Ubuntu :: Server Disappears From Network Hard Reboot Required
Nov 15, 2010
I've been having issues with my ubuntu server (10.04 LTS) lately. Every once in a while, anywhere from 3 days to a month or more, the server will just disappear from the network. All manner of trying to reach it from the outside fails, even from the LAN. Since it's headless, this is kind of problematic. After a hard power down or reboot, the server will always come back online, but this is very annoying for a remotely administered server.
What should I look for when trying to determine why the server keeps going offline? I can't tell if there are any other issues like a hard lockup or anything, just that it is not on the network anymore when this happens.
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Nov 18, 2009
I am trying to set up bridge, and everything seems to be ok, except 1 thing, it disappears after reboot. So, what I am doing:
Code:
brctl addbr br0
brctl addif br0 eth0
and adding /etc/sysconfig/network-scripts/ifcfg-br0, here it is:
Code:
GATEWAY=192.168.1.1
DEVICE=br0
BOOTPROTO=none
NETMASK=255.255.255.0
DNS1=208.67.222.222
DNS2=208.67.220.220
TYPE=bridge
HWADDR=00:18:f3:75:18:78
IPADDR=192.168.1.3
IPV6INIT=no
ONBOOT=yes
USERCTL=no
and my ifcfg-eth0 is:
Code:
GATEWAY=192.168.1.1
DEVICE=eth0
BOOTPROTO=none
NETMASK=255.255.255.0
DNS1=208.67.222.222
DNS2=208.67.220.220
TYPE=bridge
HWADDR=00:18:f3:75:18:78
IPADDR=192.168.1.3
IPV6INIT=no
ONBOOT=yes
USERCTL=no
How to make it working after reboot?
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Jan 14, 2010
The Short VersionTwo Vista machines connected to a 2Wire wireless router (AT&T UVerse) via DHCP.One (headless) Ubuntu 9.10 Server machine connected (tried both wireless and wired at different times) to the same 2Wire router via a static IP.Samba is installed on the Ubuntu Server.Vista computers connect perfectly to Ubuntu Server.Various file transfers/communications ensue.Ubuntu Server 'disappears' from network.Sometimes after a couple of minutes.Sometimes longer.Cannot ping server.Cannot SSH into server.It's just 'gone'. Reboot server. Everything's fine (can ping, find, connect, etc.) until (some minutes later) server 'disappears' again.
The Long Version
Network Configuration
Code:
|---------------------|
| Vista Machine #1 |
| 192.168.1.70 (DHCP) |
|---------------------|[code].....
The Question: Why won't my damned Ubuntu server just stay connected to the network?
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Sep 21, 2010
I have reinstalled 10.04 several times and have the same result. After the install everything works and looks great. Then after the first power down and reboot the top menu bar and bottom panel are gone.
The desktop wallpaper (bare of anything) is there, still responds to right-clicks, etc, and the system seems to function, but the menu bar is missing. The extents of the desktop are still the same, so it's not the desktop extending outside of the screen display area (mouse doesn't disappear over the edge).
I can alt-F1 to get to the menu bar menu items, and they function - appearing from the top edge of the screen, but cannot activate them via mouse. I have reinstalled several times and this consistently happens every time. I had 8.10 on this box and it didn't do this. I reinstalled 8.10 and it was fine again, and then back to this with reinstalled 10.04. The 8.10 was a virgin install and I reformatted the drive on every install so there's no legacy crap clinging on.
I can use ctrl-alt-del to shut down/restart/etc., and alt-F2 gets me the command line. All seemingly functional.
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Jan 5, 2011
I had a thread earlier asking for help installing Ubuntu Server to my homemade atom based NAS, but I gave up on that (GUI's are more helpful to me ) and so now I'm running Ubuntu 10.10 Desktop 64bit edition.Last night I was finally able to get mdadm set up. I have two 1TB disks set up in RAID1 config. I used
Code:
sudo mdadm --create /dev/md0 --level=1 --raid-devices=2 /dev/sdb1 /dev/sdc1
to create the array, and then waited until it finished assembling. Then I used System>Administration>Disk
[code]....
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Jun 15, 2011
I have created a mount point (/media/a500) for my Iconia Tablet and added the following to get it to mount automatically.
First download and install mtpfs......Then do this
Code:
sudo nano /etc/udev/rules.d/51-android.rules
SUBSYSTEM=="usb", ATTR{idVendor}=="0502", MODE="0666"
sudo mkdir /media/a500
sudo chown user:user /media/a500
[Code]...
