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  • Most awesomely bad hack

    - by Zypher
    As I sit watching one of my latest dirty dirty hacks run, I started wondering what kind of dirty hacks you have created that are so bad they are awesome. We all have a few of them in our past - and they are probably still running in production somewhere, chugging along somehow still working. Which reminds me of the hack we had to put into place when we were moving data centers. Our IVRs had to keep running, as the data center we were moving from was the primary DC, and the new Primary wasn't quite ready to take traffic. So what do we do. Well we answer the calls in DC1, then ship the sip stream over the internet to DC2 1900 miles away ... that just felt oh so wrong. So the question is, what is one (or more) of your awesomely bad hacks?

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  • Tips and tricks to make NX server more stable

    - by gareth_bowles
    My shop has been using the FreeNX server on Fedora 11 for a while now and mostly getting good results, especially with performance, but we have some annoying problems with client connections. There are two main issues: Client sessions sometimes freeze after a long time (seems to be at least 2 hours of having the session active) We often have to make multiple attempts to start a new client session, especially if a previous session was suspended rather than terminated. In qwuite a few cases, we've had to restart the NX server to get around this. Our NX server configuration is the default except that we've enabled logging level 7 to /var/log/nxserver.log, and set the font server to "unix:/7100" so that it uses xfs. Does anyone have any ideas for making things more stable ?

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  • Why are my files in /var/lock and where did they just go?!

    - by Nicky Hajal
    I am hosting a website on Debian 5.0 & Apache2. Today one of my websites was down, Apache said it couldn't find the directory. I located the files and the whole site once in /var/www/site was now /var/lock/site. All the files were present. I was confused, but figured I'd just move it back. mv /var/lock/site /var/www All looked fine... Except that only the directories moved and the files appear to be lost! I am working on restoring from backups but I would really love to know what happened and where my files went (the backups are a few days old). Thanks for your help!

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  • How to Enable an External USB Hard Drive with Ubuntu

    - by LarsOn
    I'm trying to install a new LaCie Hard Disk design by Neil Poulton 1TB USB 2.0. GParted reports /dev/sda1 (with exclamation mark and key sign) ntfs 1 KiB unallocated 320 MiB /dev/sda2 hfs+ 2.84 MiB unallocated 931.2 GiB When trying to create a partition with Disk Utility it says Daemon is inhibited It seems I can't create the partition that way. Can you recommend how I can proceed? Thank you

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  • why my server has a dir named "?"

    - by liuxingruo
    These are all the dirs in my server: ? bin boot dev etc home lib lost+found media media2 misc mnt net opt proc root sbin selinux srv sys tmp usr var why there is a "?" dir? Thanks very much. BTW: the touch command was found on my server(wiered). I list the bin dir: alsacard cp dd env hostname loadkeys more ps sed tcptraceroute alsaunmute cpio df ex igawk loadkeys.static mount pwd setfont traceroute6 arch csh dmesg false ipcalc logger mountpoint raw setserial tracert awk cut dnsdomainname fgrep kbd_mode login mv red sh view basename date doexec gawk keyctl ls netstat redhat_lsb_init sleep ypdomainname bash dbus-cleanup-sockets domainname gettext kill mail nice rm sort cat dbus-daemon dumpkeys grep ksh mailx nisdomainname rmdir stty chgrp dbus-monitor echo gtar ksh93 mkdir pgawk rpm su chmod dbus-send ed gunzip link mknod ping rvi sync chown dbus-uuidgen egrep gzip ln mktemp ping6 rview tar touch is missing, how can i get it back?

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  • How to report a bug against Ubuntu's upgrade process?

    - by Kim
    I just upgraded to lucid and discovered a nasty bug. It prevents the system from booting and took me hours to resolve. Now I'd like to report it along with the workaround I found. The only problem is: Where? Other such bugs have been filed against "update-manager", but that's just the GUI calling some scripts which do the real work. so what do I do? What should I substitute for XYZ in ubuntu-bug XYZ ?

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  • Where is the encfs volume key stored?

    - by Waldorf
    I am trying to use encfs in reverse mode. I understand that the passphase is used to encrypt a key which is then stored encrypted into the encfs6.xml file. What I do not understand is the following. Create en encrypted virtual fs of a folder by using passphrase A unmount this folder. Delete all contents including the encfs6.xml file If you then try to do the same with another passphrse I would expect that a new encfs6.xml would be created. However I get the following error message: "Error decoding volume key, password incorrect" So I wonder, what volume key is incorrect, I thought it was in the encfs6.xml file ?

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  • What does this RPC error message mean?

