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• NFSv4 - ACLs not working

  - by alex

  I've setup an NFSv4 server (Debian) and client (Ubuntu/Mythbuntu). It seems that uid username mapping is working nicely out-of-the-box (I get correct usernames on ls -l if the usernames match between the two boxes, even if the uids don't), but ACLs are not working. I've installed nfs4-acl-tools and I can read the ACLs correctly on the client, but they don't get applied. What needs to be done for ACLs to work? To clarify; username mapping works for regular permissions. ACLs are applied using uid/gid (I can even set ACLs by uid and they work).

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• Removing DS_Store files and variants?

  - by Ron Gejman

  I am running an Ubuntu 10.04.1 LTS server. Frequently I open up files using AFP from my Mac. Inevitably this created .DS_Store files on the server (although for some reason they are named :2eDS_Store. However, it also creates variants on DS_Store files. These variants are often named similarly to other files in that directory. E.g.: ~$ ls total 60K -rw-r--r-- 1 tarakhovsky 16K 2010-11-30 18:28 :2eDS_Store drwx--S--- 4 tarakhovsky 4.0K 2010-11-08 13:58 :2eTemporaryItems/ lrwxrwxrwx 1 tarakhovsky 15 2010-10-19 17:44 bigdisk -> /media/bigdisk// ... drwxr-xr-x 3 tarakhovsky 4.0K 2010-11-03 18:24 Temporary Items/ drwxr-xr-x 3 tarakhovsky 4.0K 2010-11-30 01:34 tmp/ ... I've disabled creation of DS_Store files using: defaults write com.apple.desktopservices DSDontWriteNetworkStores true so hopefully this won't continue to occur—but I really want to get rid of all of the existing variants of DS_Store files already on the server. Any ideas as to why these variants are being created and how I can get rid of them all?

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• Increasing a Linux partition once VM size increased in vSphere?

  - by dannymcc

  I have a Ubuntu 12.04 VM running on VMWares ESXi 5.1. The server (VM) itself has run out of space, the results of df -h are as follows: Filesystem Size Used Avail Use% Mounted on /dev/sda1 19G 17G 1.2G 94% / udev 490M 4.0K 490M 1% /dev tmpfs 200M 232K 199M 1% /run none 5.0M 0 5.0M 0% /run/lock none 498M 0 498M 0% /run/shm The original VM HDD size was just under 19GB which is I have now increased to 100GB within the vCenter GUI: Is there a simple way of doing this? The VM doesn't seem to acknowledge the increase at all.

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• How to add exception for backup MX to tumgreyspf?

  - by Waleed Hamra

  I have an Ubuntu raring server running postfix/dovecot as an email server, with tumgreyspf doing greylisting and SPF checks. My problem is that I also have a backup MX server, that is supposed to store my emails temporarily, should my main server ever fails. It usually rejects receiving emails if it finds the main server online and functional. The problem is when it does need to do its job, tumgreyspf rejects all emails from the backup MX with an error like this: Jun 27 16:18:13 hamra postfix/smtpd[28732]: NOQUEUE: reject: RCPT from mxbackup.mydomain.com[x.x.x.x]: 550 5.7.1 <[email protected]>: Recipient address rejected: QUEUE_ID="" SPF Reports: 'SPF fail - not authorized'; from=<[email protected]> to=<[email protected]> proto=SMTP helo=<mxbackup.mydomain.com> any ideas?

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• Chef bootstrap giving 401 unauthorized

  - by loddy1234

  I'm trying to bootstrap a new chef node by running: knife bootstrap <server ip> -x lewis -N gitlab --sudo But I get the following output: [Mon, 03 Sep 2012 14:45:17 +0000] INFO: *** Chef 10.12.0 *** [Mon, 03 Sep 2012 14:45:17 +0000] INFO: Client key /etc/chef/client.pem is not present - registering [Mon, 03 Sep 2012 14:45:17 +0000] INFO: HTTP Request Returned 401 Unauthorized: Failed to authenticate. Ensure that your client key is valid. [Mon, 03 Sep 2012 14:45:17 +0000] FATAL: Stacktrace dumped to /var/chef/cache/chef-stacktrace.out [Mon, 03 Sep 2012 14:45:17 +0000] FATAL: Net::HTTPServerException: 401 "Unauthorized" My chef server is running Ubuntu 12.04 x32 and the machine I'm trying to bootstrap is running CentOS 6.3 x64 Any idea what's going wrong?

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• Connecting to a VirtualBox machine from the host, using an ip address

  - by Doron

  Hello, In a macbook host, I run VirtualBox having a guest ubuntu server, with a NAT network setting. In the virtual machine application "Parallels", I would get on the host an IP address of the guest, to which I could later set hostnames and access it directly. However, I couldn't find a way to accomplish this using VirtualBox. The only solution VirtualBox has for me, is to set port forwarding, and access "localhost" with these ports. How can I have the desired behavior set up, without having to change to a bridged network settings, and expose my guest computer to the network my host computer is connected to ? Thanks.

