elasticsearch - 有没有办法更改elasticsearch 7的/etc/default/elasticsearch文件？

Question

在Elasticsearch 7的文档中，它明确表示

For the package distributions, the config directory location defaults to /etc/elasticsearch . The location of the config directory can also be changed via the ES_PATH_CONF environment variable, but note that setting this in your shell is not sufficient. Instead, this variable is sourced from /etc/default/elasticsearch (for the Debian package) and /etc/sysconfig/elasticsearch (for the RPM package). You will need to edit the ES_PATH_CONF=/etc/elasticsearch entry in one of these files accordingly to change the config directory location.

有没有办法为软件包分发安装的其他/etc/default/elasticsearch文件指定我自己的路径？我已经尝试通过在我的systemd服务文件中添加以下内容来尝试该文件，该文件使用我想要的EnvironmentFile，但是在服务启动时仍使用/etc/default/elasticsearch。

[Service]
...
EnvironmentFile=-/etc/default/elasticsearch-development

Answer 1

对此的答案(至少对于7.7.0版而言)是，由于没有提供任何选项或环境变量，因此无法无缝地执行此操作。但是，可以编辑软件包安装随附的/usr/share/elasticsearch/elasticsearch-env文件，并用以下内容替换第81行:

if [ ! -z "$ES_DEFAULT" ]; then
  source $ES_DEFAULT
else
  source /etc/default/elasticsearch
fi

然后可以在系统服务文件中将ES_DEFAULT设置为指向其他/etc/default文件。

[Service]
...
Environment=ES_DEFAULT=/etc/default/elasticsearch-development