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Detect if a mysql slave is still running and touch slave_running, monit then watches the timestamp on the file
check file slave_running with path /opt/slave_running
if timestamp > 3 minutes then alert
MYSQL=`mysql --defaults-file=/etc/mysql/debian.cnf -e "SHOW SLAVE STATUS \G"`
IO=`echo "$MYSQL" | grep 'Slave_IO_Running:' | awk '{print $2}'`
SQL=`echo "$MYSQL" | grep 'Slave_SQL_Running:' | awk '{print $2}'`
if [ "Yes" == "$IO" ] && [ "Yes" == "$SQL" ]; then
touch /opt/slave_running
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