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• Emacs doesn't load gui.

  - by D Connors

  Hi, whenever I run emacs or emacs23 on terminal I just get the following output: ** (emacs:2620): CRITICAL **: menu_proxy_module_load: assertion `dbusproxy != NULL' failed And the gui doesn't load, and emacs' window never opens. The emacs process doesn't actually crash (the terminal stays busy, and I can see the emacs23 process running with ps -e). I've tried running it with the -D --debug-init arguments, but the same thing happens and the output is exactly the same. However, if I run emacs -nw it successfully runs emacs in terminal mode as if nothing were wrong. Strangely, this problem only started happening the second time I ran emacs today. The first time it worked perfectly fine. Since then, I've tried rebooting and I've tried purging the emacs installation, to no success. I haven't installed any new packages today, but I might have upgraded some, could that be the reason? Is there a way to find out which packages were installed/upgraded today? Thanks I'm running Ubuntu Lucid

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• Easily tell if focused on VirtualBox window?

  - by Benjamin Oakes

  Is there a way to make it very obvious that my VirtualBox window isn't in focus? The problem I'm having is switching between workspaces on Ubuntu or OS X and then trying to type in my Windows virtual machine, only to find that it's not in focus. The Windows window looks like it's in focus (based on the title bar), but I'm actually typing in Firefox on the host machine, for example. It's even worse because the Windows text insertion cursor is blinking to show focus. Ideally, I'd like the VM's display to get unsaturated (e.g. a "partial" grayscale) when not in focus, just to prevent this keyboard-focus problem. Other options would be fine too, as long as I don't have to second guess where my focus is. I'm not using the seamless mode -- the display is all within a window.

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• Network access to VM only from host ...

  - by Jamie

  I'm trying to do some testing of Ubuntu 10.04 Beta 2 Server in a VMWare environment. The host is XP, and the VM software is VMPlayer. Problem is, I want to be able to see the VM from the network, not just from the host. I can SSH into the VM from the host, but from any other machine on the network I can't even get the VM to respond to a ping. Going the other way (from the VM out) isn't a problem at all. The VM software did an 'easy installer' so I'm not really sure what was going on with the networking. Suggestions?

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• Other users on my Server?

  - by Jennifer Weinberg

  I'm buying a Server from a person (that I don't know really well) and I want to make sure that the previous owner hasn't got any access anymore. It's an Ubuntu Virtual Server and I already received the admin access (via shell). How can I find out if there are still other accounts left, who are still able to access my server (e.g. with a still existing shell account, ftp or another type of user account)? And how can I delete them if these accounts exist? Best regards, Jennifer

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• No HTTP Response from Tomcat 7 EC2 instance

  - by David Kaczynski

  I am new to EC2 (and Tomcat, for that matter), and I am trying to deploy a vanilla Tomcat 7 server to an Ubuntu 12.04.1 EC2 instance and access the default test site over HTTP. My EC2 instance is running, and the Security Group includes port 80: My /etc/tomcat7/server.xml config has been edited to listen for HTTP requests on port 80: 0 I have restarted my Tomcat 7 server via sudo service tomcat7 restart. However, according to sudo netstat -lnp, Tomcat is not listed as listening over port 80: I am unable to get any response from going to the ...amazonaws.com public DNS in a web browser. What am I missing?

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• Monitor a log file on Linux and send each line to another program

  - by mlambie

  I run an apt-cacher-ng server on Ubuntu Linux which writes logs in the following format: 1299745593|O|149406|XXX.XXX.XXX.XXX|uburep/pool/main/t/tiff/libtiff4_3.9.2-2ubuntu0.4_amd64.deb 1299745593|O|10154976|XXX.XXX.XXX.XXX|uburep/pool/main/l/linux-firmware/linux-firmware_1.34.4_all.deb 1299748529|O|39368|XXX.XXX.XXX.XXX|uburep/pool/main/n/nagios-nrpe/nagios-nrpe-server_2.12-4ubuntu1_amd64.deb 1300155440|O|680100|XXX.XXX.XXX.XXX|uburep/pool/main/t/tzdata/tzdata_2011c-0ubuntu0.10.04_all.deb It shows the timestamp, direction (in or out), byte count, IP and filename. Every time a line is written to it, I'd like to also send that line to another program. I will have this program insert the line into a database so that I can crunch some statistics about how much bandwidth we're saving through operating a caching server. I do not want to cat the log file every X minutes (via cron) looking for new entries as it'd be somewhat computationally uneconomical. Instead I'd prefer to have a daemon monitor the log, and when a change is detected, each line is sent to my database-insertion script. Will swatch achieve this, or are there better options?

