搭建TiDB分布式数据库常见问题

最新推荐文章于 2025-06-09 11:09:07 发布

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Boss_Commander

最新推荐文章于 2025-06-09 11:09:07 发布

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分类专栏： DataBase TiDB 文章标签：搭建TiDB出现的问题

本文链接：https://blog.youkuaiyun.com/zhongyi_yang/article/details/84899518

本文档列举了搭建TiDB分布式数据库时遇到的四个主要问题及其解决方案：问题1涉及修改主机名；问题2提示非SSD环境需注释相关配置；问题3建议在生产环境中启用NTP服务以保持时间同步；问题4中通过修改start.yml文件解决授权问题。

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文章目录

- 问题1
- 问题2
- 问题3
- 问题4

问题1

[tikv_servers]: Ansible UNREACHABLE! => playbook: bootstrap.yml; TASK: pre-ansible : disk space check - fail when disk is full; message: {"changed": false, "msg": "Failed to connect to the host via ssh: ssh: Could not resolve hostname tikv_servers: Name or service not known\r\n", "unreachable": true}

[pd_servers]: Ansible UNREACHABLE! => playbook: bootstrap.yml; TASK: pre-ansible : disk space check - fail when disk is full; message: {"changed": false, "msg": "Failed to connect to the host via ssh: ssh: Could not resolve hostname pd_servers: Name or service not known\r\n", "unreachable": true}

解决办法：
修改主机名（永久生效）

修改配置文件/etc/hostname来实现主机名的修改。把该文件内容hostname name中的name替换成自己想要的主机名重启即可。

$vim /etc/hostname 
hostname  myname

问题2

[spark_master]: Ansible UNREACHABLE! => playbook: bootstrap.yml; TASK: pre-ansible : disk space check - fail when disk is full; message: {"changed": false, "msg": "Failed to connect to the host via ssh: ssh: Could not resolve hostname spark_master: Name or service not known\r\n", "unreachable": true}

[spark_slaves]: Ansible UNREACHABLE! => playbook: bootstrap.yml; TASK: pre-ansible : disk space check - fail when disk is full; message: {"changed": false, "msg": "Failed to connect to the host via ssh: ssh: Could not resolve hostname spark_slaves: Name or service not known\r\n", "unreachable": true}

[192.168.56.155]: