自动备份OpenShift数据到Dropbox(2)—自动备份脚本和cron任务的设置

#!/bin/sh  
#  
# Dropbox Backup Cron Job Script v0.1  
#  
# Copyright (C) 2012 http://shuyz.com   
#   
# This script is expected to run on OpenShift, you may port it to other VPS by doing a little coding.  
#  
  
# 1: debug  0: run  
debug=0  
  
# Change the configuration below according to your apps  
#  
# OpenShift 应用名称  
appname=apps  
# 需要备份的目录路径，如果目录有多个，请用空格分割  
src_folder=~/${appname}/repo/php  
# 新建数据库的时候OpenShift的数据库信息  
db_host=127.1.2.3  
db_port=3306  
db_user=admin  
db_pass=pass123  
db_name=wordpress  
# dropbox uploader脚本的绝对路径  
dropbox_uploader=~/${appname}/repo/dropbox/dropbox_uploader.sh  
# 备份到Dropbox的哪个目录  
remote_loc=/backup/openshift  
# 配置完成！  
  
  
# You may just keep the configuration below  
bak_time=$(date +%Y%m%d%H%M%S)  
tmp_folder=~/${appname}/tmp/bak_${bak_time}/  
file_name=bak_${bak_time}.zip  
bak_file=~/${appname}/tmp/${file_name}  
db_file=${tmp_folder}${db_name}.sql  
log_file=~/${appname}/logs/dropbox_bak_${bak_time}  
  
# save message to log file or echo message on the screen  
function showmsg() {  
    if [ ${debug} -eq 1 ]; then   
        echo [$(date +%Y/%m/%d.%H:%M:%S)] "$1"  
    else  
        if [ -f ${log_file} ]; then  
            echo [$(date +%Y/%m/%d.%H:%M:%S)] "$1" >> ${log_file}  
        else  
  
            echo [$(date +%Y/%m/%d.%H:%M:%S)] "$1" > ${log_file}  
        fi  
    fi  
}  
  
# remove temporary files and exit with error code  
function endnow() {  
    showmsg "remove temporary files and directories"  
    if [ -d ${tmp_folder} ]; then  
        rm -rf ${tmp_folder}  
    fi  
  
    if [ -f ${bak_file} ]; then  
        rm ${bak_file}  
    fi    
      
    # exit  
    if [ "$1" -eq 0 ]; then  
        showmsg "backup succeed!"  
        exit 0  
    else  
        showmsg "backup failed!"  
        exit 1  
    fi  
}  
  
# check the exit code of previous command  
function checkresult() {  
    if [ $? -ne 0 ]; then  
        showmsg "$1"  
        endnow 1  
    fi  
}  
  
showmsg "creating backup directory on ${tmp_folder}"  
mkdir ${tmp_folder}  
checkresult "failed to create backup directory"  
  
showmsg "exporting databases: ${db_name}"  
mysqldump -h${db_host} -p${db_port} -u${db_user} -p${db_pass} ${db_name} > ${db_file}  
checkresult "failed to export database"  
  
showmsg "archiving files in folder ${src_folder}"  
cd ${src_folder}  
checkresult "cannot change working directory to ${src_folder}"  
zip -rvy ${tmp_folder}files.zip * >> ${log_file}  
checkresult "failed to archive files"  
  
showmsg "pack all files and database as ${bak_file}"  
cd ${tmp_folder}  
checkresult "cannot change working directory to ${tmp_folder}"  
zip -rvy ${bak_file} * >> ${log_file}  
checkresult "failed to pack all files"  
  
showmsg "uploading ${bak_file} to dropbox"  
$dropbox_uploader upload ${bak_file} ${remote_loc}/${file_name} >> ${log_file}  
checkresult "upload failed!"  
  
endnow 0  

# 定时备份
ln -s ~/{appname}/repo/dropbox/bak_all_weekly.sh ~/{appname}/repo/.openshift/cron/weekly/dropbox_backup