How I could restart the web server in docker

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The discussion revolves around restarting the web server in Docker. berniegao initially asked if there’s a way to restart the web server similar to reloading config files in a manual Rails server installation. watchmanmonitor suggested using ./launcher stop app and ./launcher start app, but berniegao clarified that this method restarts the entire Docker container.

sam then provided the correct method: ./launcher enter app followed by sv restart unicorn. Jared_Smith1 asked if exiting the app is necessary after this step.

The conversation also touched on troubleshooting issues, such as SpaceMonkey encountering an error when trying to run ./launcher enter app, which Stephen helped resolve.

Additionally, trusktr asked if there’s a UI button to restart the server, and jomaxro explained that there isn’t one. trusktr suggested that a UI button for rebuilding would be convenient.

jomaxro clarified that most changes to the app.yml require a rebuild, which cannot be triggered from the UI. Stephen added that some settings, such as SMTP, can be updated and picked up immediately by running ./launcher destroy app and ./launcher start app, while others require a rebuild.

1

by manual installation, I could cease the rails server to reload the config files. Is there something like the rails server within docker?

@sam

2

This seems to work for me:

3

doing so will restart the entire docker container. what I trying to do is to restart the web server without touch the container, such as using “rails server” and then stop it without utilizing docker.

4

why are you trying to do this, not following at all. Anyway here you go.

cd /var/discourse 
./launcher enter app
sv restart unicorn
5

should we exit app after this step? I’m so new to this if it wasn’t obvious

6

I have discourse installed via docker. After upgrading yesterday my discourse has been down. I am trying to run ./launcher enter app
from
/var/www/discourse/
I am getting the error ./launcher: No such file or directory Is there way for me to search the correct directory for this command?

image
image738×187 2.63 KB

7

/var/www/discourse doesn’t exist outside the app, if you can see that path you’re already inside discourse.

Type exit - does that end the ssh connection, or bring you back to /var/discourse?

8

UI 中有重启服务器的按钮吗？我看到有新版本时会显示升级按钮，我认为那会执行重启，但我没看到专门用于重启的按钮。

9

没有，确实没有。你为什么需要重启 Web 服务器？你想解决什么问题？

10

我想重启服务器，看看 app.yml 的更改是否生效。我想可能还需要重新构建。也许在管理界面的升级部分附近添加一个 UI 按钮会更方便。

11

对 app.yml 的大多数更改都需要重新构建。重新构建无法从 UI 触发，您需要连接到服务器本身，在 Docker 容器外部进行操作。

12

SMTP 等设置可在 yml 文件中更新，并通过以下命令立即生效：

./launcher destroy app
./launcher start app

而其他内容（包括插件）则需要重新构建。