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  • How to monitor changes in the frequency of network latency spikes over time?

    - by dequis
    I'm currently trying to troubleshoot an issue with my network in which I get latency spikes up to 200 seconds (normally around 50 secs) in an apparently random way at apparently random moments of the day. While trying to find what part of my messy network needs to be blamed (outside of the scope of this question - discussed a bit on chat), I realized I have no reliable way to confirm that a change actually improved anything. So far, the main way in which i notice this is that irssi shows [Lag: 15 (??)] in the statusbar, increasing every 5 seconds, and all other connections seem to be affected too. Since this depends on my observations, it's not a very reliable method to know how often it really happens. Note that just sending ICMP pings is probably not enough, but that's just my guess. It might be a "bufferbloat" issue, it might be packet loss, it might only apply to persistent connections. I suspect this because a few months ago, when the issue started, I had a "ping" command running in background and it didn't show anything weird at all during the latency spikes. This seems to have changed now (pings don't go through), but still, I'd prefer something more robust.

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  • How Do I Secure WordPress Blogs Against Elemento_pcx Exploit?

    - by Volomike
    I have a client who has several WordPress 2.9.2 blogs that he hosts. They are getting a deface kind of hack with the Elemento_pcx exploit somehow. It drops these files in the root folder of the blog: -rw-r--r-- 1 userx userx 1459 Apr 16 04:25 default.htm -rw-r--r-- 1 userx userx 1459 Apr 16 04:25 default.php -rw-r--r-- 1 userx userx 1459 Apr 16 04:25 index.asp -rw-r--r-- 1 userx userx 1459 Apr 16 04:25 index.aspx -rw-r--r-- 1 userx userx 1459 Apr 16 04:25 index.htm -rw-r--r-- 1 userx userx 1459 Apr 16 04:25 index.html -rwxr-xr-x 1 userx userx 1459 Apr 16 04:25 index.php* It overwrites index.php. A keyword inside each file is "Elemento_pcx". It shows a white fist with a black background and the phrase "HACKED" in bold letters above it. We cannot determine how it gets in to do what it does. The wp-admin password isn't hard, but it's also not very easy either. I'll change it up a little to show you what the password sort of looks like: wviking10. Do you think it's using an engine to crack the password? If so, how come our server logs aren't flooded with wp-admin requests as it runs down a random password list? The wp-content folder has no changes inside it, but is run as chmod 777 because wp-cache required it. Also, the wp-content/cache folder is run as chmod 777 too.

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  • make local only daemon listening on different interface (using iptables port forwarding)?

    - by UniIsland
    i have a daemon program which listens on 127.0.0.1:8000. i need to access it when i connect to my box with vpn. so i want it to listen on the ppp0 interface too. i've tried the "ssh -L" method. it works, but i don't think it's the right way to do that, having an extra ssh process running in the background. i tried the "netcat" method. it exits when the connection is closed. so not a valid way for "listening". i also tried several iptables rules. none of them worked. i'm not listing here all the rules i've used. iptables -A FORWARD -j ACCEPT iptables -t nat -A PREROUTING -i ppp+ -p tcp --dport 8000 -j DNAT --to-destination 127.0.0.1:8000 the above ruleset doesn't work. i have net.ipv4.ip_forward set to 1. anyone knows how to redirect traffic from ppp interface to lo? say, listen on "192.168.45.1:8000 (ppp0)" as well as "127.0.0.1:8000 (lo)" there's no need to alter the port. thanx

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  • Websites down EC2 inaccessible via SSH CPU utilisation 100% last few hours - what should I do?

    - by fuzzybee
    I have multiple websites hosted on 1 single EC2 instance. 1 website "abc" were down for a few hours, sometimes threw database connection error and sometimes just took too long to respond. 1 website "def" were incredibly slow but still up and running the rest of the websites had the same symptoms has "abc" I can afford 15 min or less down time for "def". Should I then (in AWS console) reboot my instance or create an AMI image from my instance and launch it and associate my elastic IP to the new instance or "launch more like this" Background on what may have happened to my ec2 The last time I made changes for 21 hours ago. A cronjob to create snapshots ran around 19 hours ago and it has been running for a long time. Google Analytics shows traffic to my websites such as kidlander.sg has been nothing exceptional. Is there any other actions I should take or better options I could have? (I have already contacted AWS support but their turnaround is 12 hours so I appreciate all the help I could get) Update I got everything back up and running and CPU utilisation back to normal, around 30%. There is 1 difference between "def" and "abc" as well as my other websites "def"'s database is hosted on RDS "abc"'s database is hosted on an EC2 instance (different from my web server instance) configured by myself Nevertheless, I checked the EC2 instance I'm using as MySQL server yesterday and it was absolutely fine during the incident low CPU ultilisation I could log in using linux command line

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  • Windows 7 just deleted 4 days of work wtf!?

    - by Mat
    Hey! I'm just a bit about to freak out. I just finished a project and rebooted my computer. It didn't want to boot anymore so I had to use the windows 7 system repair option. it run for a minute and then booted up. Now most of my sourcecode from the last 4 days of work is gone! background: sometimes (most often after installing new software) my notebook won't boot up anymore. It will just show the little Win 7 flag, but not read from the harddisk anymore. If I hardabord and reboot then, it asks me whether to start windows normally (which won't work) or to run "windows startup repair". If i run it, it does some stuff for about two or three minutes and then I can boot windows again. Usually after this, .exe files i added to the computer during previous days are gone - but other files so far were not touched. But now, after this happened, a whole bunch of ".as" (ActionScript source files) from my project are gone!! does anyone know where and whether there's a way to recover them?? please help! Thank you!

