K8S mysql 数据库备份脚本

根据提供的引用内容，K8S中的MySQL数据库备份脚本可以使用多种工具和脚本来实现。其中，常用的工具包括mysqldump、xtrabackup、mysqlbackup和mysql shell。这些工具可以通过编写shell脚本或Windows bat脚本来执行备份操作。

一个示例的备份脚本如下所示：

#!/bin/bash
backup_path="/opt/app-ai/deepwise/data/mysql-backup"
data_dir="/opt/app-ai/deepwise/data/mysql-data"
DATE=$(date +%Y-%m-%d_%H-%M-%S)

backup(){
    if \[ ! -z "${data_dir}" \];then
        mkdir -p ${backup_path}
        date >> ${backup_path}/${DATE}.log
        echo "innobackupex --user=root --password=password --host=mysql-headless ${backup_path} > ${backup_path}/${DATE}.log 2>&1 &" 
        innobackupex --user=root --password=password --host=mysql-headless ${backup_path} > ${backup_path}/${DATE}.log 2>&1
        date >> ${backup_path}/${DATE}.log
    fi
}

clean(){
    find ${backup_path}/ -name "*" -mtime +14 -exec rm -rf {} \;
}

backup
clean

这个脚本使用innobackupex工具来执行MySQL备份操作，并将备份文件存储在指定的路径中。同时，还包括了清理过期备份文件的功能。

此外，还可以使用Kubernetes的CronJob来定期执行增量备份操作。一个示例的CronJob配置如下所示：

apiVersion: batch/v1beta1
kind: CronJob
metadata:
  namespace: deepwise
  name: mysql-incdump
spec:
  jobTemplate:
    spec:
      completions: 1
      template:
        spec:
          restartPolicy: Never
          volumes:
            - name: mysql-script
              hostPath:
                path: /opt/app-ai/deepwise/data/scripts
            - name: mysql-backup
              hostPath:
                path: /opt/app-ai/deepwise/data/mysql-backup
            - name: local-time
              hostPath:
                path: /etc/localtime
            - name: mysql-data
              hostPath:
                path: /opt/app-ai/deepwise/data/mysql-data
          containers:
            - name: mysqldump-container
              image: percona/percona-xtrabackup:2.4
              volumeMounts:
                - name: mysql-script
                  mountPath: /opt/app-ai/deepwise/data/scripts
                - name: local-time
                  mountPath: /etc/localtime
                - name: mysql-backup
                  mountPath: /opt/app-ai/deepwise/data/mysql-backup
                - name: mysql-data
                  mountPath: /var/lib/mysql
              command:
                - "sh"
                - "/opt/app-ai/deepwise/data/scripts/backup_inc.sh"
          schedule: "0 0 * * *"

这个CronJob配置使用percona/percona-xtrabackup镜像来执行增量备份操作，并将备份文件存储在指定的路径中。备份脚本backup_inc.sh位于/opt/app-ai/deepwise/data/scripts目录下。

请根据实际情况修改脚本和配置文件中的路径和参数，以适应您的环境和需求。
#### 引用[.reference_title]
- *1* [分享（2）一个 mysqldump 备份 MySQL 数据库的脚本](https://blog.csdn.net/weixin_44496870/article/details/129706015)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v91^insertT0,239^v3^insert_chatgpt"}} ] [.reference_item]
- *2* *3* [[kubernetes]-使用cronjob定时备份mysql](https://blog.csdn.net/xujiamin0022016/article/details/124648643)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v91^insertT0,239^v3^insert_chatgpt"}} ] [.reference_item]
[ .reference_list ]