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  • Proper way to rotate Nginx logs

    - by depesz
    I would like to achieve rotation of nginx logs that: would work without any extra software (i.e. - best if without "logrotate") would create rotated files with names based on date Best approach is something like PostgreSQL has - i.e. in it's log_filename config variable I can specify strftime-style %Y-%m-%d, and it will automatically change log on date (or time) change. Another approach from apache - sending logs via pipe to rotatelogs program. As far as I was able to search - no such approach exists. All I can do, is to use logrotate with dateext option, but it has it's own set of drawbacks, and I'd rather use something that works like |rotatelogs or log_filename in PostgreSQL.

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  • Linux (non-transparent) per-process hugepage accounting

    - by Dan Pritts
    I've recently converted some java apps to run with linux manually-configured hugepages. I've got about 10 tomcats running on a system and I am interested in knowing how much memory each one is using. I can get summary information out of /proc/meminfo as described in Linux Huge Pages Usage Accounting. But I can't find any tools that tell me about the actual per-process hugepage usage. I poked around in /proc/pid/numa_stat and found some interesting information that led me to this grossity: function pshugepage () { HUGEPAGECOUNT=0 for num in `grep 'anon_hugepage.*dirty=' /proc/$@/numa_maps | awk '{print $6}' | sed 's/dirty=//'` ; do HUGEPAGECOUNT=$((HUGEPAGECOUNT+num)) done echo process $@ using $HUGEPAGECOUNT huge pages } The numbers it gives me are plausible, but i'm far from confident this method is correct. Environment is a quad-CPU dell, 64GB ram, RHEL6.3, oracle jdk 1.7.x (current as of 20130728)

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  • Uninstall SQL Server 2005 Express after Demoting the DC

    - by Walter Aman
    A Windows Server 2003 SP2 hosting a now orphan installation of SQL 2005 Workgroup was pressed into service as a DC in a disaster recovery scenario. It has since been demoted. The server also hosts legacy apps for which we lack reinstallation resources; thus our desire to preserve it as close to intact as possible while removing the orphaned roles. All efforts to remove SQL 2005 thru Control Panel and ARPWrapper /remove fail with error 29528. Should I abandon this and leave the orphan SQL dormant, or is it reasonable to remove it post-demote?

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  • Do I need to disable access to a publisher database when setting up SQL Server 2000 Transactional Re

    - by Kev
    I have a production database i.e. where there are constant updates and I've configured this to be published to another server using Transactional Replication. When I configure transactional replication I've been doing the following: disable access to the source database backup source DB then restore to subscription server configure replication re-enable DB access to our apps The problem with this approach is scheduling in downtime, having to suspend all the various timed scheduled tasks we run and shutting down access to our various applications that are dependant on this database. Can I just configure transactional replication without disabling access to the publishing database and the subscriber database will correctly catch up? i.e. are all the DML statements queued on the publisher and as soon as the subscriber is ready they are picked off and executed?

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  • eTrayz: Replace base system with a bootstrapped Debian

    - by knoopx
    I bought an eTrayz NAS time ago. The device is more or less good but it ships with a closed-source custom linux and a bunch of broken web-apps. I wanted to replace the whole system with a raw Debian installation. I successfully bootstrapped a Lenny Debian into a chroot and I'm able to use use it. However I would like it to be the default system and to boot automatically at login. The device itself ships with a bundled 2.6.24.4 kernel. I think the kernel is on a dedicated flash memory so I would prefere not to re-flash it. What do you think is the best way to accomplish it?

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  • any security tips for my first server? (complete beginner)

    - by Haroldo
    I'm paying for a VPS and hoping to launch my first website on it in the next few days. I'm worried there might be some glaringly obvious security holes in the standard setup, so I'm keen to get some tips About the only thing i know is turn off error reporting in PHP and create users/privilages for MySQL... any more stuff along those lines? I'm using: cpanel and WHM centos 5 php mysql google apps as mail server (so maybe i should disable built in mailer server somehow?!!) This is my first post of Server Fault (i use stack overflow alot), I hope i'm posting this in the right place, with the right tags - please feel free to edit if i'm wrong. Thanks guys!

