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• Ubuntu root privs installation issue

  - by Pam

  I am a fairly new Ubuntu user (and Linux user, for that matter) and I just downloaded a program whose installer was a .sh file. Not thinking, I copied the installer to an /opt subdirectory, thinking that I was going to install the application there: sudo cp ~/Downloads/fooInstaller.sh /opt/someDir I can't remember, but I either had to use sudo because /opt required it, or I just used it without thinking, but in any case, I prefixed with sudo. Once in /opt/someDir, I executed the installer again, using sudo: sudo sh fooInstaller.sh The terminal went crazy, and a few seconds later, a graphical install wizard popped up that guided me through the rest of the process. At the end of the wizard I was prompted to launch the program, and I did, and everything was great. Until... I closed the program, and attempted to add it to my Ubuntu "panel" (the icon panel at the top of the screen). The program was installed to /usr/local/foo/theProgram, and so I specified that URL as the command in the custom app launcher. When I open the program through the panel/launcher (at the top of the screen), the program doesn't load or operate correctly. I get a lot of error messages complaining about being denied permissions. I'm assuming that this is a "superuser/installation/privs" issue, and not a problem with the application (hence this post at superuser.com instead of the application's forums), because when I launch the program from the terminal with sudo, it opens and executes perfectly fine, just like it did the first time around after the install wizard finished. I realize I'm probably going to have to uninstall the program completely, and re-install it differently. Finally, my question: After uninstalling, can I avoid all these issue by just running the installer (sh fooInstaller.sh) right out of my Downloads directory, sans the sudo prefix? If not, how do I get the program to install without root privs so that I can add it to my panel/launcher and get it executing correctly? Sorry for the long post but I didn't want to omit any details because, as I'm sure you can tell, I'm not really sure I know what I'm doing. Thanks for any help here!

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• Configure an Azure VM for Dynamic DNS for Cloud Services

  - by Adam

  I am trying to setup an azure VM with proper DNS to allow multiple cloud services to communicate across cloud service boundaries. As I understand it, I need to provide my own DNS server. I do not have any on-premise infrastructure, so I am trying to configure an Azure VM to act as my DNS. This SO question (http://stackoverflow.com/questions/21858926/azure-how-to-connect-one-cloud-service-with-other-in-one-virtual-network) is very similar to my setup. This article (http://msdn.microsoft.com/en-us/library/windowsazure/jj156088.aspx) describes my particular case: Name resolution between virtual machines and role instances located in the same virtual network, but different cloud services Here is what I have done: Created Azure Virtual Network and declared subnets for each of my cloud services. Created an Azure VM (Windows 2012 R2) with DNS enabled RDP to the VM and enabled the DNS role and installed features Added the appropriate NetworkConfiguration xml section to each of my cloud services .csfg files Re-deployed my cloud services I have verified that I setup the virtual network and networkconfiguration properly because my cloud service hosts are able to communicate with each other if I use the internal ips. However, name resolution doesn't appear to be working, and it doesn't appear that my cloud service roles can communicate with my DNS server. How do I configure my VM so that my different cloud services roles register themselves with my DNS server? EDIT: I think I am 1 step closer to getting this to work. The cloud services that I was using are in an old affinity group which is not supported by VMs, so I was unable to add my VM into my virtual network. I created a new VNET in a new affinity group with my VM added into it. However, I still don't know how to configure the azure VM's DNS server so that the cloud services register themselves for name resolution. Also, an added bonus guaranteed to get a +1 would be to explain if it is possible to register a DNS entry for the VIP for an internal endpoint of my cloud services so we can get load balancing. Thanks!

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• Mysql cluster strange behaviour

  - by Champion

  Hi Guys, I have 2 mysql clusters on two different servers with management node on each of them. It went down someway. I ran following commands to start the cluster: Start the management node on srv1: srv1: mysqlc/bin/ndb_mgmd --initial -f my_cluster/conf/config.ini --configdir=/home/mysql_cluster/my_cluster/conf Start the management node on srv2: srv2: mysqlc/bin/ndb_mgmd --initial -f my_cluster/conf/config.ini --configdir=/home/mysql_cluster/my_cluster/conf Start the ndbd nodes on srv1: srv1: mysqlc/bin/ndbd --initial -c localhost:1186 Start the ndbd nodes on srv2: srv2: mysqlc/bin/ndbd --initial -c localhost:1186 Start mysqld server on srv1: srv1: mysqlc/bin/mysqld --defaults-file=my_cluster/conf/my.cnf --user=root & and here is the problem. mysql server not loading the data. Only database names are present. All the tables which are ENGINE=ndbcluster are not being loaded. Tables with ENGINE=myisam are being loaded. Backup scripts helped me load the data. But this way I can't use cluster setup. Similar issue appeared when i started srv2. How can I resolve this issue ?

