[Rocks-Discuss] How to remove compute node
hardik patel
I have Rock cluster with 36 compute node + 1 head node. Somehow while adding compute node in my cluster we got entry of mac address of switch in list of host.
compute-0-20: private ----- 00:0f:b5:89:b5:6b -------------- 255.255.0.0 ----------- ------ compute-0-20
this is not compute node but head node is consider as compute-20 node. in real it is 1 gig switch mac address and enty in host list. how can we remove this entry from list of headnode. while running some test it creating problem.
when we try to remove this compute-20 node it is showing below error:
[root@cluster ~]# rocks remove host compute-0-20
Traceback (most recent call last):
File "/opt/rocks/bin/rocks", line 223, in ?
command.runWrapper(name, args[i:])
File "/opt/rocks/lib/python2.4/site-packages/rocks/commands/__init__.py", line 1459, in runWrapper
self.run(self._params, self._args)
File "/opt/rocks/lib/python2.4/site-packages/rocks/commands/remove/host/__init__.py", line 94, in run
self.runPlugins(host)
File "/opt/rocks/lib/python2.4/site-packages/rocks/commands/__init__.py", line 1210, in runPlugins
plugin.run(args)
File "/opt/rocks/lib/python2.4/site-packages/rocks/commands/remove/host/plugin_pxeboot.py", line 75, in run
self.owner.command('remove.host.pxeboot', [ args ])
File "/opt/rocks/lib/python2.4/site-packages/rocks/commands/__init__.py", line 1152, in command
o.runWrapper(name, args)
File "/opt/rocks/lib/python2.4/site-packages/rocks/commands/__init__.py", line 1459, in runWrapper
self.run(self._params, self._args)
File "/opt/rocks/lib/python2.4/site-packages/rocks/commands/remove/host/pxeboot/__init__.py", line 139, in run
hexstr = '%02x' % (int(i))
ValueError: invalid literal for int():
can any one help us how to remove this node from head node.
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Michael Duncan
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Mike
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hardik patel
remove entry from list.
still "rocks list host" command show compute-0-20 entry....
insert-ethers --remove compute-0-20
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Mike
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hardik patel
compute-0-21: private eth0 00:30:48:c6:6b:de 10.168.255.234 255.255.0.0 ----------- e1000 compute-0-21
compute-0-21: ------- eth1 00:30:48:c6:6b:df -------------- ----------- ----------- e1000 ---------------
compute-0-20: private ----- 00:0f:b5:89:b5:6b -------------- 255.255.0.0 ----------- ------ compute-0-20
compute-0-28: private eth0 00:30:48:c6:6b:e2 10.168.255.227 255.255.0.0 ----------- e1000 compute-0-28
compute-0-28: ------- eth1 00:30:48:c6:6b:e3 -------------- ----------- ----------- e1000 ---------------
how to remove it
insert-ethers --remove compute-0-20
------------------
Mike
Hi,
Mark Sullivan
Could this all be stemming from the Python errors given by 'rocks remove
host HOSTNAME'?
In a thread I started on Friday, I noted that, in my vanilla Rocks 5.1:
* insert-ethers --remove compute-0-20 -> didn't remove the host
* rocks remove host HOSTNAME -> gave error messages (see below)
* rocks sync config -> removed the entry from /etc/hosts but left it in
@allhosts
and thus all queues still think these hosts exist.
Here is the output I got from "rocks remove host HOSTNAME":
===========================================================
File "/opt/rocks/bin/rocks", line 226, in ?
command.runWrapper(name, args[i:])
File
"/opt/rocks/lib/python2.4/site-packages/rocks/commands/__init__.py",
line 1488, in runWrapper
self.run(self._params, self._args)
File
"/opt/rocks/lib/python2.4/site-packages/rocks/commands/remove/host/__init__.py",
line 100, in run
self.runPlugins(host)
File
"/opt/rocks/lib/python2.4/site-packages/rocks/commands/__init__.py",
line 1239, in runPlugins
plugin.run(args)
File
"/opt/rocks/lib/python2.4/site-packages/rocks/commands/remove/host/plugin_pxeaction.py",
line 78, in run
self.owner.command('remove.host.pxeaction', [ args ])
File
"/opt/rocks/lib/python2.4/site-packages/rocks/commands/__init__.py",
line 1181, in command
o.runWrapper(name, args)
File
"/opt/rocks/lib/python2.4/site-packages/rocks/commands/__init__.py",
line 1488, in runWrapper
self.run(self._params, self._args)
File
"/opt/rocks/lib/python2.4/site-packages/rocks/commands/remove/host/pxeaction/__init__.py",
line 152, in run
self.command('set.host.pxeboot', [ host ])
File
"/opt/rocks/lib/python2.4/site-packages/rocks/commands/__init__.py",
line 1181, in command
o.runWrapper(name, args)
File
"/opt/rocks/lib/python2.4/site-packages/rocks/commands/__init__.py",
line 1488, in runWrapper
self.run(self._params, self._args)
File
"/opt/rocks/lib/python2.4/site-packages/rocks/commands/set/host/pxeboot/__init__.py",
line 389, in run
(nodeid, node_os) = self.db.fetchone()
TypeError: unpack non-sequence
-Mark