From e1d1125bdc40d68729acae22dc15beb5809252a5 Mon Sep 17 00:00:00 2001
From: Menno van Leeuwen <menno@vleeuwen.me>
Date: Thu, 13 Mar 2025 23:23:16 +0100
Subject: [PATCH] feat: add JuiceFS service deployment and configuration

---
 config/ansible/tasks/servers/server.yml       |   3 +
 .../tasks/servers/services/juicefs.yml        | 112 ++++++++++++++++++
 2 files changed, 115 insertions(+)
 create mode 100644 config/ansible/tasks/servers/services/juicefs.yml

diff --git a/config/ansible/tasks/servers/server.yml b/config/ansible/tasks/servers/server.yml
index c9bf945..fbf4ce5 100644
--- a/config/ansible/tasks/servers/server.yml
+++ b/config/ansible/tasks/servers/server.yml
@@ -11,6 +11,9 @@
     - name: Include ZFS tasks
       ansible.builtin.include_tasks: zfs.yml
 
+    - name: Include JuiceFS tasks
+      ansible.builtin.include_tasks: juicefs.yml
+
     - name: Check if datapool exists
       ansible.builtin.command: zpool list datapool
       register: datapool_check
diff --git a/config/ansible/tasks/servers/services/juicefs.yml b/config/ansible/tasks/servers/services/juicefs.yml
new file mode 100644
index 0000000..0e1a42d
--- /dev/null
+++ b/config/ansible/tasks/servers/services/juicefs.yml
@@ -0,0 +1,112 @@
+- name: Check if JuiceFS is already installed
+  ansible.builtin.command: which juicefs
+  register: juicefs_check
+  ignore_errors: true
+  changed_when: false
+
+- name: Install JuiceFS using the automatic installer
+  ansible.builtin.shell: curl -sSL https://d.juicefs.com/install | sh -
+  args:
+    warn: false  # Suppress warnings about using shell/curl
+  register: juicefs_installation
+  when: juicefs_check.rc != 0
+  become: true
+
+- name: Verify JuiceFS installation
+  ansible.builtin.command: juicefs version
+  register: juicefs_version
+  changed_when: false
+  when: juicefs_check.rc != 0 or juicefs_installation.changed
+
+- name: Create mount directory
+  ansible.builtin.file:
+    path: /mnt/object_storage
+    state: directory
+    mode: '0755'
+  become: true
+
+- name: Create cache directory
+  ansible.builtin.file:
+    path: /var/jfsCache
+    state: directory
+    mode: '0755'
+  become: true
+
+- name: Check if JuiceFS is already formatted
+  ansible.builtin.stat:
+    path: /mnt/juicefs-metadata.sqlite
+  register: metadata_file
+
+- name: Set JuiceFS facts
+  ansible.builtin.set_fact:
+    hetzner_access_key: "{{ lookup('community.general.onepassword', 'mfk2qgnaplgtk6xmfc3r6w6neq', vault='j7nmhqlsjmp2r6umly5t75hzb4', field='AWS_ACCESS_KEY_ID') }}"
+    hetzner_secret_key: "{{ lookup('community.general.onepassword', 'mfk2qgnaplgtk6xmfc3r6w6neq', vault='j7nmhqlsjmp2r6umly5t75hzb4', field='AWS_SECRET_ACCESS_KEY') }}"
+
+- name: Format JuiceFS volume
+  ansible.builtin.command: >
+    juicefs format
+    --storage s3
+    --capacity=5000
+    --bucket https://mvl-sh.hel1.your-objectstorage.com
+    --access-key {{ hetzner_access_key }}
+    --secret-key {{ hetzner_secret_key }}
+    --trash-days=7
+    --dir-stats
+    --hash-prefix
+    sqlite3:///mnt/juicefs-metadata.sqlite myjfs
+  become: true
+  when: not metadata_file.stat.exists
+
+- name: Create JuiceFS systemd service file
+  ansible.builtin.template:
+    src: juicefs.service.j2
+    dest: /etc/systemd/system/juicefs.service
+    owner: root
+    group: root
+    mode: '0644'
+  become: true
+
+- name: Create systemd service file content
+  ansible.builtin.copy:
+    content: |
+      [Unit]
+      Description=JuiceFS
+      After=network.target
+      Before=docker.service
+
+      [Service]
+      Type=simple
+      ExecStart=/usr/local/bin/juicefs mount sqlite3:///mnt/juicefs-metadata.sqlite /mnt/object_storage --cache-dir=/var/jfsCache --buffer-size=8192 --prefetch=4 --cache-size=204800 --writeback --attr-cache=1 --entry-cache=1 --open-cache=1
+      Restart=on-failure
+
+      [Install]
+      WantedBy=multi-user.target
+    dest: /etc/systemd/system/juicefs.service
+    owner: root
+    group: root
+    mode: '0644'
+  become: true
+
+- name: Reload systemd daemon
+  ansible.builtin.systemd:
+    daemon_reload: true
+  become: true
+
+- name: Enable and start JuiceFS service
+  ansible.builtin.systemd:
+    name: juicefs.service
+    enabled: true
+    state: started
+  become: true
+
+- name: Check if JuiceFS is mounted
+  ansible.builtin.shell: df -h | grep /mnt/object_storage
+  become: true
+  register: mount_check
+  ignore_errors: true
+  changed_when: false
+
+- name: Display mount status
+  ansible.builtin.debug:
+    msg: "JuiceFS is successfully mounted at /mnt/object_storage"
+  when: mount_check.rc == 0