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  • Backup with Mercurial and Robocopy?

    - by Andrew Neely
    The Problem We would like to backup our critical files from several network shares to a removable hard drive. We want to automate the backup so we don't have to remember to run it. It needs to finish overnight. Furthermore, we want to be able to preserve multiple versions of each file so we can back out of our user's mistakes easier. Background Information I work in a large Windows-based enterprise with a centralized IT section who is responsible for all backups. Their backups are geared towards disaster recovery and not user error, and require upper-level management approval for any non-disaster recoveries. Several times we have noticed that our backups have failed, we weren't notified. I do not have administrative rights to the server or my desktop. We are trying to backup some 198,000 files spanning about 240 gigabytes. These files rarely change. Our backup drive is one terabyte. My Proposed Solution What I would like to do is to write a batch file using Robocopy with the /mir option along with Mercurial SCM to store all versions of the file. I would do an hg add followed by an hg commit before each execution of Robocopy to save the current state, and then make a mirrored copy of the file structures. The problem is the /mir will delete every folder not present in the source, and Mercurial stores the repository in a .hg folder in the destination folder. Does anybody know how I could either convince Mercurial to store the .hg folder elsewhere, or convince Robocopy not to delete it from the destination? I'm trying to avoid writing a custom program do to copying.

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  • Conky starts above windows in Ubuntu Maverick

    - by DesertIvy
    Hey guys, I did not run into this problem until I upgraded my Ubuntu box to Maverick Meerkat (10.10). Basically, whenever I start my computer, conky runs as expected, except it gets drawn over any windows that I load (see screenshot). To fix this for a single session, I simply restart conky by running killall conky; conky in a terminal. Conky gets re-drawn below active windows (namely, only appearing on my desktop), and does not have the border/drop-shadow, but I have to do this every time I start a new session. Is there a simple way to fix this? I have a small shell script that I run on startup, but it does not seem to solve the problem. #!/bin/bash sleep 10 && conky; sleep 5 && killall conky; conky; Below is the non-text part of my .conkyrc file. # Conky settings # background yes update_interval 1 cpu_avg_samples 2 net_avg_samples 2 override_utf8_locale yes double_buffer yes no_buffers yes text_buffer_size 2048 #imlib_cache_size 0 temperature_unit fahrenheit # Window specifications # own_window yes own_window_type override own_window_transparent yes own_window_hints undecorate,sticky,skip_taskbar,skip_pager,below border_inner_margin 0 border_outer_margin 0 minimum_size 200 250 maximum_width 200 alignment tr gap_x 220 gap_y 280 # Graphics settings # draw_shades no draw_outline no draw_borders no draw_graph_borders no # Text settings # use_xft yes xftfont caviar dreams:size=8 xftalpha 0.5 uppercase no temperature_unit celsius default_color FFFFFF # Lua Load # lua_load ~/.lua/scripts/clock_rings.lua lua_draw_hook_pre clock_rings

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  • Get IP or MAC addresses of Windows Multipoint Server 2012 stations?

    - by user1454265
    Is it possible to programmatically retrieve the IP or MAC address of a station assigned to a Windows MultiPoint Server 2012 host, using PowerShell or any other .NET or Windows API? Background: I'm developing a application to help set up USB-over-Ethernet zero clients in a WMS 2012 setup, bridging the PowerShell "WmsCmdlets" module (Microsoft.WindowsServerSolutions.MultipointServer.PowerShell.Commands.Library.WmsStation) and a third-party vendor API for configuring zero client IP address, etc. So far, I do not know any means of matching up the "stations" of the WmsCmdlets with the zero client objects in the vendor's API. Finding out the IP or MAC associated with a WMS station would do nicely, since I have this on the zero client API side. However, I haven't found any information I could use in the PowerShell WmsCmdlets module, such as Get-WmsStation which returns the following: Id : 1 Name : <my station name> IsAutoLogOn : False IsSplit : False CollabId : 0 RemoteConnectionServerName : VirtualMachineName : VirtualMachineId : AutoLogOnUserName : AutoLogOnPassword : DeviceTypes : {DT_Mouse, DT_Keyboard, DT_Audio, DT_MassStorage...} DeviceCounts : {2, 2, 0, 0...} ComputerName : <my WMS host server name> SessionId : 4294967295 SessionHostServer : <my WMS host server name>

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  • Utility to store/cache all web pages and YouTube videos

    - by jonathanconway
    I found myself in the following situation. I'm travelling abroad with my laptop. I connect to a WiFi point and do a bit of browsing and play a YouTube video or two. Then I disconnect and hop on either a plane or taxi. Now I want to go back to some of the webpages I was browsing before and continue reading them, or watch some more of that YouTube video. Unfortunately it seems like none of these resources are cached, or if they are, I have no idea how to access them. Here's what I'd like: A utility that starts when my computer boots and sits in the background, silently caching all the web pages that I view. Not only that, but also the resources such as YouTube videos. Later, when I re-navigate to a site while disconnected, the browser automatically pulls the pages from my cache rather than giving me a 404 error. Or I can click an icon in the system tray and see a list of all the pages/videos in the cache and view any that I like. I'm sure Internet Explorer had a feature like this at some point, like "Offline Mode" or something. But these days it doesn't seem to work. Even when I select that option I still can't view pages that I'm certain I downloaded before. So has the utility I'm talking about been developed yet?

