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This topic has been translated from a Chinese forum by GPT and might contain errors.Original topic: 修改机器名会影响tidb吗
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username: cf_data
Will changing the machine name affect the already deployed TiDB in a production environment?
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username: cf_data
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username: Modifying the hostname will not affect the already deployed TiDB.
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username: If you are connecting from another machine using an IP address, it won’t be affected. However, if you are using a hostname, you will need to use the new one.
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username: Generally speaking, TiDB is deployed using IP addresses, so it doesn’t have any impact.
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username: It won’t have an impact. Nowadays, various components in virtual machines are mostly connected using IP addresses or domain names, and rarely associated with hostnames. However, there will be differences in k8s.
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username: It basically doesn’t affect it, as they are all deployed using IPs.
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username: No, if you’re worried about issues like this, you can test it in the development environment first, and then execute it in the production environment once there are no problems.
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username: Check the parameter file in tiup cluster edit-config tidb-xxx to see if there is anything about HOSTNAME, usually it is set to IP.
Check the global configuration items:
global
monitored
server_configs
Check the local configuration items:
pd_servers
tidb_servers
tikv_servers
pump_servers
drainer_servers
cdc_servers
monitoring_servers
grafana_servers
alertmanager_servers
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username: Some databases require configuring hostnames and even push DNS, which is really a huge pitfall.
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username: