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  • How to copy directories using debugfs?

    - by tjbp
    The debugfs manpage gives the impression that the command 'rdump . .' will recursively copy all files found on the specified filesystem from the debugfs cwd to the native filesystem's cwd. Instead I seem to receive a syntax error, and no copy is initiated? These are the commands I run: cd /path/to/transfer/destination debugfs /dev/sda1 -R rdump . . My task is to copy the entire contents of a clean yet unmountable USB storage device to its host machine's HD. The host machine does not support the inode size used by the USB device's filesystem (256) and its software is not upgradeable, so my intention was to use debugfs to transfer the files. If anyone has any other suggestions for this task I'd be grateful.

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  • CentOS default never fsck root partition on start up?

    - by wwwpanda
    Most documentation or sites will say use "tune2fs -l " to check if the system will do fsck on the system partitions on next boot, in particular, should look at "Mount count" and "Maximum mount count" values. However, I notice for default CentOS 5 or 6 installation, when I check against the root partition, I always noticed something like this from tune2fs output: ... Mount count: 91 Maximum mount count: -1 Last checked: Thu Oct 29 18:48:14 2009 Check interval: 0 (<none>) ... i.e. the max. mount count is set to "-1". That makes me wonder does it mean CentOS (or Red Hat) won't check the root partition at all? I check the fstab, the last number for root partition is still "1" as usual. If the OS does fsck the root partition during startup, how can I tell when (i.e. after how many reboots or when) will the OS will start fsck the root parition during startup?

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  • Mounted HDD not having enough permissions from Apache/PHP

    - by Dan
    Piwigo gallery, on apache and php. The root system is a RAID 128GB. /var/www/html is on the root file system. Mounted the 320GB hdd to /var/www/html/320 using defaults, it's an ext4 fs. Put a symlink to it in /var/www/html/galleries which is read by the gallery script so I can upload images to there, then click sync. It gives me the error: [./galleries/] PWG-ERROR-NO-FS (File/directory read error) PWG-ERROR-NO-FS: The file or directory cannot be accessed (either it does not exist or the access is denied) chmod 777 set on /dev/sdb1, /var/www/html, and /var/www/html/320 as well as the symlink galleries too. All recursive. chown apache:apache to everything too. PHP just can't read/write to it. I tried with and without the symlink, I've tried everything I can think of. Nothing. Any ideas how I can give apache/php permission to read/write to this drive? With 777 permissions all around it should already be able to.

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  • Transparent Squid : Logging client ip problem

    - by llazzaro
    Hello, I am using the following rules in iptables in my network to use a transparent proxy * iptables -t nat -A PREROUTING -i eth0 -s ! squid-box -p tcp --dport 80 -j DNAT --to squid-box:3128 * iptables -t nat -A POSTROUTING -o eth0 -s local-network -d squid-box -j SNAT --to iptables-box * iptables -A FORWARD -s local-network -d squid-box -i eth0 -o eth0 -p tcp --dport 3128 -j ACCEPT But my squid log, always logs gateway IP (172.16.0.1) Do you know an alternative to not lose client IP? (of course avoid saing manual proxy setup!)

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  • HIGH CPU USAGE + low memory usage

