项目实战_收集系统信息
脚本目的
收集系统信息，用于分析系统资源性能瓶颈
脚本功能
1.查看CPU利用率与负载(top、vmstat、sar)
2.查看磁盘、Inode利用率与I/O负载(df、iostst、iotop、sar、dstat)
3.查看内存利用率(free、vmstat)
4.查看TCP连接状态(netstat、ss)
5.查看CPU与内存占用最高的10个进程(top、ps)
6,查看网络流量(ifconfig、iftop、iptraf)
脚本内容
#!/bin/bash
#show system information
# 定义提示符
PS3="Your choice is: "
os_check(){
# 获取包的安装方式
if [ -e /etc/redhat-release ]; then
# REDHAD=`cat /etc/redhat-release | cut -d' ' -f1`
REDHAT=`cat /etc/redhat-release | awk '{print $1}'`
else
DEBIAN=`cat /etc/issue | cut -d' ' -f1`
fi
if [ "${REDHAT}" == "CentOS" -o "${REDHAT}" == "Red" ]; then
P_M=yum
elif [ "${DEBIAN}" == "Ubuntu" -o "${DEBIAN}" == "ubuntu" ]; then
P_M=apt-get
else
echo "Operating system doen not support."
exit 1
fi
}
# 检查当前登录用户是否root
if [ ${LOGNAME} != root ]; then
echo "Please use the root account operation."
exit 1
fi
# 检查命令是否安装
if ! which vmstat &>/dev/null; then
echo "vmstat command not found,now the install."
sleep 1
os_check
${P_M} install procps -y
echo "-----------------------------------------------------------------"
fi
if ! which iostat &>/dev/null; then
echo "vmstat command not found,now the install."
sleep 1
os_check
${P_M} install sysstat -y
echo "-----------------------------------------------------------------"
fi
if ! which ifconfig &>/dev/null; then
echo "ifconfig command not found,now the install."
sleep 1
os_check
${P_M} install net-tools -y
echo "-----------------------------------------------------------------"
fi
while true
do
select input in cpu_load disk_load disk_use disk_inode mem_use tcp_status cpu_top10 mem_top10 traffic quit
do
case ${input} in
cpu_load)
# cpu利用率与负载
echo "-----------------------------------------"
i=1
while [[ $i -lt 3 ]]
do
echo -e "\033[32m 参考值${i}\033[0m"
UTIL=`vmstat | awk '{if(NR==3){print 100-$(NF-2)"%"}}'`
USER=`vmstat | awk '{if(NR==3){print $(NF-4)"%"}}'`
SYS=`vmstat | awk '{if(NR==3){print $(NF-3)"%"}}'`
IOWAIT=`vmstat | awk '{if(NR==3){print $(NF-1)"%"}}'`
echo "Util: ${UTIL}"
echo "user use: ${USER}"
echo "System use: ${SYS}"
echo "I/O wait: ${IOWAIT}"
let i++
sleep 1
done
echo "-----------------------------------------"
break
;;
disk_load)
#硬盘I/O负载
echo "-----------------------------------------"
i=1
while [[ $i -lt 3 ]]
do
echo -e "\033[32m 参考值${i}\033[0m"
UTIL=`iostat -x -k | awk '/^[v|s]/{OFS=": ";print $1,$NF"%"}'`
READ=`iostat -x -k | awk '/^[v|s]/{OFS=": ";print $1,$6"KB"}'`
WRITE=`iostat -x -k | awk '/^[v|s]/{OFS=": ";print $1,$7"KB"}'`
IOWAIT=`vmstat | awk '{if(NR==3){print $(NF-1)"%"}}'`
echo -e "Util:"
echo -e "${UTIL}"
echo -e "I/O Wait: ${IOWAIT}"
echo -e "Read/s:\n${READ}"
echo -e "Write/s:\n${WRITE}"
# let i++
i=$(($i+1))
sleep 1
done
echo "-----------------------------------------"
break
;;
disk_use)
#硬盘利用率
DISK_LOG=/tmp/disk_use.tmp
DISK_TOTAL=`fdisk -l | awk '/^Disk.*bytes/ && /\/dev/{print $2" ";printf "%d",$3;print "GB"}'`
USE_RATE=`df -h | awk '/^\/dev/{print int($5)}'`
for i in ${USE_RATE}
do
if [ ${i} -gt 90 ]; then
PART=`df -h | awk '{if(int($5)=='''${i}'''){print $NF}}'`
echo "${PART} = ${i}%" >> ${DISK_LOG}
fi
done
echo "-----------------------------------------"
echo -e "Disk total:\n${DISK_TOTAL}"
if [ -f "${DISK_LOG}" ]; then
echo "-----------------------------------------"
cat ${DISK_LOG}
echo "-----------------------------------------"
rm -rf ${DISK_LOG}
else
echo "-----------------------------------------"
echo "Disk use rate no than 90% of the partition."
echo "-----------------------------------------"
fi
break
;;
disk_inode)
#硬盘inode利用率
INODE_LOG=/tmp/inode_use.tmp
INODE_USE=`df -i | awk '/^\/dev/{print int($5)}'`
for i in ${INODE_USE}
do
if (( ${i} > 90 )); then
PART=`df -i | awk '{if(int($5)=='''${i}'''){print $NF}}'`
echo "${PART} = ${i}%" >> ${INODE_LOG}
fi
done
if [ -f "${INODE_LOG}" ]; then
echo "-----------------------------------------"
cat ${INODE_LOG}
echo "-----------------------------------------"
rm -rf ${INODE_LOG}
else
echo "-----------------------------------------"
echo "Inode use rate no than 90% of the partition."