This works just fine for Fedora 14 but on Fedora 15 the mount point disappears on reboot ie there is no /media/a500 folder. a500 appears under devices in Nautilus and mtpfs is ok as I can mount the device via the command line by creating the mount point setting ownership and running
Code: mtpfs /media/a500
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Aug 7, 2011
Sometimes after I reboot, by desktop background is just a black screen. When I go to the settings folder, it shows the image that it previously was, but i have to change either the "zoom" or "tile" settings, or just change the image in order for it to reappear. I really have no idea why this happens, and certainly does not happen with every reboot. If it helps, I am using Intel Ironlake Mobile.
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Jan 30, 2011
When I log onto my 10.04 server via ssh, there is the /etc/motd displayed. This motd is made up each time by the files in /etc/update/motd.d/. There is this one file : update-motd-reboot-required The content is exec /usr/lib/update-notifier/update-mot-reboot-required and the content of this one is : if the file /var/run/reboot-required exists, print it.
But who is making this file and why ?we know who it is: it's pam_motd.. but why would I reboot ??!?
editt2 : nvmd [URL]
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Feb 12, 2011
I'm currently administering an Ubuntu box remotely. It's set to install security updates automatically, and it notifies me when I log in via ssh whether it has installed an update which requires a reboot. For example, if it installed a kernel update a few days ago, the update manager will touch a "reboot_required" file in /var/run, and when I ssh into the machine today I'll be greeted with a "System restart required" message. Is there a similar functionality for yum or Packagekit?
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Nov 9, 2010
I'm a Linux noob an I am really desperate for some top, top, top assistance. Been battling a while now with my iBurst USB modem driver and hope there is someone out there that can help? I have been through umpteen forums and threads and tried literally everything I read, but to no avail. I also realize there aren't many Ubuntu users that use the iBurst modem, but I am appealing to the few out there that do.
I have installed the open source ibriver-2.6.31 for my iBurst USB modem. Initially all went well with fast connection etc., connection everytime I boot, until... I started updates of 10.04 LTS, that is when I became aware, from the forums, that a re-install of the driver is required after every package update due to no "package management" in the iBdriver. what a pain in the proverbial to say the least!
Anyways.. now I am the stage where the driver is always installed, but...all of a sudden, I need to run pppoeconf and set up the driver after each boot to get connected!!!! If I can't find a solution it will force me back to Windoze7 which I dread to do! Can a script be written to pppoeconf (rp-pppoeconf.iso is loaded I think) automatically during boot perhaps?
So any top Linux hacker or "notsonoobasIam" user out there with a iBurst modem and similar pains & mis-fortunate experience please share your ideas and thoughts to correct this problem permanently for me please? (I should maybe mention that the other day I performed the "Grub2 Profile" exercise to try and speed up the boot time, this does not perhaps have something to do with the fact that I need to reconfigure in pppoeconf after every boot does it? I doubt it)
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Jul 22, 2011
I have very small ARM computer with Ubuntu 9.04 (Jaunty) running as a backup and media server for my house. I have attached a new "WD My Passport" 750GB USB drive to it. The drive is recognized and I can mount it and read/write files fine. After several minutes, the drive goes to sleep, even if I was in the middle of writing a backup to it. I can force it to start again with sdparm, but it needs to not shut itself down while it's being written to in the first place. I have tried this command to disable the standby state but it doesn't work:
root@Plug:~# sdparm --clear STANDBY -6 /dev/sdb
/dev/sdb: WD My Passport 0730 1008
change_mode_page: failed setting page: Power condition
I have also been told to change /sys/block/sdb/device/allow_restart from 0 to 1, but no such file exists and one cannot be written there. The hardware itself is fine, if I plug it into a Windows computer, it will not sleep while in use.
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Oct 18, 2010
I was having a discussion with someone who asked me whether a Linux OS has to be rebooted when the hosts file is modified. From personal experience, on Windows I change the file but don't reboot and I've seen others do the same thing. I assume Linux has no exception(s), but is there any reason why a reboot is not required (to at least justify my actions)?
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Jan 24, 2010
the wireless connection works very well when i start using. but once, after my sister took hold of my computer for a moment. the wireless don't seem to work anymore. i asked her what she did but she says nothing. she may ot may not be lying but that doesn't matters. what matters is i cant reinstall back the wireless network.when i first formatted my notebook to ubuntu 8.0, i followed an online instruction to enable wifi to work. it works perfectly well. so when the problems occured, i tried using the same instruction but it doesn't work anymore.
the wireless network does not appears under connection anymore.
