> .profile

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  • How to change from own Internal/Extrernal DNS to use an outsourced service like DNS Made Easy?

    - by Joakim
    Our current setup is a co-located linux box with an openvz kernel with a handful virtual containers for www, mail etc. and one container run Bind9 with a split views configuration serving External and Internal DNS. The HW-Node runs a shorewall firewall and all containers uses private ip's. The box (and DNS) basically handles web and mail for a handful domains and it works well but we still think it would be a good idea to outsource the public DNS and now to my question... Although I am fairly comfortable with the server stuff and DNS, I'm far from a pro and guess I basically need some confirmation that I am thinking in the right direction in that I basically just move the content of our external view (with zone files) to the external service and keep the internal view (or actually remove the view), update the new external DNS with thier names servers, update the info at my registrar and wait for propagation or have I missed something? Maybe someone else here run something similar already and can share some exteriences? I found this question which at least confirms it can be done.

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  • Mono on Linux: Apache or Nginx

    - by Furism
    Hi, I'm developing an ASP.NET application that will be run under Linux/Mono for various reasons (mostly to stay away from IIS, quite frankly). Of course the first web server I had in mind was Apache. But Apache, for all its advantages, adds a lot of overhead. Also, the application I'm building needs to be highly scalable and performance is one of the main concern. Apache has, obviously, a very good reputation and its record speaks for itself, but I don't need things like Reverse Proxy or Load Balancing because dedicated network devices would be used for that. So those modules from Apache will never be used. So basically my question is: since Nginx seems to fit exactly needs, is there any caveat I should be aware of? For instance, is Nginx renowned to be particularity safe? When security flaws are detected, how fast are they patched? Any insight on the pros and cons of using either of those servers in conjunction with Mono is welcome.

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  • Error starting mod_wsgi

    - by Hardgood
    When I run the start-server command on mod_wsgi-experess, I get this output: Server URL : http://localhost:8000/ Server Root : /tmp/mod_wsgi-localhost:8000:0 Server Conf : /tmp/mod_wsgi-localhost:8000:0/httpd.conf Error Log : /tmp/mod_wsgi-localhost:8000:0/error_log httpd: Syntax error on line 2 of /tmp/mod_wsgi-localhost:8000:0/httpd.conf: module version_module is built-in and can't be loaded The line 2 in the httpd.conf in the tmp folder that it is referring to says the following. It was automatically created by mod_wsgi: LoadModule version_module '/usr/local/apache/modules/mod_version.so' I am running Apache 2.2.21 on CentOS 5.10. I am stumped. Any ideas how to get over this obstacle? I should mention that this is a cross-post of a StackOverflow question, after I realized that SO was probably not the best place to ask it.

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  • 32bit domU on 64bit dom0

    - by ModuleC
    I'm using 64bit Centos Dom0 with: 2.6.18-164.15.1.el5xen #1 SMP Wed Mar 17 12:04:23 EDT 2010 x86_64 x86_64 x86_64 GNU/Linux recently i migrated some 32bit Centos domUs on this node. As by specs 32bit domUs should work with 64bit dom0. DomUs are paravirtualized, and everything works, except iptables limit. Anyways runing csf on domU will return following messages in dmesg: ip_tables: (C) 2000-2006 Netfilter Core Team Netfilter messages via NETLINK v0.30. ip_conntrack version 2.4 (2080 buckets, 16640 max) - 304 bytes per conntrack ip_tables: limit match: invalid size 40 != 28 ip_tables: limit match: invalid size 40 != 28 ip_tables: limit match: invalid size 40 != 28 ip_tables: limit match: invalid size 40 != 28 ip_tables: limit match: invalid size 40 != 28 ip_tables: limit match: invalid size 40 != 28 ip_tables: limit match: invalid size 40 != 28 Doing lsmod on both dom0 and domU is listing all iptables modules required as loaded. I've found this http://www.mail-archive.com/[email protected]/msg189433.html But didn't find anything for centos on this issue. Am I missing something?

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  • Debian Lenny - network interfaces(eth) are in DOWN state

    - by pachanga
    Folks, I'm facing a very weird problem with one of my production servers(it's Debian Lenny) - after reboot network interfaces(eth0,eth1) are in DOWN state. Looks like an Intel based networking adapter is installed on the server, lspci lists it as follows: Ethernet controller: Intel Corporation Device 10c9 (rev 01) The kernel driver responsible for this adapter is "igb". I tried "modprobe -r igb && modprobe igb", network interfaces first disappear then appear, but they are in DOWN state again. What could go wrong? It used to be working just fine. How can this be fixed?

