restoring mksysb backup of a clustered server configured in HACMP


 
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Operating Systems AIX restoring mksysb backup of a clustered server configured in HACMP
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Old 06-21-2011
restoring mksysb backup of a clustered server configured in HACMP

Hi,

I have done NIM restoration via nim_bosinst a lot of times but I have some doubts on restoring a server which is clustered specifically HACMP. Previously, I don't know the trend but after doing a nim_bosinst, I can see the client's hostname is back to "localhost" rather than its original hostname and that there is no ip address configured. That means you need to set its IP address and hostname.

But in some cases, I do successfully restore a backup image containing its original hostname and its IP address is automatically configured. Does anyone knows how this thing happen? I am thinking it has something to do with the option "Remain NIM client after resource" and "Preserve NIM definitions for resources".

Also, for HACMP clustered system, in which it has configured a persistent IP. If you try to restore a mksysb image using NIM, will it flush out the persistent IP and you need to configure it back and at the same time do a sync and verify?
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CLUSTERDB(1)						  PostgreSQL Client Applications					      CLUSTERDB(1)

NAME
clusterdb - cluster a PostgreSQL database SYNOPSIS
clusterdb [ connection-option... ] [ [ --verbose ] [ -v ] ] [ --table | -t table ] [ dbname ] clusterdb [ connection-option... ] [ [ --all ] [ -a ] ] [ [ --verbose ] [ -v ] ] DESCRIPTION
clusterdb is a utility for reclustering tables in a PostgreSQL database. It finds tables that have previously been clustered, and clusters them again on the same index that was last used. Tables that have never been clustered are not affected. clusterdb is a wrapper around the SQL command CLUSTER [cluster(7)]. There is no effective difference between clustering databases via this utility and via other methods for accessing the server. OPTIONS
clusterdb accepts the following command-line arguments: -a --all Cluster all databases. [-d] dbname [--dbname] dbname Specifies the name of the database to be clustered. If this is not specified and -a (or --all) is not used, the database name is read from the environment variable PGDATABASE. If that is not set, the user name specified for the connection is used. -e --echo Echo the commands that clusterdb generates and sends to the server. -q --quiet Do not display progress messages. -t table --table table Cluster table only. -v --verbose Print detailed information during processing. clusterdb also accepts the following command-line arguments for connection parameters: -h host --host host Specifies the host name of the machine on which the server is running. If the value begins with a slash, it is used as the directory for the Unix domain socket. -p port --port port Specifies the TCP port or local Unix domain socket file extension on which the server is listening for connections. -U username --username username User name to connect as. -w --no-password Never issue a password prompt. If the server requires password authentication and a password is not available by other means such as a .pgpass file, the connection attempt will fail. This option can be useful in batch jobs and scripts where no user is present to enter a password. -W --password Force clusterdb to prompt for a password before connecting to a database. This option is never essential, since clusterdb will automatically prompt for a password if the server demands password authentica- tion. However, clusterdb will waste a connection attempt finding out that the server wants a password. In some cases it is worth typing -W to avoid the extra connection attempt. ENVIRONMENT
PGDATABASE PGHOST PGPORT PGUSER Default connection parameters This utility, like most other PostgreSQL utilities, also uses the environment variables supported by libpq (see in the documentation). DIAGNOSTICS
In case of difficulty, see CLUSTER [cluster(7)] and psql(1) for discussions of potential problems and error messages. The database server must be running at the targeted host. Also, any default connection settings and environment variables used by the libpq front-end library will apply. EXAMPLES
To cluster the database test: $ clusterdb test To cluster a single table foo in a database named xyzzy: $ clusterdb --table foo xyzzy SEE ALSO
CLUSTER [cluster(7)] Application 2010-05-14 CLUSTERDB(1)

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