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Search found 50243 results on 2010 pages for 'application switcher'.

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• High Availability Clustering and Virtualization

  - by tmcallaghan

  I'm trying to understand how the various virtualization vendors (specifically Amazon EC2, but also VMware and Xen) enable software vendors to provide a real HA solution in the environment where the servers are virtualized. Specifically, if I'm running any HA application (exchange, databases, etc) I need to ensure that my redundant virtual "servers" aren't located on the same physical server. Using in-house virtualization solutions (VMware, Xen, etc) I can provision accordingly as well as check the virtual - physical arrangement. I could, however, accidentally "vmotion" to the same physical hardware. With EC2, I don't even have the ability at provision time to select different physical servers. Since their Cluster Compute Instances are 1 virtual server per physical server it seems to be the only way to guarantee I don't have a false sense of redundancy. Any ideas or thoughts would be helpful. What are others doing about this problem? If the vendors provided an API where I could get something as simple as a unique physical system identifier I could at least know if I'm going to have an issue. -Tim

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• Java and Sendmail HELO requires domain address

  - by ealgestorm

  I am trying to set up emailing from a java web application hosted on a linux server (Cent OS) in apache. Sendmail is working fine from the command line as root on localhost but when trying to send emails from the java web app (also on the same server from localhost) the following java exception is thrown. 501 5.0.0 HELO requires domain address EDIT: I have read that some people have found this is due to an incorrect hosts entry currently the hosts file contains 127.0.0.1 Centos-VPS localhost.localdomain localhost and i'm not sure what the Centos-VPS bit at the start is for but this is a clients hosted server so don't really want to break stuff EDIT see the RFC is helpful ... 501 Syntax error in parameters or arguments Now I know what the problem is! (note the sarcasm people.)

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• minimum required bandwidth for remote database server

  - by user66734

  I want to build a small warehousing application for my company. We have a central warehouse which distributes to 8 sales points across the country. They insist on an in-house solution. I am thinking to setup a central mySQL db Linux server and have the branches connect to it to store sales. Queries to the db from the branches will be minimum, maybe 10 per hour. However I need all the branches to be able to store each sale data ( product ID, customer ID ) in the central db at peak time at most once every five minutes. My question is can I get away with simple 24mbps/768kbps DSL lines? If not what is the bandwith requirement? Can I rely on a load balancing router to combine additional lines if needed? Can you propose some server hardware specs?

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• Lightweight alternative to R for RHEL?

  - by Eric Rath

  I want to use R for some statistical analysis of logfile information, but found that even the "limited" R-core RPM has a lot of dependencies not already installed. I don't want to install so many packages for a peripheral need. Are there lightweight alternatives for simple statistical analysis on RHEL 6? I have an R script that accepts on stdin a large set of values -- one value per line -- and prints out the min, max, mean, median, 95th percentile, and standard deviation. For more context, I'm using grep and awk to find GET requests for a particular path in our webserver log files, get the response times, and calculate the metrics listed above in order to measure the impact on performance of changes to a web application. I don't need any graphing capabilities, just simple computation. Is there something I've overlooked?

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• Disable incremental search in firefox (and everything else!)

  - by Alan Curry

  All I find from googling "disable incremental search" is a bunch of people telling me how great incremental search is. It isn't. Firefox has the worst version of it, jumping around and making me lose my place because of a search I haven't even finished typing yet. I don't want the window scrolling up and down without my say-so. It would be nice if I could search with regular expressions, like text search has been done in every non-toy application since ed. But the jumpiness of the window is the overriding concern. How can this evil be defeated?

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• Where does Skype save its chat history & contacts?

  - by user4796

  I'm aware that there is a main.db file that is stored in a Windows directory. On XP: C:\Documents and Settings\<windows user>\Application Data\Skype\<username> But I just downloaded Skype onto my Android and noticed that all chats are sync'd. So to me, this suggests that the main.db file is not the only storage being used (because it is obviously not on my phone). Are contacts and chat history stored in my online Skype account? Does anyone know where I can find more information about this? I read this thread: Does skype automatically save chat history to the cloud? And how do you explain the sync'd chats?

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• Windows XP alt-tab: How to restrict options to certain applications, in certain order and exclude others?

