增量式备份

backUpIncremental.sh

@@ -0,0 +1,38 @@
+#!/bin/bash
+currentTime=$(date +"%Y-%m-%d-%H")
+userName=$1
+password=$2
+dbName=$3
+host=$4
+# 定义备份文件存放目录
+backUpPath=$5
+ossPath=$6
+
+
+# 获取上次备份的binlog文件名和位置
+LAST_BACKUP=$(cat "$backUpPath/last_backup.txt")
+LAST_BINLOG=$(echo "$LAST_BACKUP" | awk '{print $1}')
+LAST_POSITION=$(echo "$LAST_BACKUP" | awk '{print $2}')
+
+# 获取当前binlog文件名和位置
+CURRENT_BINLOG=$(mysql -N -e "SHOW MASTER STATUS" | awk '{print $1}')
+CURRENT_POSITION=$(mysql -N -e "SHOW MASTER STATUS" | awk '{print $2}')
+
+# 备份增量变更到文件
+# 如果上次备份的binlog文件名和位置为空，则进行全量备份
+cd $backUpPath
+#if [ -z "$LAST_BINLOG" ]; then
+#    mysqldump -u $MYSQL_USER -p$MYSQL_PASSWORD -h $MYSQL_HOST $MYSQL_DATABASE > "$BACKUP_DIR/full_backup.sql"
+#else
+    mysqlbinlog --start-position=$LAST_POSITION --stop-position=$CURRENT_POSITION --result-file="$backUpPath/$dbName-$currentTime.sql" $LAST_BINLOG
+#fi
+# 更新上次备份的binlog文件名和位置
+echo "$CURRENT_BINLOG $CURRENT_POSITION" > "last_backup.txt"
+
+# 获取备份文件列表
+backup_files=($(find "$backUpPath" -name "$dbName-*.sql" -type f -printf "%f\n"))
+
+# 打印备份文件列表
+for file in "${backup_files[@]}"; do
+    echo "$file"
+done