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  • ghc6 install trouble: hGetContents: invalid argument (invalid UTF-8 byte sequence)

    - by olimay
    Having trouble installing ghc6 on Ubuntu Maverick via apt. Here's what seems to be the relevant error that comes up when I try to (apt-get|aptitude) install ghc6: A package failed to install. Trying to recover: Setting up ghc6 (6.12.1-13ubuntu1) ... ghc-pkg: /home/opm/.ghc/i386-linux-6.12.1/package.conf.d/unix-compat-0.2-edefa7bced91ebe610d455bab466e200.conf: hGetContents: invalid argument (invalid UTF-8 byte sequence) (Here's the full output, if you're interested: http://paste.ubuntu.com/566475/ ) This still happens after apt-get clean and apt-get update. My searching around has not really helped me understand what's going on, except that it might be caused by a mismatch in locale. So, here's the output of locale too: LANG=en_US.utf8 LANGUAGE=en_US:en LC_CTYPE="en_US.utf8" LC_NUMERIC="en_US.utf8" LC_TIME="en_US.utf8" LC_COLLATE="en_US.utf8" LC_MONETARY="en_US.utf8" LC_MESSAGES="en_US.utf8" LC_PAPER="en_US.utf8" LC_NAME="en_US.utf8" LC_ADDRESS="en_US.utf8" LC_TELEPHONE="en_US.utf8" LC_MEASUREMENT="en_US.utf8" LC_IDENTIFICATION="en_US.utf8" LC_ALL= Any ideas? Additional background: this all seems very strange to me, because I used to have ghc6 installed correctly--I use XMonad as my main window manager most of the time. I tried to install haskell-platform (through apt), which failed and told me that there was something wrong with ghc6, and so I reinstalled ghc6 and began to get the above error message.

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  • Can I have 2Gbit over 1Gbit Nics

    - by Daniel
    So this really baffles me. Apparently because 1Gbit can transmit data in both directions simultaneously it should be possible to get 2Gbit of data transfer on a single NIC (1Gbit flow seend and 1Gbit receive). People claim that because 1Gbit is full-duplex (almost always) it is exactly 2Gbit in total. My intuition and electrical background tells me that something is not right here 4 twisted pairs 250Mbit capacity each gives 1Gbit. Unless it is really possible to transfer data in both directions simultaneously. I did a test with iperf. Ubuntu server 12.04 <-- MacBook Pro. Both with decent CPU speed. Tested speed of connection individually and on Mac I can see 112MB/s regardless which direction data is going. On Ubuntu with vnstat and ifstat I got 970Mbit speeds. Now, launching iperf in server mode on both machines at the same time and sending data using 2 iperf clients shows that I'm for example on Ubuntu box sending at 600Mbit, and receiving 350Mbit. which adds up to pretty much 1Gbit link. So to me there is no magical 2Gbit. Can someone confirm that or tell why I'm wrong? Another thing that confuses me i the fact that e.g. 24-port switch has for example: Throughput»up»to:»50.6Mpps Switching»capacity:»68Gbps Switch»fabric»speed:»88Gbps Which would suggest thay can handle 2GBit per port.

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  • Kubuntu: apt-get install of php5-dev: libtool version mismatch?

    - by pinkgothic
    (Warning, clueless-newbism ahead.) Background info: I'm actually trying to install/upgrade xdebug. sudo pecl install xdebug yields: downloading xdebug-2.0.5.tgz ... Starting to download xdebug-2.0.5.tgz (289,234 bytes) ............................................................done: 289,234 bytes 67 source files, building running: phpize sh: phpize: not found ERROR: `phpize' failed A quick google tells me that phpize is a part of a package called php5-dev, so off I ran to install that. My problem is that using sudo apt-get install php5-dev fails with this output: sudo apt-get install php5-dev Reading package lists... Done Building dependency tree Reading state information... Done Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. The following information may help to resolve the situation: The following packages have unmet dependencies: php5-dev: Conflicts: libtool (>= 2.2) but 2.2.6a-4 is to be installed E: Broken packages 2.2.6a-4 is greater than 2.2, so I'm not sure why it's hanging itself up at that point. I'm guessing the fact that it's not entirely numeric is throwing apt-get off? I can probably install xdebug manually (though I've never done this before, so picture me with a deer clueless-newb in headlights look here, violently shaking my head and begging for a simpler solution) rather than via pecl / aptitude, but is there a way I can make aptitude install php5-dev despite the bogus 'broken package' claim? Is it even bogus, or am I misreading the error message? Alternatively: Could I install phpize in some other way (e.g. via pear or pecl)?

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  • Kubuntu: apt-get install of php5-dev: libtool version mismatch?