  - by Rob

  In Windows XP Alt-tab keypress sequence to select applications, how can I ensure that certain applications always appear, in a certain order, with others always excluded? Background for asking is that most XP-based machines that I am working with on a shop floor present the list of shortcuts in a certain order and certain applications. There is one machine however, that displays an additional application. This is a hindrance to the users of the machines, as the nature of their work is routine and this variation disrupts the remembered sequence, "disrupts their flow". Thoughts? Being a good superuser, I research first before asking, and I found: Applications randomly alt-tab? (especially full screen games) Restore Alt-Tab behavior so that minimizing an app once again moves it to the end? (2. looks close to the control I need, but would need more finer, preciser control over what appears in the selection). Suggestions? (Thanks in advance.)

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• Dictionary-based text auto-completion in Windows (i.e. Mozilla Thunderbird e-mail client)?

  - by None

  Most programmer's text editors and IDEs have it, automatic completion of the first few characters (letters) of a keyword or function name. Also, most address bars or search fields feature this (like the tag input below the posting form). I would like the same for a few, often-occuring words in business correspondance. Since I could not find an extension for the application in question, Mozilla Thunderbird, I would like to know if there are applications or methods that suggest the complete words from a dictionary like sup per eruser erfluent PS: Here's an article on Wikipedia: Word completion Here's a product for $25: Type Booster Ideally, the solution is free.

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• High system cpu load (%sys), system locks

  - by Mark

  For the last two weeks we are having intermittent severe spikes in system cpu usage (shown as %sys), which last for maybe half a minute, locking most processes, including ssh. I've been trying to figure this out, but atop doesn't show anything relevant (system usage for processes it shows is insignificant), spikes are intermittent and I could not reproduce the spike using any workload for the web application this webserver hosts. If you have any ideas on how to debug high %sys and (sometimes) %si CPU usage, please share them. System specs (don't know if any of this is relevant): Dedicated server, CentOS 6, core i7 950, consistent 4 to 8 GB RAM free at any time, hard drives are in RAID-1. Additional info: dmesg output doesn't change between spikes /var/log/messages doesn't change between spikes Here is cat /proc/vmstat Here is output of mpstat 1 during a typical spike Add 07.11.11: looks like simple reboot restored system state, and we might never know what caused the disturbance in first place.

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• HAproxy to web host sub directory?

  - by daemonza

  Hi for reasons outside my control, I need to load balance two servers, that run a non-virtual host enabled app on IIS. Normally in HAProxy I would load balance servers(apache, tomcat, etc) like this : acl is_www_example_com hdr_end(host) -i www.example.com use_backend www_example_com if is_www_example_com backend www_example_com balance roundrobin cookie SERVERID insert nocache indirect option httpchk HEAD / HTTP/1.0 option httpclose option forwardfor server node1 192.168.1.1:80 cookie node1 server node1 192.168.1.2:80 cookie node1 Which will route to the node 1 and node 2 server and serve up the virtual host site. if I need to route to www.example.com/application/data How would I be able to do it, with the above example, if at all even possible?

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• Measuring custom statistics with sar

  - by Will Glass

  I have a server application which I think is leaking file handles. I want to track the usage of file descriptors over time on my Linux (ubuntu) server. I've figured out that I can track the number of file descriptors in use by a process with lsof -p `pgrep the-process-name` | wc -l Since I'm already using sysstat and sar to track various metrics, I thought it'd be nice to display with sar. I want to measure this every 10 minutes. Is it possible to add a custom metric to sar? Then I can easily report it out. If not, I'll write a simple cron job to collect this data and store it separately in a log file.

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• How to share Opera extensions preferences between my two computers ?

  - by Riduidel

  Well, the title is quite unambiguous. However, let me clarify it even more. Starting with Opera 11, there now are Opera extensions, which are compliant to W3C widget specification. This allows us to use it on whichever browser supports their (well, currently, only Opera does). Anyway, suppose I have two computers, each one using Opera. How could I possibly synchronize used extensions and their preferences ? With Opera Link ? I didn't saw any kind of extension sharing in it With Dropbox/any other file sharing application ? If so, how could I do that ?