    - by hadi
    as you can see in below , there are high cpu usage by httpd request. please help me to decrease them. thanks. 28577 apache 15 0 99676 53m 3488 S 21 0.2 1:13.67 httpd 28568 apache 15 0 99676 53m 3496 S 19 0.2 1:14.92 httpd 28608 apache 15 0 99676 53m 3428 R 19 0.2 0:28.28 httpd 28615 apache 15 0 99676 53m 3436 R 19 0.2 0:25.33 httpd 28616 apache 15 0 99676 53m 3440 S 19 0.2 0:25.83 httpd 28619 apache 15 0 99676 53m 3436 R 19 0.2 0:26.12 httpd 28635 apache 15 0 97.9m 54m 3416 S 19 0.2 0:24.86 httpd 28558 apache 15 0 97.9m 54m 3432 R 17 0.2 1:40.75 httpd 28560 apache 15 0 97.9m 54m 3496 R 17 0.2 1:40.02 httpd 28621 apache 15 0 97.9m 54m 3420 S 17 0.2 0:25.61 httpd 28641 apache 16 0 97.9m 54m 3428 R 17 0.2 0:21.52 httpd 28642 apache 15 0 99756 53m 3424 R 15 0.2 0:21.46 httpd 28643 apache 15 0 99676 53m 3424 S 15 0.2 0:21.59 httpd 28594 apache 15 0 99756 53m 3428 R 13 0.2 0:44.41 httpd 28618 apache 15 0 99676 53m 3420 S 13 0.2 0:26.15 httpd 28654 apache 15 0 99676 53m 3472 S 13 0.2 0:04.27 httpd 28575 apache 15 0 99756 53m 3436 R 11 0.2 1:14.02 httpd 28576 apache 15 0 99676 53m 3496 S 11 0.2 1:16.79 httpd 28634 apache 15 0 99676 53m 3436 S 11 0.2 0:25.36 httpd 28653 apache 15 0 99676 53m 3424 S 11 0.2 0:04.35 httpd 28574 apache 15 0 99676 53m 3440 S 10 0.2 1:13.05 httpd 28592 apache 15 0 99676 53m 3492 R 10 0.2 0:45.78 httpd 28595 apache 15 0 99676 53m 3432 R 10 0.2 0:47.02 httpd 28617 apache 16 0 99676 53m 3436 S 10 0.2 0:25.32 httpd 28620 apache 15 0 99676 53m 3432 S 10 0.2 0:25.35 httpd 28597 apache 15 0 99676 53m 3428 S 8 0.2 0:43.56 httpd 11345 mysql 15 0 2927m 198m 4472 R 4 0.6 1624:43 mysqld 1 root 15 0 2036 648 552 S 0 0.0 0:16.97 init 2 root RT 0 0 0 0 S 0 0.0 0:48.50 migration/0 3 root 34 19 0 0 0 S 0 0.0 0:26.72 ksoftirqd/0 4 root RT 0 0 0 0 S 0 0.0 0:00.00 watchdog/0 5 root RT 0 0 0 0 S 0 0.0 0:04.98 migration/1 6 root 34 19 0 0 0 R 0 0.0 0:27.51 ksoftirqd/1 7 root RT 0 0 0 0 S 0 0.0 0:00.00 watchdog/1 8 root RT 0 0 0 0 S 0 0.0 0:15.42 migration/2 9 root 34 19 0 0 0 S 0 0.0 0:26.50 ksoftirqd/2 10 root RT 0 0 0 0 S 0 0.0 0:00.00 watchdog/2

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  • Problems with LDAP auth in Apache, works only for one group

    - by tore-
    Hi, I'm currently publishing some subversions repos within Apache: <Location /dev/> DAV svn SVNPath /opt/svn/repos/dev/ AuthType Basic AuthName "Subversion repo authentication" AuthBasicProvider ldap AuthzLDAPAuthoritative On AuthLDAPBindDN "CN=readonlyaccount,OU=Objects,DC=invalid,DC=now" AuthLDAPBindPassword readonlyaccountspassword AuthLDAPURL "ldap://invalid.domain:389/OU=Objects,DC=invalid,DC=domain?sAMAccountName?sub?(objectClass=*)" Require ldap-group cn=dev,ou=SVN,DC=invalid,DC=domain </Location> This setup works great, but now we want to give an LDAP group read only access to our repo, then my apache config looks like this: <Location /dev/> DAV svn SVNPath /opt/svn/repos/dev/ AuthType Basic AuthName "Subversion repo authentication" AuthBasicProvider ldap AuthzLDAPAuthoritative On AuthLDAPBindDN "CN=readonlyaccount,OU=Objects,DC=invalid,DC=now" AuthLDAPBindPassword readonlyaccountspassword AuthLDAPURL "ldap://invalid.domain:389/OU=Objects,DC=invalid,DC=domain?sAMAccountName?sub?(objectClass=*)" <Limit OPTIONS PROPFIND GET REPORT> Require ldap-group cn=dev-ro,ou=SVN,dc=invalid,dc=domain </Limit> <LimitExcept OPTIONS PROPFIND GET REPORT> Require ldap-group cn=dev-rw,ou=SVN,dc=invalid,dc=domain </LimitExcept> </Location> All of my user accounts is under: OU=Objects,DC=invalid,DC=domain All groups related to subversion is under: ou=SVN,dc=invalid,dc=domain The problem after modification, only users in the dev-ro LDAP group is able to authenticate. I know that authentication with LDAP works, since my apache logs show my usernames: 10.1.1.126 - tore [...] "GET /dev/ HTTP/1.1" 200 339 "-" "Mozilla/5.0 (...)" 10.1.1.126 - - [...] "GET /dev/ HTTP/1.1" 401 501 "-" "Mozilla/4.0 (...)" 10.1.1.126 - readonly [...] "GET /dev/ HTTP/1.1" 401 501 "-" "Mozilla/4.0 (...) line = user in group dev-rw, 2. line is unauthenticated user, 3. line is unauthenticated user, authenticated as a user in group dev-ro So I think I've messed up my apache config. Advise?