    - by user161834
    I have OS RHNL release 6.2 and use the NFS service (nfs-utils-1.2.3) to connect to NFS server, And found a lot of messages in a file /var/log/messages: Apr 1 11:08:35 XXX rpc.idmapd[3010]: nss_getpwnam: name '2' does not map into domain 'XXXX.com' Apr 1 11:14:26 XXX rpc.idmapd[3010]: nss_getpwnam: name '0' does not map into domain 'XXXX.com' Apr 1 11:18:36 XXX rpc.idmapd[3010]: nss_getpwnam: name '2' does not map into domain 'XXXX.com' Apr 1 11:24:27 XXX rpc.idmapd[3010]: nss_getpwnam: name '0' does not map into domain 'XXXX.com' Apr 1 11:28:37 XXX rpc.idmapd[3010]: nss_getpwnam: name '2' does not map into domain 'XXXX.com' Apr 1 11:34:27 XXX rpc.idmapd[3010]: nss_getpwnam: name '0' does not map into domain 'XXXX.com' Apr 1 11:38:37 XXX rpc.idmapd[3010]: nss_getpwnam: name '2' does not map into domain 'XXXX.com' Apr 1 11:44:28 XXX rpc.idmapd[3010]: nss_getpwnam: name '0' does not map into domain 'XXXX.com' Apr 1 11:48:37 XXX rpc.idmapd[3010]: nss_getpwnam: name '2' does not map into domain 'XXXX.com' What does this message mean ?

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  • Intel cpu hyperthreading on or off for ibm db2?

    - by rtorti19
    Has anyone ever done any database performance comparisons with hyper-threading enabled vs disabled? We are running ibm db2 and I'm curious if anyone has an recommendations for enabling hyper-threading or not. With hyper-threading enabled it makes it quite difficult to do capacity planning for cpu usage. For example. "With 8 physical cores represented as 16 "threads" on the OS and a cpu-bound workload, does that mean when your cpu usage hit's 50% you are actually running at 100%." What real benefits do I gain with leaving hyper-threading enabled on an intel server running DB2? Does hyper-threading help if you're workload is truly disk IO bound? If so, up to what percentage? These are the types of questions I'm trying to answer. Any thoughts?

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  • Http to https behavior for visits from Internet Explorer client

    - by Emile
    My website has an SSL cert (example url: https://subdomain.example.com). Under Apache it's set up for both port 80 and port 443. So under the following configuration, anyone who goes to http://subdomain.example.com is sent to https://subdomain.example.com . But for visits from Internet Explorer, the redirect doesn't happen. Instead, http visits get a "Internet Explorer cannot display the web page." with a list of client-side solutions to try. Any ideas on how to fix the config so IE visits have the same behavior as the other browsers (that is, send http to https automatically)? NameVirtualHost *:443 <VirtualHost *:80> DocumentRoot /var/www/somewebroot ServerName subdomain.example.com </VirtualHost> <VirtualHost *:443> DocumentRoot /var/www/somewebroot ServerName subdomain.example.com # SSL CERTS HERE </VirtualHost> *Tested IE8, IE9 beta

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  • Clonezilla-SE with another DHCP Server in LAN

    - by aleroot
    I want to install Clonezilla-Server(192.168.1.100) in a network that already have a DHCP Server (dd-wrt with dnsmasq - 192.168.1.1). I've installed Clonezilla-SE on ubuntu Server 10.10, once installed and configured Clonezilla Server i've removed the DHCP-Server and set pxe server address in dnsmasq configuration on DHCP Server : dhcp-boot=pxelinux.0,,192.168.1.100 When i try to start from PXE a Computer in the network clonezilla start, but give me an error that the ipddress of the machine is not given by the clonezilla server and can't continue ... Someone has already tried to configure Clonezilla-SE in a similar enviroment? Is there some configuration on DRBL server of Clonezilla that i need to do ?

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  • Erros installing archlinux on macbook air

    - by user1021852
    I have "installed" Archboot on my macbook air, and I am getting screen problems after it loads UDEV, it is last thing I can read. Basically I am following this instructions. But then I got error that when installing grub legacy. Something about that it has no support of gpt. And I cannot find anything about bios-compatibility. P.S. it only took one try too install it on macbook 6,2 and few dozens in macbook air without results.

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  • How to view bad blocks on mounted ext3 filesystem?

    - by Basilevs
    I've ran fsck -c on the (unmounted) partition in question a while ago. The process was unattended and results were not stored anywhere (except badblock inode). Now I'd like to get badblock information to know if there are any problems with the harddrive. Unfortunately, partition is used in the production system and can't be unmounted. I see two ways to get what I want: Run badblocks in read-only mode. This will probably take a lot of time and cause unnecessary bruden on the system. Somehow extract information about badblocks from the filesystem iteself. How can I view known badblocks registered in mounted filesystem?

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  • How to prevent unison syncronize file when file process uploading

    - by user134600
    I use CentOS 5.8 Final. My situation is I running unison with cron where script below : */1 * * * * /usr/bin/unison /dev/null 2&1 and default profile like below : root = /var/www root = ssh://web02.example.com//var/www auto=true batch=true confirmbigdel=true fastcheck=true group=true owner=true prefer=newer silent=true times=true So in every minutes will syncronized www folder . My problem are : I upload file with size bigger than 10 MB to www from client with user1 permission where www folder is user1 owner. file in processing uploading then unison running in that minute and suddenly file upload owner changed to root:root When I editing file in www folder then I save when unison running, file owner changed to root:root where should be user1:user1 Is there anyone know about this problem?

