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Change default values for backup and replication parameters

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This changes the default values of the following parameters:

wal_level = replica
max_wal_senders = 10
max_replication_slots = 10

in order to make it possible to make a backup and set up simple
replication on the default settings, without requiring a system restart.

Discussion: https://postgr.es/m/CABUevEy4PR_EAvZEzsbF5s+V0eEvw7shJ2t-AUwbHOjT+yRb3A@mail.gmail.com

Reviewed by Peter Eisentraut. Benchmark help from Tomas Vondra.
This commit is contained in:
Magnus Hagander
2017-01-14 17:14:56 +01:00
parent 05cd12ed5b
commit f6d6d2920d
9 changed files with 21 additions and 20 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
src/backend/utils/misc/guc.c
View File

@ -2315,7 +2315,7 @@ static struct config_int ConfigureNamesInt[] =
NULL
},
&max_wal_senders,
0, 0, MAX_BACKENDS,
10, 0, MAX_BACKENDS,
NULL, NULL, NULL
},
@ -2326,7 +2326,7 @@ static struct config_int ConfigureNamesInt[] =
NULL
},
&max_replication_slots,
0, 0, MAX_BACKENDS /* XXX? */ ,
10, 0, MAX_BACKENDS /* XXX? */ ,
NULL, NULL, NULL
},
@ -3749,7 +3749,7 @@ static struct config_enum ConfigureNamesEnum[] =
NULL
},
&wal_level,
WAL_LEVEL_MINIMAL, wal_level_options,
WAL_LEVEL_REPLICA, wal_level_options,
NULL, NULL, NULL
},

6
src/backend/utils/misc/postgresql.conf.sample
View File

@ -174,7 +174,7 @@
# - Settings -
#wal_level = minimal # minimal, replica, or logical
#wal_level = replica # minimal, replica, or logical
# (change requires restart)
#fsync = on # flush data to disk for crash safety
# (turning this off can cause
@ -229,12 +229,12 @@
# Set these on the master and on any standby that will send replication data.
#max_wal_senders = 0 # max number of walsender processes
#max_wal_senders = 10 # max number of walsender processes
# (change requires restart)
#wal_keep_segments = 0 # in logfile segments, 16MB each; 0 disables
#wal_sender_timeout = 60s # in milliseconds; 0 disables
#max_replication_slots = 0 # max number of replication slots
#max_replication_slots = 10 # max number of replication slots
# (change requires restart)
#track_commit_timestamp = off # collect timestamp of transaction commit
# (change requires restart)

1
src/test/modules/commit_ts/t/002_standby.pl
View File

@ -15,7 +15,6 @@ $master->append_conf(
'postgresql.conf', qq{
track_commit_timestamp = on
max_wal_senders = 5
wal_level = hot_standby
});
$master->start;
$master->backup($bkplabel);

1
src/test/modules/commit_ts/t/003_standby_2.pl
View File

@ -14,7 +14,6 @@ $master->append_conf(
'postgresql.conf', qq{
track_commit_timestamp = on
max_wal_senders = 5
wal_level = hot_standby
});
$master->start;
$master->backup($bkplabel);

6
src/test/perl/PostgresNode.pm
View File

@ -415,7 +415,6 @@ sub init
if ($params{allows_streaming})
{
print $conf "wal_level = replica\n";
print $conf "max_wal_senders = 5\n";
print $conf "wal_keep_segments = 20\n";
print $conf "max_wal_size = 128MB\n";
@ -424,6 +423,11 @@ sub init
print $conf "hot_standby = on\n";
print $conf "max_connections = 10\n";
}
else
{
print $conf "wal_level = minimal\n";
print $conf "max_wal_senders = 0\n";
}
if ($TestLib::windows_os)
{

1
src/test/recovery/t/006_logical_decoding.pl
View File

@ -10,7 +10,6 @@ my $node_master = get_new_node('master');
$node_master->init(allows_streaming => 1);
$node_master->append_conf(
'postgresql.conf', qq(
max_replication_slots = 4
wal_level = logical
));
$node_master->start;

1
src/test/recovery/t/008_fsm_truncation.pl
View File

@ -14,7 +14,6 @@ $node_master->init(allows_streaming => 1);
$node_master->append_conf('postgresql.conf', qq{
fsync = on
wal_level = replica
wal_log_hints = on
max_prepared_transactions = 5
autovacuum = off