    - by pinkgothic
    (Warning, clueless-newbism ahead.) Background info: I'm actually trying to install/upgrade xdebug. sudo pecl install xdebug yields: downloading xdebug-2.0.5.tgz ... Starting to download xdebug-2.0.5.tgz (289,234 bytes) ............................................................done: 289,234 bytes 67 source files, building running: phpize sh: phpize: not found ERROR: `phpize' failed A quick google tells me that phpize is a part of a package called php5-dev, so off I ran to install that. My problem is that using sudo apt-get install php5-dev fails with this output: sudo apt-get install php5-dev Reading package lists... Done Building dependency tree Reading state information... Done Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. The following information may help to resolve the situation: The following packages have unmet dependencies: php5-dev: Conflicts: libtool (>= 2.2) but 2.2.6a-4 is to be installed E: Broken packages 2.2.6a-4 is greater than 2.2, so I'm not sure why it's hanging itself up at that point. I'm guessing the fact that it's not entirely numeric is throwing apt-get off? I can probably install xdebug manually (though I've never done this before, so picture me with a deer clueless-newb in headlights look here, violently shaking my head and begging for a simpler solution) rather than via pecl / aptitude, but is there a way I can make aptitude install php5-dev despite the bogus 'broken package' claim? Is it even bogus, or am I misreading the error message? Alternatively: Could I install phpize in some other way (e.g. via pear or pecl)?

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  • Password Cracking Windows Accounts

    - by Kevin
    At work we have laptops with encrypted harddrives. Most developers here (on occasion I have been guilty of it too) leave their laptops in hibernate mode when they take them home at night. Obviously, Windows (i.e. there is a program running in the background which does it for windows) must have a method to unencrypt the data on the drive, or it wouldn't be able to access it. That being said, I always thought that leaving a windows machine on in hibernate mode in a non-secure place (not at work on a lock) is a security threat, because someone could take the machine, leave it running, hack the windows accounts and use it to encrypt the data and steal the information. When I got to thinking about how I would go about breaking into the windows system without restarting it, I couldn't figure out if it was possible. I know it is possible to write a program to crack windows passwords once you have access to the appropriate file(s). But is it possible to execute a program from a locked Windows system that would do this? I don't know of a way to do it, but I am not a Windows expert. If so, is there a way to prevent it? I don't want to expose security vulnerabilities about how to do it, so I would ask that someone wouldn't post the necessary steps in details, but if someone could say something like "Yes, it's possible the USB drive allows arbitrary execution," that would be great! EDIT: The idea being with the encryption is that you can't reboot the system, because once you do, the disk encryption on the system requires a login before being able to start windows. With the machine being in hibernate, the system owner has already bypassed the encryption for the attacker, leaving windows as the only line of defense to protect the data.

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  • Proper Network Infastructure Setup DMZ, VPN, Routing Hardware Question

    - by NickToyota
    Greetings Server Fault Universe, So here's a quick background. Two weeks ago I started a new position as the systems administrator for an expanding health services company of just over 100 persons. The individual I was replacing left the company with little to no notice. Basically, I have inherited a network of one main HQ (where I am situated) which has existed for over 10 years, with five smaller offices (less than 20 persons). I am trying to make sense of the current setup. The network at the HQ includes: Linksys RV082 Router providing internet access for employees and site to site VPN connecting the smaller offices (using an RV042 each). We have both cable and dsl lines connected to balance traffic (however this does not work at all and is not my main concern right now). Cisco Ironport appliance. This is the main gateway for our incoming and outgoing emails. This also has an external IP and internal IP. Lotus domino in and out email servers connected to the mentioned Cisco gateway. These also have an external IP and internal IP. Two windows 2003 and 2008 boxes running as domain controllers with DNS of course. These also have both an external IP and internal IP. Website and web mail servers also on both external and internal IPs. I am still confused as why there are so many servers connected directly to the internet. I am seriously looking to redesign this setup with proper security practices in mind (my highest concern) and am in need of a proper firewall setup for the external/internal servers along with a VPN solution about 50 employees. Budget is not a concern as I have been given some flexibility to purchase necessary solutions. I have been told Cisco ASA appliance may help. Does anyone out in the Server Fault Universe have some recommendations? Thank you all in advance.

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  • SharePoint Business Connectivity Services (BCS) Login failed for user 'NT AUTHORITY\ANONYMOUS LOGON'

    - by g18c
    I am running SharePoint 2010 with SQL 2012, I am trying to get Business Connectivity Services (BCS) running but I am facing a double-hope authentication issue. Everytime I try to connect to the external BCS list created in SharePoint designer, I get the error Login failed for user 'NT AUTHORITY\ANONYMOUS LOGON'. In the event viewer on the SQL server I see a login failure for an anonymous user from the SP server IP address. Background information below: I have enabled Kerberos under SharePoint Central admin. I have the following AD domain accounts: SP_Farm - main website pool SP_Services - for SharePoint services (including BCS) SQL_Engine - SQL database engine I then created the following with SetSPN: SetSPN -S http/intranet mydomain\SP_Farm SetSPN -S http/intranet.mydomain.local mydomain\SP_Farm SetSPN -S SPSvc/SPS mydomain\SP_Farm SetSPN -S MSSQLSvc/SQL1 mydomain\SQL_DatabaseEngine SetSPN -S MSSQLSvc/SQL1.mydomain.local mydomain\SQL_DatabaseEngine SetSPN -S MSSQLSvc/SQL1:1433 mydomain\SQL_DatabaseEngine SetSPN -S MSSQLSvc/SQL1.mydomain.local:1433 mydomain\SQL_DatabaseEngine I then delegated the AD accounts for any authentication protocol to the following: SP_Farm - SP_Farm (http service type, intranet) SP_Farm - SQL_DatabaseEngine (MSSQLSvc, sql1) SP_Service - SP_Service (SPSvc) SP_Service - SQL_DatabaseEngine (MSSQLSvc, sql1) I have also checked the WFE is being logged on to with Kerberos, with the WFE server event log showing event ID 4624 with Kerberos authentication, this is OK. The SQL is also showing connections authenticated as Kerberos from the WFE with the following query: Select s.session_id, s.login_name, s.host_name, c.auth_scheme from sys.dm_exec_connections c inner join sys.dm_exec_sessions s on c.session_id = s.session_id Despite the above, credentials are not passed from the client through the SharePoint server to the SQL server, only the anonymous account is used. I get the following error in the WFE server for 'BusinessData' ID 8080: Could not open connection using 'data source=sql1.mydomain.local;initial catalog=MSCRM;integrated security=SSPI;pooling=true;persist security info=false' in App Domain '/LM/W3SVC/1848937658/ROOT-1-129922939694071446'. The full exception text is: Login failed for user 'NT AUTHORITY\ANONYMOUS LOGON'. If I set a username and password with the Secure Store Service and set the external list to use the impersonated credentials, the list works. Any ideas what I have missed and what can be tried next?

