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Hot standby delay check recovery to recovery #210

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Hot standby delay check recovery to recovery #210

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11 changes: 10 additions & 1 deletion check_postgres.pl
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Original file line number Diff line number Diff line change
Expand Up @@ -5634,7 +5634,7 @@ sub check_hot_standby_delay {
}

# check if master and slave comply with the check using pg_is_in_recovery()
my ($master, $slave);
my ($master, $slave, $is_all_recovery);
$SQL = q{SELECT pg_is_in_recovery() AS recovery;};

# Check if master is online (e.g. really a master)
Expand Down Expand Up @@ -5663,6 +5663,12 @@ sub check_hot_standby_delay {
$slave = 2;
}

## If no master detected, assume 1 is master is replicating to 2. The master can also be in recovery mode.
if (! defined $master) {
$master = 1;
$is_all_recovery = 1;
}

## Get xlog positions
my ($moffset, $s_rec_offset, $s_rep_offset, $time_delta);

Expand Down Expand Up @@ -5704,6 +5710,9 @@ sub check_hot_standby_delay {
## On master
if ($version >= 10) {
$SQL = q{SELECT pg_current_wal_lsn() AS location};
if ($is_all_recovery) {
$SQL = q{SELECT pg_last_wal_replay_lsn() AS location};
}
}
else {
$SQL = q{SELECT pg_current_xlog_location() AS location};
Expand Down