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  • top does not run

    - by Horace Ho
    Sorry that I can't be very specific, only symtoms are provided: Monday morning a CentOS box, 1GB ram, Pentium 4 web server (thin, rails) does not response (too slow) to a browser of another PC ping it, ok ssh into it, ok a few minutes later, the web server is back to normal speed, serving web requests well ping it, ok ssh into it, ok however, top does not run what should I look at, about this 'top does not run' symptom? thx

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  • kernel: journal commit I/O error

    - by jasondewitt
    I am having some problems with a Dell 1950 server. I am installing RHEL 4.6 along with Oracle and some other software on here. I am randomly getting an error message saying "kernel: journal commit I/O error" on my ssh session and on the monitor I have hooked up to the server I see an error scrolling by that says "EXT3-fs error (device sda5) in start_transaction: Journal has aborted." It has happened several times but never at the same point during the install. Actually, this last time the system was up and running and I was just trying to import a database into oracle. This has happened on several hard drives, so I'm pretty sure that is not the problem. This makes me think the raid controller is going bad. What do you guys think? ** UPDATE ** Pretty sure it was a bad hard drive. I threw another drive in the server and it's been running for about 48 hours with out problems.

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  • Fedora Installation with software repository in DVD does not work

    - by Raks
    I bought a new assembled PC with processor as Core-i3(2120) and Intel H61 motherboard and was trying to install Fedora 16 from a DVD. This DVD contains all the packages so that installation does not require to download packages from internet. I have used this DVD to install Fedora 16 offline many a times though in machines with different hardware configuration. But in this new machine when the installation reaches the stage wherein it asks for Software repository selection I select CD/DVD but the system fails to read the media and throws up an error that it cannot detect the media. THe LED in the DVD writer also indicate that the DVD is not being read. Now there is neither a problem with the DVD or the DVD drive because the installation started from the DVD itself. So what could the problem be, anything in the BIOS that is causing the problem, Is there any way I could utilize the packages already existing in the CD so that I save downloading the packages from DVD

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  • How can I pass environment variables to a WSGI script, using uWSGI?

    - by orokusaki
    I've added the following line to /etc/environment: FOO_DEPLOYMENT_ENV="vbox" Upon logging in via SSH, I can echo $FOO_DEPLOYMENT_ENV and, of course, see vbox output to the shell. If I open a Python shell and run os.getenv('FOO_DEPLOYMENT_ENV'), it will return 'vbox', but the same code in my Python application, when run by uWSGI (as the www-data user), it does not see the environment variable. Clearly, this isn't a problem of uWSGI, and is rather a problem with my understanding of environment variables, or how they're properly set, and the contexts in which they can be retrieved. What am I doing or understanding incorrectly?

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  • How can I bind mount a directory with a space in it?

    - by chris
    I have a drive mounted at /media/ that contains a directory with a space in the name - let's call it "My Stuff". I would like to bind mount it to "My Stuff" in my home directory. I tried the following in fstab, but all attempts to mount resulted in a syntax error: /media/My\ Stuff /home/me/My\ Stuff none bind "/media/My\ Stuff" "/home/me/My\ Stuff" none bind "/media/My Stuff" "/home/me/My Stuff" none bind Is there a way to do this?