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  • Android failure to boot on LG [migrated]

    - by Ukavi
    I need to recover data from my AT&T LG Thrill Android Phone Background: My AT&T LG Thrill phone's battery died a couple of days ago because I forgot to charge it. When I charged the phone and tried to turn it on, it showed the LG logo followed by the dropping balls and the AT&T "Rethink Possible" screen. I then get a mesage that the Application Google Services Framework has crashed and the phone goes into a loop with the dropping balls showing again followed by "Rethink Possible" screen. This sequence repeats itself over and over and the phone does not get out of this loop. I have been able to go into the recovery screen (both Safe Mode and the Android Recovery Service) and have cleared cache, etc. However, I DO NOT want to wipe user data and restore to factory settings as this will wipe all of my data (pictures, application data, etc). Solution Needed: I need a suggestion to a way of accessing my data so that I can back it up onto an SD card/computer. I DO NOT want to root the phone as this may void the warranty. What I'm looking for is a way of perhaps putting the original flash image on the micro SD card and then have the phone read that image. Or some other similar solution that will get the phone out of this loop and allow me to get to the data.

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  • Problem posting multipart form data using Apache with mod_proxy to a mongrel instance

    - by Ryan E
    I am attempting to simulate my site's production environment as closely as I can on my local machine. This is a rails site that uses Apache w/ mod_proxy to forward requests to a mongrel cluster. On my Mac OSX Leopard machine, I have the default install of apache running and have configured a vhost to use mod_proxy to to forward requests to a local running mongrel instance on port 3000. <Proxy balancer://mongrel_cluster-development> BalancerMember http://127.0.0.1:3000 </Proxy> For the most part, this is working fine. I can browse my development site using the ServerName of the vhost I configured and can confirm that requests are being properly forwarded to the mongrel instance. However, there is a page on the site that has a multipart form that is used to upload an image to the server. When I post this form, there is a delay of about 5 minutes and the browser ultimately returns a Bad Request Your browser sent a request that this server could not understand. In the error log for my vhost: [Tue Sep 22 09:47:57 2009] [error] (70007)The timeout specified has expired: proxy: prefetch request body failed to 127.0.0.1:3000 (127.0.0.1) from ::1 () This same form works fine if I browse directly to the mongrel instance (http://127.0.0.1:3000). Anybody have any idea what the problem might be and how to fix it? If there is any important information that I neglected to include, post a comment, and I can add to this question. Note: Upon further investigation, this appears to be a problem specific to Safari. The form works fine in Firefox.

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  • Postfix Whitelist before recipient restrictions

    - by GruffTech
    Alright. Some background. We have an anti-spam cluster trucking about 2-3 million emails per day, blocking somewhere in the range of 99% of spam email from our end users. The underlying SMTP server is Postfix 2.2.10. The "Frontline defense" before mail gets carted off to SpamAssassin/ClamAV/ ect ect, is attached below. ...basic config.... smtpd_recipient_restrictions = reject_unauth_destination, reject_rbl_client b.barracudacentral.org, reject_rbl_client cbl.abuseat.org, reject_rbl_client bl.mailspike.net, check_policy_service unix:postgrey/socket ...more basic config.... As you can see, standard RBL services from various companies, as well as a Postgrey service. The problem is, I have one client (out of thousands) who is very upset that we blocked an important email of theirs. It was sent through a russian freemailer who was currently blocked in two of our three RBL servers. I explained the situation to them, however they are insisting we do not block any of their emails. So i need a method of whitelisting ANY email that comes to domain.com, however i need it to take place before any of the recipient restrictions, they want no RBL or postgrey blocking at all. I've done a bit of research myself, http://www.howtoforge.com/how-to-whitelist-hosts-ip-addresses-in-postfix seemed to be a good guide at first, almost fixing my problem, But i want it to accept based on TO address, not originating server.

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  • What's the state of the art in image upscaling?

