批量统计redis内存使用情况

需求：

由于redis上云，需要统计一批主机上面的主机内存和redis实例内存使用情况。

#!/bin/bash

rm -rf redis_mem.log

ps -ef |grep redis-server |grep -v grep | awk '$NF~/cluster/{print $(NF-1);next}{print $NF}' |awk -F':' '{print $2}' >redis_ports

for i in `cat redis_ports`
do
   redis-cli  -p $i info > info.log
   used_mem=$(grep -w 'used_memory' info.log | awk -F':' '{print $2}' | sed 's/
//')
   max_mem=$(grep -w 'maxmemory' info.log | awk -F':' '{print $2}' | sed 's/
//')
   #role=$(grep role info.log | awk -F':' '{print $2}' | sed 's/
//')
   printf '%10s	 %10s	 %10s	
' $i $used_mem $max_mem >> redis_mem.log
done

host_total_mem=$(free -g | sed -n '2p' | awk '{print $2}')
redis_used_mem=$(cat redis_mem.log | awk '{sum+=$2}END{printf "%.2f",sum/1024/1024/1024}')
redis_max_mem=$(cat redis_mem.log | awk '{sum+=$3}END{print sum/1024/1024/1024}')
redis_host_ip=$(ip addr | grep 'state UP' -A2 | tail -n1 | awk '{print $2}' | awk -F"/" '{print $1}')
mem_used_pect=$(awk 'BEGIN{printf "%.2f%",'$redis_used_mem'/'$host_total_mem'*100}')

#printf '%20s	 %10s	 %10s	 %10s	 %10s
' 主机ip 主机物理内存 redis设置最大内存 本机redis已使用内存 redis使用内存比例 
printf '%20s	 %10s	 %10s	 %10s	 %10s
' $redis_host_ip $host_total_mem $redis_max_mem $redis_used_mem $mem_used_pect

 假设以上脚本名test1.sh,将脚本分发到需要check的主机/tmp目录下

  ansible -i test1  all -m copy -s -a "src=test1.sh dest=/tmp/test1.sh"

执行结果：ansible -i test1 all -m shell -s -a "sh /tmp/test1.sh" | grep -v 'rc' 

192.168.100.10            189            120          14.07          7.44%
192.168.100.11            189            140          16.42          8.69%
192.168.100.12            189            120          14.33          7.58%
192.168.100.13            189            120          14.31          7.57%
192.168.100.14            189            120          14.56          7.70%
192.168.100.15            189            120          14.32          7.58%
192.168.100.16            189            130          15.54          8.22%
192.168.100.17            189            130          15.76          8.34%