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からサーバーを再起動するボタンはありますか？新しいバージョンが公開されたときにアップグレードするボタンはありますが、これは再起動を行うものだと思います。ただ、再起動専用のボタンは見当たりません。

9

いいえ、ありません。なぜ Web サーバーを再起動する必要があるのですか？どのような問題を解決しようとしているのでしょうか？

10

サーバーを再起動して、app.ymlの変更が反映されるか確認したかったのですが、再ビルドも必要のようです。管理画面のアップグレードセクション付近に、そのためのUIボタンがあると便利かもしれません。

11

app.yml の変更のほとんどは、再構築を必要とします。再構築は UI からトリガーすることはできず、docket コンテナの外からサーバー自体に接続する必要があります。

12

SMTP などの設定は yml で更新でき、以下のコマンドで即座に反映されます：

./launcher destroy app
./launcher start app

一方、プラグインを含むその他の変更には再構築が必要です。