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• mod_secdownload in lighttpd support subdirectories for secure stream?

  - by zomail

  i want to know that lighttpd supports secure stream for subdirectories ? I want to secure my subdirectories within a directory but looks like its not working on subdirectories . I want to secure my subdirectories within download-area directory given below secdownload.secret = "MySecretSecurePassword" secdownload.document-root = "/home/lighttpd/download-area/" secdownload.uri-prefix = "/dl/" secdownload.timeout = 3600

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• migration of physical server to a virtual solution, what i have to do?

  - by bibarse

  Hello I'm new in this forum, so i would like that you forgive me for my blissfully and my low English level. I'm a trainee in company one month ago, and my mission is to migrate 3 physicals servers to a virtualization technology. The company edit softwares for E-learning so there are lots of data like videos, flash and compressed (zip). This is some inventory of the servers: OS: Debian, 2 redhat, apache, php/mysql, sendMail/Dovecot, webmin with virtualmin template to create dynamically the web sites because there is no sysadmin ... The future provider will be responsible of to secure, update and create the virtual machines (outsourcing) and with a RedHat OS's. So i want that you help me to choose a virtualisation technologie (for the i prefer KVM of Redhat RHEV, VMWare is expensive), how evaluate the hardware needs (this for evolution of 4 or 5 years) and to elaborate a good planing to don't forget any think. Thank you for your responses.

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• Ubuntu server users question

  - by Camran

  I have read this article: https://help.ubuntu.com/9.04/serverguide/C/user-management.html But it doesn't go into depth with the privileges section. I need to know how to set privileges of me (as a user). I am the only user, but I want access to everything, but I don't want to manage my VPS logged in as root. So I am creating a username. Anybody have a list of privileges, what they mean and how to set them? Thanks

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• Thunderbird doesn't raise or give focus when you click "Write" or "Reply".

  - by Neil

  I'm using Thunderbird 2.0.22, the version that comes with Ubuntu Intrepid 8.10. When I hit "Reply" or "Write", a new email window pops up, but it ends up being under the main Thunderbird Window, and doesn't have focus. Thunderbird is the only application that exhibits this weird behaviour, and it just started happening one day, whereas it worked fine before. I've seen this problem years ago as well, and wasn't sure how I fixed it.

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• Performance Drop Lingers after Load [closed]

  - by Charles

  Possible Duplicate: How do you do Load Testing and Capacity Planning for Databases I'm noticing a drop in performance after subsequent load tests. Although our cpu and ram numbers look fine, performance seems to degrade over time as sustained load is applied to the system. If we allow more time between the load tests, the performance gets back to about 1,000 ms, but if you apply load every 3 minutes or so, it starts to degrade to a point where it takes 12,000 ms. None of the application servers are showing lingering apache processes and the number of database connections cools down to about 3 (from a sustained 20). Is there anything else I should be looking out for here?

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• How Do I Find The Hardware Block Read Size for My Hard Drive?

  - by Flame

  I'm trying to figure out the optimal size for a large copy from my hard drive using dd. I'm trying to figure out what the best blocksize to use it, which I would assume is the hardware block size for that drive.

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• Display the last few lines of a very large file

  - by gAMBOOKa

  I've got a log file that's managed to bloat upto 150MB. Is there a way to read only the last say 100 lines of the file instead of the whole thing? I don't want to have to download a 150 MB file with my current connection. I'd rather SSH in and read the relevant parts.

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• redirect output from dd command

  - by laks

  How to redirect output from dd command to /dev/null ?

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• How do I upgrade to PHP 5.4 in CentOS 6.3 with yum?

  - by Vicary

  I found some blog posts about this, but it's rather lack of descriptions on possible side effects. I could really use some detailed on these steps: How to add a repo that provides PHP 5.4 into yum Can this seamlessly replaces the current PHP version in CentOS? How can I switch back to the official repo when it supports PHP 5.4? (current 5.3.3 in my system) Will there be any potential to break PHP modules I currently using?

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• DHCP server can't see other machines

  - by William

  Hi, I setup a private network from virtual machines and one of the machines is the DHCP server for the group. I want to specify a next-server for the DHCP server but I'm having trouble connecting to any of the machines that I lease IPs to. I'm just trying to do a simple ping/ssh to 10.0.0.252 (a machine with a lease) but it doesn't seem to respond. Any advice? I'm assuming I need to be able to connect to my next-server but maybe I'm wrong. Thanks.

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• Vmware Workstation 10 connect remote server (Debian, Guest-Windows XP) Does not allow raw disk access nor shared folders

  - by Alex

  The setup: Ubuntu with local Vmware Workstation 10 (everything works locally) Connects(File- Connect to Server) Debian server with the same Vmware Workstation 10 (Windows XP Guest) Debian setup does not allow raw disk access nor shared folders (most options does not exist) No shared folder No physical disk option I use root user for this machine. Default install. I've tried to add shared folder from command line - it does not work. How to enable shared folders or raw disk access? I have created new Windows 8 64 bit template from scratch - I cannot use physical HDD either, and no SharedFolder option. I think this is something about security policy of remote server.