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  • exception while creating initial context

    - by Harish
    in thread "main" java.lang.NoClassDefFoundError: weblogic/kernel/KernelStatus at weblogic.jndi.Environment.<clinit>(Environment.java:78) at weblogic.jndi.WLInitialContextFactory.getInitialContext(WLInitialContextFactory.java:117) at javax.naming.spi.NamingManager.getInitialContext(NamingManager.java:667) at javax.naming.InitialContext.getDefaultInitCtx(InitialContext.java:288) I am getting this exception when I try to create a initial context to hit the weblogic server. This is the code I am trying from eclipse.I have added weblogic.jar and wlclient.jar in the classpath. Hashtable env = new Hashtable(); // WebLogic Server 10.x connection details env.put(Context.INITIAL_CONTEXT_FACTORY, "weblogic.jndi.WLInitialContextFactory" ); env.put(Context.PROVIDER_URL, "t3://localhost:7001"); env.put(Context.SECURITY_PRINCIPAL, "xxxxx"); env.put(Context.SECURITY_CREDENTIALS, "******"); return new InitialContext( env Has anyone faced this issue,How to resolve it?

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  • aTop like tool for OSX

    - by Maciek Sawicki
    I'm trying to debug some issues with my Mac. This machine is used as continuous integration server. It stops responding from time to time. I think it could be some software issue, since the machine is working (so i.e. it's not a kernel panic) - that is when I go to the server room I see the login screen and I can move the mouse. Unfortunately I can't login neither directly nor by VNC or SSH. There is a nice tool that helps in debugging this type of problem called aTop. It's like top but with history. Unfortunately it's Linux-only software. Is there any tool that is similar to aTop for OSX?

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  • Ulimit settings in Oracle 11g on Linux 5

    - by Stuart
    Is there an issue with "Ulimit -Hn" being set too low (at 1024) when (Oracle recommend 65536)? This is for Oracle 64-bit 11g on Linux 5. It is one of the settings that appears to be woefully short of its recommendation. But I am also aware that the database server in question is an Oracle Data Guard Local Standby and should only really have a connection or two from its Primary database server (to ship the redo logs across). The Local Standby database server has 'hung' about 3 times in as many months and then requires a reboot. I do not have access to this server, so rely on others to look at logs etc. The sanity check on kernel params uncovered the low value for "ulimit -Hn". Has anyone ever seen that 'low' value cause a hang or crash?

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  • Is Mac OS X open source?

    - by hasen j
    I learned recently (on superuser) that Mac OS X uses the bash shell. I also know that OS X has a UNIX core. I was searching for information about OS X and Open Source on google, but what I found was this site: http://www.opensource.apple.com/ Which seems to include the source code for OS X. For instance, one of the links reads: Mac OS X 10.5.7 Source So, is OS X open source? There's an Apple Public Source License, but I'm bad at understanding legalese. Update Extra/Bonus question: Besides the kernel, What about the various other pieces? The X server? Window Manager? File explorer? etc. What's open source and what's not?

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  • Config xampp never to cache pages from localhost

    - by Michael Mao
    Hello everyone: I am not a webmaster, and that was exactly the reason why I installed XAMPP 1.7.2 on Windows XP SP2 instead of manually configuring Apache, MySQL and PHP to cooperate each other. Now I am having to problem to disable caching pages from localhost. Some suggested just force the browser not to cache, using Firefox web developer bar or something similar; but I feel it would be better if I could configure the Apache server in XAMPP to never allow pages from localhost to be cached. I guess this is done somewhere in httpd.conf? LoadModule cache_module modules/mod_cache.so Would this module be helpful in this case? Doc here : mod_cache I am not very sure this would resolve the problem. Could anyone confirm this approach feasible? I'd like to work it out myself, given the fact that I am on the right track... Many thanks in advance

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  • How to view only Mail on shared email account?

    - by TomatoSandwich
    I have a support account which I should have access to in my Outlook 2010, however, since changing from 2003, the situation has become unusual. I used to be able to just view shared mail items in a seperate account, without it having the Calendar, Tasks and Reminders popping up in my face all hours of the day. Now, if I add the account, I get upwards of 60 task reminders that are not my personal account, and that clog up my Reminders window and task list. Is there a way to show only my Tasks and Reminders in Outlook 2010? I've tried the Advanced Filter option on the Tasks list, but if I set it to show only things from or to myself, everything disappears, or nothing disappears. I tried looking in the email account settings for something like 'Read email only' or something to do with only showing some of the modules of outlook, but it was useless.

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  • Operation System Clone from a Motherboard to Another

    - by Devian
    Lately we had an idea with my Family of building a Super Computer from Scratch. So while we were planning on building our setup, one idea came to my head that it seems possible but i want also your opinions. Lets say that we have 2 ATX Motherboards and 1 MicroATX. Motherboard Setup: 1x ASUS Rampage Extreme Black Edition 1x Intel Core i7 4960x 4x GTX Titan 8x 8GB 1866 Ram Motherboard Setup: 1x SuperMicro X9DRG-QF 2x Intel Xeon E7-8890V2 1x nVIDIA QUADRO K6000 4x nVIDIA Tesla K40 128 GB 1866 Ram And imagine a Solid State Drive with a Switch connected to both of the MotherBoards Can i edit & copy all the data of The first motherboard's RAM to The Other's to be able to continue operating my current Operation System after switching the SSD to the Second Motherboard, from the Second MotherBoard and vice versa? Les say my "Switch Application" modifies everything the Kernel needs to believe nothing happend and continuing its operation from the same point the first motherboard stopped. (Changes on the Device List, CPU Cores, Drivers... etc)

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  • How to reference other locations in making multi-boot live cd

    - by Nrew
    There is a tool in pen drive linux that allows you to boot directly with multiple iso files. And here is a sample in the menu.lst which allows you to choose which iso file you want to boot. title Fedora 13 find --set-root /Fedora-12-i686-L.iso map /ubuntu-10.04-desktop-i386.iso (0xff) map --hook root (0xff) kernel /casper/vmlinuz file=/cdrom/preseed/ubuntu.seed boot=casper persistent iso-scan/filename=/ubuntu-10.04-desktop-i386.iso splash initrd /casper/initrd.lz I'm just using it on my 8gb flash drive and the location of the iso file is in the flash drive itself. Is it possible to reference other locations. So that I could boot from it, without limitations. because the flash drive can only contain 8gb of data. Is it possible? Anyone here tried this before?

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  • How do I connect to my wireless router settings on Linux?

    - by Joshua Robison
    My network is as follows: Internet Provider's DSL modem connected to Internet Provider's router connected to My Buffalo Wireless router connected to My Toshiba Laptop via WEP network My Toshiba Laptop is running LMDE Linux Mint Debian Edition Service Pack 3 i686 kernel I have experience using various routers and their configuration settings but for some reason I can not access my wireless router. In my cromium browser I tried the following ip addresses: Standard Usual IPs : 192.168.1.1, 192.168.0.1 (connection hangs and goes no where) On the back of my router: 192.168.11.1, 192.168.11.100 (connection hangs and goes nowhere ) In some tcpip info: 192.168.24.1 (unable to connect error message) If someone could give me some terminal commands that will help me find my wireless router address or some trouble shooting ideas, I would be very thankful.

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  • No compatible network card

    - by sbintcliffe
    Motherboard: Asus K8N-E Deluxe with onboard NIC (nVidia nForce) Secondary NIC: I've tried using a standard NIC (Device Manager displays this as D-Link DFE-538TX 10/100, but under manufacturer in the General tab of the properties in Windows it states Realtek Semiconductor Corp.) I have downloaded ESXi 4.0.0 build 208167 and cooked to disc. I've booted from it, the .TGZ modules load from the yellow and grey screen, the progress bar reaches to about 60% and like a second later the screen changes and I have the following information on screen; "No compatible network adapter found. Please consult the HCG." I've checked the HCG and found that my motherboard is listed. I also get the same message with the secondary NIC. Any ideas please?

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  • php crashes with no core file and this message : apc_mmap failed

    - by greg0ire
    Description of the problem Regularly, cron php processes crash on our production server, which result in mails with the following body : PHP Fatal error: PHP Startup: apc_mmap: mmap failed: in Unknown on line 0 Segmentation fault (core dumped) I think the Segmentation fault (core dumped) should result in core files being handled by apport and then written in /var/crashes, but the files I can see there are there since yesterday, although the last crash occured today : -rw-r----- 1 root whoopsie 1138528 mai 22 04:09 _usr_bin_php5.0.crash -rw-r----- 1 frontoffice whoopsie 1166373 mai 20 18:00 _usr_bin_php5.1005.crash -rw-r----- 1 frontoffice whoopsie 81622658 mai 22 00:05 _usr_sbin_php5-fpm.1005.crash I tried to download the last one anyway, and ran gdb /usr/sbin/php5-fpm /tmp/_usr_sbin_php5-fpm.1005.crash, only to be told that the file is not a core file (its format was not recognized). Here is the server's apc configuration : cat /etc/php5/cli/conf.d/20-apc.ini extension=apc.so apc.shm_size=512M apc.ttl=3600 apc.user_ttl=3600 apc.enable_cli=1 I'm mostly worried about the apc.shm_size… isn't it too high or too low ? I understand it has to do with the size of memory segments. Question(s) What could be the problem ? How can I troubleshoot it (how can I get a valid core file ?) ? System information free total used free shared buffers cached Mem: 5081296 4354684 726612 0 374744 959968 -/+ buffers/cache: 3019972 2061324 Swap: 522236 516888 5348 cat /etc/lsb-release DISTRIB_ID=Ubuntu DISTRIB_RELEASE=12.04 DISTRIB_CODENAME=precise DISTRIB_DESCRIPTION="Ubuntu 12.04.2 LTS" php -v PHP 5.4.17-1~precise+1 (cli) (built: Jul 17 2013 18:14:06) Copyright (c) 1997-2013 The PHP Group Zend Engine v2.4.0, Copyright (c) 1998-2013 Zend Technologies php -i excerpt : Configuration apc APC Support => enabled Version => 3.1.13 APC Debugging => Disabled MMAP Support => Enabled MMAP File Mask => Locking type => pthread mutex Locks Serialization Support => php Revision => $Revision: 327136 $ Build Date => Nov 20 2012 18:41:36 Directive => Local Value => Master Value apc.cache_by_default => On => On apc.canonicalize => On => On apc.coredump_unmap => Off => Off apc.enable_cli => On => On apc.enabled => On => On apc.file_md5 => Off => Off apc.file_update_protection => 2 => 2 apc.filters => no value => no value apc.gc_ttl => 3600 => 3600 apc.include_once_override => Off => Off apc.lazy_classes => Off => Off apc.lazy_functions => Off => Off apc.max_file_size => 1M => 1M apc.mmap_file_mask => no value => no value apc.num_files_hint => 1000 => 1000 apc.preload_path => no value => no value apc.report_autofilter => Off => Off apc.rfc1867 => Off => Off apc.rfc1867_freq => 0 => 0 apc.rfc1867_name => APC_UPLOAD_PROGRESS => APC_UPLOAD_PROGRESS apc.rfc1867_prefix => upload_ => upload_ apc.rfc1867_ttl => 3600 => 3600 apc.serializer => default => default apc.shm_segments => 1 => 1 apc.shm_size => 512M => 512M apc.shm_strings_buffer => 4M => 4M apc.slam_defense => On => On apc.stat => On => On apc.stat_ctime => Off => Off apc.ttl => 3600 => 3600 apc.use_request_time => On => On apc.user_entries_hint => 4096 => 4096 apc.user_ttl => 3600 => 3600 apc.write_lock => On => On php -m [PHP Modules] apc bcmath bz2 calendar Core ctype curl date dba dom ereg exif fileinfo filter ftp gd gettext hash iconv imagick intl json ldap libxml mbstring memcache memcached mhash mysql mysqli openssl pcntl pcre PDO pdo_mysql pdo_pgsql pdo_sqlite pgsql Phar posix Reflection session shmop SimpleXML soap sockets SPL sqlite3 standard sysvmsg sysvsem sysvshm tidy tokenizer wddx xml xmlreader xmlwriter zip zlib [Zend Modules] ulimit -a core file size (blocks, -c) 0 data seg size (kbytes, -d) unlimited scheduling priority (-e) 0 file size (blocks, -f) unlimited pending signals (-i) 39531 max locked memory (kbytes, -l) 64 max memory size (kbytes, -m) unlimited open files (-n) 1024 pipe size (512 bytes, -p) 8 POSIX message queues (bytes, -q) 819200 real-time priority (-r) 0 stack size (kbytes, -s) 8192 cpu time (seconds, -t) unlimited max user processes (-u) 39531 virtual memory (kbytes, -v) unlimited file locks (-x) unlimited

