Ubuntu Servers :: Sudden Change In Server Behavior
Jul 4, 2011
I have been running two Ubuntu 10.10 servers for some time now. My main server is 10.111.1.65 and backup server is 10.111.66. The main server is to host my website and ssh remote access (Key auth). The backup server pulls via ssh key auth what is in my /var/www (among other folders) to the backup home dir (encrypted). For some reason today I checked the uptime and it was 7 hours on both servers. All my other computers on the same power supply have a uptime of over a month. For some reason I now cant access backup via ssh from main's key (I could before) and I can not get to the home dir, see below:
Code:
carlos@UbuntuSvrDell2400:~$ sh "Access-Your-Private-Data.desktop"
Access-Your-Private-Data.desktop: 1: [Desktop: not found
[code]...
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May 16, 2011
After coming back from my coffee brake and disabling the screensaver lock with my password, suddenly the theme of the window widgets and upper bar changed before my eyes to ancient GTK-style.
Open programs (unrelated)
firefox
remmina
[code]...
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Nov 18, 2010
I recently installed a new ubuntu system (10.10) as media center. I am running Gnome and xbmc on it. Until here, everything perfect!
I bought one of those cheapass media center keyboards with multimediakeys. Except for one, they all work out of the box.
My problem: When i press the volume down key, gnome lowers the volume of my mediacenter. This might be good for most users, but i have a surround receiver/amplifier (Denon AVR3310) that should handle the sound.
In fact, i am looking for this: When i press the volume up/down key, instead of changing the volume of my mediacenter, gnome should execute a script i wrote. This script sends commands to my receiver (using the serial port or the network connection) to lower/raise the volume.
Small additional question: I would like to get the one button that doesn't work yet to work. I have a 'mc' (mediacenter) button on my keyboard. I would like to make this launch xbmc. When running 'xev', i don't see any output when i press the button.
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Nov 17, 2010
I've been running Ubuntu 10.10 for four days now and love it. Is there a way to change the default behavior of the power/logoff icon on the taskbar?(not on Ubuntu now and forget what the bar is called) Instead of asking me what I want to do (power down,restart, log off, etc) I would like it to power down the PC.
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Dec 2, 2009
I upgraded to Fedora 12 a few days ago and it seems that my X session is timing out after an idle period. Where can I change the settings or disable this behavior which was not happening on Fedora 11?
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Aug 16, 2010
I'm using 11.3 64 KDE upgraded from 11.2. Every time I hit the shift key, the mute toggles. I've already tried changing the settings for kmix under global key shortcuts. Any ideas on how I stop or change this behavior?
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Jun 14, 2010
How do I change the screen blanking behavior on Linux virtual terminals?
For example, if I switch to a VT from X, login, and leave the system alone for 5 minutes or so, the screen will blank like a screensaver. It comes back with any keypress, like a screensaver.
Mostly I just want to change the timeout, but I'm also interested in other settings.
If it helps, one of my systems is running Ubuntu 10.04 with the stock graphics drivers. fbset shows the console using the radeondrmfb framebuffer device.
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Sep 29, 2010
I have a DNS server that's been working just fine up until now. I have a local domain, "galapagos.office" set up, with several subdomains on it. I've been able to get to all the subdomains just fine for the last couple weeks from several different machines.Now something weird's happening:
I CAN ping wiki.galapagos.office from a local machine
I CAN do an nslookup on wiki.galapagos.office from a local machine
I CAN see wiki.galapagos.office in a browser from a local machine
I CAN'T ping wiki.galapagos.office from the DNS server itself
I CAN'T do an nslookup on wiki.galapagos.office from the DNS server itself
I CAN'T see wiki.galapagos.office in a browser from the DNS server itself
And I COULD do all these things before. I don't know exactly when things went south because I almost never do anything from the DNS server itself.
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Mar 8, 2011
which i have been using whilst setting it all up at my home, connecting to the internet without any problems until now.. All of a sudden it can't access the net, it can't ping my router.. but i am able to VNC to it accross the network, passing through said router. I have it set up with a static IP, and the router IP put in as DNS and gateway, when i tell it to get an IP vi DHCP, still the same problem.. I have no idea how to get this working, any ideas?? I am new with Linux, so please exlain what i need to do..
The only thing running on this server is basically Freeradius2, Coovachilli, Webmin and a virtual machine, which is an iRedOS Mail server.
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Apr 18, 2011
I've got an interesting problem when it comes to wildcard entries in bind. If I put the following in:
qa.express IN A 172.16.0.10
* IN A 172.17.1.156
If I then look up "express.example.com" it doesn't return an answer - it *should* return 172.17.1.156, but it won't unless I put that hostname in specifically. qa.express.example.com resolves as expected.
