welcome: please sign in

The following 243 words could not be found in the dictionary of 7 words (including 7 LocalSpellingWords) and are highlighted below:
above   access   active   address   admin   Administration   After   alarmed   almost   Alt   an   and   appear   applet   are   arrow   as   attachment   be   because   Before   below   between   Between   bgr233   bin   blanked   button   By   by   can   cannot   caption   Category   cause   certainly   change   changed   changes   channel   Channels   choose   chosen   click   client   command   commands   Configuration   configuration   connect   connected   connection   connectors   console   corner   corresponds   Currently   cycling   deleuze   dev   devices   different   dig   disconnected   do   does   Don   don   done   down   Down   each   ensure   established   establishing   ever   executing   favorite   followed   following   follows   forget   fritz   get   give   good   have   hcoop   highlighted   hopper   ie   if   in   information   Instead   Instructions   into   is   issued   it   Java   just   Key   key   keyboard   keys   known   kvm   kvm1   kvm2   launch   Left   left   local   localhost   Lock   lock   Log   looking   machinery   machines   Magic   may   menu   mire   More   mouse   must   natively   needed   net   not   Note   Now   number   numeric   of   on   Once   one   One   Open   option   or   over   password   physical   Picture   pictured   png   Port   port   power   press   pressing   Print   probably   program   re   reboot   refresh   remote   root   Rq   run   screen   screens   Screenshots   Scrl   Scrn   Scroll   scroll   second   secret   send   Sending   sequence   Serial   serial   server   servers   session   set   setup   short   should   simplest   slow   so   ssh   stunnel   sure   Switch   switch   Switching   Sys   sysrq   system   System   that   The   the   then   Then   there   these   things   This   through   tip   to   To   toggle   too   tts   tunnel   Tunneling   twice   two   Up   up   update   upper   use   uses   using   usr   various   vendor   vnc   want   we   We   when   which   will   with   without   Write   xtightvncviewer   You   you   your  

Clear message
Edit

KvmAccess

1. 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

or

 ssh admin@kvm.hcoop.net -L 5900:`dig +short kvm.hcoop.net`:5900

Then use your favorite VNC client to connect to localhost:5900.

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.

2. 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)

3. Screenshots

Picture 1.png

Picture 2.png

4. Configuration

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

  setup

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.

5. 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.

5.1. KVM Channels

5.2. 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.

kvm1.png

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.

kvm2.png

5.3. Sending Magic SysRq Key

Open the keys menu and toggle Left Alt

sysrq-menu.png

Then send PrintScrn + command key using your physical keyboard.


CategorySystemAdministration

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