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  • PHP 5.2.11: Unable to load dynamic library complaints

    - by OldTroll
    I installed PHP 5.2.11 and upon enabling the php_mssql.dll module (and the obligatory restart of the services) started receiving warnings about not being able to load the dynamic library. The operating environment is IIS ISAPI under Windows 2003 R2. Here is the list of things that were checked File Exists in \PHP\ext directory and has the same timestamp as the other distribution delivered libraries. Permissions are correct to the file. Other extensions are enabled and functioning with identical permissions. ntwdblib.dll has been copied from a SQL Server 2005 installation (per php.net's requirements for the module) Other modules before and after the php_mssql entry are working. I've also stripped down and remove all non-essential references with detectable improvements. I turned up logging and enabled all the error logs in the php.ini, nothing is generated by the logs. Searching Google has turned up a slew of closed/unsolved bug reports on php.net and some miscellaneous near-matches, none of which have really addressed the problem or lead to any inspirations.

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  • How to fully use the 4G in my Laptop under Ubuntu 9.10 - 32-bit

    - by jfmessier
    I have a Toshiba A100, which I upgraded to 4G of RAM. The hardware startup indeed shows 4G of RAM, and I recently installed Windows 7, just to see how it behaves on it. So far so good, it displays 4G of RAM. Not that I tried to use it all, but it displays it. Previously under XP, I also would see 4G of RAM. But under Ubuntu 9.10 (32 or 64 bits), it only displays 2.9 G of RAM. And my kernel is the "pae" compiled one, which is supposed to do the trick to work around the 32-bit CPU limitation. How can I get Ubuntu to fully use my 4G of RAM ?

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  • PHP framework question

    - by iconiK
    I'm currently working on a browser-based MMO and have chosen the LAMP stack because of the extremely low cost to start with in production (versus Windows + IIS + ASP.NET/C# + SQL Server, even though I have MSDN Universal). However I will need a PHP framework for this as it's no easy task. I am not restricted by anything other than the ability to run on Linux, as I will use a dedicated cloud hosting solution (and a VMWare image for development) and can configure it as needed. In no specific order: It has to be easily scalable; this is crucial. If the game becomes a steady success it will eventually outgrow the server beyond what the host provides and would have to be moved to several load-balanced servers. It is crucial that this can be done with minimum effort. I do know this might require following strict conventions, so if you know of any for your suggested framework please explain what would be needed. It has to provide modules for all the core tasks: authentication, ACL, database access, MVC, and so on. One or two missing modules are fine, as long as they can easily be written and integrated. It should support internationalization. I think there is no excuse for any web framework not to provide means of translating the application and switching between languages without a lot of effort from the programmer. Must have very good community support and preferably commercial support as well. Yes, I do know QCodo/QCubed is so nice, but it is not mature enough for this task. Smooth AJAX support is required. Whether the framework comes with AJAX-capable widgets or has an easy way of adding AJAX is not relevant, as long as AJAX is easily doable. I plan to use jQuery + Dojo or one of them alone - not exactly sure. Auto-magically doing stuff when it improves readability and relieves a lot of effort would be especially nice if it is generally reliable and does not interfere with other requirements. This seems to be the case of CakePHP. I have read a lot of comparisons and I know it's a really hot debate. The general answer is "try and see for yourself what suits you". However, I can't say it is easy for this task and I'm calling for your experience with building applications with similar requirements. So far I'm tied up between Zend and CakePHP by the general criteria, however, all well-known frameworks offer the same functionality in some way or another with different approaches each with it's own advantages and disadvantages. Edits: I am kinda new to MVC, however, I am willing to learn it and I don't care if a framework is easier for those new to MVC. I have lots of time to learn MVC and any other architectures (or whatever they're called) you recommend. I will use Zend as a utility "framework", even though it's just a collection of libraries (some good ones though, as I have been told). Current PHP contenders are: CakePHP, Kohana, Zend alone.

