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Diff for "KvmAccess"

Differences between revisions 13 and 14
Revision 13 as of 2010-12-23 00:15:25
Size: 3199
Editor: ClintonEbadi
Comment: fritz is on the kvm now
Revision 14 as of 2011-04-21 17:32:06
Size: 82
Editor: 18970054177
Comment: QjfT3x IJWTS wow! Why can't I think of tihgns like that?
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= IP KVM Tunneling =
To use a VNC through a tunnel, one of the following commands must be issued
''More information needed...''
 /usr/local/bin/stunnel -f -c -d 5900 -r kvm.hcoop.net:15900
 ssh admin@kvm.hcoop.net -L 5900:`dig +short kvm.hcoop.net`:5900

Then use your favorite VNC client to connect to localhost:5900. The KVM password is the same as mire's root password.

Note that the second command uses a numeric IP address because the KVM does not have a DNS server set. We don't want to set the DNS server, because we'd almost certainly forget to update it if it ever changed -- simplest to just run without one.

One known-good VNC client program is {{{xtightvncviewer}}}. After establishing a tunnel, a VNC connection using it may be established as follows.
 xtightvncviewer -bgr233 localhost

Once connected, you will be "looking through" an IP KVM which is connected to a KVM Switch (these are different devices!). By pressing scroll lock twice and then the up or down arrow (ie SCRL SCRL UP or SCRL SCRL DOWN) you can switch between the various machines connected to the KVM Switch. Currently there are two: deleuze and mire.

= Serial Port =

To access the serial port, use one of the following:
 ssh -t admin@kvm.hcoop.net tip /dev/tts/0
 ssh -t admin@kvm.hcoop.net tip /dev/tts/1

One command corresponds to each of the two serial port connectors on the KVM (we're not sure which is which). After executing the command above, your ssh session will give you a console on the chosen serial port (which is probably connected to the remote power-cycling machinery of one of the servers)

= Screenshots =

{{attachment:Picture 1.png}}

{{attachment:Picture 2.png}}

= Configuration =

To change the password to the KVM, ssh to root@kvm.hcoop.net and do two things:


This will run the KVM vendor's setup program. Don't forget to choose the "Write configuration changes" option when you're done with setup! This will cause the KVM to reboot, so do not be alarmed if you get disconnected.

= More Instructions =

Log into kvm.hcoop.net with the secret password.

You can then click on the screen to launch the a Java applet, or you can connect with a vnc client natively if the applet is too slow on your system.

The screen will probably be blanked; press a key to refresh the screen.

== KVM Channels ==

  * 1: deleuze
  * 3: mire
  * 7: fritz
  * 8: hopper

== Switching Between KVM Channels ==
To switch between screens use the sequence Scrl Lock, Scrl Lock, followed by the Up or Down key.

You cannot press the keyboard Scroll Lock button. Instead, click on the [S] button twice. Before you click, mouse over the [S] and ensure that it is highlighted as below.


A caption with the channel number should appear in the upper left corner of the screen as pictured below. Now press Up or Down to change the active channel.


== Sending Magic SysRq Key ==

Open the keys menu and toggle Left Alt


Then send PrintScrn + command key using your physical keyboard.
QjfT3x IJWTS wow! Why can't I think of tihgns like that?

QjfT3x IJWTS wow! Why can't I think of tihgns like that?


KvmAccess (last edited 2014-03-21 20:23:44 by ClintonEbadi)