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  • Firefox (on windows) constantly consuming 10% CPU - is there an add-in to find the rogue tab?

    - by tbone
    I often have many Firefox windows open, each with many tabs. Now and then one of the tabs will be running a web page that for some reason consumes lots of resources. Right now, I have a tab somewhere that is constantly consuming 10% of the CPU...which would be fine as my computer can easily handle that (see specs below...all other apps are responsive), but it seems to slow Firefox down....everything, everywhere is extremely laggy in Firefox, I can see pauses while I type this. Is there: - a way I can isolate separate instances (or even tabs) in FF into a separate process, so one rogue tab doesn't bog down FF across the entire system? - maybe an add-in that can either identify tabs consuming lots of CPU, or maybe a way to "shut down" activity on tabs you haven't used in a while? Firefox 3.6.10 Windows 7 Ultimate 64 i7 920 @ 3.6 GHz 12 GB Ram

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  • SSL certs or intermediate for DMZ

    - by rex
    I've been tasked with deploying and managing load balancers covering internal servers and DMZ servers. I have no experience with this, and this is a first for my organization as well. Balancers are up, running, legit. Currently we are using a self-signed cert for Exchange/OWA. I know that we should have a cert signed by a CA, but the balancer has options for SSL cert or intermediate cert, and I'm unclear on the difference, or on which we need. We will be hosting Lync, Exchange and some custom apps in the DMZ. disclaimer: Apologies up front, I'm desktop support. I recently passed my Net+. It seems that has made me the network engineer in this organization.

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  • Java sound doesn't work under Linux

    - by Cliff
    I just installed Fedora 12 and after downloading and running the Java Sound Demo I get exceptions. If I run just a vanilla Java program that plays a .wav file it runs silently with no sound and no exceptions. Every other app seems to play sound. I also took some advice from this thread in the Ubuntu forums which almost seemed to work. (Installing aoss got rid of the initial exceptions in the sound demo but I still hear nothing when I play.) I'm getting frustrated by the individual hoops I have to go through to eek sound out of my speakers when running Java apps on Linux platforms! Can somebody help me figure out what's wrong?

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  • What happens if an OpenStack cloud controller dies?

    - by magu
    I've been reading up on OpenStack and how we can re-create an EC2/S3-style cloud for our internal development and I'm having a hard time finding information on how the OpenStack cloud controller provides redundancy of the cloud management services. I know I can setup multiple Swift and Nova nodes, but not a single document/article/howto/wiki contains information on: a) what happens if the cloud controller node dies; and b) how to setup redundant cloud controllers. It seems to me that, although it is massively scalable, there is a big single-point-of-failure built into OpenStack. Can anyone with more experience on OpenStack please shed some light as to how it all works in regards to high-availability?

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  • How can I avoid heroku stopping my dyno?

    - by iwein
    I build MVP's for clients regularly. Often I deploy on Heroku so they can see if the product works and demo it to prospects and investors. Then I have an application deployed on heroku, and it works like a charm, if not for one little thing. The app takes about 30 seconds to start up and heroku has the annoying habit of killing dyno's if they don't get traffic. My client is using the application for demo purposes now, so the load is extremely low and intermittent. I'm looking for a solution that is preferably: cost effective can be applied to multiple apps simultaneously What is the best way to avoid having the first request taking 30 seconds?

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  • What is the effect on LVM snapshot size when a file block is rewritten with it's original contents?

    - by NevilleDNZ
    I'm exploring using LVM snapshot's to off site incremental archives from a snapshot "master" file system. In essence: simply copy across only the files on the "master" that have changed since the last incremental copy to the "archive". Then snapshot the "archive" to retain the incremental. I am a bit puzzled as to the block usage behaviour of the archive's own incremental snapshot. I'm expecting that LVM is not smart enough to know that the "file block" is actually unchanged, and the a new copy will be allocated and written for the fresh "archive" file system. Can anyone confirm this, or point me to a document/page that gives some hints? BTW: the OS hard disk cache, hard disk physical cache and hard disk itself also doesn't need to do any actual "disk writes" as the "disk block" likewise is unnecessary. Any pointers to discussion of this style of optimisation would also be ineresting.