echo "-----------------------------------------"
fi
break
;;
mem_use)
#内存利用率
echo "-----------------------------------------"
MEM_TOTAL=`free -mh | awk '{if(NR==2){printf "%.1f",$2}}'`
USE=`free -mh | awk '{if(NR==2){printf "%.1f",$3}}'`
FREE=`free -mh | awk '{if(NR==2){printf "%.1f",$4}}'`
CACHE=`free -mh | awk '{if(NR==2){printf "%.1f",$6}}'`
echo -e "Total: ${MEM_TOTAL}"
echo -e "Use: ${USE}"
echo -e "Free: ${FREE}"
echo -e "Cache: ${CACHE}"
echo "-----------------------------------------"
break
;;
tcp_status)
#网络连接状态
echo "-----------------------------------------"
COUNT=`ss -ant | awk '!/^State/{status[$1]++}END{for(i in status){print i,status[i]}}'`
echo -e "Tcp connection status:\n${COUNT}"
echo "-----------------------------------------"
break
;;
cpu_top10)
#占用CPU高的前10个进程
echo "-----------------------------------------"
CPU_LOG=/tmp/cpu_top.tmp
i=1
while [[ $i -le 3 ]]
do
#循环从11列开始（进程名）开始打印，如果i等于最后一行，就打印i的列，并换行，否则就打印i的列
ps aux | awk '{if($3>=0.1){{printf "PID: " $2 " CPU: " $3 "%--> "}for(i=11;i<=NF;i++){if(i==NF){printf $i"\n"}else{printf $i}}}}' | sort -k4 -nr | head -n 10 > ${CPU_LOG}
if [[ -n `cat ${CPU_LOG}` ]]; then
echo -e "\033[32m 参考值${i}\033[0m"
cat ${CPU_LOG}
> ${CPU_LOG}
else
echo "No process using the CPU."
break
fi
let i++
sleep 1
done
echo "-----------------------------------------"
break
;;
mem_top10)
#占用内存高的前10个进程
echo "-----------------------------------------"
MEM_LOG=/tmp/mem_top.tmp
i=1
while [[ $i -le 3 ]]
do
#循环从11列开始（进程名）开始打印，如果i等于最后一行，就打印i的列，并换行，否则就打印i的列
ps aux | awk '{if($4>=0.1){{printf "PID: " $2 " Memory: " $4 "%--> "}for(i=11;i<=NF;i++){if(i==NF){printf $i"\n"}else{printf $i}}}}' | sort -k4 -nr | head -n 10 > ${MEM_LOG}
if [[ -n `cat ${MEM_LOG}` ]]; then
echo -e "\033[32m 参考值${i}\033[0m"
cat ${MEM_LOG}
> ${MEM_LOG}
else
echo "No process using the Memory."
break
fi
let i++
sleep 1
done
echo "-----------------------------------------"
break
;;
traffic)
#查看网络流量
while :
do
read -p "Please enter the network card name(eth[0-9] or em[0-9]): " eth
if [ `ifconfig | grep -c "\<$eth\>"` -eq 1 ]; then
break
else
echo "Input format error or Don't have the card name,please input again."
fi
done
echo "-----------------------------------------"
echo -e "In ------ Out"
i=1
while [[ $i -le 3 ]]
do
# CentOS6和CentOS7 ifconfig输出进出流量信息位置不同
# CentOS6中RX与TX行号等于8
# CentOS7中RX行号是5，,TX行号是7
OLD_RX=`ifconfig eth0 | awk -F'[ :]+' '/bytes/{if(NR==8){print $4} else if(NR==5){print $6}}'`
OLD_TX=`ifconfig eth0 | awk -F'[ :]+' '/bytes/{if(NR==8){print $9} else if(NR==7){print $6}}'`
sleep 1
NEW_RX=`ifconfig eth0 | awk -F'[ :]+' '/bytes/{if(NR==8){print $4} else if(NR==5){print $6}}'`
NEW_TX=`ifconfig eth0 | awk -F'[ :]+' '/bytes/{if(NR==8){print $9} else if(NR==7){print $6}}'`
# 1M带宽==>1M=1024bit 计算下载速率的时候用的是KB/S（指的K字节（byte）每秒）1byte=8*bit
# 1M带宽的理论下载速度通常是1024/8=128KB/S
# 网卡的流量单位是byte 字节，所以要先除以1024转成Kbyte，然后转换成多少M带宽，就再除以128
RX=`awk 'BEGIN{printf "%.1f\n",'$((${NEW_RX}-${OLD_RX}))'/1024/128}'`
TX=`awk 'BEGIN{printf "%.1f\n",'$((${NEW_TX}-${OLD_TX}))'/1024/128}'`
echo "${RX}MB/s ${TX}MB/s"
let i++
sleep 1
done
echo "-----------------------------------------"
break
;;
quit)
exit 0
;;
*)
echo "-----------------------------------------"
echo "Please enter the right number."
echo "-----------------------------------------"
break
;;
esac
done
done