    - by monov
    I like to collect cool pics and use them as wallpapers or for other things. Often, artists publish only low-res versions, probably for fear of theft. Example: Gabriel Pulecio's BIRDS Now, if I want to use that as a wallpaper, I'd have to upscale it, and obviously that'd make it look blurry because of the bicubic interpolation. I realize there's no real way to get a high-res version from a low-res pic, because the information is not simply there. That said, I'm wondering if heuristics have been developed for upscaling with less apparent loss of quality. Those would probably be optimized for specific image types. For photorealistic pictures, for cartoons with large flat areas, for pixel art... One algorithm I'm aware of is Seam Carving. It works for some kinds of pics, especially ones with a plain, undetailed or uninteresting background, and a subject that strongly stands out. But it's far from being general-purpose. Applying it to the above pic produces this. It looks quite sharp, but the proportions are horribly distorted because the algorithm is not designed for this kind of pic. Another is Pixel art scaling algorithms. Those are completely unfit for anything other than actual pixel art that's pixelized to begin with. For example, I tried the scale2x windows binary on my pic, but its output was nearly indistinguishable from nearest-neighbour scaling because the algorithm didn't detect any isolated pixely fragments to work from. Something else I tried was: I enlarged the image in Photoshop with bicubic interpolation, then I applied unsharp mask. The result looks pretty bad. The red blotch is actually resized reasonably well, but the dove is far from it. What I'm looking for is some app that makes a best-effort attempt at upscaling any input image while minimizing blurriness. If you know of any, I'll be thankful. Note that the subjective prettiness and sharpness of the result is what matters... the result doesn't need to be completely faithful to the original small image.

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  • What is the fastest way to resize a large partition?

    - by Jook
    Due to a new HDD-Configuration I am currently handling larger backup/resize tasks with partitions between around 900MB, wich are 70-90% full. some background: First thing I've noticed was, that the Acronis-WesternDigital TrueImage was extremly slow while running it under Windows 7, even though on high priority. To create a normal backup for 650gb of data (900gb partition), it would have taken 3 days! The same task done with the boot-cd version of this acronis version took about 2 hours (SATA3 copy from one disk to another, both around 110MB/s). Now, after I have done all my backups, I've wanted to remove some obsolete partitions and resize the leftovers to full hdd size. Of course, usually this takes quite some time - in this case for this 900gb partition, to extend it to 931 (30gb+ from front, 1gb+ from end), it will take around 6 hours (using gparted)! Had I new that erlier, I would have just restored the image. But no - first it showed a reasonable time of 1:45h and 0 of 1 operations, but after finishing 1:45h it started again, only this time with 4h to go, still 0 of 1 operations, but now it was copying instead of moving. Question: However, why has it to be this slow to resize a partition? I am asking for a good explanaition. This has bugged me, since I started partitioning - why does it require to copy all the data around, can't it just stay in place?!

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  • Either, nginx+php-fpm bad config or nginx+php-fpm cannot handle high query?

