mysql 数据库监控

dbMonitor.sh

@@ -0,0 +1,99 @@
+#!/usr/bin/bash
+
+# os check
+# build 2021-06-16
+
+replPasswd=$1 # zabbix传参
+replUser=root
+cmdPath=/usr/bin/mysql
+slowLog=/var/log/mysql/slow.log
+slowTmp=/tmp/.slowLog
+# mysql ms monitor
+
+#1、数据库存活
+function Heartbeat() {
+	$cmdPath -u$replUser -p$replPasswd -e 'select user' &>/dev/null
+	echo $?
+}
+
+#7、主从同步情况
+function Twins() {
+	result=$($cmdPath -u$replUser -p$replPasswd -e 'show slave status\G' 2>/dev/null | grep 'Running:')
+	echo $result | grep Yes >/dev/null && s=0 || s=1 && echo $s
+}
+
+#2、增删改查次数  QPS、TPS
+function Crud() {
+	local _result _uptime
+	_uptime=$($cmdPath -N -u$replUser -p$replPasswd -e "show global status like 'Uptime'" 2>/dev/null | awk '{print $2}')
+	if [ $1 == 'QPS' ] || [ $1 == 'qps' ] || [ $1 == 'Qps' ]; then
+		_select=$($cmdPath -N -u$replUser -p$replPasswd -e "show global status like 'Com_select'" 2>/dev/null | awk '{print $2}')
+		_update=$($cmdPath -N -u$replUser -p$replPasswd -e "show global status like 'Com_update'" 2>/dev/null | awk '{print $2}')
+		_insert=$($cmdPath -N -u$replUser -p$replPasswd -e "show global status like 'Com_insert'" 2>/dev/null | awk '{print $2}')
+		_delete=$($cmdPath -N -u$replUser -p$replPasswd -e "show global status like 'Com_delete'" 2>/dev/null | awk '{print $2}')
+		_result=$(($_select + $_update + $_insert + $_delete))
+		echo "scale=5;a=${_result}/${_uptime};if (length(a)==scale(a)) print 0;print a " | bc
+	elif [ $1 == 'TPS' ] || [ $1 == 'tps' ] || [ $1 == 'Tps' ]; then
+		_commit=$($cmdPath -N -u$replUser -p$replPasswd -e "show global status like 'Com_commit'" 2>/dev/null | awk '{print $2}')
+		_rollback=$($cmdPath -N -u$replUser -p$replPasswd -e "show global status like 'Com_rollback'" 2>/dev/null | awk '{print $2}')
+		_result=$(($_commit + $_rollback))
+		echo "scale=5;a=${_result}/${_uptime};if (length(a)==scale(a)) print 0;print a " | bc
+	else
+		_result=$($cmdPath -N -u$replUser -p$replPasswd -e "show global status like 'Com_${1}'" 2>/dev/null | awk '{print $2}')
+		echo $_result
+	fi
+}
+
+#4、慢查询日志
+function SlowLog() {
+	#slowlog config my.cnf
+	#[mysqld]
+	#slow_query_log = ON
+	#slow_query_log_file = /var/log/mysql/slow.log
+	#long_query_time = 5
+	newLines=$(cat $slowLog | wc -l)
+	datetime=$(date +%y%m%d%H)
+	if [ -f $slowTmp ]; then
+		oldLines=$(cat $slowTmp)
+		diff=$(($newLines - $oldLines))
+		tail -n $diff $slowLog
+	else
+		echo -n $newLines >$slowTmp
+	fi
+	if [ $(du -s $slowLog | awk '{print $1}') -ge 2000 ]; then
+		cat $slowLog >/var/log/mysql/slow${datetime}.log && echo -n >$slowLog && echo -n 0 >$slowTmp
+	fi
+}
+
+#5、数据库最大连接数
+function Config() {
+	_result=$($cmdPath -N -u$replUser -p$replPasswd -e "show variables like \"$1\"" 2>/dev/null | awk '{print $2}')
+	echo $_result
+}
+
+#8、数据库登陆主机为%的用户
+function RemoteUser(){
+	_result=$($cmdPath -N -u$replUser -p$replPasswd -e "select User from mysql.user where Host='%';" 2>/dev/null | awk '{print $2}')
+	echo $_result
+}
+
+case $2 in
+heartbeat)
+	Heartbeat
+	;;
+crud)
+	Crud $3 # insert update delete select commit rollback qps tps
+	;;
+twins)
+	Twins
+	;;
+slowlog)
+	SlowLog
+	;;
+config)
+	Config $3 # max_connections innodb_buffer_pool_size ... 
+	;;
+*)
+	echo 999
+	;;
+esac

osMonitor.sh

@@ -35,6 +35,7 @@ function cpuLoad(){
         ;;
     15)
         uptime | awk '{print $(NF)}' | awk -F',' '{print $1}'
+        ;;
     esac
 }
 
@@ -58,6 +59,7 @@ function uptime(){
         ;;
     idle)
         echo "scale=2;a=${_idletime}/${_uptime};if (length(a)==scale(a)) print 0;print a " | bc
+        ;;
     esac
 }
 
@@ -69,6 +71,7 @@ function conns(){
         ;;
     [1-9]*)
         lsof -i:$1 | wc -l
+        ;;
     esac
 }
 
@@ -77,11 +80,12 @@ function ports(){
     local p
     case $1 in
     portList)
-        p="`ss -tnul | grep -v Netid |awk '{print $5}'|awk -F ':' '{print $NF}'|sort -n|uniq`"
+        p="$(ss -tnul | grep -v Netid | awk '{print $5}' | awk -F ':' '{print $NF}' | sort -n | uniq)"
         echo $p
         ;;
     port)
         ss -tnul | grep -v Netid | awk '{print $5}' | awk -F ':' '{print $NF}' | sort -n | uniq | wc -l
+        ;;
     esac
 }
 
@@ -90,11 +94,12 @@ function services(){
     local s
     case $1 in
     servicesList)
-        s="`ls /etc/systemd/system/multi-user.target.wants/`"
+        s="$(ls /etc/systemd/system/multi-user.target.wants/)"
         echo $s
         ;;
     service)
         ls /etc/systemd/system/multi-user.target.wants/ | wc -l
+        ;;
     esac
 }
 
@@ -133,4 +138,5 @@ Services)
     ;;
 Crontab)
     crontab $2 # user
+    ;;
 esac