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• 100% iowait + drive faults in dmesg

  - by w00t

  Hi, I have a server on which resides a fairly visited web app. It has a raid1 of 2 HDDs, 64MB Buffer, 7200 RPM. Today it started throwing out errors like: kernel: ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6 frozen kernel: ata2.00: cmd b0/d0:01:00:4f:c2/00:00:00:00:00/00 tag 0 pio 512 in kernel: res 40/00:00:00:4f:c2/00:00:00:00:00/00 Emask 0x4 (timeout) kernel: ata2.00: status: { DRDY } kernel: ata2: hard resetting link kernel: ata2: SATA link up 3.0 Gbps (SStatus 123 SControl 300) kernel: ata2.00: max_sectors limited to 256 for NCQ kernel: ata2.00: max_sectors limited to 256 for NCQ kernel: ata2.00: configured for UDMA/133 kernel: sd 1:0:0:0: timing out command, waited 7s kernel: ata2: EH complete kernel: SCSI device sda: 976773168 512-byte hdwr sectors (500108 MB) kernel: sda: Write Protect is off kernel: SCSI device sda: drive cache: write back All day long it has been in load higher than 10-15. I am monitoring it with atop and it gives some bizarre readings: DSK | sda | busy 100% | read 2 | write 208 | KiB/r 16 | KiB/w 32 | MBr/s 0.00 | MBw/s 0.65 | avq 86.17 | avio 47.6 ms | DSK | sdb | busy 1% | read 10 | write 117 | KiB/r 17 | KiB/w 5 | MBr/s 0.02 | MBw/s 0.07 | avq 4.86 | avio 1.04 ms | I frankly don't understand why only sda is taking all the hit. I do have one process that is constantly writing with 1-2megs but what the hell.. 100% iowait?

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• Which server software and configuration to retrieve from multiple POP servers, routing by address to correct user

  - by rolinger

  I am setting up a small email server on a Debian machine, which needs to pick up mail from a variety of POP servers and figure out who to send it to from the address, but I'm not clear what software will do what I need, although it seems like a very simple question! For example, I have 2 users, Alice and Bob. Any email to [email protected] ([email protected] etc) should go to Alice, all other mail to domain.example.com should go to Bob. Any email to [email protected] should go to Bob, and [email protected] should go to Alice Anything to *@bobs.place.com should go to Bob And so on... The idea is to pull together a load of mail addresses that have built up over the years and present them all as a single mailbox for Bob and another one for Alice. I'm expecting something like Postfix + Dovecot + Amavis + Spamassassin + Squirrelmail to fit the bill, but I'm not sure where the above comes in, can Postfix deal with it as a set of defined regular expressions, or is it a job for Amavis, or something else entirely? Do I need fetchmail in this mix, or is its role now included in one of the other components above. I think of it as content-filtering, but everything I read about content-filtering is focussed on detecting spam rather than routing email.

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• Gray Progress Bar in Macbook Boot caused by Partition Fault

  - by Konstantin Bodnya

  Here's my problem: When I try to load my macbook it shows the gray progress bar. It takes a while to fill the whole progress and after it macbook just shuts down. I tried to boot from recovery partition and run Disk Utility to repair it. Disk Utility showed my "Macintosh HD" in a gray color and failed to repair it. I thought all my data was lost, but then I tried the following: So I booted into ubunto from live usb and it successfully mounted my macintosh hd hfs+ partition. Parted shows me the following partitions on my disk: Disk /dev/sda: 500GB Sector size (logical/physical): 512B/512B Partition Table: gpt Number Start End Size File system Name Flags 1 20.5kB 210MB 210MB fat32 EFI System Partition boot 2 210MB 499GB 499GB hfs+ Macintosh HD 3 499GB 500GB 650MB hfs+ Recovery HD Seems legit except for FAT32 for EFI System Partition. Since all my data is okay and backed up what should I do to recover the system. I don't really want to reinstall all the system though I believe there's a command to make it allright in linux. Thank you everyone!

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• Nginx + PHP5-FPM repeated cut outs 502