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Jan 20, 2010
I've noticed something strange in the behavior of how Ubuntu server obtains it's IP address versus Ubuntu desktop and other versions of linux and Windows. When Ubuntu desktop obtains an IP address from my router that address is retained from one bootup to the next, same behavior as Windows, SuSE, and pretty much any other OS. Ubuntu server on the other hand grabs a different IP address everytime it boots. At first I guessed it was a difference in /etc/dhcp3/dhclient.conf so I replaced it with the dhclient.conf from Ubuntu desktop but no dice, it still grabs a new address every time.
In /etc/network/interfaces Ubuntu server defines the loopback interface and primary network interface, just as it should but Ubuntu desktop does not define the network interface, only the loopback interface. I'm guessing something else controls does this. Desktop appears to be storing previous IP lease information in /var/lib/dhcp3/dhclient.eth0.leases but server doesn't, /var/lib/dhcp3/dhclient.leases is always empty and there's no other files in /var/lib/dhcp3/.
Apparently something isn't writing old lease info there. Without setting a static IP address, how can Ubuntu server be configured to retain the same IP address between boots like Ubuntu desktop?I'm using Ubuntu server 8.04LTS, Ubuntu desktop 9.10 & 9.04, SuSE 11.0, Linux Mint, Windows XP, pfSense 1.2.2 as router.
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Aug 25, 2010
I'm working on a remote Ubuntu 9.10 server, which is accessed via VPN. I installed Joomla, but had difficulty uploading new components, which I traced to a file permissions problem. I used FileZilla to FTP onto the site and tried to make the chmod changes I needed, but the commands kept failing. Eventually, I contacted the sys admin and told him I thought that there was an ownership problem with the directories. He checked and told me that I was logging in with exactly the same user name and password that he was using (it's not a live system currently) and that he could make chmod changes without any problems. Because all my attempts were still failing, he eventually did the following:
chown -R administrator:administrator /var/www
/var/www is where all the Joomla files are stored and Administrator is the user name.Now I find that when I run a chmod command in FileZilla, the server reports that it worked (see below):
Status:Connected
Status:Retrieving directory listing...
Command:CWD /etc
[code].....
However, if I go back and check the tmp folder permissions, I find that they are still set to 777.This still looks like an ownership problem to me, but I don't understand why the server seems to think that the chmod changes are working, when they aren't.
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Feb 3, 2011
I finally got the server running. All seems OKAY, however I want to change the default player on my server. As of now, when I upload a file, it plays but has no "play/pause/stop/mute/fullscreen" buttons. How do I get those? I've tried installing FFMPEG, MPlayer and a few others to no avail. Please suggest a tried&true method of allowing for this. I need it to be able to at least play audio(mp3) and video(mp4,wmv,avi,flv)
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Mar 17, 2010
I'm using comcast, and I setup my server, everything works fine.But later I found out that the server inet address is changing everyday, and it makes my server almost not accessible.Is there anyway to fix that problem??
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Jun 15, 2010
I have a ubuntu server running on a ten year old desktop and it runs great but i cant seem to change the video out put away from the normal anolog port to a TY port.My server is just for home use and I do not know the terminalThe reason I need to move to the other port is I do not have a screen for it but I do have a little old TV that will work.
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Sep 12, 2010
On Ubuntu Desktop editions, there is a GUI application which allows easily changing to a different server. It can even find out how one is the fastest update server.Is there a corresponding command line tool available to do this? Because I'm using the Server edition without GUI. I hate to manually edit /etc/apt/source.list.
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Nov 15, 2010
I installed server 10.10, but it has the wrong keyboard layout. Can i change it to swedish via ssh, because the keyboard preferences wont start via the vnc?
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Mar 10, 2010
i need to change ssh port on the servers including centos and ubuntu when i make changes to /etc/ssh/sshd.config and change the port to something else restart sshd then i can determine that port 22 is not working but ssh does not connect to new port it says "no route to the host"
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Dec 17, 2010
Have a bit of a dilemma I'm trying to track down. Have a user using both date and ps commands with & at the end of the line in a shell script. When he runs the script, it waits until he hits ENTER to get back to a prompt. Other times he doesn't. Also, I've noticed that this will sometimes happen, then immediately rerun the script and the behavior stops.
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Nov 15, 2010
For example, when I run top I usually press "C" so I can see the explicit command being run not the executable name if you will.
Is there a way I can modify top such that when I do:
% top
The result is initially displaying the command line and not the executable command?