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  • Tweaks on nvidia-settings only working when the program is opened

    - by Igoru
    I have two monitors. The master one (17") is 1yo, and the secondary (15") is really old, like 4yo. This old screen is having problems displaying colors... They are a little bit darker, what is a problem when I'm viewing pics. I have a GeForce 9800, so I changed some settings inside nvidia-settings, that fit better with this second screen. But those settings just are applied when I first open nvidia-settings. First time I configured this, it worked. I turned off computer, next day turned it on, and screen is dark again. As soon as I open nvidia-settings again, the screens get lighter again! How can I make those settings permanent and loaded at startup?

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  • Secondary backup server

    - by verdy
    I've been given a task to implement a backup solution in the event of our website goes down. It is a dedicated server running centos 6. From what i've experience on our server, our server may go down because of PHP application crash or hardware failure. I have couple of questions: In the first case, is it possible to get the server restart the PHP automatically, how can I do that? Because in my mind, if it is only the application that goes down, probably I can still make use of the server itself. In the second case, can I redirect a request to a secondary server? How can I do that? What do I need other than another server? For now it is gonna be a simple server which shows the user a static landing page so later the system notify us via email that the primary server went down so that we can restart the server manually. Is it possible to setup just a vps or even a shared server for the secondary server ? As I think there is only gonna be a static page. Thanks. Any help would be much appreciated

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  • Moving MySQL directory on an Amazon EC2 machine

    - by Traveling Tech Guy
    I'm trying to have MySQL point to a directory on an EBS volume I mounted on my EC2 machine. I took th following steps: Stopped MySQL (/etc/init.d/mysqld stop) - successful Created a MySQL directory on my volume, mounted on /vol (mkdir /vol/mysql) Copied the contents of /var/lib/mysql to /vol/mysql (cp -R /var/lib/mysql /vol/mysql) Chanded the owner and group of that directory to match the original (chown -R mysql:mysql /vol/mysql) - after this step, the 2 directories are identical. Edited the /etc/my.cnf file (commented 2 original lines): [mysqld] #datadir=/var/lib/mysql #socket=/var/lib/mysql/mysql.sock datadir=/vol/mysql socket=/vol/mysql/mysql.sock` Started MySQL (/etc/init.d/mysqld start) - FAILED The error file /var/log/mysqld.log contains the following lines: 100205 20:52:54 mysqld started 100205 20:52:54 InnoDB: Started; log sequence number 0 43665 100205 20:52:54 [Note] /usr/libexec/mysqld: ready for connections. Version: '5.0.45' socket: '/vol/mysql/mysql.sock' port: 3306 Source distribution No other errors are available. What am I doing wrong? Where can I find the error/s encountered by MySql? If I restore the original lines, MySQL starts, leading me to believe it may be a permissions issue - but permissions are the same for both directories? Thanks!

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  • Increase text size in Ubuntu due to having large resolution/monitors

    - by Sridhar Ratnakumar
    I have 24" dual monitors with 1920x1080 resolution on both of them. Consequently the text appears so small. I use the following text-intensive applications frequently: Web browser (Google Chrome) IDE (Komodo) Terminal (Gnome Terminal) Email (Thunderbird) I can configure text size on IDE, Terminal and Email. But for Chrome, it is not a good idea to set proportional font size because often one wants to see the entire (not just proportional fonts) site to be zoomed. So I am asking: Is it possible to increase DPI in Ubuntu (much like on Windows) so as to increase the text size across all apps? OR Is it possible to set permanent 'zoom' in Google Chrome, using a third-party extension maybe?

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  • what does 999 means here

    - by Brij Raj Singh
    I did ll on one of my directories, what does 999 means here, drwxr-xr-x 9 git mysql 4096 Nov 12 14:41 gitlab/ drwxr-xr-x 6 gitlab_ci 999 4096 Jun 28 13:36 gitlabci/ could these directories be fully owned like gitlab is owned by git and gitlabci to be owned by gitlab_ci I want something like this drwxr-xr-x 9 git git 4096 Nov 12 14:41 gitlab/ drwxr-xr-x 6 gitlab_ci gitlab_ci 4096 Jun 28 13:36 gitlabci/

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  • All my files uploaded have unusable permissions

    - by cosmicbdog
    I've just moved to a new server and have come across some strange permissions issues. Every file I upload has permissions of 600, owned by the user account and is also in the same group. With this permission, the server is unable to make changes to these files. The folder I'm uploading to (via regular ftp) has permissions of 755. Why are any new files I upload here given this permission of 600? And how do I change it so that files added are given permissions so they can be modified by the webserver?