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• Gnome Terminal intercepts ctrl-F1

  - by frank

  Gnome Terminal does not pass on to applications the keypress ctrl-F1. It's an official bug: https://bugs.launchpad.net/ubuntu/+source/gnome-terminal/+bug/932940 The bug is marked Feb. 2012 but lives on in serendipity since 2009. The bug report is not even complete since shift-ctrl-F1 is also affected. However, I noticed that those two keys are the default keys for switch-to-workspace-1 and move-to-workspace-1. So I disabled them. Zero, zippo, zilch: Gnome Terminal would still swallow the keys. Next, I assigned to those two workspace functions totally different keys. The new keybindings did work, Gnome Terminal would still swallow ctrl-F1 and shift-ctrl-F1. Where are the default workspace keybindings stored? [Not in a xml-file.]

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• Very High Network out in ec2 instance

  - by Jatin

  I launched an ubuntu-14.04-64bit instance in Amazon EC2 two days back. And I started Tomcat 7.0.54 in that instance and deployed my application war files. It has no other software installed other than tomcat and the default ones. In the past 2 days, its shows 858 GB of Data Transfer(Network Out) from that instance. I have attached a graph of Amazon CloudWatch Metric "Network Out" My application does not do any data download/upload. Its a Java Spring application and the front end is in HTML&Javascript. My application traffic was very low (less than 20 hits) in those 2 days. Is there a way to find out why these data transfers happened and also to find what data has been transferred. If you can see in graph, network out was 20gb per minute. Some more info: Network in was negligible CPU Utilization was very high Everything else was low

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• What settings need to be changed to allow EC2 instances to use Amazon's Route 53 for DNS?

  - by ks78

  I have a number of Amazon EC2 instances, all running Ubuntu, which I'd like to configure to use Amazon's Route 53. I setup a script, following Shlomo Swidler's article, but ran into script-related issues, which were answered here. Now, I have the script working, but my instances are still not able to access Route 53's DNS. By this I mean, they are not able to resolve hostnames to IP addresses. My instances are currently configured with the DNS server IP address Amazon pushes out to them by default, does that need to be changed when using Route 53? I'm also IP-restricting my instances using the Security Groups. Could that be the problem? Is there a certain IP address or port I should open to allow communication with Route 53? It seems that DNS requests should be originating from my instances so the Security Groups shouldn't be an issue, but I've been wrong before. If anyone has any ideas, I'd really appreciate it.

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• Problems installing icinga-web

  - by Kungurov

  I'm using Ubuntu 10.04 LTS (64bit, Server), Apache 2.2.14 Following the instruction from the oficial icinga page http://docs.icinga.org/latest/en/index.html I installed the icinga-web-1.7.1 on my machine and configured a few hosts for test purposes. The Classic Interface runs as expected but the new Web Interface does not show any data. When I try: ps aux | grep ido2db | grep -v grep I get: icinga 27425 0.0 0.0 41464 600 ? Ss Jul27 0:00 /usr/local/icinga/bin/ido2db -c /usr/local/icinga/etc/ido2db.cfg which might indicate a problem with idomod/ido2db because according to the docs there should be at least 2 processes greped. Any ideas how to fix that?

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• How to create multiple OS on same DVD [duplicate]

  - by learner

  This question already has an answer here: How to make a multiboot CD that will start a user-chosen ISO file 7 answers I searched this forum but there are only general answers which doesn't give me desired output. Here is what I want to do. I have (1). Windows 7 ISO (2). Windows 8.1 previews ISO and (3). Ubuntu 12.10 ISO files. Using which I want to create single bootable DVD, so that after creating DVD it should ask to choose to install between 3 OS. Is it possible? If so please help me.

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• VirtualBox, physical disks, and snapshots

  - by noamtm

  I have an Ubuntu guest installed on a raw HDD (entire disk, not a partition). It runs just fine under WinXP. In addition, I was able to boot directly into it (using the BIOS boot-device selector). At some point, I have created a snapshot of the VM. I have made some changes since then. Today, after a long time, I tried booting into the "VM" disk. It worked, but all the data there is pre-snapshot (or, rather, frozen at the snapshot). Can I somehow merge the changes since I took the snapshot into the physical state?

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• mysql client fails to start on command line

  - by Mark Basmayor

  Hi, I have been using the mysql command line client a lot before but I suddenly start getting this error when I try to launch it. mysql: relocation error: mysql: symbol strmov_overlapp, version libmysqlclient_16 not defined in file libmysqlclient.so.16 with link time reference The only significant event that comes into my mind is updating from Ubuntu 9.10 to 10.4. I'm not sure if there's anything else that I did to mess it up. I tried uninstalling both the mysql server and mysql client like so but to no avail. sudo aptitude purge mysql-server-5.1 Any help will be much appreciated, thanks.

