目录手动部署ob三副本集群1. IP地址和机器规划2. 初始化机器3. 安装observer4. 集群初始化（bootstrap）5. 部署obproxy（以单节点为例）6. 创建租户并生成一些数据总结手动部署ob三副本集群
the situation is like this: im creating a Logger class that can write to a file but the write_to_file() function is in a helper class as a static function.
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