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  • How to prioritize openvpn traffic?

    - by aditsu
    I have an openvpn server, with one network interface. VPN traffic is extremely slow. I tried to do traffic control with this configuration (currently): qdisc del dev eth0 root qdisc add dev eth0 root handle 1: htb default 12 class add dev eth0 parent 1: classid 1:1 htb rate 900mbit #vpn class add dev eth0 parent 1:1 classid 1:10 htb rate 1500kbit ceil 3000kbit prio 1 #local net class add dev eth0 parent 1:1 classid 1:11 htb rate 10mbit ceil 900mbit prio 2 #other class add dev eth0 parent 1:1 classid 1:12 htb rate 500kbit ceil 1000kbit prio 2 filter add dev eth0 protocol ip parent 1:0 prio 1 u32 match ip sport 1194 0xffff flowid 1:10 filter add dev eth0 protocol ip parent 1:0 prio 2 u32 match ip dst 192.168.10.0/24 flowid 1:11 qdisc add dev eth0 parent 1:10 handle 10: sfq perturb 10 qdisc add dev eth0 parent 1:11 handle 11: sfq perturb 10 qdisc add dev eth0 parent 1:12 handle 12: sfq perturb 10 But it's still extremely slow. I have an imaps connection that keeps transferring data continuously (I successfully limited the rate) but with openvpn I can't seem to get more than about 100kbit/s The internet connection speed is about 3mbit/s (symmetric) What could be the problem? Does the sport filter work for udp?

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  • How to monitor traffic on certain ports with ntop

    - by Claudiu
    How to configure ntop so I can get the amount of upload traffic sent through a certain port ? I've added port in ntop/protocol.list, restarted ntop and after some time I've checked Summary - Traffic - TCP/UDP Traffic Port Distribution: Last Minute View, but data from that table is not too relevant. I think there is much more about this ntop that I don't know (configuration, usage).

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  • How to migrate a running KVM (with full disk copy) to another node?

    - by klipz
    I'm doing tests on KVM, and I'd like to see if I can make a hot migration, I mean the virtual machine won't stop running during the migration (but a few seconds of freeze is ok). I use a small cluster for my test : kvm1, kvm2, and kvmnfs. kvm1 and kvm2 runs the virtual machines kvmnfs is a NFS server, and it's mounted on /KVM on both kvm1 and kvm2 To migrate a VM (only RAM in fact) from kvm1 to kvm2, I run the same kvm command on kvm2 (with -incoming tcp:0:4444) that on kvm1, then I use "migrate -d tcp:kvm2:4444" : It works great, since the VM file is common to both machines. Now, I wan't to make a full migration (RAM + disk) of a local VM file (no more NFS) of kvm1 to kvm2. I tried to create an empty file, with touch, on kvm2 and use the same kvm command line + the "-incoming ..."). Then on kvm1 I use "migrate -d tcp:kvm2:4444" : It copies everything, then... the VM fails (any I/O disk gives an I/O error) ! And my VM file on kvm2, the one I created with touch, as still a size of 0 bytes. What am I doing wrong ? What is the exact command to use on kvm2 ? And what is the command to launch, in the monitoring mode, on kvm1 ?

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  • Sensitive data deletion (remote)

    - by José Antonio Silva
    Hi, I'm just finished my Amazon EC2 migration and I want to delete all the files (databases, source code) from the old servers. The problem is that the servers are in California and my business is in Chile, soo I only have ssh access to that servers. I'm planning to sell the servers and I'm wondering if there is a way to perform a low levele deletion remotely of the specific files and folders. Thanks in advance! José Antonio

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  • OpenVZ vs Xen, how much difference in performance?

    - by Aleksandr Levchuk
    There is a Xen vs. KVM in performance question on ServerFault. What will be the performance difference if the choice is between Xen and OpenVZ? How is it best to measure? Some may say "you're comparing apples and oranges" but I have to choose one of the two and it needs to be wise choice. Performance is most important to us. We may switching to Xen from OpenVZ because Xen is more ubiquitous but only if performance difference is not significant. In January 2011 I'm thinking of doing a head to head performance comparison - here is my project proposal to our Bioinformatics facility director.

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