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• List installed packages with the repo they came from?

  - by Sandra

  With rpm it is possible to list installed packages with additional info rpm -qa --queryformat "%-35{NAME} %-35{DISTRIBUTION} %{VERSION}-%{RELEASE}\n" | sort -k 1,2 -t " " -i which will produce something like xorg-x11-drv-ur98 (none) 1.1.0-1.1 xorg-x11-drv-vesa CentOS-5 1.3.0-8.3.el5 xorg-x11-drv-vga (none) 4.1.0-2.1 xorg-x11-drv-via (none) 0.2.1-9 On Ubnutu server would I like to list all installed packages and show from which repository in came from. Can that be done?

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• sticky bit on NFS file system

  - by Kris_R

  I have a system where to the main server (homes, nfs, ntp, queue...) can log-in only root – all the other users use front-end host with NFS-mounted home directories (RW) and all other software directories (read-only). My problem is, that time to time, if root or normal user with sudo makes some administrative works on front-end some homes of normal users getting sticky bits (drwsr-sr-x). If it happens usually the user can't log-in (as long as permission for his home are not changed to drwxr-xr-x). The last time I saw it after compiling some new software (normal user configure;make) and installation from the same directory as root (su and make install or direct as normal user sudo make install). Can somebody explain me why it happens and what should I do to get rid of this problem? p.s. I'm using CentOS 5.7

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• Automount vfat (w95 fat32 LBA) on Centos

  - by cpl

  I'm trying to mount an USB flash drive formatted as w95 fat32 LBA (as reported by dmesg) under Centos. I can easily mount it using the mount command: mount /dev/sdx1 /media/mydrive -t vfat But it seems that the system (Centos 6.3) cannot mount it automatically. It mounts all the other filesystem types automatically. I also installed fuse-ntfs and it correctly mounts NTFS drives. How can I enable automount for vfat partiotions too? Thanks

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• Debian - Problems Unmounting External Hard Drives

  - by user331981

  I recently installed Debian Testing on a new laptop and I just noticed that I am having some issues with unmounting external hard drives. I am using Mate Desktop 1.8.1. With the 1st drive, if I right click on the drive and select “safely remove”: The drive unmounts, spins down, immediately spins back up an remounts. Unable to unmount. With the 2nd drive, if I right click on the drive and select “safely remove”: The drive unmounts but does not spin down. With the 3rd drive, if I right click on the drive and select “safely remove”: The drive unmounts but does not spin down, immediately spins back up but does not remount, and after 20 seconds, it spins down and stays that way. Behavior is the same on both USB 2.0 and USB 3.0 ports. On my last laptop, on which I also used Debian Testing + Mate desktop, the safe removal of drives worked out of the box and I never had an issue with it. The drives would unmount, spin down and stay that way. To remount the drive, one needed to unplug the device and plug it back in. I am unsure how to troubleshoot this issue and I am not sure if it is merely a matter of installing a “missing” package of editing a config file. Thank you in advance.

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• What's the most compact way to store a password-protected RSA key?

  - by Tim

  I've tried converting a PEM-encoded key to DER format, and it appears the password is stripped regardless of the -passout argument. Example: openssl rsa -in tmp.pem -outform DER -out tmp.der -passin pass:foo -passout pass:bar -des3 The resulting key appears no longer password-protected, so I am assuming that DER format does not support a password - is that correct? What alternative way is there to store this in a compact, binary form, and keep the password-protection?

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• What is the easiest way to make a backup of an entire hard disk

  - by Solignis

  Hi there, I got myself a dell laptop from the local computer store. Its a used machine with Windows Vista Home Basic on it. I want to load Ubuntu Desktop 10.10 though so I can do perl development. BUT I want to keep a copy of the entire harddrive with the dell utility partition and Windows Vista in case I want to go back. I was thinking I could image the drive but I not sure what to use, I don't have Ghost or anything, Someone had told me about Clonezilla. Would that work for me? Is it hard to use? Also I want to burn the data to a DVD or something more storable than a harddisk.

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• What is the easiest way to make a backup of an entire hard disk

  - by Solignis

  Hi there, I got myself a dell laptop from the local computer store. Its a used machine with Windows Vista Home Basic on it. I want to load Ubuntu Desktop 10.10 though so I can do perl development. BUT I want to keep a copy of the entire harddrive with the dell utility partition and Windows Vista in case I want to go back. I was thinking I could image the drive but I not sure what to use, I don't have Ghost or anything, Someone had told me about Clonezilla. Would that work for me? Is it hard to use? Also I want to burn the data to a DVD or something more storable than a harddisk.