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• Mix content warning on ASPX page

  - by Amit

  Hi, We have started receiving the mixed content warning on ASPX pages on our secured site. We do not have any mix content, we load all our JS, Images, CSS and ASPX files using HTTPS. I dont know why we have started receiving these warnings now. The latest thing which we have added is the third party control for Dialog boxes from Essential Object. We are previously using their Menu control but added dialog box recently. Also we have made our application browser compatible. I feel the reason is something between these two points. Can anyone suggest any solution or any workaround if they know any or have used Essential Object controls and faced simililar issue? Essential object is saying it is not their problem. The mix content warning appears any time and not specifically when the Essential Control dialog box popsup, thats why I am bit confused. Any help is highly appriciated. Thanks.

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• rsync: files copied with hidden attribute

  - by haritan

  I run a backup from Windows 7 machine to Mac machine running Mountain Lion using rsync that is packaged in DeltaCopy application. I can't use DeltaCopy interface because the destination is a mapped drive (Mac's samba drive). So here is my setup: I have a folder in Mac that is the destination folder and I share this folder via Samba share. On windows machine, I map this samba share to a drive (let's say M:/) I run rsync: rsync -arv --delete "/cygdrive/C//origin/" "/cygdrive/M//mybackup/" it runs fine except that all files on the destination are hidden. Anyone has an idea on what's happening here? I really appreciate any feedback. Thank you.

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• Is it possible to have a cell in table1 "point to" a cell in table2?

  - by Lewray

  I have a hierarchical structure in a database driven software application. Each row in parentTable 'owns' a number of rows in childTable. If the childTable does not have a value set in columnA then it should return the value specified in the appropriate row of parentTable columnB. Is it possible to implement a pointer or cell reference somehow so that I do not have to copy values from parent to child. (A change in parent could result in a large number of changes in child). If this is not possible, could anyone suggest a different approach?

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• Is my laptop good enough to support my development needs? [closed]

  - by KodeSeeker

  I have an ASUS Pentium-R Dual Core CPU running at 2.20Ghz. It has 4 gb of built in ram, currently running a 64 bit Windows 7 . I just started graduate school and Im wondering whether I should go in for a new laptop or just repair the nagging battery on my current one. My requirements include - -Ability to support IDE's - I may end up running Eclipse, Visual Studio's and the like to help with my work. - Ability to run multiple VM's (not concurrently). Im currently running a Ubuntu 12 and 9 as VM's (not sure if this is overloading the system) - I'm a non gamer so I really dont care about a minor glitch caused by running a uber heavy game. -In addition I will have heavy use of Office Application Software and will be using my computer to watch movies and stream media. Looking forward to your replies and suggestions!

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• Enterprise Data Center System Admin/Engineer to Server Ratio

  - by Bob

  I know there have been similar questions asked over the last few months however looking at a Data Center Operations and know there are some really smart people out there that might be able to help. Looking for some staffing best practices based on first hand experience and was hoping that there is some experience in this area that can provide "best practice" application: Three High Availability (99.99% plus) Enterprise Level Data Centers geographically dislocated, one manned 24x7x365, one lights out, one co-location running HOT-HOT-HOT supporting a global community. More than 2,000 operating systems consisting of 95% Windows, 5% Linux and Solaris, 45% virtualized, more than 100TB storage. No desktop support, no Network Administration (administrated separately), running N+1 and serving more than 250 Billion page views annually. Based on experience what has been your experience with Server to "Data Center System Administrator/Engineer" ratio? Thanks in advance for your responses.

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• IIS 6 is no longer installed after computer restart.

  - by jarrettcoggin

  I was doing some maintenance on a build server at work and I changed some various settings (registry settings for custom applications, user permissions, etc.), then I restarted the machine. When the machine came back up, I couldn't access a website that is hosted on this machine, so I went digging around. It seems as if IIS6 was somehow uninstalled, which I know I didn't do. My question is: What would cause this? I've tried to reinstall it, uninstall it, reinstall it again, and nothing has changed. I still have a blank IIS Manager application (inetmgr), and no way to access these websites. BTW, the computer is running Windows Server 2003 R2 x64 Service Pack 2.

