zabbix监控redis多实例cpu mem-自动发现

1.自动发现实例端口脚本，用于zbx item prototypes

#!/bin/bash

REDIS_PORT=`ps aux |grep redis-server | grep -v 'grep'|awk -F'[:]' '{print $4}'`

COUNT=`echo "$REDIS_PORT" | wc -l`

INDEX=0

echo '{"data":['

echo "$REDIS_PORT" | while read LINE; do

    echo -n '{"{#PORTNUM}":"'$LINE'"}'

    INDEX=`expr $INDEX + 1`

    if [ $INDEX -lt $COUNT ]; then

        echo ','

    fi

done

echo ']}'

• 运行结果如下：

{"data":[

{"{#PORTNUM}":"6379"},

{"{#PORTNUM}":"6380"}]}

2.crontab周期取数脚本，每1分钟运行两次，zbx每30s取值一次

* * * * * /bin/sh /usr/local/zabbix/bin/redis_port_cron.sh

• 脚本

#!/bin/bash

# redis_port_cron.sh

# 获取CPU使用临时存储

for (( i=0;i < 2;i=(i+1)  ));do

        TMP_DATA=/tmp/redis_cpu_util_tmp.log

        DEST_DATA=/tmp/redis_cpu_util.log

        echo "REDIS_PORT CPU_percent MEM_percent MEM_GB" > $TMP_DATA

        pid_array=`ps aux |grep redis-server | grep -v 'grep' | awk '{print $2}'`

        for pid in ${pid_array[@]}

        do

                redis_port=`top -c -b -n 1 -p $pid|tail -n 2 |awk -F'[:]' 'NR==1{print $3}'`

                redis_cpu_util=`top -c -b -n 1 -p $pid | tail -2|awk 'NR==1{print $9}'`

                redis_mem_util=`top -c -b -n 1 -p $pid | tail -2|awk 'NR==1{print $10}'`

                redis_mem_MAX=`awk '($1 == "MemTotal:"){print $2/1048576}' /proc/meminfo`

                redis_mem_GB=`awk 'BEGIN{print "'$redis_mem_MAX'"*"'$redis_mem_util'"/100}'`

                echo $redis_port $redis_cpu_util $redis_mem_util $redis_mem_GB >> $TMP_DATA

        done

sleep 20

done

[ -e $TMP_DATA ]&& mv $TMP_DATA $DEST_DATA

• 运行结果如下，第一列是端口号，第二列是CPU百分比，第三列是内存百分比，将内存转换成GB：

REDIS_PORT CPU_percent MEM_percent MEM_GB

6379 0.0 0.8 0.0146658

6380 0.0 0.4 0.00733288

3.zbx传key值

#!/bin/bash

# redis_custom_check.sh

ZBX_REDIS_PORT="$1"

ZBX_REDIS_KEY="$2"

# source data file

SOURCE_DATA=/tmp/redis_cpu_util.log

# No data file to read from

if [ ! -f "$SOURCE_DATA" ]; then

  echo "NO DATA FILE FOR READ"

  exit 1

fi

# 1st check the device exists and gets data gathered by cron job

port_count=$(grep -Ec "^$ZBX_REDIS_PORT" $SOURCE_DATA)

if [ $port_count -eq 0 ]; then

  echo "NO DATA FOR READ"

  exit 1

fi

# 2nd grab the data from the source file

case $ZBX_REDIS_PORT in

  CPU_percent )	grep -E "^$ZBX_REDIS_PORT" $SOURCE_DATA |  awk '{print $2}';;

  MEM_percent )	grep -E "^$ZBX_REDIS_PORT" $SOURCE_DATA |  awk '{print $3}';;

  MEM_GB)     		grep -E "^$ZBX_REDIS_PORT" $SOURCE_DATA |  awk '{print $4}';;

  *) echo "ERROR_WRONG_PARAM"; exit 1;;

esac

exit 0

4.重启zbx agent 测试key

UserParameter=redis.port.discovery,/bin/sh /usr/local/zabbix/bin/redis_port_discovery.sh

UserParameter=redis.instance.util[*],/bin/sh /usr/local/zabbix/bin/redis_custom_check.sh $1 $2

• 测试key

zabbix_get -s 127.0.0.1 -k redis.instance.util[6379,CPU_percent]

zabbix_get -s 127.0.0.1 -k redis.instance.util[6379,MEM_GB]

zabbix_get -s 127.0.0.1 -k redis.instance.util[6379,MEM_percent]

[root@GZ-LT-DB-redis01 zabbix_agentd.conf.d]# zabbix_get -s 127.0.0.1 -k redis.instance.util[6379,CPU_percent]

0.0

[root@GZ-LT-DB-redis01 zabbix_agentd.conf.d]# zabbix_get -s 127.0.0.1 -k redis.instance.util[6379,MEM_GB]

0.0146658

[root@GZ-LT-DB-redis01 zabbix_agentd.conf.d]# zabbix_get -s 127.0.0.1 -k redis.instance.util[6379,MEM_percent]

0.8

5.建item和图形