【2023年06月版】Ubuntu22.04 で Docker + Samba で Windowsとファイル共有、ついでにサービス化

はじめに

Ubuntu側でファイル共有サーバを作りたいな。。。

そうだ、Samba しよう

環境汚したくないし、Dockerでやろ

前提条件

• 環境

$ uname -a
Linux smb_host 5.15.0-75-generic #82-Ubuntu SMP Tue Jun 6 23:10:23 UTC 2023 x86_64 x86_64 x86_64 GNU/Linux
$ cat /etc/os-release
PRETTY_NAME="Ubuntu 22.04.2 LTS"
NAME="Ubuntu"
VERSION_ID="22.04"
VERSION="22.04.2 LTS (Jammy Jellyfish)"
VERSION_CODENAME=jammy
ID=ubuntu
ID_LIKE=debian
HOME_URL="https://www.ubuntu.com/"
SUPPORT_URL="https://help.ubuntu.com/"
BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/"
PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy"

• 共有するフォルダ
  /export/smb_share

• UbuntuのサーバのIPアドレスは、192.168.100.100

• Dockerはインストール済み

$ docker -v
Docker version 24.0.2, build cb74dfc

• Docker未インストールなら、【2023年06月版】Ubuntu22.04 に docker / docker compose をインストール を参照

設定

docker-compose.yaml の入手

$ curl -O https://raw.githubusercontent.com/ServerContainers/samba/master/docker-compose.yml

docker-compose.yaml の編集

• ユーザに関する記述を削除、共有の記述を削除して、今回共有する shared について記述

$ cp docker-compose.yaml docker-compose.yaml.back
$ vim docker-compose.yaml
$ diff docker-compose.yaml.back docker-compose.yaml
diff --git a/docker-compose.yml.back b/docker-compose.yml
index 0688958..1a59100 100644
--- a/docker-compose.yml.back
+++ b/docker-compose.yml
@@ -23,40 +23,42 @@ services:
       #WSDD2_DISABLE: 1
       #AVAHI_DISABLE: 1
 
-      GROUP_family: 1500
-
-      ACCOUNT_alice: alipass
-      UID_alice: 1000
-      GROUPS_alice: family
-
-      ACCOUNT_bob: bobpass
-      UID_bob: 1001
-      GROUPS_bob: family
-
-      # example for hashed password (user: foo | password: bar) - generated using create-hash.sh script.
-      ACCOUNT_foo: "foo:1000:XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX:86C156FC198B358CCCF6278D8BD49B6A:[U          ]:LCT-61B0859A:"
-      UID_foo: 1002
-      GROUPS_foo: family
-
-      SAMBA_VOLUME_CONFIG_shared_home: "[Home]; path=/shares/homes/%U; valid users = alice, bob, foo; guest ok = no; read only = no; browseable = yes"
-
-      SAMBA_VOLUME_CONFIG_aliceonly: "[Alice Share]; path=/shares/alice; valid users = alice; guest ok = no; read only = no; browseable = yes"
-      SAMBA_VOLUME_CONFIG_alicehidden: "[Alice Hidden Share]; path=/shares/alice-hidden; valid users = alice; guest ok = no; read only = no; browseable = no"
-
-      SAMBA_VOLUME_CONFIG_bobonly: "[Bob Share]; path=/shares/bob; valid users = bob; guest ok = no; read only = no; browseable = yes"
-      
-      SAMBA_VOLUME_CONFIG_public: "[Public]; path=/shares/public; valid users = alice, bob, foo; guest ok = no; read only = no; browseable = yes; force group = family"
-      SAMBA_VOLUME_CONFIG_public_ro: "[Public ReadOnly]; path=/shares/public; guest ok = yes; read only = yes; browseable = yes; force group = family"
-      
-      SAMBA_VOLUME_CONFIG_timemachine: "[TimeMachine]; path=/shares/timemachine/%U; valid users = alice, bob, foo; guest ok = no; read only = no; browseable = yes; fruit:time machine = yes; fruit:time machine max size = 500G"
+#      GROUP_family: 1500
+#
+#      ACCOUNT_alice: alipass
+#      UID_alice: 1000
+#      GROUPS_alice: family
+#
+#      ACCOUNT_bob: bobpass
+#      UID_bob: 1001
+#      GROUPS_bob: family
+#
+#      # example for hashed password (user: foo | password: bar) - generated using create-hash.sh script.
+#      ACCOUNT_foo: "foo:1000:XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX:86C156FC198B358CCCF6278D8BD49B6A:[U          ]:LCT-61B0859A:"
+#      UID_foo: 1002
+#      GROUPS_foo: family
+#
+#      SAMBA_VOLUME_CONFIG_shared_home: "[Home]; path=/shares/homes/%U; valid users = alice, bob, foo; guest ok = no; read only = no; browseable = yes"
+#
+#      SAMBA_VOLUME_CONFIG_aliceonly: "[Alice Share]; path=/shares/alice; valid users = alice; guest ok = no; read only = no; browseable = yes"
+#      SAMBA_VOLUME_CONFIG_alicehidden: "[Alice Hidden Share]; path=/shares/alice-hidden; valid users = alice; guest ok = no; read only = no; browseable = no"
+#
+#      SAMBA_VOLUME_CONFIG_bobonly: "[Bob Share]; path=/shares/bob; valid users = bob; guest ok = no; read only = no; browseable = yes"
+#      
+#      SAMBA_VOLUME_CONFIG_public: "[Public]; path=/shares/public; valid users = alice, bob, foo; guest ok = no; read only = no; browseable = yes; force group = family"
+#      SAMBA_VOLUME_CONFIG_public_ro: "[Public ReadOnly]; path=/shares/public; guest ok = yes; read only = yes; browseable = yes; force group = family"
+#      
+#      SAMBA_VOLUME_CONFIG_timemachine: "[TimeMachine]; path=/shares/timemachine/%U; valid users = alice, bob, foo; guest ok = no; read only = no; browseable = yes; fruit:time machine = yes; fruit:time machine max size = 500G"
+      SAMBA_VOLUME_CONFIG_share: "[shared]; comment = ubuntu22.04 share; path=/shared; available = yes; read only = no; browsable = yes; public = yes; writeable = yes; guest ok = yes"
     volumes:
       - /etc/avahi/services/:/external/avahi
       