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• How can I use '{}' to redirect the output of a command run through find's -exec option?

  - by pkaeding

  I am trying to automate an svnadmin dump command for a backup script, and I want to do something like this: find /var/svn/* \( ! -name dir -prune \) -type d -exec svnadmin dump {} > {}.svn \; This seems to work, in that it looks through each svn repository in /var/svn, and runs svnadmin dump on it. However, the second {} in the exec command doesn't get substituted for the name of the directory being processed. It basically just results a single file named {}.svn. I suspect that this is because the shell interprets > to end the find command, and it tries redirecting stdout from that command to the file named {}.svn. Any ideas?

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• putty 0.61 : why do I see "Access Denied" message after I enter my login id?

  - by anjanbacchu

  I use putty to login to my RHEL 5.3 server. I'm prompted to enter my login as "login as " and I enter my login Id. as soon as I press ENTER, I see a "Access Denied" message following which I'm prompted with password. I successfully enter password and I'm through -- no problems. I tried the same with putty 0.60(as opposed to above putty 0.61) but in this version, I don't get any "access denied" error. What should I make of this ? Is putty 0.61 version buggy ? P.S : If I login using ssh.exe(from cygwin), then I'm fine -- I don't get any "access denied" errors. Thank you,

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• Transparent, unicode X terminal not tied to a Desktop Environment?

  - by jamuraa

  I've been looking for this for a while now and I just haven't been able to find one. The last few that I used were: aterm - this one was fast and had good transparency support, but it doesn't support Unicode at all as far as I can tell. The dependency graph is also reasonable. gnome-terminal - was good, and had good transparency support plus unicode, but it pulls in about everything in gnome, and I don't use anything else in gnome. It was also somewhat slow (noticable lag in updating at times) and wouldn't use fonts that I wanted. Eterm - same thing as aterm, good dependencies and transparency but no unicode. Does anyone have suggestions, or will I be stuck with gnome-terminal's dependencies and slowness?

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• Is there anyway that I can set the 'real' memory usage value while running my java code?

  - by vira

  I'm running a code on a server to generate a 10,000x10,000 matrix and save each value into a table (MySQL). I was informed by the administrator that I can use up to 32g of the physical memory of our server but have no idea how to do it. I googling around and so far only found information about setting the virtual memory using -Xmx. I tried it anyway and using top command I got this: PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 3981 gv 35 15 32.4g 304m 10m S 1 0.5 9:54.84 java So, it shows that the -Xmx set the VIRT and not the RES value. Is there anyway that I can set the RES value into 32g?

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• How do I reduce RAM usage on my server?

  - by Abs

  I have recently launched a site that is very popular but I am having trouble with scalability. My site makes heavy use of FFmpeg and at peak times RAM usage hits the 2 GB point quickly and the swap file starts getting used. CPU usage starts rising too. Users complain that the site is slow. They say this because all FFmpeg instances run very slow because of the number running at the same time. Users make use of FFmpeg on my server in real time. Is there anything I can consider or do to ease down the usage of the server and RAM just shooting up? Maybe there is something better than FFmpeg (!). Is the only solution "throwing some cash" at a more powerful server? I have given little information, please ask for more, so this problem can be solved.

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• ruby on rails server is intermittently slow

  - by Richard

  My rails installation was chugging along nicely. Last night we had to perform a hot-patch with was really a standard deploy of some exception code. Once capistrano finished the operation one of our admins discovered that there were two long running passenger processes. While we have deployed release over the past two weeks it would appear that these processes have been here and alive the whole time. Granted they could have been zombies or any other artifact and at this point we do not know what state they were in. Which leads me to the question: There are so many moving parts between the rails application and the OS/hardware that being a SME is probably no longer possible. So; how does a sysadmin perform root-cause analysis with any certainty? And: When do I just start rebooting servers?

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• Apache logs other user read permissions

  - by user2344668

  We have several developers who maintain the system and I want them to easily read the log files in /var/log/httpd without needing root access. I set the read permission for 'other' users but when I run tail on the log files I get permission denied: [root@ourserver httpd]# chmod -R go+r /var/log/httpd [root@ourserver httpd]# ls -la drwxr--r-- 13 root root 4096 Oct 25 03:31 . drwxr-xr-x. 6 root root 4096 Oct 20 03:24 .. drwxr-xr-x 2 root root 4096 Oct 20 03:24 oursite.com drwxr-xr-x 2 root root 4096 Oct 20 03:24 oursite2.com -rw-r--r-- 1 root root 0 May 7 03:46 access_log -rw-r--r-- 1 root root 3446 Oct 24 22:05 error_log [me@ourserver ~]$ tail -f /var/log/httpd/oursite.com/error.log tail: cannot open `/var/log/httpd/oursite/error.log' for reading: Permission denied Maybe I'm missing something on how permissions work but I'm not finding any easy answers on it.

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