shell實現自動化部署項目

shell獲取命令的返回值

    res=`docker run -dti -v $rootdir:/monitor -v /etc/localtime:/etc/localtime:ro 86912afeeaa8 /bin/bash`
    echo $res
    echo "${res} container is running....."

字符串和變量拼接

       imagedir="$rootdir/docker/escron.tar"

shell單雙引號的區別

       

 windows和linux平台兼容

       用vi/vim命令打開腳本文件，輸入“：set fileformat=unix”，回車，保存退出

寫入單行文本和多行文本

       單行文本

          echo Hello > filename.txt

       多行文本 

        cat>${shelldir}/hostcron.sh<<EOF
          #! /bin/bash
          docker exec ${res} /bin/bash /monitor/shell/crontbday.sh 

          echo $(date "+%Y-%m-%d %H:%M:%S") >>${rootdir}/msgday.log

          echo \$(date "+%Y-%m-%d %H:%M:%S") >>${rootdir}/msgday.log   \表示轉義字符 后面的命令做為字符串寫入到文件  而不是把命令的執行結果寫入到文件
         EOF

sed命令中使用變量

       把命令中的單引號變成雙引號 

       #sed -i 's/ip=.*/ip=10.10.10.10/' ${filedir}
       sed -i "s/ip=.*/ip=$ip/" ${filedir}

實例代碼

#! /bin/bash
#執行此腳本需要root用戶權限

read -p "Enter your es server Ip, please: " ip
echo $ip

basedir=`cd $(dirname $0); pwd -P;`
rootdir=$(dirname $basedir)
echo "the root dir is $rootdir"

echo "setting the es server ip"
filedir="$rootdir/common/esConfig.py"
#sed -i 's/ip=.*/ip=${ip}/' ${filedir}
sed -i "s/ip=.*/ip=\"$ip\"/" ${filedir}

echo 'loadding docker images'
imagedir="$rootdir/docker/escron.tar"
echo "the image at ${imagedir}"
docker load -i $imagedir
echo "loadding docker image complete...."

echo 'run a docker container......'
res=`docker run -dti  -v $rootdir:/monitor  -v /etc/localtime:/etc/localtime:ro 86912afeeaa8  /bin/bash`
echo $res
echo "${res} container is running....."

shelldir="$rootdir/shell"
echo "update the containerID to the shell"

cat>${shelldir}/hostcron.sh<<EOF
#! /bin/bash
docker exec ${res} /bin/bash /monitor/shell/crontb.sh
echo \$(date "+%Y-%m-%d %H:%M:%S") >>${rootdir}/msg.log
EOF

cat>${shelldir}/hostcronday.sh<<EOF
#! /bin/bash
docker exec  ${res}  /bin/bash /monitor/shell/crontbday.sh
echo \$(date "+%Y-%m-%d %H:%M:%S") >>${rootdir}/msgday.log
EOF

echo 'setting the system crontab'
echo "*/60 * * * * sh ${shelldir}/hostcron.sh" >> /var/spool/cron/root
echo "1 0 * * * sh ${shelldir}/hostcronday.sh" >> /var/spool/cron/root
echo "the task is success finished.....!"