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  • Raw socket sendto() failure in OS X

    - by user37278
    When I open a raw socket is OS X, construct my own udp packet (headers and data), and call sendto(), I get the error "Invalid Argument". Here is a sample program "rawudp.c" from the web site http://www.tenouk.com/Module43a.html that demonstrates this problem. The program (after adding string and stdlib #includes) runs under Fedora 10 but fails with "Invalid Argument" under OS X. Can anyone suggest why this fails in OS X? I have looked and looked and looked at the sendto() call, but all the parameters look good. I'm running the code as root, etc. Is there perhaps a kernel setting that prevents even uid 0 executables from sending packets through raw sockets in OS X Snow Leopard? Thanks.

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  • Node.js server crashes , Database operations halfway?

    - by Ranadeep
    I have a node.js app with mongodb backend going to production in a week and i have few doubts on how to handle app crashes and restart . Say i have a simple route /followUser in which i have 2 database operations /followUser ----->Update User1 Document.followers = User2 ----->Update User2 Document.followers = User1 ----->Some other mongodb(via mongoose)operation What happens if there is a server crash(due to power failure or maybe the remote mongodb server is down ) like this scenario : ----->Update User1 Document.followers = User2 SERVER CRASHED , FOREVER RESTARTS NODE What happens to these operations below ? The system is now in inconsistent state and i may have error everytime i ask for User2 followers ----->Update User2 Document.followers = User1 ----->Some other mongodb(via mongoose)operation Also please recommend good logging and restart/monitor modules for apps running in linux

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  • Apache 2.2 on Mountain Lion ignoring ProxyPass and sending request to DocumentRoot

    - by James H
    I have sickbeard running at 127.0.0.1:8081/sickbeard ProxyRequests Off ProxyPass /sickbeard http://127.0.0.1:8081/sickbeard ProxyPassReverse /sickbeard http://127.0.0.1:8081/sickbeard in httpd.conf And yet when I try and access http://example.com/sickbeard/ it gives me a 404, with this in the error log. File does not exist: /Library/Server/Web/Data/Sites/Default/sickbeard Which I think means it's ignoring the ProxyPass and ProxyPassReverse directives? Anyone know why this may be? For what it's worth, this setup used to work under Lion. I have the following modules loaded: LoadModule proxy_module libexec/apache2/mod_proxy.so LoadModule proxy_connect_module libexec/apache2/mod_proxy_connect.so LoadModule proxy_ftp_module libexec/apache2/mod_proxy_ftp.so LoadModule proxy_http_module libexec/apache2/mod_proxy_http.so LoadModule proxy_scgi_module libexec/apache2/mod_proxy_scgi.so LoadModule proxy_ajp_module libexec/apache2/mod_proxy_ajp.so LoadModule proxy_balancer_module libexec/apache2/mod_proxy_balancer.so Thanks for your time!

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  • nsclient++ intermittent connection refused on same subnet

    - by jshin47
    I have setup Nagios and nsclient++ on a number of my Windows servers. They are all in the same subnet so no routing or firewall stuff is taking place in between the endpoints, and I have verified that the firewalls on the servers are not causing trouble. The problem is that the scheduled checks sometimes fail with "connection refused" and sometimes work! It is a frustrating problem to resolve because I do not know what to look for. One place I did look is in the nsclient++ logs, where I am seeing this recurring error: ...\trunk\modules\CheckSystem\PDHCollector.cpp:148: Failed to query performance counters: \238... This sounds promising, but I couldn't find much on Google about this error as it pertains to NSClient++

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  • Lazy umount or Unmounting a busy disk in Linux

    - by deed02392
    I have read that it is possible to 'umount' a disk that is otherwise busy by using the 'lazy' option. The manpage has this to say about it: umount - unmount file systems -l Lazy unmount. Detach the filesystem from the filesystem hierarchy now, and cleanup all references to the filesystem as soon as it is not busy anymore. This option allows a "busy" filesystem to be unmounted. (Requires kernel 2.4.11 or later.) But what would be the point in that? I considered why we dismount partitions at all: To remove the hardware To perform operations on the filesystem that would be unsafe to do while mounted In either of these cases, all a 'lazy' unmount serves IMHO is to make it more difficult to determine if the disk really is dismounted and you can actually proceed with these actions. The only application for umount -l seems to be for inexperienced users to 'feel' like they've achieved something they haven't. Why would you use a lazy unmount?

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