CPU 内存检查小脚本

#!/bin/bash
function echo_red () {
    local what=$*
    echo -e "\e[1;31m${what}\e[0m"
}

function echo_green () {
    local what=$*
    echo -e "\e[1;32m${what}\e[0m"
}

cpu_used=`vmstat | awk 'NR==3{print (100-$(NF-2))}'`
cpu_average=`uptime | awk '{print $(NF-2),$(NF-1),$NF}'`
mem_used=`free -h |awk 'NR==2{print int(100-($NF/$2*100))}'`

echo "CPU利用率: $cpu_used%"
echo "CPU负载: $cpu_average"
echo "内存利用率: $mem_used%"

echo "==========检查结果=========="

if [ $cpu_used -ge 60 ]
then
   echo_red "cpu利用率过大于60%,请检查."
elif [ $mem_used -ge 80 ]
then
   echo_red "内存利用率过大于80%，请检查."
else
   echo_green "CPU和内存使用率正常."
fi

#!/bin/bash
#!/usr/bin/env bash

# This script reproduces what the kubelet does
# to calculate memory.available relative to root cgroup.

# current memory usage
memory_capacity_in_kb=$(cat /proc/meminfo | grep MemTotal | awk '{print $2}')
memory_capacity_in_bytes=$((memory_capacity_in_kb * 1024))
memory_usage_in_bytes=$(cat /sys/fs/cgroup/memory/memory.usage_in_bytes)
memory_total_inactive_file=$(cat /sys/fs/cgroup/memory/memory.stat | grep total_inactive_file | awk '{print $2}')

memory_working_set=${memory_usage_in_bytes}
if [ "$memory_working_set" -lt "$memory_total_inactive_file" ];
then
    memory_working_set=0
else
    memory_working_set=$((memory_usage_in_bytes - memory_total_inactive_file))
fi

memory_available_in_bytes=$((memory_capacity_in_bytes - memory_working_set))
memory_available_in_kb=$((memory_available_in_bytes / 1024))
memory_available_in_mb=$((memory_available_in_kb / 1024))

echo "memory.capacity_in_bytes $memory_capacity_in_bytes"
echo "memory.usage_in_bytes $memory_usage_in_bytes"
echo "memory.total_inactive_file $memory_total_inactive_file"
echo "memory.working_set $memory_working_set"
echo "memory.available_in_bytes $memory_available_in_bytes"
echo "memory.available_in_kb $memory_available_in_kb"
echo "memory.available_in_mb $memory_available_in_mb"

patch

#!/bin/bash

# 使用 kubectl 获取所有命名空间中的暴露的服务及其命名空间
kubectl get expose -A | while read NAMESPACE NAME AGE; do
    # 忽略标题行
    if [[ $NAMESPACE == "NAMESPACE" ]]; then continue; fi

    # 打印当前处理的服务信息
    #echo "Patching service $NAME in namespace $NAMESPACE"

    # 使用 kubectl patch 为服务添加 finalizers
    kubectl patch expose $NAME -n $NAMESPACE -p '{"metadata":{"finalizers":["finalizers.jdos.io/expose"]}}' --type="merge"
done

打印主机信息

#!/usr/bin/env bash
#!/bin/bash
ip=`ifconfig eth0 | awk '/inet /{print $2}'`
echo "本地IP地址是:"$ip
cpu=`uptime | awk '{print $NF}'`
#awk中NF为当前行的列数，$NF是最后一列
echo "本机CPU最近15分钟的负载是:"$cpu
net_in=`ifconfig eth0 | awk '/RX p/{print $5}'`
echo "入站网卡流量为:"$net_in
net_out=`ifconfig eth0 | awk '/TX p/{print $5}'`
echo "出站网卡流量为:"$net_out
mem=`free | awk '/Mem/{print $4}'`
echo "内存剩余容量为:"$mem
disk=`df | awk '/\/$/{print $4}'`
echo "根分区剩余容量为:"$disk
user=`cat /etc/passwd |wc -l`
echo "本地账户数量为:"$user
login=`who | wc -l`
echo "当前登陆计算机的账户数量为:"$login
process=`ps aux | wc -l`
echo "当前计算机启动的进程数量为:"$process
soft=`rpm -qa | wc -l`
echo "当前计算机已安装的软件数量为:"$soft