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  • How to force-resize a window in OS X ?

    - by cwd
    I remember from my Windows XP days that there was a utility that would let me re-size non-re-sizable windows. Is there something like that on OS X? I'm using PandoraJam and it is sort of iframing the pandora player. Pandora has recently changed the size of the player and PandoraJam has not caught up. I can hit the green zoom button but that changes it to a much bigger player with ads. It would be nice if there was a utility that would just let me force-resize it. This would also be handy for a few other apps too. Thanks!

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  • Is there a way to do a Windows 7 repair install when you are unable to start/boot Windows 7?

    - by irrational John
    My understanding is that the only way to perform a "repair install" in Windows 7 is to run the install setup.exe within the Windows 7 installation you want to repair. This seems a little brain dead to me since usually the reason I wanted to perform the repair install was because the existing installation was so broken that I could no longer boot and use it. It seems Microsoft is saying my only option in that case is to do a clean install and then reinstall all my apps. So I'm wondering if anyone knows of a way to perform a Windows 7 repair install ... one that preserves your existing OS settings and application installs ... on a Windows 7 partition that cannot be booted.

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  • How do I set the umask for files and directories created from the GUI in MacOS X Lion (10.7)?

    - by Avry
    I've set my umask in my .bashrc file to 007. Any files created on the command line after loading my bashrc file respects this setting. I want to be able to set the umask to 007 for any files created using non-command line apps. This document talks about setting the umask via launchd. And it kind of works. If I follow these directions I can change the default permissions on a GUI created file from rw-r--r-- to rw-rw---- but the directories still are not group writeable (i.e. I want them to be rwxrwx--- but they are rwxr-x--- instead) The analog on Linux would be /etc/login.defs as the place to set the umask. What do I change in order for the umask to be set properly (i.e. the way I want it)?

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  • Windows 7: How to prevent Windows from caching my desktop wallpaper

    - by rmartz
    I have a service running that renders a changing wallpaper every 5 minutes or so, and replaces the current image file with the new one automatically (That is to say, new image but same filename). On Linux, the change is detected almost automatically, and so I have the most current wallpaper. However, on my Windows 7 machine (Which syncs the image with my Linux machine over Dropbox), it appears to cache the wallpaper from the last time I manually set the wallpaper. The image never changes, even if I restart. Is there a way to make Windows detect the file change, or periodically refresh the wallpaper cache? I'd like to avoid third-party apps if at all possible.

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  • creating decision tree based troubleshooting documentation?

    - by Joseph
    We troubleshoot a lot of server and network issues and follow a loose set of steps on what to do in different cases. With more and more people and responsibility, the need for standardization is needed so we don't miss something. I know I could accomplish what I want using flowcharts, but I'd like to do something similar to a "Choose Your Own Adventure" style. I think this is pretty much the same as what support call centers seem to do. Are there any tools to make creating such documentation easier? I'm looking for a web based approach if possible.

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  • using munin-plugins-rails to monitor rails app perfromance

    - by user2099762
    I have been trying to configure munin-plugins-rails to monitor the performance of our rails apps from Munin. The graphs appear, but no data is shown in the graphs. The log files show Error output from : 2013/06/27-15:39:06 [5540] Request-log-analyzer, by Willem van Bergen and $ 2013/06/27-15:39:06 [5540] Website: http://railsdoctors.com I have tried running Request-log-analyzer manually and pointing it at the production log file, and this reports as % for every item. There is data in the log file. I have tried changing the version of the gems installed, and also the type of the log file, but no luck. Any ideas anyone? Thanks

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  • Transfer Win8 user settings between profiles [closed]

    - by GlennFerrieLive
    Possible Duplicate: How do I sync grouped Windows Store apps between devices? Is there a way for me to copy/save/transfer my "start menu" configuration, meaning the grouping and ordering of the elements on the Start screen, between user profiles? Is it in the registry? I am open to manual or "coded" suggestions. UPDATE: I'd like to VETO this closing. I am aware of the "roaming" profile behavior. I want to COPY my configuration BETWEEN profiles on the same machine.... DIFFERENT profile DIFFERENT person. I like the way my start screen is set up. i want to set my wife up with the same layout.