  - by James

  I've seen a number of questions here that highlight random 502 (Nginx + PHP-FPM = "Random" 502 Bad Gateway) and similar time outs when using Nginx + PHP-FPM. Even with all the questions, I'm still unable to find a solution. Using Ubuntu 10.10 + Nginx + PHP5-FPM + APC and every 1 out of 4 requests ends in a timeout and failure. This isn't a load issue or large traffic, it happens even in dev environment with one person. I am doing this across 3 1GB machines, each with the same configurations and same problems. fastcgi_params fastcgi_param QUERY_STRING $query_string; fastcgi_param REQUEST_METHOD $request_method; fastcgi_param CONTENT_TYPE $content_type; fastcgi_param CONTENT_LENGTH $content_length; fastcgi_param SCRIPT_NAME $fastcgi_script_name; fastcgi_param REQUEST_URI $request_uri; fastcgi_param DOCUMENT_URI $document_uri; fastcgi_param DOCUMENT_ROOT $document_root; fastcgi_param SERVER_PROTOCOL $server_protocol; fastcgi_param GATEWAY_INTERFACE CGI/1.1; fastcgi_param SERVER_SOFTWARE nginx/$nginx_version; fastcgi_param REMOTE_ADDR $remote_addr; fastcgi_param REMOTE_PORT $remote_port; fastcgi_param SERVER_ADDR $server_addr; fastcgi_param SERVER_PORT $server_port; fastcgi_param SERVER_NAME $server_name; fastcgi_param REDIRECT_STATUS 200; /etc/php5/fpm/main.conf ; FPM Configuration ; ;include=/etc/php5/fpm/*.conf ; Global Options ; pid = /var/run/php5-fpm.pid error_log = /var/log/php5-fpm.log ;log_level = notice ;emergency_restart_threshold = 0 ;emergency_restart_interval = 0 ;process_control_timeout = 0 ;daemonize = yes ; Pool Definitions ; include=/etc/php5/fpm/pool.d/*.conf /etc/php5/fpm/pool.d/www.conf [www] listen = 127.0.0.1:9000 ;listen.backlog = -1 ;listen.allowed_clients = 127.0.0.1 ;listen.owner = www-data ;listen.group = www-data ;listen.mode = 0666 user = www-data group = www-data ;pm.max_children = 50 pm.max_children = 15 ;pm.start_servers = 20 pm.min_spare_servers = 5 ;pm.max_spare_servers = 35 pm.max_spare_servers = 10 ;pm.max_requests = 500 ;pm.status_path = /status ;ping.path = /ping ;ping.response = pong request_terminate_timeout = 30 ;request_slowlog_timeout = 0 ;slowlog = /var/log/php-fpm.log.slow ;rlimit_files = 1024 ;rlimit_core = 0 ;chroot = chdir = /var/www ;catch_workers_output = yes

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• How can I split 200Mbps of streaming traffic into routers?

  - by Jared

  As the title says, I have 200Mbps of streaming video traffic coming into my command center. How do I split the load between routers? Setup is like this: fiber --- router --- switch --- workstations I'm sorry I haven't dealt with this much traffic before. so please be gentle if you're going to kick me out :) EDITED FOR DETAILS: Okay, this specific project is for our company's IP CCTV system. We have deployed over 100++ cameras all over a building/campus and we have estimated each camera to take about 2Mbps of bandwidth each. Now, they're all connected to a switch and that's entirely fine. But coming into our command center, they have to be on a router since it'll get more than 200++ cameras next year (and I don't want to have too many hosts on one subnet). My plan was to have the 1st hundred on a 172.16.9.x block and the 2nd hundred on a 172.16.10.x block (all /24). The servers I have are currently sized to match (about 5 dual 6-core xeons) and I'd have about 19 workstations all streaming video from the 5 servers. (servers pull video from the cameras). But 200Mbps of constant traffic? How the hell do I even break this up? I need to have 1 gateway, to manage the routes... I honestly think I'm way in over my head.

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• How to run a WebPy server on port 8080 using DDNS of dlink router and to access this site from internet?

  - by nuke1010

  I have two major issue with setting up a web server using my dlink DIR-600L router. Issue 1: I run a WebPy server on port 8080. But the DDNS service providers (like dlinkddns.com or dyndns.org) only allows port 80. I can run the server in port 80 with sudo command. But my server become vulnerable if i give root access. So I tried port forwarding in the router and server. But no use. I don't know if I done that correctly. Issue 2: Even though the server runs on port 80, I can access my site from my local machines only using registered domain names ( say, nikz.dyndns.org). No one on internet cannot load this site even when its totally up. As I observed server log, the request from other clients never reached my server. I need to run this server on port 8080 and i need to access this site from internet. How can I do it? any idea?

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• I am getting this error "ssh_exchange_identification:"

  - by adnan kamili

  Every thing was working fine till yesterday and now suddenly I am getting this error if I type ssh -D 9999 [email protected] ssh_exchange_identification: Connection closed by remote host Here is the output: OpenSSH_5.8p1 Debian-7ubuntu1, OpenSSL 1.0.0e 6 Sep 2011 debug1: Reading configuration data /etc/ssh/ssh_config debug1: Applying options for * debug2: ssh_connect: needpriv 0 debug1: Connecting to 172.16.30.30 [172.16.30.30] port 22. debug1: Connection established. debug3: Incorrect RSA1 identifier debug3: Could not load "/home/adnan/.ssh/id_rsa" as a RSA1 public key debug2: key_type_from_name: unknown key type '-----BEGIN' debug3: key_read: missing keytype debug2: key_type_from_name: unknown key type 'Proc-Type:' debug3: key_read: missing keytype debug2: key_type_from_name: unknown key type 'DEK-Info:' debug3: key_read: missing keytype debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug2: key_type_from_name: unknown key type '-----END' debug3: key_read: missing keytype debug1: identity file /home/adnan/.ssh/id_rsa type 1 debug1: Checking blacklist file /usr/share/ssh/blacklist.RSA-2048 debug1: Checking blacklist file /etc/ssh/blacklist.RSA-2048 debug1: identity file /home/adnan/.ssh/id_rsa-cert type -1 debug1: identity file /home/adnan/.ssh/id_dsa type -1 debug1: identity file /home/adnan/.ssh/id_dsa-cert type -1 debug1: identity file /home/adnan/.ssh/id_ecdsa type -1 debug1: identity file /home/adnan/.ssh/id_ecdsa-cert type -1 ssh_exchange_identification: Connection closed by remote host

