=head1 NAME

B<updatenode> - Update nodes in an xCAT cluster environment.

=head1 SYNOPSIS

B<updatenode> I<noderange> [B<-V>|B<--verbose>] [B<-F>|B<--sync>] [B<-S>|B<--sw>] [B<-P>|B<--scripts> [I<script1,script2...>]] 

B<updatenode> I<noderange> [B<-V>|B<--verbose>] [I<script1,script2...>]

B<updatenode> [B<-h>|B<--help>|B<-v>|B<--version>]

=head1 DESCRIPTION

The updatenode command is run on the xCAT management node and can be used
to perform the following node updates:

=over 3

=item 1

Distribute and synchronize files.  

=item 2

Install or update software on diskfull nodes.

=item 3

Run postscripts.

=back

The default behavior of updatenode will be to attempt to perform all three
types of updates.  If you wish to limit updatenode to one or two specific 
actions you can use combinations of the "-S", "-P", and "-F" flags.

For example, If you just want to synchronize configuration file you could
specify the "-F" flag.   If you want to synchronize files and update 
software you would specify the "-F" and "-S" flags. See the descriptions 
of these flags and examples below.

Note: In a large cluster environment the updating of nodes in an ad hoc 
manner can quickly get out of hand, leaving the system administrator with 
a very confusing environment to deal with. The updatenode command is 
designed to encourage users to handle cluster updates in a manner that 
is recorded and easily repeatable.  If you are not concerned about the 
structure the updatenode command provides you can use other xCAT support
such as xdsh and xdcp to accomplish these update tasks.

=head2 To distribute and synchronize files

The basic process for distributing and synchronizing nodes is:

=over 3

=item *

Create a synclist file.

=item *

Indicate the location of the synclist file.

=item *

Run the updatenode command to update the nodes.

=back

Files may be distributed and synchronized for both diskless and 
diskfull nodes.  However, since some filesystems are mounted 
read-only on AIX diskless nodes it my not be possible to update all 
files on AIX systems.  For example, any files under /usr on AIX 
diskless nodes cannot be updated.

More information on using the  synchronization file function is in  
"xCAT2SyncFilesHowTo.pdf".

=head3 Create the synclist file

The synclist file contains the configuration entries that specify 
where the files should be synced to. In the synclist file, each 
line is an entry which describes the location of the source files 
and the destination location for the files on the target node. 

The basic entry format looks like following:

  path_of_src_file1  -> path_of_dst_file1
  path_of_src_file1  path_of_src_file2 ... -> path_of_dst_directory

The path_of_src_file* should be the full path of the source file 
on the Management Node.
The path_of_dst_file* should be the full path of the destination 
file on target node.
The path_of_dst_directory should be the full path of the destination directory.
Since the synclist file is for common purpose, the target node 
need not be configured in it, it will be the noderange input to 
updatenode. 

The following formats are supported:

=over 3

=item 1

sync file /etc/file1 to the file /etc/file1 on the node with 
the same file name. Note with one file, full path to file 
must be provide.

  /etc/file1 -> /etc/file1

=item 2

sync file /etc/file2 to the file /etc/file3 on the node (with 
different file name)

  /etc/file2 -> /etc/file3

=item 3

sync file /etc/file2 to the file /etc/tmp/file3 on the node  
with different file name, different directory)
If the directory does not exist, it will be created.

  /etc/file2 -> /etc/tmp/file3

=item 4

sync the multiple files /etc/file1, /etc/file2,  /etc/file3, 
... to the directory /tmp/etc (/tmp/etc must be a directory when 
multiple files are sync'd at one time).  If the directory does 
not exist, xdcp will create it.

  /etc/file1 /etc/file2 /etc/file3 -> /tmp/etc

=back

=head3 Indicate the location of the synclist file

For Linux nodes, the path of the synclist should be following format:

   /install/custom/<inst_type>/<distro>/<profile>.<os>.<arch>.synclist
 
where:

     <inst_type>: "install", "netboot"
     <distro>: "rh", "centos", "fedora", "sles"
     <profile>,<os> and <arch> are what you set for the node

For AIX nodes, add a full path of the synclist file to the "synclists" 
attribute base on the xCAT osimage name used by the node 
in the osimage table. 

  chdef -t osimage -o myosimage synclists=/mydir/syncfile1

=head3 Run updatenode to synchronize the files
        
  updatenode <noderange> -F


=head2 To install or update software (only available on Linux Nodes)

The basic process for updating software on a node is:

=over 3

=item *

Copy the software to a directory.

=item *

Create a record of what software to install.

=item *

Run the updatenode command to update the nodes.