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  • command line find/replace help

    - by Chrisbloom7
    I've got a set of 5000+ files that I need to do a simple search and replace in. I have been doing it in a text editor (EditPlus) by opening 500 files at a time, doing a global search/replace, saving all, closing, etc. But, that's taking literally hours to do and it's boring and tedious and I already have done it once today and need to do it again because all the files got refreshed. Is there a way to do this via the Bash command line? Here's the details: Find onchange="document.location ='/products/view.html/view/'+this.value" Replace it with onchange="alert('Not implemented')" style="display: none" All of the files have a .HTM extension, but they are nested in several sub directories.

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  • How do you persist installed software & configurations on an Amazon EC2 instance?

    - by Richard
    I've gotten a base Debian AMI up and running and now I need to know the best way to maintain it. I've ran the updates (aptitude update/upgrade) and installed/configured my software (Apache, Ruby, etc.) but if I reboot the instance or start a new one I'll have to do all this work over again. How do you persist these types of things over a reboot? Do you build a new AMI every time you adjust some tiny piece of the system? Or is there some way to feed it a script on startup that configures it in "real-time"? I know I could go all the way with a Reductive Labs Puppet style setup but that's a bit too much for my needs right now (1-2 servers). Any best practices on this? Update: I found a bit of information on using User-Data to run scripts at instance boot time.

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  • Caching static content from Adobe, Microsoft, etc

    - by Tim
    I'm currently running the Apple SUS on a Mac OS X Server in a small office environment. It works well for Apple updates, but I'm still stuck with either manually downloading and installing Adobe/Microsoft updates on each computer or running them through a Squid cache, with the blind faith that Squid will keep the files I actually want to stay cached. What is the best way to cache updates locally for applications like the Adobe Updater or Microsoft AutoUpdate? Ideally cached in such a way that I can tell which files I do or do not have cached. It would also be nice to be able to cache things for other software like Firefox and Sparkle-enabled apps, but these are usually small enough to ignore.

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  • RDP connections keep dropping

    - by Shaul
    I have an odd problem on my notebook (HP Pavilion dv7). My Internet connection seems OK for the most part. But lately I've been having trouble with Remote Desktop connections. While I can connect to remote computers, the connection is very flaky, and usually drops after a few seconds. Sometimes it'll successfully reconnect automatically, and sometimes not. But even after successful reconnection, it'll just drop again after a few seconds. This appears to be independent of which RDP host I'm connecting to, and which network I'm connected to locally, whether wireless or wired. Other remote control apps like TeamViewer and Ammyy seem to work fine. Any ideas?

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  • Can font substitutions in MS Word be controlled?

    - by Jukka K. Korpela
    Suppose that I am typing text in MS Word (any version) and I enter a character that does not exist in the font being used. Say, I’m using Times New Roman and I type 2300 Alt X, which turns to the diameter sign “?”, which does not exist in Times New Roman. MS Word picks it up from a different font, like Arial Unicode MS. This may mess up the typographic style, or line spacing. And this happens without notice. Perhaps the most inconvenient feature here is that MS Word does not automatically return to the original font. Subsequent text appears in the replacement font, unless the user sees what is happening and realizes that he needs to change the font. The question is: Can such substitutions be controlled, e.g. by specifying the font(s) to be used as backup fonts? If not, is there any reliable documentation about it?

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  • Windows 8 Start Screen: Show programs in order of most frequently used

    - by Johnny W
    For me the Windows 8 Start Screen is just a great bit version of the old Start Menu, but unlike the Start Menu, it doesn't seem to order programs by frequency of use? Consider the following: While I DO use Chrome, Steam, and iTunes a lot. I've never ran Adobe Media Encoder, nor Adobe Extension Manager, nor Acrobat Distiller, or indeed most of the things on that list! Or there a way to change sorting to most frequently clicked on? Or perhaps even create FOLDERS in which to group items (e.g. "Adobe Apps" or "Games" or "Microsoft Office"?). Dragging them one at a time takes an age!

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