Top Forums UNIX for Beginners Questions & Answers File Management: Removing of files from Server2 IF the same file is removed from Server1. Post 303041921 by Raza Ali on Saturday 7th of December 2019 06:15:07 AM
Hi RudiC,

Thank you for reverting.

Pls show how and where "SERVER-B ... will delete same".: either delete OR move to another directory.

Will all files 1 - 4 be deleted from server1 if all went well?: YES

Will they also be deleted from server2 if all went well?: YES, this is what we want to avoid duplicity(if SERVER1 goes DWON, SERVER-B will be pointed to SERVER2 and it should pick only those files which are not picked from SERVER1).

Does server-B have a list of files to copy? A list of files done and to be deleted?: NO - SERVER-B knows a directory on SERVER1 from where it will pick files and either delete it or ARCHIVE it to another directory.

SERVER-A(In fact it combination of 6 SERVERs - but not relevant to us) is generating lots of files, these files are pulled by SERVER1 and SERVER2 separately.

SERVER1 and SERVER2 are at two sites for redundancy.

SERVER-B picks files from SERVER1 and IF SERVER1 goes down it should pick files from SERVER2(but it should not pick the files already picked from SERVER1 - To avoid duplicity).

SERVER-B is another party - I need to check with them, Still please provide suggestion based on your assumption(It will delete or move to another directory).

Thank you.
Test Your Knowledge in Computers #360
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The find command first appeared in Version 4 AT&T UNIX.
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SERVER(7) PostgreSQL 9.2.7 Documentation ALTER SERVER(7) NAME
ALTER_SERVER - change the definition of a foreign server SYNOPSIS
ALTER SERVER name [ VERSION 'new_version' ] [ OPTIONS ( [ ADD | SET | DROP ] option ['value'] [, ... ] ) ] ALTER SERVER name OWNER TO new_owner ALTER SERVER name RENAME TO new_name DESCRIPTION
ALTER SERVER changes the definition of a foreign server. The first form changes the server version string or the generic options of the server (at least one clause is required). The second form changes the owner of the server. To alter the server you must be the owner of the server. Additionally to alter the owner, you must own the server and also be a direct or indirect member of the new owning role, and you must have USAGE privilege on the server's foreign-data wrapper. (Note that superusers satisfy all these criteria automatically.) PARAMETERS
name The name of an existing server. new_version New server version. OPTIONS ( [ ADD | SET | DROP ] option ['value'] [, ... ] ) Change options for the server. ADD, SET, and DROP specify the action to be performed. ADD is assumed if no operation is explicitly specified. Option names must be unique; names and values are also validated using the server's foreign-data wrapper library. new_owner The user name of the new owner of the foreign server. new_name The new name for the foreign server. EXAMPLES
Alter server foo, add connection options: ALTER SERVER foo OPTIONS (host 'foo', dbname 'foodb'); Alter server foo, change version, change host option: ALTER SERVER foo VERSION '8.4' OPTIONS (SET host 'baz'); COMPATIBILITY
ALTER SERVER conforms to ISO/IEC 9075-9 (SQL/MED). The OWNER TO and RENAME forms are PostgreSQL extensions. SEE ALSO

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