OpenVPN AS Docker 遇到 Another twistd server is running, PID xx

在 Ubuntu 虛擬機執行 sudo docker ps 時發現 OpenVPN AS 一直在重啟，然後被洗版以下訊息

Another twistd server is running, PID 1

This could either be a previously started instance of your application or a
different application entirely. To start a new one, either run it in some other
directory, or use the --pidfile and --logfile parameters to avoid clashes.

查詢後找到這個 CSDN 文章: https://blog.csdn.net/Awesome_py/article/details/122342265 | CC 4.0 BY-SA

大意就是去容器裡面把 pid 檔案刪除

開始
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首先先成為 root

sudo -i

查看容器 ID

docker ps -a

CONTAINER ID   IMAGE                       COMMAND                  CREATED          STATUS          PORTS                                       NAMES
9197f0c1442a   openvpn/openvpn-as:latest   "/docker-entrypoint.…"   6 weeks ago      Up 11 minutes                                               openvpn_as

在此範例，9197f0c1442a 就是 ID

把容器停止

指令為 docker stop ID 或名字

docker stop 9197f0c1442a

docker inspect 9197f0c1442a

尋找類似這樣的地方，因為我這個系統的 Docker 是用 Snap 裝的，可能跟你比較不一樣

"Data": {
                "LowerDir": "/var/snap/docker/common/var-lib-docker/overlay2/2f87497f0a8a09a684e06ab8e3f0d544d7e62f22981b8aec82bb32ed8aa2a081-init/diff:/var/snap/docker/common/var-lib-docker/overlay2/24a42029198ef590420fe3918f6c95fde8231260c29be0d8d032a456b6089c51/diff:/var/snap/docker/common/var-lib-docker/overlay2/bea0c55fba471e7dd6568a18403a15ca550d3e66f76c21a4179f67beedcf1c12/diff:/var/snap/docker/common/var-lib-docker/overlay2/210f35ef1045b27c779582bfd87097a861bb7f65ec701c882b9914a583d213b1/diff:/var/snap/docker/common/var-lib-docker/overlay2/08bab7648426ef3cfd258b31be998829acc6b563d52f366e7e759c433ab52c9e/diff:/var/snap/docker/common/var-lib-docker/overlay2/d56b8dbb9365da0f32cc426d7149b010a719d895d159835d14c9379e3cd341f0/diff",
                "MergedDir": "/var/snap/docker/common/var-lib-docker/overlay2/2f87497f0a8a09a684e06ab8e3f0d544d7e62f22981b8aec82bb32ed8aa2a081/merged",
                "UpperDir": "/var/snap/docker/common/var-lib-docker/overlay2/2f87497f0a8a09a684e06ab8e3f0d544d7e62f22981b8aec82bb32ed8aa2a081/diff",
                "WorkDir": "/var/snap/docker/common/var-lib-docker/overlay2/2f87497f0a8a09a684e06ab8e3f0d544d7e62f22981b8aec82bb32ed8aa2a081/work"
            }

請看末尾是 merged, diff, work 的那幾個目錄，它們前方都相同，我們要去它們存在的目錄:

類似這樣

cd /var/snap/docker/common/var-lib-docker/overlay2/2f87497f0a8a09a684e06ab8e3f0d544d7e62f22981b8aec82bb32ed8aa2a081/

尋找以及刪除 .pid 檔案

首先尋找 .pid 檔案:

find -name '*.pid'

以我為例，我找到這兩個檔案:

./diff/twistd.pid
./diff/ovpn/tmp/wserv.pid

然後我們分別刪除這兩個檔案

rm ./diff/twistd.pid
rm ./diff/ovpn/tmp/wserv.pid

發現
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我覺得造成這問題的原因是我昨天把我的 Proxmox 重開，然後我這 Ubuntu 忘記裝 qemu-guest-agent 導致可能沒能正常關機所致

開始#

發現#

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發現
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