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• HALEVT troubleshooting: VFAT usb storage device gets mounted with root:root user:group

  - by Nova deViator

  Hi, i'm banging my head for number of days around this problem. using Halevt for automounting, everything mostly works, but the only thing is that Halevt mounts external USB storage devices as root. So, as user i cannot write to files on them. Halevt gets run as halevt user on boot through /etc/init.d script. This is Ubuntu Lucid with Awesome WM. No GDM. Running halevt as user seem to not work (halevt runs but doesn't respond on Insert) I know HAL is deprecated and removed and i should probably write my own UDEV rules, but until then it seems there must a be simple hack that enables mounting VFAT/NTFS devices with specific uid/gid. this question/answer helps a lot, but not specifically to the above.

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• Is there any way to limit my Internet connection to a per program basis?

  - by Igoru

  My Linux connection is REALLY free. I live in Brazil, so where I live I can only have 1 Mbit/s. Yes I know it's sad, but it's not the point. Everytime I'm updating my Ubuntu 9.04 or downloading something, it does eat all my bandwidth. Like, while update-manager is downloading the packages, I can see by netspeed applet in my panel that the incoming traffic goes to 110 kB/s. And then, my Emesene suddenly goes disconnected, and I can't navigate. As you can imagine, I can't use my Internet connection again until the packages are all downloaded or I cancel the update in the middle. As I said, same thing happens when I'm dowloading something, but less intrusive and immediate. The question is: is there any way to limit that APT/downloads traffic to some way I can still use my other Internet services, or to reserve some bandwidth for common navigation tasks (like we have on Windows, but I forgot this thing's name, it's like "something packages".

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• How to troubleshoot memory card read?

  - by shinjin

  The built in memory card reader in my laptop mounts SD cards as read-only only. This happens both in Windows 7 and Ubuntu. Most of the time. Ever now an then it works. After a some non-deterministic combination of uninstalling/reinstalling/disabling/enabling of the driver with the mandatory reboots the card reader works for a while. Is there any sane way to troubleshoot if it's an actual hardware problem, or just a matter of drivers? I've tested it with several SD cards, that work just fine in other devices. System: Acer Aspire 8951G, Windows 7-64bit

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• Rhythmbox - put a playlist on my iPod

  - by GorillaSandwich

  I have an old iPod nano and currently use iTunes in Windows to management. However, I'm trying to switch to Ubuntu. So far, iPod management is one major holdup. Besides being unable to easily manage podcasts, I also don't see a way to create a playlist and put it on my iPod. I can create a playlist on the computer in Rhythmbox, but I can't drag and drop it onto the iPod. I can create a playlist on the iPod itself, put I can't drag and drop songs from my library into it. If I right-click the songs, I can add them to playlists on the computer, but not on the iPod. How can I create a playlist of music in Rhythmbox and sync it to my iPod?

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• Attempting to caue packet loss with netem doesn't work - possibly because of NAT (but delay does work)

  - by tomdee

  I have traffic from a WIFI access point routed via an Ubuntu box. I have two network interfaces which are NATed *filter :INPUT ACCEPT [11:690] :FORWARD ACCEPT [0:0] :OUTPUT ACCEPT [37:6224] -A FORWARD -s 192.168.2.0/24 -i eth1 -o eth0 -m conntrack --ctstate NEW -j ACCEPT -A FORWARD -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT COMMIT # Completed on Thu Mar 15 13:37:21 2012 # Generated by iptables-save v1.4.10 on Thu Mar 15 13:37:21 2012 *nat :PREROUTING ACCEPT [0:0] :INPUT ACCEPT [0:0] :OUTPUT ACCEPT [0:0] :POSTROUTING ACCEPT [0:0] -A POSTROUTING -j MASQUERADE COMMIT If I run a ping app on an Android device connected to the WIFI network I can happily ping google. If I use netem to introduce some delay tc qdisc change dev eth0 root netem delay 100ms I can clearly see pings taking longer. If I use netem to introduce some packet loss tc qdisc change dev ifb0 root netem loss 50% then I see no change. Packet loss does work fine for locally generated traffic, just not for traffic coming in over the network that's being NATed. Any ideas how to sort this out?

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• Storage disk format to use to be utilised by all OS

  - by ClothSword

  Aiming to have a large internal HDD to store files, and several OSes on separate disks. They all need to read and write to one storage drive. Ubuntu (13.04+) Mac OSX (10.8+) Windows (7+) What format should the drive be? Would like to avoid buying third party software, here's what I have discerned so far: NTFS - Can't be written to by Mac without buying third party software? ext3 - Windows can't read, third party software in development. Mac has OSXFUSE HFS+ - Buy third party and/or faff around to get working on windows exFAT - Cross platform, but breaks MS patents?

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