forked from DevOps/deploy.stack
81 lines
2.1 KiB
Bash
81 lines
2.1 KiB
Bash
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#!/usr/bin/env bash
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# MySQL 用户名、密码、主机和端口
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MYSQL_USER=${MYSQL_USER}
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MYSQL_PASSWORD=${MYSQL_PASSWORD}
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MYSQL_HOST=${MYSQL_HOST}
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MYSQL_PORT="3306"
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# 不需要备份的数据库列表
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EXCLUDE_DATABASES=("information_schema" "performance_schema" "mysql" "sys")
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# 创建临时配置文件
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MYSQL_CONFIG=${HOME}/mysql.cnf
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cat > $MYSQL_CONFIG <<EOF
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[client]
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user=${MYSQL_USER}
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password=${MYSQL_PASSWORD}
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host=${MYSQL_HOST}
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port=${MYSQL_PORT}
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EOF
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# 获取所有数据库并过滤
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DATABASES=$(mysql --defaults-extra-file=$MYSQL_CONFIG --silent -e "SHOW DATABASES;" | grep -Ev "^Database$|^($(IFS="|"; echo "${EXCLUDE_DATABASES[*]}"))$")
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# 打印数据库列表
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echoDBS() {
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echo "需要备份的数据库: "
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# 使用for循环打印过滤后的数据库
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for db in ${DATABASES}; do
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echo "${db}"
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done
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# 删除临时文件
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rm -f $MYSQL_CONFIG
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}
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# 打印数据库及其大小
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echoDBSSize() {
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echo "需要备份的数据库及其大小: "
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local TOTAL_SIZE=0
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# 使用for循环打印过滤后的数据库及其大小
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for db in ${DATABASES}; do
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SIZE=$(mysql --defaults-extra-file=$MYSQL_CONFIG --silent -e "SELECT IFNULL(ROUND(SUM(data_length + index_length) / 1024 / 1024, 2), 0) AS 'Size (MB)' FROM information_schema.TABLES WHERE table_schema = '${db}';" | grep -v "Size (MB)")
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echo "${db} - ${SIZE} MB"
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TOTAL_SIZE=$(echo "$TOTAL_SIZE + $SIZE" | bc)
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done
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echo "-------------------------"
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TOTAL_SIZE_GB=$(echo "scale=2; $TOTAL_SIZE / 1024" | bc)
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echo "总大小: ${TOTAL_SIZE} MB (${TOTAL_SIZE_GB} GB)"
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# 删除临时文件
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rm -f $MYSQL_CONFIG
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}
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help() {
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echo "使用方法:"
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echo " $(basename "$0") [选项]"
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echo ""
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echo "选项:"
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echo " -l, --list 列出需要备份的数据库"
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echo " -s, --size 列出需要备份的数据库及其大小"
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echo " -h, --help 显示帮助信息"
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}
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# 处理输入参数
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case "$1" in
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-l|--list)
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echoDBS
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;;
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-s|--size)
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echoDBSSize
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;;
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-h|--help)
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help
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;;
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*)
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echo "错误: 未知参数 '$1'"
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help
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exit 1
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;;
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esac
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