From 4547f33ddab891037b88bcf3c5bcea7fbcd7b057 Mon Sep 17 00:00:00 2001
From: Anthony Baccuet <anthony.baccuet@altux.ch>
Date: Wed, 16 Jan 2019 10:39:36 +0100
Subject: [PATCH] Add error message to extinfo

---
 plugins/mysql/mysql_slave_threads | 17 +++++++++++++++--
 1 file changed, 15 insertions(+), 2 deletions(-)

diff --git a/plugins/mysql/mysql_slave_threads b/plugins/mysql/mysql_slave_threads
index 6669c85d..47a2091d 100755
--- a/plugins/mysql/mysql_slave_threads
+++ b/plugins/mysql/mysql_slave_threads
@@ -24,6 +24,19 @@ use strict;
 my $MYSQL = $ENV{mysql} || "mysql";
 my $MYSQLOPTS = $ENV{mysqlopts} || "";
 
+my $status = `$MYSQL $MYSQLOPTS -e 'SHOW SLAVE STATUS\\G'`;
+
+my $sqlerror = "";
+my $ioerror = "";
+
+if ($status =~ /Last_SQL_Error: (.+)/) {
+  $sqlerror = $1;
+}
+if ($status =~ /Last_IO_Error: (.+)/) {
+  $ioerror = $1;
+}
+
+
 if(defined $ARGV[0] && $ARGV[0] eq 'config') {
     print <<EOC
 graph_title MySQL Slave Threads
@@ -32,18 +45,18 @@ graph_category db
 graph_args -l 0
 io.label I/O Thread
 io.critical 1:1
+io.extinfo $ioerror
 sql.label SQL Thread
 sql.critical 1:1
+sql.extinfo $sqlerror
 EOC
 ;
         exit 0;
 }
 
-my $status = `$MYSQL $MYSQLOPTS -e 'SHOW SLAVE STATUS\\G'`;
 
 $status =~ /Slave_IO_Running: (\w+)/;
 print 'io.value '.($1 eq 'Yes' ? 1 : 0)."\n";
 $status =~ /Slave_SQL_Running: (\w+)/;
 print 'sql.value '.($1 eq 'Yes' ? 1 : 0)."\n";
 
-