[Linux Shell Script] Process Check 하고 없으면 Process 실행 ( pid 파일 생성 )

Process Check 스크립트

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#!/bin/bash                                                                      

                                                                                 

export SERVER_PATH="/root"                                                       

                                                                                 

if [ ! -e "mongo-start.pid" ];                                                   

then                                                                             

        echo "mongo-start"                                                       

        process_chk='ps -ef | grep -v "grep"|grep mongod| wc -l'                 

        no_process="0"                                                           

        if [ "$process_chk" == "$no_process" ];                                  

        then                                                                     

                echo "start mongo"                                               

                cd $SERVER_PATH; sh ./mongo_start.sh                             

        fi                                                                       

fi                                                                               

                                                                                 

if [ -e "mongo-start.pid" ];                                                     

then                                                                             

        echo "start.pid"                                                         

        process_chk='ps -ef | grep -v "grep"|grep mongod| wc -l'                 

        no_process="0"                                                           

        if [ "$process_chk" == "$no_process" ];                                  

        then

                echo "start mongo"                                               

                rm $SERVER_PATH/mongo-start.pid                                  

                cd $SERVER_PATH; sh ./mongo_start.sh                             

        fi

                                                                     

fi                                                                               

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Process 실행, pid 파일 생성 스크립트

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#!/bin/bash                                                                      

                                                                                 

echo "mongo start"                                                               

nohup mongod --auth --config /etc/mongod.conf &                                  

export SEVERPID=$!                                                               

cd ~/                                                                            

echo ${SEVERPID} | cat > mongo-start.pid                                         

echo "mongo start end"                                                           

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참조 : https://limdh3325.blogspot.com/2021/04/pid.html