6330c7b0ef
git-svn-id: https://svn.code.sf.net/p/xcat/code/xcat-core/branches/2.7@12303 8638fb3e-16cb-4fca-ae20-7b5d299a9bcd
117 lines
2.5 KiB
Plaintext
117 lines
2.5 KiB
Plaintext
=head1 NAME
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B<nodech> - Changes nodes' attributes in the xCAT cluster database.
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=head1 SYNOPSIS
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B<nodech> I<noderange> I<table.column=value> [I<...>]
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B<nodech> {B<-d> | B<--delete>} I<noderange> I<table> [I<...>]
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B<nodech> {B<-v> | B<--version>}
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B<nodech> [B<-?> | B<-h> | B<--help>]
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=head1 DESCRIPTION
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The nodech command changes the specified attributes for the given nodes. Normally, the given
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value will completely replace the current attribute value. But if ",=" is used instead of "=",
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the specified value will be prepended to the attribute's comma separated list, if it is not already
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there. If "^=" is used, the specified value will be removed from the attribute's comma separated list,
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if it is there. You can also use "^=" and ",=" in the same command to essentially replace one item
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in the list with another. (See the Examples section.)
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Additionally, as in nodels, boolean expressions can be used to further limit the scope of nodech from
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the given noderange. The operators supported are the same as nodels (=~, !~, ==, and !=).
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With these operators in mind, the unambiguous assignment operator is '=@'. If you need, for example, to set
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the nodelist.comments to =foo, you would have to do I<nodech n1 nodelist.comments=@=foo>.
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See the B<xcatdb> man page for an overview of each table.
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The nodech command also supports some short cut names as aliases to common attributes. See the
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B<nodels> man page for details.
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=head1 OPTIONS
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=over 10
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=item B<-d|--delete>
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Delete the nodes' row in the specified tables.
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=item B<-v|--version>
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Command Version.
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=item B<-?|-h|--help>
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Display usage message.
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=back
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=head1 RETURN VALUE
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=over 3
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=item 0
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The command completed successfully.
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=item 1
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An error has occurred.
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=back
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=head1 EXAMPLES
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=over 2
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=item *
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To update nodes in noderange node1-node4 to be in only group all:
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B<nodech> I<node1-node4 groups=all>
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=item *
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To put all nodes with nodepos.rack value of 2 into a group called rack2:
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B<nodech> I<all> nodepos.rack==2 groups,=rack2
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=item *
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To add nodes in noderange node1-node4 to the nodetype table with os=rhel5:
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B<nodech> I<node1-node4 groups=all,rhel5 nodetype.os=rhel5>
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=item *
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To add node1-node4 to group1 in addition to the groups they are already in:
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B<nodech> I<node1-node4 groups,=group1>
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=item *
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To put node1-node4 in group2, instead of group1:
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B<nodech> I<node1-node4 groups^=group1 groups,=group2>
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=back
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=head1 FILES
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/opt/xcat/bin/nodech
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=head1 SEE ALSO
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L<nodels(1)|nodels.1>, L<nodeadd(8)|nodeadd.8>, L<noderange(3)|noderange.3>
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