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  • Ubuntu Server UFW NAT Issues

    - by William Fleming
    *nat :POSTROUTING ACCEPT [0:0] -A POSTROUTING -s 10.8.0.0/24 -o eth0 -j MASQUERADE -A ufw-before-input -i tun0 -j ACCEPT -A ufw-before-output -i tun0 -j ACCEPT -A ufw-before-forward -s 10.8.0.0/24 -j ACCEPT -A ufw-before-forward -d 10.8.0.0/24 -j ACCEPT This input into my before.rules file stops me being able to ping the outside world. Before its fine i can ping google.co.uk after cant get out. Is there something wrong in my syntax here or what is the issue...? Im just trying to NAT my VPN so i can get internet access. Any thoughts would be greatly appreciated. Thanks William

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  • Run a script with Apache2 in a certain directory

    - by TheGatorade
    I am trying to run WebMCP on an Apache2 server. It's got 2 executable files, which I have in /opt/webmcp/cgi-bin/webmcp.lua and /opt/webmcp/cgi-bin/webmcp-wrapper.lua If I run the wrapper from a position that is not /opt/webmcp/cgi-bin it says it cannot find webmcp.lua and gives a 500 error. If I run it from the correct directory it works. My server has webmcp.lua set as directoryindex and it's giving 500 error. It may be because of this problem? /opt/webmcp/cgi-bin/ is already set as documentroot, and is accessible by www-data.

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  • How does Kerberos work with SSH?

    - by Phil
    Suppose I have four computers, Laptop, Server1, Server2, Kerberos server: I log in using PuTTY or SSH from L to S1, giving my username / password From S1 I then SSH to S2. No password is needed as Kerberos authenticates me Describe all the important SSH and KRB5 protocol exchanges: "L sends username to S1", "K sends ... to S1" etc. (This question is intended to be community-edited; please improve it for the non-expert reader.)

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  • Simple one-way synchronisation of user password list between servers

    - by Renaud Bompuis
    Using a RedHat-derivative distro (CentOS), I'd like to keep the list of regular users (UID over 500), and group (and shadow files) pushed to a backup server. The sync is only one-way, from the main server to the backup server. I don't really want to have to deal with LDAP or NIS. All I need is a simple script that can be run nightly to keep the backup server updated. The main server can SSH into the backup system. Any suggestion? Edit: Thanks for the suggestions so far but I think I didn't make myself clear enough. I'm only looking at synchronising normal users whose UID is on or above 500. System/service users (with UID below 500) may be different on both system. So you can't just sync the whole files I'm afraid.

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  • Get an object by its objectGUID using ldapsearch

    - by orsogufo
    If I have the objectGUID attribute as returned by the ldapsearch command, how can I search the whole directory for an object with that objectGUID? For example, if I search a user getting its objectGUID, I get the following: ldapsearch -x -D $MyDn -W -h $Host -b "dc=x,dc=y" "(mail=something)" objectGUID # 7f435ae312a0d8197605, p, Externals, x.y dn: CN=7f435ae312a0d8197605,OU=p,DC=x,DC=y objectGUID:: b+bSezFkKkWDmbIZiyE5rg== Starting from the value b+bSezFkKkWDmbIZiyE5rg==, how can I create a query string to get that object?

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  • Migrate data from one server to another using rsync

    - by Leonid Shevtsov
    I'm moving from one VPS to another, and I figured that the simplest way to transfer data would be rsync. However, the data is owned by a user, www-data, which doesn't have ssh privileges, and I'd like it to be owned by the same (named) user on the target machine. Obviously I need all file permissions preserved. I have SSH access via another user with sudo privileges on both machines. Is this possible to do this with rsync?

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  • Setting up NFS server on Gentoo

    - by StackedCrooked
    I'm trying to set up an NFS server on a Gentoo VM. I've installed nfs-utils-1.2.2 and added the following line to the /etc/exports file: /root/svn 10.0.0.0/255.0.0.0(rw,sync,no_subtree_check) However, when I try to start the nfs service I get the following errors: gentoo-amd64-francis orig # /etc/init.d/nfs start FATAL: Could not load /lib/modules/2.6.24-9-pve/modules.dep: No such file or directory * Exporting NFS directories ... [ ok ] * Starting NFS mountd ... [ !! ] * Starting NFS daemon ... [ !! ] * Starting NFS smnotify ... [ ok ] It complains about not finding the /lib/modules/2.6.24-9-pve/modules.dep file, but the /lib/modules directory doesn't even exist on this machine. Can anyone help me getting it to work?

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  • iptables not writing rules.

    - by Darkmage
    im running these two rules as root, but when doing a iptables -L it dosent show any rules, any one have an idea of what the problem can be? iptables -A PREROUTING -t nat -i eth0 -p tcp --dport 80 --source 84.244.145.135 -j REDIRECT --to-port 1222 iptables -A PREROUTING -t nat -i eth0 -p tcp --dport 80 --source 243.134.97.194 -j REDIRECT --to-port 1222 duno@Virtual-Box:/home/glennwiz# iptables -L Chain INPUT (policy ACCEPT) target prot opt source destination Chain FORWARD (policy ACCEPT) target prot opt source destination Chain OUTPUT (policy ACCEPT) target prot opt source destination

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