11-20-2018
Ok, well incorporating those couple of things (I'm still using cat. I like cat. I have one!) does make a difference, it now loops for two nodes, it resets at least one of them, them closes my ssh to the header machine.
Just before my session is closed the error tcserror: Input/output error is thrown.
I have since tried nohup and disown, these do similar, they run for a couple of loops then just end.
I should add at this point I've checked and checked, there is no problem with my nodes file. So I continue to be confused.
The problem surely is I want to explicitly ignore "Connection lost', not an error. Connection lost isn't an error, is a loss of connection, it's not a return from the command.
So, now I'm very confused.
EDIT: pssh manages fine which is a python script, so it must be possible with bash surely?
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LEARN ABOUT PHP
db2_close
DB2_CLOSE(3) 1 DB2_CLOSE(3)
db2_close - Closes a database connection
SYNOPSIS
bool db2_close (resource $connection)
DESCRIPTION
This function closes a DB2 client connection created with db2_connect(3) and returns the corresponding resources to the database server.
If you attempt to close a persistent DB2 client connection created with db2_pconnect(3), the close request is ignored and the persistent
DB2 client connection remains available for the next caller.
PARAMETERS
o $connection
- Specifies an active DB2 client connection.
RETURN VALUES
Returns TRUE on success or FALSE on failure.
EXAMPLES
Example #1
Closing a connection
The following example demonstrates a successful attempt to close a connection to an IBM DB2, Cloudscape, or Apache Derby database.
<?php
$conn = db2_connect('SAMPLE', 'db2inst1', 'ibmdb2');
$rc = db2_close($conn);
if ($rc) {
echo "Connection was successfully closed.";
}
?>
The above example will output:
Connection was successfully closed.
SEE ALSO
db2_connect(3), db2_pclose(3), db2_pconnect(3).
PHP Documentation Group DB2_CLOSE(3)