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• Where is my CPU usage going?

  - by Josh

  My Ubuntu 10.04 Lucid virtual machine is saying it's at 100% CPU usage... but all I'm running is Thunderbird. According to top, CPU usage should be ~25.9%... How do I interpret this conflicting output from top? top - 13:55:26 up 3:35, 4 users, load average: 3.03, 2.59, 2.48 Tasks: 178 total, 1 running, 177 sleeping, 0 stopped, 0 zombie Cpu(s): 16.0%us, 79.7%sy, 0.0%ni, 0.0%id, 0.0%wa, 1.3%hi, 3.0%si, 0.0%st Mem: 509364k total, 479108k used, 30256k free, 3092k buffers Swap: 2096440k total, 58380k used, 2038060k free, 225116k cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 7708 jnet 20 0 480m 109m 17m S 18.4 22.1 21:59.14 thunderbird-bin 4615 jnet 20 0 5488 1268 1040 S 2.3 0.2 5:00.03 nx-rootless-ses 7124 jnet 20 0 56688 27m 4812 S 2.0 5.5 6:35.09 nxagent 6724 nx 20 0 9628 1400 636 S 1.6 0.3 3:26.59 sshd 30106 root 20 0 2544 1236 908 R 0.7 0.2 0:00.33 top 19 root 20 0 0 0 0 S 0.3 0.0 0:22.45 ata/0 38 root 20 0 0 0 0 S 0.3 0.0 0:05.53 scsi_eh_1 345 root 20 0 0 0 0 S 0.3 0.0 0:04.72 kjournald 1719 root 20 0 3260 1192 944 S 0.3 0.2 0:17.36 vmware-guestd 1 root 20 0 2804 1356 940 S 0.0 0.3 0:01.99 init 2 root 20 0 0 0 0 S 0.0 0.0 0:00.01 kthreadd 3 root RT 0 0 0 0 S 0.0 0.0 0:00.00 migration/0 4 root 20 0 0 0 0 S 0.0 0.0 0:00.15 ksoftirqd/0 5 root RT 0 0 0 0 S 0.0 0.0 0:00.00 watchdog/0 ... Specifically I'm referring to the fact that the CPU usage totals show 0% idle time: Cpu(s): 16.0%us, 79.7%sy, 0.0%ni, 0.0%id, 0.0%wa, 1.3%hi, 3.0%si, 0.0%st Yet when adding up the percentages in the %CPU column I get 25.9%, not 100%!

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• X11 performance problem after upgrading from Centos3 to Centos5 with an ATI Rage XL

  - by Marcelo Santos

  After upgrading a computer from Centos3 to Centos5 an application that does a lot of scrolling took a very high performance hit. top tells me that X is using a lot of CPU and that was not happening before. The machine has an ATI Rage XL with 8MB and X is using the ati driver as there is no proprietary ATI driver for this board on linux. The xorg.conf: Section "Device" Identifier "Videocard0" Driver "ati" EndSection Section "Screen" Identifier "Screen0" Device "Videocard0" DefaultDepth 24 SubSection "Display" Viewport 0 0 Depth 24 Modes "1024x768" "800x600" "640x480" EndSubSection EndSection Section "DRI" Group 0 Mode 0666 EndSection A similar machine that still has Centos3 installed is able to start DRI on the X server while this one is not, this is the Xorg.0.log for the Centos5 machine: drmOpenDevice: node name is /dev/dri/card0 drmOpenDevice: open result is -1, (No such device or address) drmOpenDevice: open result is -1, (No such device or address) drmOpenDevice: Open failed drmOpenDevice: node name is /dev/dri/card0 drmOpenDevice: open result is -1, (No such device or address) drmOpenDevice: open result is -1, (No such device or address) drmOpenDevice: Open failed [drm] failed to load kernel module "mach64" (II) ATI(0): [drm] drmOpen failed (EE) ATI(0): [dri] DRIScreenInit Failed (II) ATI(0): Largest offscreen areas (with overlaps): (II) ATI(0): 1024 x 1279 rectangle at 0,768 (II) ATI(0): 768 x 1280 rectangle at 0,768 (II) ATI(0): Using XFree86 Acceleration Architecture (XAA) Screen to screen bit blits Solid filled rectangles 8x8 mono pattern filled rectangles Indirect CPU to Screen color expansion Solid Lines Offscreen Pixmaps Setting up tile and stipple cache: 32 128x128 slots 10 256x256 slots (==) ATI(0): Backing store disabled (==) ATI(0): Silken mouse enabled (II) ATI(0): Direct rendering disabled (==) RandR enabled I also tried using EXA instead of XAA and setting: Option "AccelMethod" "XAA" Option "XAANoOffscreenPixmaps" "true" uname -a Linux sir5.erg.inpe.br 2.6.18-128.7.1.el5 #1 SMP Mon Aug 24 08:20:55 EDT 2009 i686 i686 i386 GNU/Linux rpm -qa | grep xorg-x11-server xorg-x11-server-utils-7.1-4.fc6 xorg-x11-server-sdk-1.1.1-48.52.el5 xorg-x11-server-Xvfb-1.1.1-48.52.el5 xorg-x11-server-Xnest-1.1.1-48.52.el5 xorg-x11-server-Xorg-1.1.1-48.52.el5 The drmOpenDevice error continues when using the suggested Option "AIGLX" "true".

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• Mod disk_cache permanent caching images and disabling reacurring header updates

  - by user135532

  I am trying to get mod disk_cache to permantly cache images retrieved from an image server on the webserver using ProxyPass. While the image is being retrieved correctly from the server and is served from the cache on further requests, then I am still having the webserver call the image server and causing the cached header to be updated. Because of load concerns then I need to never call the image server on a specific url again after it has been cached once, or extend the refresh time for as long as possible. The webserver is IHS 7.0 The mod's are mod_disk_cache.so, mod_cache.so, mod_proxy.so Version 2.2.8.0 Following is from my httpd.conf: ProxyPass /webserver/media/images/ http://imageserver.com/ws/media/images/ # Caching pictures <IfModule mod_cache.c> <IfModule mod_disk_cache.c> CacheDefaultExpire 2628000 #CacheDisable CacheEnable disk /webserver/media/images/ CacheIgnoreCacheControl On CacheIgnoreHeaders Cookie Referer User-Agent X-Forwarded-For X-Forwarded-Host X-Forwarded-Server Accept-Language Accept Host CacheIgnoreNoLastMod On CacheIgnoreQueryString Off #CacheIgnoreURLSessionIdentifiers CacheLastModifiedFactor 10000000.1 #CacheLock on #CacheLockMaxAge 5 #CacheLockPath CacheMaxExpire 1576800 CacheStoreNoStore On CacheStorePrivate On CacheDirLength 2 CacheDirLevels 3 CacheMaxFileSize 1000000 CacheMinFileSize 1 CacheRoot c:/cacheroot2 </IfModule> </IfModule>

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• Missing boot files in Windows 8

  - by Alex F. Sherman

  I had a partition with Windows 8 Release Preview, Windows' System Reserved partition and the empty space of the beginning of disk. I moved two partitions to the beginning of disk using Ubuntu Live CD and GParted. After that, the Windows Loader didn't boot and throw an error about missing files. I fixed it using the commands: bootsect /nt60 sys /force /mbr bootrec /rebuildbcd bootrec /fixboot bootrec /fixmbr When I used "Automatic repair" option from "Advanced boot" menu, it throw an error like: Windows can't fix your boot problems. For more information see file C:\Windows\System32\LogFiles\Srt\SrtTrail.txt In this file I found a description of the system repair actions and at the end of file: Boot status indicates that the OS booted successfully. Now, when I use the Advanced boot menu from Windows 8 (PC settings - General - Advanced startup) I receive an error: Restart your PC to try again. It looks like something didn't load correctly. Restarting might fix the problem. If this happens more than once, you might also be able to find help by searching online for the specific error code. Erorr code: 0x8007090. 0x80070490 is the error code ERROR_NOT_FOUND. What are the missing boot files and how can I restore them? List of files in System Reserved Partition: B:\bootmgr B:\BOOTNXT B:\Boot\BCD B:\Boot\BCD.LOG B:\Boot\BCD.LOG1 B:\Boot\BCD.LOG2 B:\Boot\BOOTSTAT.DAT B:\Boot\Fonts B:\Boot\memtest.exe B:\Boot\qps-ploc B:\Boot\Resources B:\Boot\Resources\bootres.dll and many *.mui and *.ttf files.

