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Make MySQL uptime check account for time spent doing everything between checks.

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This commit is contained in:
Daniel Nichter
2013-06-14 15:33:27 -07:00
parent a771591815
commit 26b14588cb
1 changed files with 18 additions and 10 deletions
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28
bin/pt-agent
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@@ -5942,13 +5942,14 @@ sub run_agent {
my $new_daemon;
my $config;
my $services = {};
my $slept = 0;
while ( $_oktorun->() ) {
check_if_mysql_restarted(
Cxn => $cxn,
slept => $slept,
slept => $state->{slept} || 0,
);
my $t0 = time;
($config, $lib_dir, $new_daemon, $success) = get_config(
link => $agent->links->{config},
agent => $agent,
@@ -6028,7 +6029,8 @@ sub run_agent {
$config ? ($config->options->{'check-interval'}, 0)
: ($first_config_interval , 1) # 1=quiet
);
$slept += $config ? $config->options->{'check-interval'} : $first_config_interval;
$state->{slept} += int(time - $t0);
}
# This shouldn't happen until the service is stopped/killed.
@@ -6298,7 +6300,8 @@ sub get_services {
}
elsif ( $state->{mysql_restarted} ) {
$logger->info('Restarting services after MySQL restart');
$prev_services = {};
$prev_services = {};
$state->{slept} = 0;
delete $state->{mysql_restarted};
}
@@ -8431,8 +8434,10 @@ sub check_if_mysql_restarted {
my $uptime = $args{uptime}; # for testing
my $margin = $args{margin} || 5;
my $slept_here = 0;
if ( !$uptime ) {
$logger->info("Connecting to MySQL");
my $t0 = time;
my $e;
my $tries = 2;
my $have_mysql = 0;
@@ -8465,18 +8470,21 @@ sub check_if_mysql_restarted {
. "connection to MySQL failed: $e");
return;
}
$slept_here = int(time - $t0);
}
if ( !$state->{last_uptime} ) {
$state->{last_uptime} = $uptime;
if ( !$state->{initial_uptime} || !$slept ) {
$logger->info("MySQL uptime: $uptime");
$state->{initial_uptime} = $uptime;
delete $state->{mysql_restarted};
}
else {
my $uptime_should_be = $state->{last_uptime} + $slept;
my $mysql_restarted = $uptime > ($uptime_should_be - $margin) && $uptime < ($uptime_should_be + $margin) ? 0 : 1;
$logger->info("Last uptime: $state->{last_uptime} Interval: $slept Uptime should be: $uptime_should_be "
. "+/- ${margin}s Uptime: $uptime MySQL restarted: $mysql_restarted");
my $exepected_uptime = $state->{initial_uptime} + $slept + $slept_here;
my $mysql_restarted = $uptime > ($exepected_uptime - $margin) && $uptime < ($exepected_uptime + $margin) ? 0 : 1;
$logger->info("MySQL uptime check: initial=$state->{initial_uptime} slept=$slept expected=$exepected_uptime "
. "+/- ${margin}s actual=$uptime");
if ( $mysql_restarted ) {
$logger->warning("MySQL restarted");
$state->{mysql_restarted} = 1;
}
}