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Use flock to make sure only one gluster command run at a time

This commit is contained in:
Daniel Berteaud 2016-03-21 10:16:28 +01:00
parent 4b73b1f8df
commit c43bdff1a9
2 changed files with 12 additions and 0 deletions
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6
zabbix_scripts/check_gluster_sudo
View File

@ -10,12 +10,16 @@ my $peer = undef;
my $bricks = undef; my $bricks = undef;
my $gluster = which('gluster'); my $gluster = which('gluster');
my $lock = '/var/lock/gluster-zabbix.lock';
unless($gluster){ unless($gluster){
# Gluster is not installed, exit with an error # Gluster is not installed, exit with an error
die "gluster command not found"; die "gluster command not found";
} }
# Get an exclusive lock
open(LOCK, ">$lock") || die "Can't open $lock";
flock(LOCK, 2);
GetOptions( GetOptions(
"what=s" => \$what, "what=s" => \$what,
@ -150,3 +154,5 @@ elsif ($what eq 'peer'){
print $status; print $status;
} }
close(LOCK);
exit(0);

6
zabbix_scripts/disco_gluster_sudo
View File

@ -9,6 +9,7 @@ my $json;
@{$json->{data}} = (); @{$json->{data}} = ();
my $gluster = which('gluster'); my $gluster = which('gluster');
my $lock = '/var/lock/gluster-zabbix.lock';
unless($gluster){ unless($gluster){
# Gluster is not installed, just return an empty JSON object # Gluster is not installed, just return an empty JSON object
@ -16,6 +17,10 @@ unless($gluster){
exit(0); exit(0);
} }
# Get an exclusive lock
open(LOCK, ">$lock") || die "Can't open $lock";
flock(LOCK, 2);
my $what = 'volumes'; my $what = 'volumes';
GetOptions( GetOptions(
"what=s" => \$what, "what=s" => \$what,
@ -110,6 +115,7 @@ else{
exit(1); exit(1);
} }
close(LOCK);
print to_json($json); print to_json($json);
exit(0); exit(0);