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Add pg_promote function

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This function is able to promote a standby with this new SQL-callable
function.  Execution access can be granted to non-superusers so that
failover tools can observe the principle of least privilege.

Catalog version is bumped.

Author: Laurenz Albe
Reviewed-by: Michael Paquier, Masahiko Sawada
Discussion: https://postgr.es/m/6e7c79b3ec916cf49742fb8849ed17cd87aed620.camel@cybertec.at
This commit is contained in:
Michael Paquier
2018-10-25 09:46:00 +09:00
parent 0a8590b2a0
commit 10074651e3
13 changed files with 143 additions and 20 deletions
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11
src/test/recovery/t/004_timeline_switch.pl
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@ -6,7 +6,7 @@ use warnings;
use File::Path qw(rmtree);
use PostgresNode;
use TestLib;
use Test::More tests => 1;
use Test::More tests => 2;
$ENV{PGDATABASE} = 'postgres';
@ -37,9 +37,14 @@ $node_master->safe_psql('postgres',
$node_master->wait_for_catchup($node_standby_1, 'replay',
$node_master->lsn('write'));
# Stop and remove master, and promote standby 1, switching it to a new timeline
# Stop and remove master
$node_master->teardown_node;
$node_standby_1->promote;
# promote standby 1 using "pg_promote", switching it to a new timeline
my $psql_out = '';
$node_standby_1->psql('postgres', "SELECT pg_promote(wait_seconds => 300)",
stdout => \$psql_out);
is($psql_out, 't', "promotion of standby with pg_promote");
# Switch standby 2 to replay from standby 1
rmtree($node_standby_2->data_dir . '/recovery.conf');