[GE users] How to clear internal hostname cache?

Kim Leng Goh kimleng.goh at gmail.com
Wed Mar 22 06:45:57 GMT 2006


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Wow, it's amazing that a normal user (not root) can execute
/boot/kickstart/cluster-kickstart successfully:

On 3/22/06, Joe Landman <landman at scalableinformatics.com> wrote:
[...]
> 3) if the above doesn't work, then you need to go to the tactical
> battlefield weaponry and re-install that compute node.  Remove all
> traces of compute-0-7 from the sge directories on the head node using
> the qconf tools or the qmon tool, and restart sge on the head node.
>
> Note:  before you do the following, THIS WILL DESTROY DATA AND
> CONFIGURATION FILES ON THE COMPUTE NODE.   Don't do this unless you have
> no other choice.  Rocks will automatically set most everything up for
> you, but if you have made changes, you are going to need to re-replicate
> those changes.
>
> Only if you are really sure you want to do this.  Remember, data and
> other bits will be forever lost from compute-0-7 if you follow these steps.
>
> Once you are really, really sure you want to do this, log onto the
> compute-0-7 (DO NOT TYPE THIS ON THE HEAD NODE!!!!!!!) and type
>
>         /boot/kickstart/cluster-kickstart
>
> and then step away.
>
> The node will be rebuilt.  SGE will be re-installed.  Everything should
> work.


$ /boot/kickstart/cluster-kickstart
Shutting down kernel logger:                               [  OK  ]
Shutting down system logger:                               [  OK  ]

Broadcast message from root (pts/0) (Wed Mar 22 14:42:28 2006):

The system is going down for reboot NOW!


> Unless the Rocks database is toasted.  Or the distribution has been
> damaged.  But you have bigger worries if this is the case.

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