自动备份nginx/mysql日志的shell脚本-技术学堂

这是一段自动备份nginx/mysql日志的shell脚本，该脚本自动检测主机上所部署的服务并按日期分割其日志，然后打包并备份至指定的目录。

#!/bin/bash
# 将脚本赋予执行权限 chmod +x
# 添加一个定时任务 crontab -e
# 指定脚本执行时间 0 0 * * *

# 备份目录
backup_dir="/opt/backup/log/"
# 备份日志
backup_log="${backup_dir}backup.log"
# 源始日志保留时长
log_period="+180"
# 备份日志保留时长
tar_period="+180"
# 获取前一天的日期
lastday=`date -d "1 days ago" +%Y-%m-%d`

BACKUP_WEB_LOG () {
# 备份nginx日志
app_name="nginx"
check_ps=`ps -ef | grep -v grep | grep -i "${app_name}"`
# 如果没有部署nginx则退出该函数
[ -z "${check_ps}" ] && return 1
# 源始日志路径和列表
log_path="/mnt/sdb/nginx/logs/"
log_list=("access" "error")
if [ -d ${log_path} ]
then
  cd ${log_path}
  for log in ${log_list[@]}
  do
    # 源始日志名称
    src_name="${log}.log"
    # 日志备份格式
    pre_name="${app_name}_${log}_${lastday}"
    log_name="${pre_name}.log"
    tar_name="${pre_name}.tar.gz"
    echo "开始备份${log_name}" >> ${backup_log}
    # 备份日志
    mv ${src_name} ${log_name}
    tar -zcf ${tar_name} ${log_name}
    mv ${tar_name} ${backup_dir}
    echo "成功备份${log_name}" >> ${backup_log}
    # 删除过期的备份日志
    find . -mtime ${log_period} -name ${app_name}_${log}_* -exec rm -f {} \;
    echo "成功删除${app_name}_${log}的过期日志" >> ${backup_log}
  done
fi
}

BACKUP_MYSQL_LOG () {
# 备份mysql日志
app_name="mysqld"
check_ps=`ps -ef | grep -v grep | grep -i "${app_name}"`
[ -z "${check_ps}" ] && return 1
log_path="/var/log/mysql/"
src_name="${app_name}.log"
pre_name="${app_name}_${lastday}"
log_name="${pre_name}.log"
tar_name="${pre_name}.tar.gz"
if [ -d ${log_path} ]
then
  cd ${log_path}
  echo "开始备份${log_name}" >> ${backup_log}
  mv ${src_name} ${log_name}
  tar -zcf ${tar_name} ${log_name}
  mv ${tar_name} ${backup_dir}
  echo "成功备份${log_name}" >> ${backup_log}
  find . -mtime ${log_period} -name ${app_name}_ -exec rm -f {} \;
  echo "成功删除${app_name}的过期日志" >> ${backup_log}
fi
}

# BEGIN_BACKUP
# 如果备份目录不存在则创建
[ ! -d ${backup_dir} ] && mkdir -p ${backup_dir}
echo ">>>>> `date "+%Y-%m-%d %H:%M:%S"` <<<<<" >> ${backup_log}
BACKUP_WEB_LOG
BACKUP_MYSQL_LOG
echo -e "开始删除备份目录中的过期日志\n" >> ${backup_log}
cd ${backup_dir}
find . -mtime ${tar_period} -name *.tar.gz -exec rm -f {} \;