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• Setting correct Content-Type sent from Wordpress, on Apache server

  - by eoinoc

  I need help pointing me in the right direction for setting the ContentType returned by Apache for content produced by WordPress. I'm having trouble figuring out why WordPress is returning incorrect headers. Issue The specific problem is that our Wordpress blog pages are being downloaded as a file rather than displayed by Internet Explorer and Chrome v21. Content-Type: application/x-gzip is being returned by the server. I'm told that I should expect Content-Type: text/html. Background The URL is http://www.bitesizeirishgaelic.com/blog/.

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• EC2: map multiple applications to different domains

  - by EsseTi

  i'm playing with EC2 and i've been able to create my instance that has a django appliacation on port 80, and a tomcat on 8080. now, with elastic IP i can manage to redirect my domain to django application. now i would like to map subdomains to each tomact applications. for example django app (ec2...:80) --> mydomain.com tomcat (ec2...:8080) --> tomcat.mydomain.com webbapp1 (ec2...:8080/webapp1/) --> webapp1.mydomain.com is this possible with the free account? ciao

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• What is the best appliance you've used?

  - by phuzion

  Post your favorite appliances or "all-in-one" programs. Whether it runs in a virtual machine, or on its own hardware, it all goes. My submission is Untangle. It's an open source network gateway (their term). Essentially, it can run a plethora of things that you may otherwise end up buying another appliance for: Web filtering logging mail spam filtering phishing monitor spyware blocking VPN You name it, it's all there. Best of all, it's mostly free. A few appliances have annual costs due to inherent licensing or subscription costs. If you are looking for a new network perimeter device, definitely check it out. The underlying OS doesn't matter, because it's the application we want to praise, not the OS beneath it.

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• Editing files on linux server from windows

  - by celicni

  I want to edit text files on Linux server from Windows, using text editor like Notepad++ or UltraEdit. I've managed to do so using WinSCP. It can edit files remotely and offers me to choose local application to open those files. That is exactly what I need, but when I hit ctrl-s (not every time, in about 50% cases), it waits for around 10 seconds, alerts that connection has failed, and offers me to "abort". When I click abort, it instantly reconnect and save file. So does anybody knows any other way to edit files remotely without this annoying waiting period.

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• How to setup a scheduled task to run every 30 minutes? Windows Server 2003

  - by JL

  I'm having a problem running a scheduled task in Windows 2003 server, it ran for 4 hours, now it won't start up again. I will tell you exactly what I have done to create the task, please tell me if I am doing anything wrong. My objective is to have my task (console app) run every 30 minutes. I open control panel, scheduled tasks, add new scheduled task Browse for my application I want to run, a console app without any command line arguments I select, perform this task - Daily I select the start time (now 8:00 in the morning) Start date set to today Set the correct username + password Open advanced properties Repeat the task every 30 minutes for 24 hours Save and close. Anything wrong in the above mentioned steps I've implemented? Thanks in advance.

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• Windows: Create shortcut to changing folder name

  - by mikeparkie

  I have some portable apps and when I download them they extract to a normal directory structure, but the structure includes a version number, How do I create a start-up shortcut to the program so it doesn’t break when the application is updated? For example: I can create a shortcut to “D:\PortableApp\V1\prog.exe” and place the shortcut into Startup items and it works fine. Now the program is updated to V1.1. How do I get the shortcut to update to “D:\PortableApp\V1.1\prog.exe”without manually updating the shortcut? Thanks in advance mikeparkie

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• Why doesn't disabling IE's 'Protected Mode' enable the dragging-and-dropping of addresses from the IE address bar into Notepad

  - by dumbledad

  IE's Protected Mode prevents one dragging the address from the IE address bar into other applications (for example Notepad). There's an informative article on MSDN about Allowing Drag and Drop Operations in your Application. If I uncheck Enable Protected Mode in IE's settings and restart IE I still cannot drag the address from the IE address bar into other Notepad. Why doesn't disabling IE's 'Protected Mode' enable the dragging-and-dropping of addresses from the IE address bar into Notepad? Is there a way to make that work without adding a registry entry for Notepad (following the instructions in the article I mentioned)? (N.B. This is actually part of me trying to work out how to get this address drag-and-drop working in Processing.)

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