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• 2000 Server, User can't logon

  - by Mike I

  I hope you can help me. I recently upgraded a workstation at my office (to a whole new machine) and ran into a pretty serious problem. Friday until 5:00 PM, I could access my mail on 2000 Exchange server. When I shut the old workstation down and put in the new workstation, I tried to set up an account. When I put the server name in appropriate field and typed my username and hit check names, my username does not come up. So to troubleshoot, (It also is a SMB server) I try to logon to my file share. (My local credentials are the same as server credientials of user account) When I try to logon to share, I just get the Username/Password screen (Never had gotten that before since credentials are the same) Again, in troubleshooting mode, I try to log on to my user from another workstation. Still can't authenticate via my user. Every other user can authenticate and load up their shares/mailboxes. I have restored Exchange from the backup as of 3 days ago (Thursday) but the exact same issue is still there. I really do not understand what is wrong and what else I can do to troubleshoot. If anyone has some pointers for me, I will surely accept them. Thanks, Mike

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• Bootable GRUB partition

  - by MA1

  I have a customized live fedora 12 USB which is working fine. What i want to do is to make a partition of my hard disk bootable so that my customized fedora can be run from hard disk. To accomplish this i did the following steps: Created a primary partition(/dev/sda2) and format it as ext3 and set it as active. Copy all the files in the live usb to /dev/sda2. Following are the live usb contents(all directories): a. boot b. EFI c. LiveOS d. syslinux Then i installed the GRUB in boot/grub Created the grub.conf in boot/grub Following are the contents of each directory in the USB: syslinux/ boot.cat isolinux.bin splash.jpg vesamenu.c32 initrd0.img ldlinux.sys syslinux.cfg vmlinuz0 LiveOS/ livecd-iso-to-disk osmin.img squashfs.img EFI/ boot/ boot.conf grub.conf boot.efi bootia32.conf bootia32.efi splash.jpg splash.xpm.gz vesamenu.c32 initrd0.img isolinux.bin isolinux.cfg vmlinuz0 boot/grub/ core GRUB files grub.conf olpc.fth Following are contents of grub.conf default=0 splashimage=/EFI/boot/splash.xpm.gz timeout 2 hiddenmenu title funLinux kernel /EFI/boot/vmlinuz0 root=live:LABEL=myFun rootfstype=auto ro liveimg quiet ssb.blacklist=1 selinux=0 vga=normal nomodeset rhgb initrd /EFI/boot/initrd0.img Now when i try to boot from the hard disk it shows the grub menu and fedora starting to load but during loading it said No root device found Boot has failed, sleeping forever So, where is the problem? what i am doing wrong?

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• Compiled ruby fails to find curses

  - by Hamish Downer

  I'm attempting to install the sup MUA but I'm having trouble. When I try to run it, it can't find curses: /usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require': no such file to load -- curses (LoadError) ... I am installing on a server running CentOS 5. I have compiled ruby and rubygems from source, and then installed sup using rubygems. I followed this article to compile ruby. I have found having a similar problem on ubuntu. The fix suggested there is to install libcurses-ruby, but I can't find a similarly named package in CentOS. I have installed the ncurses-devel package, as that was required for installing sup using gem. I have also installed the ncurses, cursesx and rbcurse gems, but none of these have fixed the problem. The article above about compiling ruby said you had to recompile the zlib extension, after doing: cd ext/zlib sudo ruby extconf.rb --with-zlib-include=/usr/include --with-zlib-lib=/usr/lib cd ../.. sudo make sudo make install So I've tried a few variants in ext/curses. The top few lines of ext/curses/extconf.rb are require 'mkmf' dir_config('curses') dir_config('ncurses') dir_config('termcap') So I've tried a few variants of setting paths: sudo ruby extconf.rb --with-curses-include=/usr/include --with-curses-lib=/usr/lib --with-ncurses-include=/usr/include --with-ncurses-lib=/usr/lib --with-termcap-lib=/lib sudo ruby extconf.rb --with-curses-include=/usr/include --with-curses-lib=/usr/lib --with-termcap-lib=/lib and re-doing the make, but to no avail as yet. Any ideas to move it forward are welcome.

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• Installing Trac on Windows under Apache 2.2?

  - by Warren P

  Trac is a python-powered bug-tracking and project-management app. According to Trac's wiki, there are several options for installing Trac, a standalone server (tracd), or under a dedicated webserver using one of these options: FastCGI - Not available on windows. mod_wsgi - No version of mod_wsgi available for Apache 2.2.22 and Python 2.7.3-amd64 that actually runs on my system! mod_python - no longer recommended, as mod_python is not actively maintained anymore) CGI -should not be used, as the performance is far from optimal) That leaves me with zero ways to run Trac on Windows. Apache 2.2.22 with ModWSGI loading, crashes the Apache2.2 service on startup without any error logs. Disabling the line in the apache configuration to load mod_wsgi restores sanity. I just want an installation of Trac on windows with Authentication enabled. I am unable to get authenetication to work using basic tracd like this: tracd -p 8000 --basic-auth="c:\tmp,c:\tmp\Passwords.md5.txt,mycompany" c:\tmp\RootFolder And I am unable to get Mod_WSGI installed. I'm going to keep trying to figure out a combination that works, I suspect I should have installed 32 bit python instead of 64 bit python, to start with. Did I do wrong to install Python 64 bit 2.7.3? I tried again with all 32 bit components, and still can't get MOD_WSGI to work with apache 2.2.22. I'm going to try to compile mod_wsgi myself with Visual C++ Express 2010, but it seems to me that it ought to be easier than this to get Trac running on windows, with authentication. Is there a way to run Trac on Windows, under Apache, with authentication? The last "Trac on windows" article died in 2008, leaving only this internet archive link for "Trac on windows" setup.