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Aug 5, 2011
I am on Ubuntu 10.04. I had a network printer added, but suddenly now the printer seems to have disappeared. What's more, System->Administration->Printing doesn't allow me to add a new printer.The System->Admin.->Printing troubleshoot said the following:
"The CUPS print spooler does not appear to be running. To correct this, choose System->Administration->Services from the main menu and look for 'cups'". System->Admin.->Services does not exist. Searching on the net led me to believe that /etc/init.d/cups start would start cups for me, but that does not seem to be happening.
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Jul 8, 2009
The problem in a sentence: a F10 machine seems to disappear from the network after running for a couple of days, however, the network is accessible from the machine itself. My setup: A router with two machines connected via ethernet. Both are essentially desktop computers, one is a standard machine that is booted every day (let's call it Desktop) and the other runs continuously, having only a keyboard attached (let's call it Server).
After running for a few days, Server becomes inaccessible from Desktop. It doesn't respond to ping, ssh fails etc. Even the router shows that Server is disconnected from the network. There is a ping running in Server that pings a machine in the internet with an interval of 60 seconds, the output is directed to a file. The file shows no failed pings, it even succeeds when the router shows that Server is disconnected.
The most peculiar thing: a random keyboard event (e.g. pressing Shift) will make Server reappear. I don't have to do anything else, just press Shift on Server's keyboard and a few moments later everything is back to normal. The router shows that Server is connected and I'm able to do ssh to Server.
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Jan 28, 2010
On about 90% of bootups I find that network manager has disappeared from the notification area to be replaced by a random duplicate of one of the other icons (at random). If I remove the notification area and add it again all is fine.
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May 5, 2011
Right now i have a HP DL 180 Server with 130 Gb Hard Disk & 8 Gb ram after Raiding0+1. i want to configure Domain Controller Server for my office for 200 to 300 Users. what should the partition size must be mentioned in my 130 Gb Hard Disk, is that going to be Sufficient for ME ?
i am bit confused about /Usr /Var /Boot partitions, as i need to manage perfectly in 130 GB
if i go with 4 Gb swap and remaining for " / " is that will be fine ? should i need to specify partition sizes separately for / tmp /var / usr ..
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Jan 27, 2011
Removed hard drive from our office server to check model number (windows pc). reinstalled same hardrive and now i can't connect to server from the network (MAC). it gives me error code -43.
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Apr 18, 2010
If the wifi network gets disconnected why is the wireless authentication key needed again and again...cant ubuntu store and retrieve it...
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Sep 24, 2010
my pc freezes and nothing can be done but hard reboot. I apologize in advance if this thing is brought up before and for the length of my post. I have found a lot of interesting relevant stuff like URL... and URL... but couldn't resolve it.I am new in Linux and already my main choice of OS.I have Ubuntu 10.04, fully updated. Runs on an ASUS P5Q (listed in Ubuntu compatible m/b's) with ATI Radeon 4800 (don't know if relevant). In the last week approximately, I have realized that in seemingly random times the system freezes. I am not absolutely sure if this was something that could have happened earlier on, but it just didn't occur. It appears that this started after some update. The interesting part is that it came to my attention that it is 100% certain that will freeze during a file synchronization analysis between usb hdds with Unison (!). This is something I didn't use to do, and of course I have never been able to complete since I have this situation.
After that, two things come to my mind. One is, I wonder why the sync process provokes this, and if has got anything to do with all things said about X freezes, ACPI or hardware acceleration. Second, I wonder how on earth I could locate the relevant updated packages and rollback. You see, last week I remember at least 4-5 updates with 5-10 packages updated. Running through the dpkg log doesn't help me a lot, the list is fairly big, and I believe for a result not exactly guaranteed
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May 17, 2011
on a Vimeo video in Firefox, and my computer became "partially frozen". The video stopped, but the audio continued to play to the end, but I couldn't clear the video. I pressed ctrl-f2 to switch to my other desktop, but it just brought up a blank screen, and switching back makes no difference.As it stands I have a black screen with my mouse cursor on it (I can move the cursor, yes). I'm new to linux, and I want to know if there are any keyboard shortcuts I could try to fix this. I'd rather not hard reboot whenever I run into a problem, I just don't know the terms to google for
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Oct 9, 2010
Completely new to Linux. I have two PC (both with Windows XP SP3) and an HP printer that are networked together with Ethernet cables and a 2Wire gateway. I now would like to install Debian GNU/Linux 5.0.6 on one of the computers and make it a dual-boot machine. The other PC will remain with Windows XP only. During the installation of Debian (5.0.6, 64-bit), I am asked to supply the domain name of the network.
