!/bin/bash
auth:George
func:sys info check
version:v1.0
sys:centos6.x/7.x
set -e
[ $(id -u) -gt 0 ] && exit 1
cpu使用超过百分之多少进行限制
PEC_CPU = 80
限制进程使用百分之多少，如果进程为多线程，单个CPU限制为85，如果多核心，就需要按照比例写，例如CPU为2c，像限制多线程占比80%，就写170
LIMIT_CPU=85
日志
LOG_DIR=/var/log/cpulimit/
超过阈值进程pid
PIDARG=$(ps -aux|awk -v CPU=${PEC_CPU} '{if($3 > CPU) print $2}')
CPULIMITCMD=$(which cpulimit)
install_cpulimit(){
[ ! -d /tmp ] && mkdir /tmp || cd /tmp
wget -c https://github.com/opsengine/cpulimit/archive/v0.2.tar.gz
tar -zxf v0.2.tar.gz
cd cpulimit-0.2 && make
[ $? -eq 0 ] && cp src/cpulimit /usr/bin/
}
do_cpulimit(){
[ ! -d ${LOG_DIR} ] && mkdir -p ${LOG_DIR}
for i in ${PIDARG};
do
MSG=$(ps -aux |awk -v pid=$i '{if($2 == pid) print $0}')
echo ${MSG}
[ ! -d /tmp ] && mkdir /tmp || cd /tmp
nohup ${CPULIMITCMD} -p $i -1 ${LIMIT_CPU} &
echo "$(date) -- ${MSG}" >> ${LOG_DIR}$(date +%F).log
done
}
main(){
hash cpulimit
if [ $? -eq 0 ];then
do_cpulimit
else
install_cpulimit && do_cpulimit
fi
}
main