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• SuPHP custom php.ini doesn't get read

  - by Mathieu Dumoulin

  Took me about 4 hours to get a FastCGI + SuPHP running off Ubuntu 11.10 and i'm now happy that it works mighty fine except for ONE big problem. Custom php.ini's don't seem to load. I tried changing some options and then firing off a phpinfo() and nothing changes in the phpinfo() which leads me to think that there is definitely a problem with the loading of the configuration file. <IfModule mod_suphp.c> AddHandler x-httpd-php .php <Location /> SuPHP_AddHandler x-httpd-php </Location> suPHP_ConfigPath /home/mdumoulin/Documents/tests/tests suPHP_Engine on </IfModule> As you can see, i took great care in making sure i wasn't referencing the php.ini file itself but the directory of the vhost. In the php.ini located in "/home/mdumoulin/Documents/tests/tests/php.ini", you can find: [PHP] error_reporting = E_ALL & ~E_DEPRECATED & ~E_NOTICE display_errors = Off And the log in /var/log/suphp/suphp.log doesn't contain anything relevant, (only old errors that occured before this post while i was testing suphp... So i'm stumped there, dunno what more i can do! Anyone got an idea? EDIT: FINALY, got time to work on this, i disabled FCGI and only enabled SuPHP but after restarting i still see "Server API: CGI/FastCGI". Is this what i should be getting or not? I believe that it's normal i get CGI since SUPHP works with a CGI... But i'm not too sure anymore...

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• Viability of Apache (MPM Worker), FastCGI PHP 4/5.2/5.3, and MySQL 5

  - by Adrian

  My server will be hosting numerous PHP web applications ranging from Joomla, Drupal, and some legacy (read: PHP4) and other custom-built code inherited from clients. This will be a development machine used by a dozen or so web developers and issues like fluctuating loads or particularly high load expectations are not important. Now, my question: are there any concerns I should know about when using Apache w/ MPM Worker, PHP 4/PHP 5.2/PHP 5.3 (all via FastCGI), and MySQL 5 (with a query cache of 64MB)? I have not tested the various applications extensively and I have only recently learned how to install PHP and utilize it via FastCGI (rather than mod_php, which in this case seemed impossible (considering the multiple versions of PHP and the desire to use MPM Worker over MPM Prefork)). I have come to understand that there could be concerns regarding XCache and APC, namely non-thread-safety issues where data becomes corrupted and the capability to use MPM Worker becomes null and void. Is this a valid concern? I have been using my personal testing server (running Ubuntu Server Edition 10.04 in VirtualBox) which has 2GB of RAM available to it. Here is the configuration used (the actual server will likely use a configuration more tailored to suit it's purposes): Apache: Server version: Apache/2.2.14 (Ubuntu) Server built: Apr 13 2010 20:22:19 Server's Module Magic Number: 20051115:23 Server loaded: APR 1.3.8, APR-Util 1.3.9 Compiled using: APR 1.3.8, APR-Util 1.3.9 Architecture: 64-bit Server MPM: Worker threaded: yes (fixed thread count) forked: yes (variable process count) Worker: <IfModule mpm_worker_module> StartServers 2 MinSpareThreads 25 MaxSpareThreads 75 ThreadLimit 64 ThreadsPerChild 25 MaxClients 400 MaxRequestsPerChild 2000 </IfModule> PHP ./configure (PHP 4.4.9, PHP 5.2.13, PHP 5.3.2): --enable-bcmath \ --enable-calendar \ --enable-exif \ --enable-ftp \ --enable-mbstring \ --enable-pcntl \ --enable-soap \ --enable-sockets \ --enable-sqlite-utf8 \ --enable-wddx \ --enable-zip \ --enable-fastcgi \ --with-zlib \ --with-gettext \ Apache php-fastcgi-setup.conf FastCgiServer /var/www/cgi-bin/php-cgi-5.3.2 FastCgiServer /var/www/cgi-bin/php-cgi-5.2.13 FastCgiServer /var/www/cgi-bin/php-cgi-4.4.9 ScriptAlias /cgi-bin-php/ /var/www/cgi-bin/

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• Where to place Nginx IP blacklist config file?

