What new or enhanced feature are you proposing?
Support for specifying console names via the hostlist expression syntax used in
pdsh et al.
What goal would this enhancement help you achieve?
The hostlist expression syntax is a better match than either globbing or regex
patterns for matching nodes in a typical cluster that share a common prefix
followed by a numerical suffix.
Please provide any additional information below.
On Tue, 2011-04-12 at 12:15pm PDT, Cameron Harr wrote:
>
> The conmen help menu mentions globbing and regex matching, and that
> indeed works. There is also the pdsh-type grouping that would be nice if
> it worked, although it might interfere with the regex matching. Assuming
> I'm not missing something, are there any plans to implement the
> pdsh-type grouping in conmen?
>
> For example, let's say I have 20 nodes: n01-n020. I can type 'conmen
> n1*' to open up consoles to n10-n19, or I can do 'conmen n1[0-6]' to
> narrow it down to n10-19 using a regex. What I'd like to do is type
> 'conmen n[10-16]' or 'conmen n[01-16]' and open consoles on those nodes,
> a la pdsh. If I try that now, it says, "ERROR: Found no matching consoles."
pdsh(1) manpage info:
HOSTLIST EXPRESSIONS
As noted in sections above pdsh accepts lists of hosts the general
form: prefix[n-m,l-k,...], where n < m and l < k, etc., as an
alternative to explicit lists of hosts. This form should not be
confused with regular expression character classes (also denoted
by ''[]''). For example, foo[19] does not represent an expression
matching foo1 or foo9, but rather represents the degenerate hostlist:
foo19.
The hostlist syntax is meant only as a convenience on clusters with
a "prefixNNN" naming convention and specification of ranges should
not be considered necessary -- this foo1,foo9 could be specified
as such, or by the hostlist foo[1,9].
Some examples of usage follow:
Run command on foo01,foo02,...,foo05
pdsh -w foo[01-05] command
Run command on foo7,foo9,foo10
pdsh -w foo[7,9-10] command
Run command on foo0,foo4,foo5
pdsh -w foo[0-5] -x foo[1-3] command
A suffix on the hostname is also supported:
Run command on foo0-eth0,foo1-eth0,foo2-eth0,foo3-eth0
pdsh -w foo[0-3]-eth0 command
As a reminder to the reader, some shells will interpret brackets
('[' and ']') for pattern matching. Depending on your shell, it may
be necessary to enclose ranged lists within quotes. For example,
in tcsh, the first example above should be executed as:
pdsh -w "foo[01-05]" command
xcat noderange(3) manpage info:
http://xcat.sourceforge.net/man3/noderange.3.html
Original issue reported on code.google.com by chris.m.dunlap on 12 Apr 2011 at 7:59
Original issue reported on code.google.com by
chris.m.dunlapon 12 Apr 2011 at 7:59