It tells me that I can make up a name but to make sure to use the same domain name on all the computers. I have set up what Windows calls a Workgroup so that the two PCs can have access to each other's files. Would the name that I had assigned to the workgroup in Windows be what Debian is asking me about? The end result is that I want to be able to access Windows files and folders using Debian and vice-versa.
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Mar 9, 2010
I would like to use a wireless network from Ubuntu. In the network drop-down menu I select a network (this is a University network I have an account there). Then I get a windows with the following fields:
Wireless Security: [WPA&WPA2
Enterprise] Authentication:
[Tunneled TLS] Anonymous Identity:
[] CA Certificate: [(None)]
Inner Authentication: [some
letters] User Name: []
Password: []
I put there my user name and password and do not change default value and leave "Anonymous Identity"blank.
As a result of that I get "Authentication required by wireless network". How can I solve this problem?
I think it is important to notice that our system administrator tried to find some files (which are probably needed to be used as "CA Certificate"). He said that he does not know where this file is located on Ubuntu (he support only Windows). So, probably this is direction I need to go. I need to find this file. But may be I am wrong. May be something else needs to be done.
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Jan 26, 2010
I'm running 9.10 on a Dell IM1012-6780BK netbook (very nice and snappy, btw). I was in the process of installing the ubuntu-restricted packages (apt-get was halfway into setting-up libtwolame0) when the machine locked up and I was forced to do a hard reboot. Now, at the CLI, I try to remove the corrupted package before re-installing, but I get the following errors: (they seem to be persistent, no matter what I'm trying to install/uninstall via apt-get...$ sudo apt-get --purge remove ubuntu-restricted-extras
Reading package lists... Done
Building dependency tree
Reading state information... Done
[code]....
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Jul 16, 2010
I am working on a NFS server embedded on a PowerPC plateform (4650EX, 512Ram, 1 GB Ethernet) but i can't mount my exports folders from my client. Here are messages :
[Code]...
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Jan 19, 2010
I set up the 'Proxy' from Yast and they tested successfully. I can connect to internet, but why am I getting 'ERROR 407 proxy authentication required'?
FYI, my comp is the part of company .NET network with bunch of firewall and security...
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May 8, 2010
I just got ubuntu installed for the first time, I tried mounting my hard drive to my desktop so i can have easy access to it, but when i restart ubuntu it always dissapears and i have to go to places then click on the hard drive again to mount it to my desktop.
Is there a way of keeping this on the desktop without having to do this all the time? I have the latest ubuntu version.
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Jun 8, 2010
When my router switches off... the wifi signals go off... then why the hell ubuntu keeps on connecting to that very wifi like hell and when doesnt connect shows the prompt to manually connect... with the wifi key already filled in... whats the use of saving the key when it has to ask the question from me either to connect or not?? and if its isnt available... just wait when its available.. and for the prompt,i have only option to cancel(because wifi isnt available at that moment if i select connect it again tries to connect like hell..which it cant) and if i cancel it wont auto-connect when wifi does get available! what the heck?
Windows has this done the right way... when the wifi isnt available.. it dissconnects silently.. and when it becomes available connects silently.. why isnt this been done this way in ubuntu??
Ive attached an image..one can see in the image that it says "authentication required by wireless network" when there isnt any.. as router has gone down!
And the second thing i want to report is that there is no way to report this bug from ubuntu... the launchpad.net talks of going through bug reporting process which is done against a definite package... now how does a user know which package would be causing this error?? there should be a more clear process of reporting such bugs to ubuntu team... which a common man using ubuntu( ubuntu says its most user friendly of all distros right?) can report..
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Mar 25, 2011
I downloaded openSUSE-11.4-KDE-LiveCD-i686.iso from software.opensuse.org: Download openSUSE 11.4 yesterday.It's a liveCD,not a DVD. Then I used a dd command to make a live USB by the instruction from this page:SDB:Live USB Then I shut down the computer,and boot from the usb. I went to the yast--DSL to make a new adsl connection.But after I configured everything,yast told me one package needed.The package's name is "linux-atm-lib". I haven't connected to internet.How could I do to install a package and make a connection?
Now I am downloading a DVD.Does a DVD include the package called "linux-atm-lib"?
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Jun 12, 2010
Im trying to find out What all network hardware is required for a successfull Iscsi setup. Example Do you need two network cards that support it. Or do you just need one network Iscsi adapter for the storage box, and the other machine just have a normal NIC. What type of Switch would be needed as well for decent transfer rates.
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