    - by The Wolf
    I have wordpress installed in my server configured(hopefully with nginx+php-fpm+mariaDB). I am trying to import using wordpress importer a 1.5MB xml file. Everytime I try to upload it using the importer, it got cut of... meaning just blank screen result.. Here is my error log: actually I just posted 2 of the errors [error] 858#0: *1 connect() failed (111: Connection refused) while connecting to upstream, client: xx.xxx.xx.xx, server: xxx.com, request: "GET xxxx.html HTTP/1.1", upstream: "fastcgi://127.0.0.1:9000", host: "xxx.com" [error] 858#0: *13 connect() failed (111: Connection refused) while connecting to upstream, client: xxx.x.xx.xx, server: xxx.com, request: "GET xxxx.php HTTP/1.1", upstream: "fastcgi://127.0.0.1:9000", host: "xxx.com" I don't know what is the reason why it can't process the wordpress export .xml. I already increased max_file_upload & etc., but nothing happens. Hope somebody can help me. Here are my conf: nginx.conf user nginx; worker_processes 8; error_log /var/log/nginx/error.log warn; pid /var/run/nginx.pid; events { worker_connections 1024; } http { include /etc/nginx/mime.types; default_type application/octet-stream; log_format main '$remote_addr - $remote_user [$time_local] "$request" ' '$status $body_bytes_sent "$http_referer" ' '"$http_user_agent" "$http_x_forwarded_for"'; access_log /var/log/nginx/access.log main; sendfile on; #tcp_nopush on; server_tokens off; keepalive_timeout 65; fastcgi_read_timeout 500; #gzip on; client_max_body_size 2M; php-fpm.conf ;;;;;;;;;;;;;;;;;;;;; ; FPM Configuration ; ;;;;;;;;;;;;;;;;;;;;; ; All relative paths in this configuration file are relative to PHP's install ; prefix. ; Include one or more files. If glob(3) exists, it is used to include a bunch of ; files from a glob(3) pattern. This directive can be used everywhere in the ; file. include=/etc/php-fpm.d/*.conf ;;;;;;;;;;;;;;;;;; ; Global Options ; ;;;;;;;;;;;;;;;;;; [global] ; Pid file ; Default Value: none pid = /var/run/php-fpm/php-fpm.pid ; Error log file ; Default Value: /var/log/php-fpm.log error_log = /var/log/php-fpm/error.log ; Log level ; Possible Values: alert, error, warning, notice, debug ; Default Value: notice ;log_level = notice ; If this number of child processes exit with SIGSEGV or SIGBUS within the time ; interval set by emergency_restart_interval then FPM will restart. A value ; of '0' means 'Off'. ; Default Value: 0 ;emergency_restart_threshold = 0 ; Interval of time used by emergency_restart_interval to determine when ; a graceful restart will be initiated. This can be useful to work around ; accidental corruptions in an accelerator's shared memory. ; Available Units: s(econds), m(inutes), h(ours), or d(ays) ; Default Unit: seconds ; Default Value: 0 ;emergency_restart_interval = 0 ; Time limit for child processes to wait for a reaction on signals from master. ; Available units: s(econds), m(inutes), h(ours), or d(ays) ; Default Unit: seconds ; Default Value: 0 ;process_control_timeout = 0 ; Send FPM to background. Set to 'no' to keep FPM in foreground for debugging. ; Default Value: yes daemonize = no ;;;;;;;;;;;;;;;;;;;; ; Pool Definitions ; ;;;;;;;;;;;;;;;;;;;; ; See /etc/php-fpm.d/*.conf [root@host etc]# vim php-fpm.conf [root@host etc]# vim php-fpm.conf ; Default Value: notice ;log_level = notice ; If this number of child processes exit with SIGSEGV or SIGBUS within the time ; interval set by emergency_restart_interval then FPM will restart. A value ; of '0' means 'Off'. ; Default Value: 0 ;emergency_restart_threshold = 0 ; Interval of time used by emergency_restart_interval to determine when ; a graceful restart will be initiated. This can be useful to work around ; accidental corruptions in an accelerator's shared memory. ; Available Units: s(econds), m(inutes), h(ours), or d(ays) ; Default Unit: seconds ; Default Value: 0 ;emergency_restart_interval = 0 ; Time limit for child processes to wait for a reaction on signals from master. ; Available units: s(econds), m(inutes), h(ours), or d(ays) ; Default Unit: seconds ; Default Value: 0 ;process_control_timeout = 0 ; Send FPM to background. Set to 'no' to keep FPM in foreground for debugging. ; Default Value: yes daemonize = no ;;;;;;;;;;;;;;;;;;;; ; Pool Definitions ; ;;;;;;;;;;;;;;;;;;;; ; See /etc/php-fpm.d/*.conf ps aux [root@host etc]# ps aux USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND root 1 0.0 0.1 2900 1380 ? Ss Jun02 0:00 init root 2 0.0 0.0 0 0 ? S Jun02 0:00 [kthreadd/9308] root 3 0.0 0.0 0 0 ? S Jun02 0:00 [khelper/9308] root 124 0.0 0.0 2464 576 ? S<s Jun02 0:00 /sbin/udevd -d root 460 0.0 0.1 35976 1308 ? Sl Jun02 0:00 /sbin/rsyslogd -i /var/run/syslogd.pid -c 5 root 474 0.0 0.0 8940 1028 ? Ss Jun02 0:00 /usr/sbin/sshd root 481 0.0 0.0 3264 876 ? Ss Jun02 0:00 xinetd -stayalive -pidfile /var/run/xinetd.pid root 491 0.0 0.1 6268 1432 ? S Jun02 0:00 /bin/sh /usr/bin/mysqld_safe --datadir=/var/lib/mysql --pid-file=/var/lib/mysql/host.busilak.com. mysql 584 0.1 6.8 679072 71456 ? Sl Jun02 0:04 /usr/sbin/mysqld --basedir=/usr --datadir=/var/lib/mysql --plugin-dir=/usr/lib/mysql/plugin --use root 586 0.0 0.3 12008 3820 ? Ss Jun02 0:01 sshd: root@pts/0 root 629 0.0 0.0 9140 756 ? Ss Jun02 0:00 /usr/sbin/saslauthd -m /var/run/saslauthd -a pam -n 2 root 630 0.0 0.0 9140 520 ? S Jun02 0:00 /usr/sbin/saslauthd -m /var/run/saslauthd -a pam -n 2 root 645 0.0 0.1 12788 1928 ? Ss Jun02 0:01 sendmail: accepting connections smmsp 653 0.0 0.1 12576 1728 ? Ss Jun02 0:00 sendmail: Queue runner@01:00:00 for /var/spool/clientmqueue root 691 0.0 0.1 7148 1184 ? Ss Jun02 0:00 crond root 698 0.0 0.1 6272 1688 pts/0 Ss Jun02 0:00 -bash root 1006 0.0 0.0 7828 924 ? Ss 00:30 0:00 nginx: master process /usr/sbin/nginx -c /etc/nginx/nginx.conf nginx 1007 0.0 0.1 8156 1724 ? S 00:30 0:00 nginx: worker process nginx 1008 0.0 0.1 8024 1360 ? S 00:30 0:00 nginx: worker process nginx 1009 0.0 0.1 8020 1356 ? S 00:30 0:00 nginx: worker process nginx 1011 0.0 0.1 8024 1360 ? S 00:30 0:00 nginx: worker process nginx 1012 0.0 0.1 8024 1360 ? S 00:30 0:00 nginx: worker process nginx 1013 0.0 0.1 8024 1360 ? S 00:30 0:00 nginx: worker process nginx 1014 0.0 0.1 8024 1360 ? S 00:30 0:00 nginx: worker process nginx 1015 0.0 0.1 8024 1344 ? S 00:30 0:00 nginx: worker process root 1030 0.0 0.2 25396 2904 ? Ss 00:30 0:00 php-fpm: master process (/etc/php-fpm.conf) apache 1031 0.0 1.9 40700 20624 ? S 00:30 0:00 php-fpm: pool www apache 1032 0.0 2.0 41924 21888 ? S 00:30 0:01 php-fpm: pool www apache 1033 0.0 1.9 41212 20848 ? S 00:30 0:01 php-fpm: pool www apache 1034 0.0 1.9 40956 20792 ? S 00:30 0:01 php-fpm: pool www apache 1035 0.0 2.0 41560 21556 ? S 00:30 0:02 php-fpm: pool www apache 1040 0.0 1.8 39292 19120 ? S 00:30 0:00 php-fpm: pool www root 1125 0.0 0.0 6080 1040 pts/0 R+ 01:04 0:00 ps aux netstat -l [root@host etc]# netstat -l Active Internet connections (only servers) Proto Recv-Q Send-Q Local Address Foreign Address State tcp 0 0 *:ssh *:* LISTEN tcp 0 0 localhost.localdomain:smtp *:* LISTEN tcp 0 0 localhost.locald:cslistener *:* LISTEN tcp 0 0 *:mysql *:* LISTEN tcp 0 0 *:http *:* LISTEN tcp 0 0 *:ssh *:* LISTEN Active UNIX domain sockets (only servers) Proto RefCnt Flags Type State I-Node Path unix 2 [ ACC ] STREAM LISTENING 60575947 /var/run/saslauthd/mux unix 2 [ ACC ] STREAM LISTENING 60574168 @/com/ubuntu/upstart unix 2 [ ACC ] STREAM LISTENING 60575873 /var/lib/mysql/mysql.sock Hope somebody can help me to figure out what is the problem.