       # avoid loops when mounting folders to /shares (I'd recommend explicit mapping for each share)
-      - ./shares/alice:/shares/alice
-      - ./shares/alice-hidden:/shares/alice-hidden
-      - ./shares/bob:/shares/bob
-      - ./shares/public:/shares/public
-      - ./shares/homes:/shares/homes
-      - ./shares/timemachine:/shares/timemachine
+#      - ./shares/alice:/shares/alice
+#      - ./shares/alice-hidden:/shares/alice-hidden
+#      - ./shares/bob:/shares/bob
+#      - ./shares/public:/shares/public
+#      - ./shares/homes:/shares/homes
+#      - ./shares/timemachine:/shares/timemachine
+      - /export/smb_share:/shared

起動

$ docker compose up -d
[+] Building 0.0s (0/0)
[+] Running 1/1
 ✔ Container docker_smb-samba-1  Started

• ログを確認

$ docker compose logs -f

動作確認

Windows端末から、//192.168.100.100/shared で共有を開く

サービス化

稼働中の docker compose を停止

$ docker compose down

docker-compose.yaml の配置

• /usr/local/bin/docker_smb に配置する
• docker_smb は適当に替えても良い、サービス名になる

$ sudo mkdir /usr/local/bin/docker_smb
$ sudo cp docker-compose.yaml /usr/local/bin/docker_smb/

systemd のユニットファイルを作成

• ユニットファイル /etc/systemd/system/docker-compose-service@.service を作成する

$ cat /etc/systemd/system/docker-compose-service@.service 
[Unit]
Description=%i managed by docker-compose
Requires=docker.service

[Service]
Type=simple

Environment=COMPOSE_FILE=/usr/local/bin/%i/docker-compose.yaml

ExecStartPre=-/usr/bin/docker compose -f ${COMPOSE_FILE} down --volumes
ExecStart=/usr/bin/docker compose -f ${COMPOSE_FILE} up
ExecStop=/usr/bin/docker compose -f ${COMPOSE_FILE} down --volumes 

[Install]
WantedBy=multi-user.target

ユニットファイルの読み込み

• ユニットファイルを編集したときも再読み込みが必要

$ sudo systemctl daemon-reload

systemd のサービス登録と起動

$ sudo systemctl enable --now docker-compose-service@docker_smb

systemd でサービス化した samba の動作確認

$ sudo systemctl status docker-compose-service@docker_smb

または

$ docker-compose logs -f

さいごに

かんたんでしたね

参考資料

samba - (ghcr.io/servercontainers/samba) [x86 + arm]