linux定时守护进程脚本,Linux守护进程⾃动重启shell脚本分享#!/bin/sh
#本脚本为守护进程, 如果发现进程僵死时, ⾃动重启进程
function check_and_kill_and_start(){
log_file=$1
ps_name=$2
dead_duration=$3
# echo "check the progress "$ps_name
ymd=$(date +%Y-%m-%d)
log_file=${log_file}${ymd}.log
# echo $log_file 判断是否存在log_file
if [ ! -e ${log_file} ];then
exit 0
fi
# %y 上次修改时间
last_modify=$(stat -c %Y ${log_file})
now=$(date +%s)
#如果上次写⼊⽇志的时间和现在的时间差⼤于 dead_duration 秒, 则重启进程
if [ $[ $now - $last_modify ] -gt $dead_duration ]; then
mail_subject='[报警][${ps_name}进程重启]'
enter='\\
'
mail_content='${ps_name}进程重启${enter}'
echo '========================='$(date +"%Y-%m-
%d %H:%M:%S")'====================================='
echo [$log_file]' last update time ['$(date -d @$last_modify "+%Y-%m-%d %H:%M:%S")'], need restart progress '[$ps_name]
proc_id=$(ps -ef|grep -i ${ps_name}|grep -v "grep"|awk '{print $2}')
#echo 'the old ps is '${proc_id[@]}
if [[ -n $proc_id ]];then
echo 'old progress exist, kill it first'
for id in ${proc_id[*]}
do
# thread=$(ps -mp ${id}|wc -l)
#杀掉⽗进程和⼦进程
kill -TERM ${id}
if [ $? -eq 0 ];then
echo "kill the progress sucessfull"
else
echo "kill the progress failed "
fi
done
echo 'sleep l0s then start new progress'
fi
sleep 10s
/usr/local/bin/python27 /var/disk/web/gsm_project/score/${ps_name} &
if [ $? -eq 0 ];then
proc_id=$(ps -ef|grep -i ${ps_name}|grep -v "grep"|awk '{print $2}')
echo 'the new progress id is '${proc_id[@]}
else
echo "progress start failed, the cron will try to start it next time "
fi
#else
#echo '========================='$(date +"%Y-%m-
%d %H:%M:%S")'====================================='
#echo [$log_file]' last update time ['$(date -d @$last_modify "+%Y-%m-%d %H:%M:%S")']'
fi
}
#echo '========================='$(date +"%Y-%m-
%d %H:%M:%S")'====================================='
#执⾏⽅法 log⽂件路径 ⽂件名 查时间
check_and_kill_and_start /var/disk/logs/score_cache/server_gsm_score score_cache_match_5se.py 30
Linux 简单shell创建⾃⼰的守护进程，⾃动重启，监控进程运⾏
对于守护进程管理、⾃动重启、记录log，有⼀个很好⽤的进程管理⼯具supervisord。它可以说简单易⽤，且功能强⼤。但是对于我的部署需求来说还是过于繁琐，且没有搞定⽤它如何记录进程状态。
今天写了⼀个简单的shell脚本，以满⾜我的所有需求，并且部署简单。
希望能够给有同样需求的码农们提供⼀个参考。pgmctl.sh
#!/bin/bash
CMD="./mypgm"
PID="./"
LOG="./log/mypgm.log"
DEBUG="false"
# ---------------------------------------------------
# 启动函数
function start {
$CMD -debug=$DEBUG server.ini >> $LOG 2>&1 & mypgmpid=$!
echo $mypgmpid > $PID
echo "start [ok]"
}
# 停⽌函数
function stop {
kill `cat $PID`
rm $PID
echo "stop [ok]"
}
# --------------------------------------------------
echo "$CMD $1"
case "$1" in
start)
start
;
;
start_debug)
DEBUG="true"
start
;;
restart)
if [ -f $PID ] ; then
stop
sleep 4
fi
start
;
;
stop)
stop
exit 0
;;
esac
for (( c=0 ; ; c++ ))
do
if [ -f $PID ] ; then
mypgmpid=`cat $PID`
cmdex="ps uh -p$mypgmpid"
psrtn=`$cmdex`
if [ -z "$psrtn" ]; then
# 进程挂掉⾃动重启
linux下的sleep函数
echo "`date '+%Y/%m/%d %H:%M:%S'` FATALERROR RESTART SERVICE" >> $LOG start
elif (( $c%20 == 0 )); then
# 记录进程运⾏状态
echo "`date '+%Y/%m/%d %H:%M:%S'` PSINFO $psrtn" >> $LOG
c=0
fi
sleep 3
else
break
fi
done
启动：./pgmctl.sh start &
debug 启动 : ./pgmctl.sh start_debug &
重启：./pgmctl.sh restart &
停⽌：./pgmctl.sh stop
此脚本只是⽰例，提供⼀个思路。到你正在⽤的时候，需要按照⾃⼰需求修改

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