节点request资源统计脚本

#!/bin/bash

for node in `kubectl get node | grep node | awk '{print $1}'` 
do
    total_cpu=`kubectl describe node $node | grep cpu | awk '{print $2}' | sed -n '1p'`
    used_cpuM=`kubectl describe node $node | grep "cpu " | awk '{print $2}'| cut -d 'm' -f 1`
    used_cpu=`expr $used_cpuM / 1024`
    used_cpu_ratio=`kubectl describe node $node | grep "cpu " | awk '{print $3}'`

    total_memK=`kubectl describe node $node | grep " memory:" | awk '{print $2}' | sed -n '1p' | cut -d 'K' -f 1`
    total_mem=`expr $total_memK / 1024 / 1024`
    used_memMm=`kubectl describe node $node | grep " memory  " | awk '{print $2}'`

    Mm=`echo $used_memMm | grep M | wc -l`
    if [ $Mm == 0 ];then
        if [ `echo $used_memMm | grep m | wc -l` == 0 ];then
            used_mem=`expr $used_memMm / 1024 / 1024 / 1024`
        else
            used_mem_Mm=`echo $used_memMm | cut -d 'm' -f 1`
            used_mem=`expr $used_mem_Mm / 1024 / 1024 / 1024 / 1024`
        fi
    else
        used_mem_Mm=`echo $used_memMm | cut -d 'M' -f 1`
        used_mem=`expr $used_mem_Mm / 1024`
    fi
    used_mem_ratio=`kubectl describe node $node | grep " memory  " | awk '{print $3}'`

    echo "--------"
    echo "$node"
    echo "cpu:  [ total:$total_cpu ] [ used:$used_cpu $used_cpu_ratio ]"
    echo "mem:  [ total:$total_mem ] [ used:$used_mem $used_mem_ratio ]"
done