Moving clusters

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== Warning ==
+
== Actual status (last update: Friday, September 19) ==
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+
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Due to the security problems, the SSH server keys will be regenerated on most cluster servers. This means that you can receive a warning similar to the following when trying to log in for the first time:
+
-
 
+
-
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
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@    WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!    @
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-
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
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-
IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY!
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-
Someone could be eavesdropping on you right now (man-in-the-middle attack)!
+
-
It is also possible that the RSA host key has just been changed.
+
-
The fingerprint for the RSA key sent by the remote host is
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9a:a3:68:49:29:f6:a0:f4:c1:64:a0:fd:98:67:b2:67.
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Please contact your system administrator.
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Add correct host key in /root/.ssh/known_hosts to get rid of this message.
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-
Offending key in /root/.ssh/known_hosts:53
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RSA host key for iridium has changed and you have requested strict checking.
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Host key verification failed.
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-
 
+
-
To get rid of this warning and get access to the cluster, do the following:
+
-
# Find a row that starts with ''Offending key ... '' in the text of the warning and remember line number after a colon (53 in the above example).
+
-
# Open the ''~/.ssh/known_hosts'' file delete the line which number was mentioned in the warning (in '''vi''', press <5><3><shift-G><d><d> in case of the above example; replace numbers according to your needs).
+
-
# Save the file and try to connect to the cluster.
+
-
# If the connection fails again with the same or similar warning, repeat all steps.
+
-
 
+
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== Actual status ==
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; ''centrum''
; ''centrum''
Line 30: Line 5:
; ''carol''
; ''carol''
-
: <font color="blue">Working on ...</font>
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: <font color="green">Server is up and running.</font>
; ''marge''
; ''marge''
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: <font color="gray">... to be moved.</font>
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: <font color="green">Server is up and running.</font>
; ''teogate''
; ''teogate''
-
: <font color="gray">... to be moved.</font>
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: <font color="green">Server is up and running.</font>
 +
 
 +
; ''humboldt''
 +
: <font color="green">Server is up and running.</font>
 +
 
 +
; ''camel''
 +
: <font color="green">Server is up and running.</font>
; althea
; althea
Line 47: Line 28:
: <font color="green">Cluster is up and running.</font>
: <font color="green">Cluster is up and running.</font>
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; francium
+
; francium  
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: <font color="orange">Server is up and running.
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: <font color="green">Cluster is up and running.</font>
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: There will be more maintenance work on server, so it can be restarted several times; meanwhile you can access your data.
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: The cluster is being checked.</font>
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: <font color="red">The nodes will not be started before the '''infiniband''' switch is returned from a warranty repair - it can take two or three weeks.</font>
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; iridium
; iridium
Line 57: Line 35:
; cobalt
; cobalt
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: <font color="red">Not running (Friday?).</font>
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: <font color="green">Cluster is up and running. Some older nodes are broken and will not be repaired.</font>
; argon
; argon
Line 80: Line 58:
; niob
; niob
: <font color="black">Discontinued.</font>
: <font color="black">Discontinued.</font>
 +
 +
 +
== Warning ==
 +
 +
Due to the security problems, the SSH server keys will be regenerated on most cluster servers. This means that you can receive a warning similar to the following when trying to log in for the first time:
 +
 +
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
 +
@    WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!    @
 +
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
 +
IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY!
 +
Someone could be eavesdropping on you right now (man-in-the-middle attack)!
 +
It is also possible that the RSA host key has just been changed.
 +
The fingerprint for the RSA key sent by the remote host is
 +
9a:a3:68:49:29:f6:a0:f4:c1:64:a0:fd:98:67:b2:67.
 +
Please contact your system administrator.
 +
Add correct host key in /root/.ssh/known_hosts to get rid of this message.
 +
Offending key in /root/.ssh/known_hosts:53
 +
RSA host key for iridium has changed and you have requested strict checking.
 +
Host key verification failed.
 +
 +
To get rid of this warning and get access to the cluster, do the following:
 +
# Find a row that starts with ''Offending key ... '' in the text of the warning and remember line number after a colon (53 in the above example).
 +
# Open the ''~/.ssh/known_hosts'' file and delete the line which number was mentioned in the warning (in '''vi''', press <5><3><shift-G><d><d> in case of the above example; replace numbers according to your needs).
 +
# Save the file and try to connect to the cluster.
 +
# If the connection fails again with the same or similar warning, repeat all steps.

Latest revision as of 08:31, 19 September 2008

Actual status (last update: Friday, September 19)

centrum
Server is up and running.
carol
Server is up and running.
marge
Server is up and running.
teogate
Server is up and running.
humboldt
Server is up and running.
camel
Server is up and running.
althea
Server is up and running.
lithium
Cluster is up and running, except for clients l07 and l22-l25 that need some repair (l22-l24 are probably ok, but have to be tested, l25's memory module failed so it is in a service).
helium
Cluster is up and running.
francium
Cluster is up and running.
iridium
Cluster is up and running. Enable queues as needed.
cobalt
Cluster is up and running. Some older nodes are broken and will not be repaired.
argon
Cluster is up and running. All nodes have been repaired.
krypton
Cluster is up and running. All nodes have been repaired.
radon
Cluster is up and running. All nodes have been repaired.
palladium
Cluster is up and running. Some older nodes are broken and will not be repaired.


vanad
Discontinued.
titanium
Discontinued.
niob
Discontinued.


Warning

Due to the security problems, the SSH server keys will be regenerated on most cluster servers. This means that you can receive a warning similar to the following when trying to log in for the first time: 

@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@    WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!     @
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY!
Someone could be eavesdropping on you right now (man-in-the-middle attack)!
It is also possible that the RSA host key has just been changed.
The fingerprint for the RSA key sent by the remote host is
9a:a3:68:49:29:f6:a0:f4:c1:64:a0:fd:98:67:b2:67.
Please contact your system administrator.
Add correct host key in /root/.ssh/known_hosts to get rid of this message.
Offending key in /root/.ssh/known_hosts:53
RSA host key for iridium has changed and you have requested strict checking.
Host key verification failed.

To get rid of this warning and get access to the cluster, do the following:

  1. Find a row that starts with Offending key ... in the text of the warning and remember line number after a colon (53 in the above example).
  2. Open the ~/.ssh/known_hosts file and delete the line which number was mentioned in the warning (in vi, press <5><3><shift-G><d><d> in case of the above example; replace numbers according to your needs).
  3. Save the file and try to connect to the cluster.
  4. If the connection fails again with the same or similar warning, repeat all steps.
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