=back

On Linux systems, to install additional software for Linux nodes:

=over 3

=item 1

Copy the extra rpms you are going to add on to

  /install/post/otherpkgs/<os>/<arch>/
 
 where <os> and <arch> are defined in the <nodetype> table.

=item 2

Add rpm names (without version number) into

  /install/custom/<inst_type>/<ostype>/<profile>.<os>.<arch>.otherpkgs.pkglist

In the file path, the <inst_type> should be "install" if the
node was installed in diskfull state, otherwise it should be 
"netboot" if it was installed in diskless state.
<ostype> is the operating system name without the version
number.The following <ostype> are recognized by xCAT:

=over 1

=item centos

=item fedora

=item rh

=item sles

=item windows

=back

In the file name, the <profile>, <os>, <arch> are defined in
the <nodetype> table. And the <os> and <arch> fields can be
ignored if the pkglist file is available just depend on the 
<profile> attribute.

=item 3

Type:

  updatenode <noderange> -S

=back

=head2 To run postscripts

The scripts must be copied to the /install/postscripts 
directory on the xCAT management node. (Make sure they are 
executable.)

To run scripts on a node you must either specify them on the 
command line or you must add them to the "postscripts" attribute 
for the node.  

To set the postscripts attribute of the node (or group) 
definition you can use the xCAT chdef command. Set the value to 
be a comma separated list of the scripts that you want to be 
executed on the nodes. The order of the scripts in the list 
determines the order in which they will be run.  You could also set
the postscripts value by directly editing the xCAT "postscripts" 
database table using the xCAT tabedit command.

Scripts may be run on both diskless and diskfull nodes.

To run all the customization scripts that have been designated 
for the nodes, (in the "postscripts" attribute), type:

  updatenode <noderange> -P

To run the "syslog" script for the nodes, type:

  updatenode <noderange> -P syslog

To run  a list of scripts, type:

  updatenode <noderange> -P script1,script2

The flag '-P' can be omitted when only postscripts parameters are
specified.

Note: script1,script2 may or may not be designated as scripts to 
automatically run on the node. However, if you want script1 and 
script2 to get invoked next time the nodes are deployed then make sure 
to add them to the "postscripts" attribute in the database for the nodes. 

=head1 PARAMETERS

=over 10

=item I<noderange>

A set of comma delimited xCAT node names
and/or group names. See the xCAT "noderange"
man page for details on additional supported 
formats.

=item I<script1,script2...>

A comma-separated list of script names. 
The scripts must be executable and copied 
to the /install/postscripts directory.

=back

=head1 OPTIONS

=over 10

=item -F|--sync

Specifies the file synchronization should be
performed on the nodes.  rsync and ssh must
be installed and configured on the nodes. 

=item -h|--help

Display usage message.

=item -P|--scripts

Specifies that postscripts should be run on the nodes.

=item -S|--sw

Specifies that node software should be updated.

=item -v|--version

Command Version.

=item -V|--verbose

Verbose mode.

=back

=head1 RETURN VALUE

0  The command completed successfully.

1  An error has occurred.


=head1 EXAMPLES

=over 3

=item 1

To perform all updatenode features for the Linux nodes in the group
"compute":

  updatenode compute

The command will: run any scripts listed in the nodes "postscripts" 
attribute, install or update any software indicated in the 
/install/custom/install/<ostype>/profile.otherpkgs.pkglist (refer to the 
B<To install or update software part>), synchronize any files indicated by 
the synclist files specified in the osimage "synclists" attribute.

=item 2

To perform a software update and file synchronization only on the node
"clstrn01":

  updatenode clstrn01 -F -P

=item 3

To run the postscripts which indicated in the postscripts attribute on 
the node "clstrn01":

  updatenode  clstrn01 -P

=item 4

To run the postscripts script1 and script2 on the node "clstrn01":

  cp script1,script2 /install/postscripts
  updatenode clstrn01 -P script1,script2

Since flag '-P' can be omitted when only postscripts parameters are specified, 
the following command is equivalent:

  updatenode clstrn01 script1,script2

=item 5

To synchronize the files on the node "clstrn01":  Prepare the synclist file. 
For AIX, set the full path of synclist in the osimage table synclists 
attribute. For Linux, put the synclist file into the location: 
/install/custom/<inst_type>/<distro>/<profile>.<os>.<arch>.synclist
Then:

  updatenode  clstrn01 -F

=item 6

To perform the software update on the Linux node "clstrn01":  Copy the extra 
rpm into the /install/post/otherpkgs/<os>/<arch>/* and add the rpm names into 
the /install/custom/install/<ostype>/profile.otherpkgs.pkglist .  Then:

  updatenode clstrn01 -S

=back

=head1 FILES

/opt/xcat/bin/updatenode