For example I see initially:
chromium-browser
But would prefer to see:
/usr/lib64/chromium-browser/chromium-browser --type=plugin --plugin-pat
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Aug 9, 2011
I've been using dhcpd for address assignments to PCs for a very long time with no issues. I recently upgraded from lenny to squeeze and now dhcpd seems to have new behavior which I can't seem to change. Here's what I want to do. First, I have a simple situation and don't want to get involved with dynamic DNS updates. I have host statements for each of my PCs and a range statement for cases where I install a new device and don't yet have a host statement for it. Previously, I could discover the ethernet address for the new device from the dhcpd log and add a host statement with an address of my choosing for the new device.
I'd then restart dhcpd and do something like reboot the device or issue an ipconfig /renew statement on the new PC. What would happen is that the old dynamically assigned IP address would be NAKed and the device would do a DHCPDISCOVER, etc. and get the new IP address I specified in the dhcpd.conf host statement. In squeeze, this no longer works. The client asks for the old address it got dynamically and the server just says yes. I can't seem to find a way to get it to NAK the dynamic address and use the new address I've specified in the host statement. I'd appreciate any enlightenment on how this is now supposed to be done. Here's my simplified dhcpd.conf file:
authoritative;
log-facility daemon;
ddns-update-style none;
[code]....
Note that the address here was assigned based on a previous range statement and isn't consistent with the above config file.
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Jan 18, 2010
My address bar is all of a sudden missing. Anyone know how I can get it back?
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Mar 4, 2010
My Eclipse just stopped working all of sudden. This happened after I deleted some directories in my workspace, but I doubt that had anything to do with it.
I just get a small empty window when I try to run it. See attached png file.
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Jun 29, 2010
My CPU usage suddenly started oscillating between 5% and 80% causing the computer to lag very badly. This problem came on suddenly--I was using the computer the night before and then the next day I was hit with the lag.Computer info:
IBM Lenovo ThinkpadR61 with Ubuntu 10.04 Lucid Lynx
Intel Duo Core 2GHz Processor T7300
2.5GB RAM (2GB Kingston DDR2 + 512MB DDR2 not sure what brand)
[code]....
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Aug 4, 2010
On one of our Lucid systems, we encounter frequent automatic log-offs - without recognizing any reason: The only common fact appears to be at least one further user being logged in (with graphic desktop).With no advance warning, the active user's screen first goes black, shortly after that, the KDM log-in screen (with the name of the automatically logged-off user) appears. Where the currently active user is lucky, it is not his own name and he can simply switch back to his desktop...Something in fact appears to crash: Programs that were running for the automatically logged-off user are obviously simply killed. (OOo next time starts with rebuilding lost documents, KMail forgets about currently edited eMails.)
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Sep 10, 2010
My computer had been running just fine a couple of days in a row. I had a problem and decided to reboot. But all of a sudden Ubuntu does not boot anymore!
The error shown is:
Target filesystem doesn't have /sbin/init. No init found Try passing init=bootarg
Under it it shows
Busybox v13.3
(initramfs) [etc])
[then a couple of rows mentioning removable disks which is my card reader. And finally just a blinking _ sign.
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Oct 23, 2010
I've been using Duplicity for ages and this morning it suddenly produces the following error:
Code:
I can't figure out what happened. Yesterday I did a successful full backup (as I do each week). This command was to add the usual incremental. I've not changed the scripts, source, destination or GPG keys. I turned up verbosity to see what it was doing, but an obvious error didn't leap out.
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Jul 6, 2011
Greetings. I'm running 8.04 ubuntu. I received a call informing me that all PDF files come up as gobbley gook. I am in my first year, and unfamiliar with ubuntu. Although I accessed the files through the server (Eunice) and they are all labeled as unreadable. When I attempt to open them with document viewer, I get the error message "unable to open. Unknown mime type".
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Jun 5, 2010
I recently did a clean install of ubuntu 10.4 and finally got everything working. All of a sudden my sound stop working and i can seem to tell whats wrong. The strange thing is though when i first turn on the computer i can here the drums at the login screen but after logging in there is no sound anywhere. I checked all the sound preferences and everything looks alright, nothing was muted. I am pretty much stumped..
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Aug 7, 2010
I've noticed a strange pattern with my 10.04 ubuntu x64 install with 2 GB RAM. Suppose I'm using about 1 to 1.5 GB RAM (normal). Over a timespan of several minutes RAM usage will gradually & steadily creep upwards, until for no apparent reason the system will shed ~500MB in a couple seconds, & then this process will repeat itself indefinitely.
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