  - by ProfessionalAmateur

  I have an Nginx web server hosting two sites. I created a blockips.conf file to blacklist IP addresses that are constantly probing the server and included this file in the nginx.conf file. However in my access logs for the sites I still see these IP addresses showing up. Do I need to include the black list in each site's conf instead of the global conf for Nginx? Here is my nginx.conf user nginx; worker_processes 1; 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; keepalive_timeout 65; include /etc/nginx/conf.d/*.conf; # Load virtual host configuration files. include /etc/nginx/sites-enabled/*; # BLOCK SPAMMERS IP ADDRESSES include /etc/nginx/conf.d/blockips.conf; } blockips.conf deny 58.218.199.250; access.log still shows this IP address. 58.218.199.250 - - [27/Sep/2012:06:41:03 -0600] "GET http://59.53.91.9/proxy/judge.php HTTP/1.1" 403 570 "-" "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)" "-" What am I doing incorrectly?

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• Liferay - Verify each node in a cluster

  - by Schrute

  In this example, I have two clustered instances of Liferay using bundled Tomcat running, using cluster link and shared documents. Let's say the name of the public community is fubar and friendy URL used is fubar.lipsum.com. Let's say the ports listening on each server is 8080. If I go to both server1:8080 or server2:8080 I will get the default page for Liferay. How can I test fubar.lipsum.com on each node by using the backend server, so I can verify each server? If I test it, it just goes to the load balancer, I wish there was a way to append to the backend connection to bring it up. I can add the friendly URL to my local machines hosts file and this seems to kinda work, but then once something is called in the application, it tries to go out again from the backend server and then uses SSL and then we have problems. I think I may be able to do port forwarding, but this seems like a basic thing we should be able to do and what I've found so far in the admin docs has not helped. Using the option to print the server name in the page details isn't an option either.

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• Windows 8, IIS8 how to make PHP imagick work

  - by Laci K

  I'm new to IIS server before IIS for 6 years I used Apache 2.X and with Apache imageMagick and its PHP module imagick worked just fine even with x64 version of PHP and Apache 2.4 and imageMagick. I tried to make imagick to work with IIS8 but it wont work. I always get the typical PHP startup warning in my log PHP Startup: Unable to load dynamic library 'C:\Program Files (x86)\iis express\PHP\v5.4\ext\php_imagick.dll' - %1 is not a valid Win32 application. in Unknown on line 0 And the next thing why is IIS loading php from IIS express folder if I have php in the program files? But actually I dont care until it works :) So what I did so far I unistalled imageMagick 6.7.X 64bit version and installed the latest x86 version, tested it in command line and it worked, than I looked up on net the latest imagick DLL which was I think the 3.1.0RC2 (founded here http://www.peewit.fr/imagick/) than I copied the dll to PHP's ext folder than edited php.ini and added the imagick to the dynamic extensions after that I restarted IIS and than nothing :( I got the error which I wrote earlier. Today I installed PEAR package Installer because I read somewhere that someone made it work with it but he also mentioned, that he needed to comply wincache too. Isn't there any easier solutions to make it work? Could someone maybe write me a step by step guide how to make this work.

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• I am under DDoS. What can I do?

  - by Falcon Momot

  This is a Canonical Question about DoS and DDoS mitigation. I found a massive traffic spike on a website that I host today; I am getting thousands of connections a second and I see I'm using all 100Mbps of my available bandwidth. Nobody can access my site because all the requests time out, and I can't even log into the server because SSH times out too! This has happened a couple times before, and each time it's lasted a couple hours and gone away on its own. Occasionally, my website has another distinct but related problem: my server's load average (which is usually around .25) rockets up to 20 or more and nobody can access my site just the same as the other case. It also goes away after a few hours. Restarting my server doesn't help; what can I do to make my site accessible again, and what is happening? Relatedly, I found once that for a day or two, every time I started my service, it got a connection from a particular IP address and then crashed. As soon as I started it up again, this happened again and it crashed again. How is that similar, and what can I do about it?

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• Nginx multiple upstream servers on the same domain via diferent url

  - by Barry

  Hello. I am trying to rout trafic to different upstream servers (that serve different applications and not for load balancing). The incoming trafic has the same domain name but different URL. Here is an example of my configuration: http { upstream backend1 { server 127.0.0.1:8080 fail_timeout=0; server 127.0.0.1:8081 fail_timeout=0; } upstream backend2 { server 127.0.0.1:8090 fail_timeout=0; server 127.0.0.1:8091 fail_timeout=0; } server { listen 80; server_name my_server.com; root /home/my_server; location /serve_me { fastcgi_pass backend1; include fastcgi_params; } location / { fastcgi_pass backend2; include fastcgi_params; } } } It seems that whatever trafic comes in (including "my_server.com/serve_me") goes to backend2. How do I make queries that start with /serve_me to be directed to backend1? Thanks, Barry.

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