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Operating Systems AIX IBM TDS/SDS (LDAP) - can I mix endianness among servers in an instance ? Post 303039487 by maraixadm on Monday 7th of October 2019 06:07:12 PM
Old 10-07-2019
IBM TDS/SDS (LDAP) - can I mix endianness among servers in an instance ?

I'd like to add some x/linux-based servers to my current AIX-based TDS/SDS server community. Reading the Fine Install Guide (rtfig ?) I believe this may be covered by the section "Upgrade an instance of a previous version to a different computer" i.e. I'm going to install latest/greatest SDS on a new server image, then bring in the instance data from one of my current servers.

The chart in that section of the Install Guide indicates this is only possible among systems with the same endianness.

Is it possible to have Intel & power servers cooperating on the same directory ? If so, can someone pls point me to doc on how to get there ?

Much appreciated !

[edit:] more reading. I see in the section "creating a copy of an existing instance" the same requirement that only data from a source with the same endianness as the target can be used.

So: can I create an instance copy without data, then (quiesce replication and suspend my servers and) dump the directory to an LDIF, and load the new instance from that instead of from a backup ? Then ensuring that replication is prepared on the new copy and then spinning up the whole pile ? The crux being that by importing the data as text rather than binary, I avoid the fact that handling of endianness/network byte order is missing from the deploy tools ?

Same question as above though, crudely, does replication handle network byte order correctly and swap data nice between different endiannesses ?

Last edited by maraixadm; 10-08-2019 at 12:28 AM..
 

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DB2LDIF(8)						      System Manager's Manual							DB2LDIF(8)

NAME
db2ldif - Directory Server script for exporting the database SYNOPSIS
db2ldif [-Z serverID] {-n backend_instance}* | {-s includeSuffix}* [{-x excludeSuffix}*] [-a outputFile] [-m] [-M] [-r] [-u] [-U] [-C] [-N] [-E] [-1] [-q] [-h] DESCRIPTION
Exports the contents of the database to a LDIF file. This script can be executed while the server is still running, except when using the -r option. OPTIONS
A summary of options is included below: -Z Server Identifier The server ID of the Directory Server instance. If there is only one instance on the system, this option can be skipped. -n Backend Name The name of the LDBM database to reindex. Example: userRoot -s includeSuffix Specifies suffixes to be included in the LDIF file. -x excludeSuffix Specifies suffixes to be excluded from the LDIF file. -a Output File The name for the LDIF file. -m Minimize the base64 encodings in the exported LDIF file. -M Exported ldif is stored in multiple files. These files are named : <instance>_<filename> By default, all instances are stored in the filename specified by the -a option. -r Export replication data(information required to initialize a replica when the LDIF is imported). -u Do not export the unique-id attribute. -U Requests that the output LDIF is not folded. -C Uses only the main database file. -N Suppress printing sequential number -E Decrypts any encrypted data during export. -1 Deletes, for reasons of backward compatibility, the first line of the LDIF file that gives the version of the LDIF standard. -q Quiet mode. Suppresses output of the script. -h Display the usage. EXAMPLE
db2ldif -Z instance3 -n userRoot -a /LDAP/ldif/export.ldif db2ldif -s 'dc=example,dc=com' -a /LDAP/ldif/export.ldif -m -E -q DIAGNOSTICS
Exit status is zero if no errors occur. Errors result in a non-zero exit status and a diagnostic message being written to standard error. AUTHOR
db2ldif was written by the 389 Project. REPORTING BUGS
Report bugs to http://bugzilla.redhat.com. COPYRIGHT
Copyright (C) 2013 Red Hat, Inc. Mar 5, 2013 DB2LDIF(8)
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