This functionality is intended for those cases where a cascading replication
cluster is being automatically provisioned and it might be necessary to
clone multiple levels in parallel.
As always, use of `--force` implies you know what you are doing.
When executing `repmgr standby clone`, this enables the primary_conninfo
string set in recovery.conf to be explictly defined (rather than generated
from the upstream node's conninfo string and connection parameters).
This is primarily intended for those cases when an L2 cascaded standby
is being cloned from the cluster primary, and its intended upstream
might not yet be available.
Previously providing a parameter which requires a value (e.g. -f/--config-file)
would result in a misleading error like "Unknown option -f".
Rather than suppress getopt's error messages, we'll rely on these to inform
about missing required values or unknown options (as other PostgreSQL tools
do), though we will still provide our own list of command line errors and
warnings countered above and beyond getopt's sanity checks.
Remove any non-repmgrd specific items.
parse_config() already sanity-checks the values so no need to
recheck. Refactor parse_config() so when called by reload_config()
it won't exit if errors are encountered.
When checking the new standby's record in pg_stat_replication, keep
polling until the expected status is reported, and only give up
after a timeout was exceeded.
Previously repmgr would report an error if status was "startup",
even though this is not a problem.
In Barman mode the data directory is created early containing a temporary
directory needed to hold temporary files while cloning from the Barman
server. In other modes we might not know the data directory location until
connecting to the source server, so its creation happens later. In Barman
mode ensure that step is skipped.
Place elements in a sensible order and split the associated initializer
macro over multiple lines for easier editing.
Also move a few related global variables into to the structure to keep
everything in the same place.