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  • User Receiving Partial Downloads

    - by JGB146
    Some background: I run a subscription-based poker strategy video website. Our videos range in length from 30 mins up to 80 mins, and in size from 20MB up to 500MB. The site is on a shared server with hostmonster.com One of my users is having problems downloading some of the larger video file. He reports problems with anything over 100MB. Basically, he's only getting part of the file, which means that the video stops before the end. He has tried multiple computers from multiple locations. He reports that he is able to successfully download 500MB files from other sites. He is using Internet Explorer (version unknown) as his browser. I have suggested that he try Firefox or Chrome to see if their download managers work any better for him, but as of yet I have not heard anything back. He has also reported that his downloads do not report any filesize. I see the same thing (no file size reported), but I have not experienced any problems with the downloads themselves. We pass the downloads through a php script which verifies login information and records the download to our database before returning the file. I suspect this is why there is no filesize reported. What else should I ask the user? What other things could he or I try?

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  • How to configure SCSI hard drives and RAID for Poweredge 2850 web server

    - by Saul
    I'm trying to set up a Poweredge 2850 as a web server, but as a server novice it's causing me some confusion. Its a virgin install so no data to be lost as yet, so I'd like to get the best arrangement for setting up Windows Server 2008. The box will run IIS, a mail and FTP server. The current physical arrangement of the hot swap drives is 1 73GB 3 146GB 5 blank 0 73GB 2 146GB 4 146GB (but flashes green, amber off) When I enter the PERC config screens on boot up I've got Raid Ch- 0 ID 0 ONLIN A00-00 1 ONLIN A00-01 2 ONLIN A01-00 3 ONLIN A01-01 4 HOTSP I think that drives 0 and 1 are set to RAID 1 and drives 2 and 3 are also set to RAID 1, certainly I can see 2 logical drives, both raid 1 of 69880MB and 139900MB Now what I think I am getting here is that the 2 73GB drives mirror each other and the 2 146GB drives mirror 2? so by my noob thinking if a drive fails I can pull it, insert and new one and it will reduplicate from its matching pair? I think the flashing amber probably indicates a failing drive in slot 4, should that just be binned? What confuses me coming from a home user XP background is that when I load up Windows Server 2008 OS under my computer I only see a C drive of about 70GB capacity. i.e wheres the 146GB drive? Any advice appreciated

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  • Computer Comparison - which is "better"

    - by David Murdoch
    A company I work with recently replaced their old server and gave it to me. Their old server is a Dell PowerEdge 2600. I've been playing with the machine and even installed Windows Server 2008 on it...and it seems to run it pretty well. Here are the specs for the two machines: Dev Machine: AMD Athlon64 3000+ 2.38 GHz (overclocked from 1.8GHz [@ 280x8.5] - it is stable-ish) Memory (RAM): 1x1GB OCZ PC3200 (Dual-Channel) 300GB HD OS: Windows XP Pro (32bit) SuperPi 1M digit test: 40 seconds Dell PowerEdge 2600 Server: Intel Xeon CPU 2.8GHz 2.8GHz Memory (RAM): 512MBx2 (PC2700, not dual channel) 68GB HD (RAID 5) OS: Windows Server 2000 (32bit) SuperPi 1M digit test: 56 seconds [using 1 processor] (Themes and Aero-Flass UI turned off, of course) I use my computer to regularly run Photoshop CS5, Illustrator CS5, Flash CS5, 5 browsers (Chrome, FF, IE, Safari, Opera), iTunes, Visual Studio 2010, and Kaspersky Internet Security 2010 [sometimes simultaneously :-) ]. The SuperPi test has my dev machine coming in about 30% faster than the Server machine...though this could be due to the server running "Vista" with background processes prioritized. Do you think it would be realistic/advantageous for me to move from my dev machine to the Dell PowerEdge 2600? Is it possible to install additional DVD drives/burners on the server? Can I install my internal 300 GB hard drive on the server? Can I add some USB 2.0 ports? Note: I'll probably install Win XP Pro on the dev machine if I do switch. If not, are there any creative and useful way for me to take advantage of this server (with the goal of faster computing)?

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