[ubuntu-uk] Ubuntu Server 11.10 -- how do I enable remot access via Putty?

2012-03-12 Thread Alexander Birchall

Hi,
 
I thought I was quite experienced at administering a Ubuntu Server, but I am 
totally confused by the graphical desktop for Ubuntu Server 11.10.
 
I need to be able to remotely connect to the server with Putty (my choice for 
remote access to servers).  But how do I enable this remote access -- when I 
try I get a message saying network connection refused.
 
Do I need to disable/configure a firewall?  How would I do that?
 
Hoping someone can assist.
 
Best wishes,
 
Alex  -- 
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[ubuntu-uk] Adding storage two a Ubuntu server?

2011-07-08 Thread Alexander Birchall

Hi All,
 
I find that a Ubuntu server (Release 11.04(natty) I inherited has available 60 
GB of unused space on the hard disk.  I would like to expand the existing 40 GB 
available to the server to incorporate this extra 60 GB, but I have so far been 
unable to do it.
 
Using the Disk Utility on the Adminstration menu, I have been able to create a 
new partition and drive in the free 60 GB.  However, I have to mount this new 
partition manually, after the server has started.  The new partition then 
appears as an icon resembing a drive on my desktop.
 
I have also used the GPARTED Live CD, but got the same result as above.
 
Any advice would be most gratefully recieved.
 
Many thanks.
 
Alex
 
 
 
 
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Re: [ubuntu-uk] Ubuntu Server Upgrade -- how long should I wait for server to restart?

2011-02-22 Thread Alexander Birchall

Hi John and Tyler,
 
The situation is that the server was moved to a virtual platform a few months 
ago.  Since then I only have remote access if the server has fully restarted.  
If a problem such as this develops, then I have to rely on our IT department 
(where linux skills are thin on the ground) who in turn rely on the providers 
of the virtual platform.

1.  The providers of the virtual platform report that they have restarted the 
server, but this has not restored my access.
 
2.  I do not get a response from pinging the server -- however, I have heard 
that ping has been disabled by our network administrators.
 
3.  This is what the monitor was displaying:
 
"Gave up waiting for root device.  Common problems:
 -- Boot args (cat /proc/cmdline)
  -- Check rootdelay= (did the system wait long enough?)
  -- Check root= (did the system wait for the right device?)
 -- Missing modules (cat /proc/modules: ls /dev)
 Alert! /dev/mapper/eprints.mdx.ac.uk-root does not exist.  Dropping to a shell!
 
 BusyBox v1.13.3 (Ubuntu 1:1.13.3-1ubuntu11) built-in shell (ash)
 Enter 'help' for a list of built-in commands.
 
 (initramfs) _"
 
Many thanks for you assistance!
 
Alex
 
 



Date: Tue, 22 Feb 2011 11:44:23 +
From: j...@jr0cket.com
To: ubuntu-uk@lists.ubuntu.com
Subject: Re: [ubuntu-uk] Ubuntu Server Upgrade -- how long should I wait for 
server to restart?


On 22 February 2011 10:23, Alexander Birchall  
wrote:


Hi,
 
I have just gone through the procedure of upgrading from Ubuntu server Hardy 
Heron 8.04 to the latest version (10.04 LTS), using the upgrade manager.  The 
procedure took a couple of hours to complete, and then I was asked to restart 
the server.  This I did, but that was half an hour ago.  How long should I wait 
for the server to return to life?
 
Many thanks.
 
Alex Birchall


Hello Alex,
How long you should wait probably depends on what the server is doing now.  You 
request does not state what state the server is currenty in, so it is difficult 
to advise.

Has the server actually rebooted or is it still thinking about it?
Did you select reboot or shutdown ?
How far in the boot process did the server get after the reboot?  
Did you see the the bios screen?
Is there anything showing on the monitor, such as a little white flashing 
cursor?
Do you get a response if you ping the server?

If there is no disk activity and you cant ping the server and there is nothing 
on the screen, then it sounds like a manual reboot is in order.  If so, then 
try Ctrl-Alt-Del keyboard combination as a more elegant way to shut down the 
server (compared to the reset button).

The more information you can give us then the better chance we have of giving 
you something other than general information.

Thank you
-- 
John Stevenson
Lean Agile Consultant / Coach
jr0cket.com  |  leanagilemachine.com


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[ubuntu-uk] Ubuntu Server Upgrade -- how long should I wait for server to restart?

2011-02-22 Thread Alexander Birchall

Hi,
 
I have just gone through the procedure of upgrading from Ubuntu server Hardy 
Heron 8.04 to the latest version (10.04 LTS), using the upgrade manager.  The 
procedure took a couple of hours to complete, and then I was asked to restart 
the server.  This I did, but that was half an hour ago.  How long should I wait 
for the server to return to life?
 
Many thanks.
 
Alex Birchall
  -- 
ubuntu-uk@lists.ubuntu.com
https://lists.ubuntu.com/mailman/listinfo/ubuntu-uk
https://wiki.ubuntu.com/UKTeam/


[ubuntu-uk] FW: Server shutting itself down or going into a deep sleep

2010-01-05 Thread Alexander Birchall

Hi All,

Early last month I emailed the ubuntu-uk mailing list about the Ubuntu server I 
own that occasionally makes itself unavailable on the network (though it does 
respond to ping).

To avoid having to physically switch the server off and on, Neil Greenwood on 
this list suggested I try using the Magic SysRq key on the keyboard.

Well, the server did go down this morning at about midday (after remaining up 
over the Christmas/New Year holiday).  Around 2pm, I tried the Magic SysRq key 
and it worked -- the server restarted itself without me having to physically 
switch it on and off.

Neil suggested that in order to track down the cause of this problem, I should 
look in the log files, in particular dmesg or messages or syslog.  I have 
looked in these files but cannot see anything that paricularly stands out -- 
but suspect that I'm probably missing something.  If I posted these files to 
this list, I wonder would anyone be able to give them a quick scan to see if 
there's anything obvious?  Or is there something in these log files that should 
not be made public?

Happy New Year!

Alex
  
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[ubuntu-uk] panic, panic_on_oops, panic_on_unrevocered_nmi?

2010-01-04 Thread Alexander Birchall

Hello,

In the manual entry for "bootparams" it states:

"panic=N
By default the kernel will not reboot after a panic, but this option will  cause
a  kernel reboot after N seconds (if N > 0).  This panic timeout can also be set
by "echo N > /proc/sys/kernel/panic"."

Therefore, I thought it advisable to set the kernel to reboot 30 seconds after 
a panic, which I have done (on a Hardy Heron 8.04 server).

I see that in /proc/sys/kernel/ there are also files named "panic_on_oops" and 
"panic_on_unrecovered_nmi", both of which contain one value, that value being 
zero.  Would it be advisable to set the value in these files to 30 as well?

Many thanks

Alex Birchall

  
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