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231 lines
7.4 KiB
Plaintext
231 lines
7.4 KiB
Plaintext
#
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# Replication configuration
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#
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database
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{
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### PRIMARY SIDE SETTINGS
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# Plugin used to perform replication.
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# Leave it empty to use built-in replication.
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#
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# plugin =
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# Pattern (regular expression) that defines what tables must be included into
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# replication. By default, all tables are replicated.
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#
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# include_filter =
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# Pattern (regular expression) that defines what tables must be excluded from
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# replication. By default, all tables are replicated.
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#
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# exclude_filter =
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# Boolean parameters describing how replication errors must be handled.
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#
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# log_errors = true # All errors (and warnings) are written to replication.log
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# report_errors = false # Errors are returned to the client application
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# disable_on_error = true # Replication is disabled after error
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### Parameters specific for built-in replication
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# Size of the local buffer used to accumulate changes that can be
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# deferred until the transaction commit/rollback. The bigger this value
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# the less disk access concurrency (related to journal IOPS) happens.
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#
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# For synchronous replication, it also affects number of network round-trips
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# between primary and replica hosts.
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# However, a larger buffer costs a longer replication "checkpoints"
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# (delay to synchronize the original database with its replica at commit).
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#
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# buffer_size = 1048576 # 1MB
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# Directory to store replication journal files.
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#
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# journal_directory =
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# Prefix for replication journal file names. It will be automatically suffixed
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# with an ordinal sequential number. If not specified, database filename
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# (without path) is used as a prefix.
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#
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# journal_file_prefix =
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# Maximum allowed size for a single replication segment.
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#
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# journal_segment_size = 16777216 # 16MB
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# Maximum allowed number of full replication segments. Once this limit is reached,
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# the replication process is temporarily delayed to allow the archiving to catch up.
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# If any of the full segments is not archived during one minute,
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# the replication fails with an error.
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#
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# Zero means an unlimited number of segments pending archiving.
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#
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# journal_segment_count = 8
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# Delay, in milliseconds, to wait before the changes are synchronously flushed
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# to the journal (usually at commit time). This allows multiple concurrently committing
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# transactions to amortise I/O costs by sharing a single flush operation.
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#
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# Zero means no delay, i.e. "group flushing" is disabled.
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#
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# journal_group_flush_delay = 0
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# Directory for the archived journal files.
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#
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# Directory to store archived replication segments.
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# It also defines the $(archpathname) substitution macro (see below).
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#
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# journal_archive_directory =
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# Program (complete command line with arguments) that is executed when some
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# replication segment gets full and needs archiving.
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#
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# This program MUST return zero ONLY if archiving has been performed successfully.
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# In particular, it MUST return non-zero if the target archive already exists.
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#
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# Special predefined macros are available:
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# $(filename) - file name (without path) of the journal segment being archived
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# $(pathname) - full path name of the journal segment being archived
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# same as journal_directory + $(filename)
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# $(archivepathname) - suggested full path name for the archived segment
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# same as journal_archive_directory + $(filename)
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#
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# Simplest configuration is to use standard OS commands for archiving, e.g.:
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#
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# Linux: "test ! -f $(archivepathname) && cp $(pathname) $(archivepathname)"
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# or
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# Windows: "copy $(pathname) $(archivepathname)"
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#
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# journal_archive_command =
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# Timeout, in seconds, to wait until incomplete segment is scheduled for archiving.
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# It allows to minimize the replication gap if the database is modified rarely.
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#
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# Zero means no intermediate archiving, i.e. segments are archived only after
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# reaching their maximum size (defined by journal_segment_size).
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#
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# journal_archive_timeout = 60
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# Connection string to the replica database (used for synchronous replication only).
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# Expected format:
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#
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# [<login>:<password>@]<database connection string>
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#
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# Examples:
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#
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# server2:replica
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# john:smith@server2:replica
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# server2:/my/replica/database.fdb
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# john:smith@server2:/my/replica/database.fdb
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#
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# Multiple entries are allowed (for different synchronous replicas).
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#
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# sync_replica =
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#
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# It's also possible to configure replicas as separate sub-sections, e.g.:
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#
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# sync_replica = server1:replica
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# {
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# username = john
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# password = smith
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# }
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#
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# sync_replica = server2:replica
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# {
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# username = john
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# password = smith
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# }
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#
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# This way characters ':' and '@' are allowed inside username/password or database pathname.
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#
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# Alternative parameters -- username_env, password_env, username_file, password_file -- allow
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# to specify username and password externally, using either environment variables or
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# plain text files respectively, e.g.:
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#
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# sync_replica = server2:/my/replica/database.fdb
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# {
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# username_env = FB_REPL_USER
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# password_file = /opt/firebird/repl_pwd.txt
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# }
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#
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# sync_replica = server2:/my/replica/database.fdb
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# {
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# username_file = /opt/firebird/repl_user.txt
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# password_env = FB_REPL_PWD
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# }
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#
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# If username_file / password_file is specified, the first non-empty line
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# of the provided file is used as the parameter value.
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#
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# If username_file or password_file values represent a relative pathname,
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# it's resolved based on the Firebird root directory:
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#
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# password_file = repl_pwd.txt # => resolves to /opt/firebird/repl_pwd.txt
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### REPLICA SIDE SETTINGS
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# If enabled, changes applied to replica will be also subject of further
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# replication (if any configured).
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#
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# cascade_replication = false
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### Parameters specific for built-in replication
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# Directory to search for the journal files to be replicated.
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#
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# journal_source_directory =
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# Filter to limit replication to the particular source database (based on its GUID).
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# Expected format: "{XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX}"
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# Note that double quotes are mandatory, as well as curly braces.
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#
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# source_guid =
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# If enabled, replication.log contains the detailed log of operations performed
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# by the replication server. Otherwise (by default), only errors and warnings are logged.
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#
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# verbose_logging = false
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# Timeout (in seconds) to wait before scanning for the new replication segments.
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#
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# It's used to pause the replication server when all existing segments are already applied
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# to the replica database and there are no new segments in the specified directory.
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#
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# apply_idle_timeout = 10
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# Timeout (in seconds) to wait before retrying to apply the queued segments after error.
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#
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# It's used to pause the replication server after some critical error happened during replication.
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# In this case, the server disconnects from the replica database, sleeps for the specified timeout,
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# then reconnects back and tries to re-apply the latest segments from the point of failure.
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#
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# apply_error_timeout = 60
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}
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#
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# Database-specific settings belong here, e.g.
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#
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# (for the primary side)
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#
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# database = /your/db.fdb
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# {
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# (for synchronous replication)
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#
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# sync_replica = sysdba:masterkey@otherhost:/your/replica.fdb
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#
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# (for asynchronous replication)
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#
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# journal_directory = /your/db/journal
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# journal_archive_directory = /your/db/archive
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# journal_archive_timeout = 10
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# }
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#
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# (for the replica side)
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#
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# database = /your/db.fdb
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# {
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# journal_source_directory = /your/db/source
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# }
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