docs: add HowTo for MinIO to Ceph RGW backup and restore via VolSync

[fanzy618]

Converted MINIO_CEPH_RGW_VOLSYNC_USER_GUIDE.md to HowTo format in both Chinese and English.

Summary by CodeRabbit

• Documentation
  • Added comprehensive English and Chinese solution guides for S3-to-S3 backups and restores between MinIO and Ceph RGW using VolSync and rclone, including prerequisites, step-by-step Job and Secret setup, full/incremental sync and restore workflows, operational warnings about deletion and cutover, and TLS/security considerations.

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 23a0e3bc-acdf-43b1-bf2e-b6b415a8c593

📥 Commits

Reviewing files that changed from the base of the PR and between 430a897 and e8e0843.

📒 Files selected for processing (2)

• docs/en/solutions/How_to_Backup_and_Restore_Data_between_MinIO_and_Ceph_RGW_via_VolSync.md
• docs/zh/solutions/How_to_Backup_and_Restore_Data_between_MinIO_and_Ceph_RGW_via_VolSync.md

Walkthrough

Adds bilingual solution docs describing Kubernetes Job–based S3-to-S3 synchronization between MinIO and Ceph RGW using the VolSync Operator image's rclone binary; covers prerequisites, creating RGW user/credentials, rclone.conf Secret, one-off Job sync/restore steps, and operational/security warnings.

Changes

Cohort / File(s)

Summary

VolSync MinIO↔Ceph RGW Solution docs docs/en/solutions/How_to_Backup_and_Restore_Data_between_MinIO_and_Ceph_RGW_via_VolSync.md, docs/zh/solutions/How_to_Backup_and_Restore_Data_between_MinIO_and_Ceph_RGW_via_VolSync.md

New English and Chinese guides describing Job-based rclone S3-to-S3 sync (not PVC replication). Include prerequisites (Operator/install/version alignment, network, credentials), steps to create RGW user and extract keys, build rclone.conf Secret (source/dest entries, optional no_check_certificate), run a one-off Kubernetes Job for rclone sync with flags, inverse restore flow, and warnings about deletion behavior and stopping writes before cutover.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~12 minutes

Poem

🐰 I hopped through docs both near and far,
Packed rclone in a VolSync jar.
Jobs run, buckets mirror bright,
Swap source and dest to set things right.
Tiptoe safe — verify TLS with care.

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The PR title clearly and specifically summarizes the main change: adding documentation for MinIO to Ceph RGW backup/restore using VolSync, which aligns perfectly with the changeset of two new solution documents.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch feature/backup-minio-ceph-volsync-howto

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[coderabbitai]

Actionable comments posted: 2

🧹 Nitpick comments (2)

docs/en/solutions/How_to_Backup_and_Restore_Data_between_MinIO_and_Ceph_RGW_via_VolSync.md (1)

89-90: Add a security warning about no_check_certificate = true with proper boundary conditions.

Line 89 disables SSL/TLS certificate validation. The rclone documentation marks this setting as "insecure" due to MITM attack risk. Add a note clarifying: this is acceptable only for internal environments with self-signed certificates (e.g., internal MinIO/Ceph RGW deployments); for production or untrusted networks, supply a valid CA certificate using the ca_cert option instead. Include a brief explanation of the security trade-offs.

Also applies to: 137-140

🤖 Prompt for AI Agents

Verify each finding against the current code and only fix it if needed.

In
`@docs/en/solutions/How_to_Backup_and_Restore_Data_between_MinIO_and_Ceph_RGW_via_VolSync.md`
around lines 89 - 90, Add a security warning near the no_check_certificate =
true setting: explain that disabling SSL/TLS certificate validation
(no_check_certificate) is insecure and exposes to MITM attacks, state it should
only be used in internal environments with known self-signed certs (e.g.,
internal MinIO/Ceph RGW) and never on untrusted or production networks, and
instruct readers to use the ca_cert option to supply a valid CA bundle for
production; apply the same note around the other occurrence referenced (lines
137-140).

docs/zh/solutions/How_to_Backup_and_Restore_Data_between_MinIO_and_Ceph_RGW_via_VolSync.md (1)

89-90: Document the TLS verification bypass risk and constrain when to use it.

Line 89 sets no_check_certificate = true but the guide does not explicitly state the MITM/security trade-off or recommend enabling certificate validation when possible. Please add a clear warning and a safer default path (valid CA/certificates for production, bypass only for controlled/internal environments).

In rclone S3 backend configuration, what does `no_check_certificate = true` do, and what security risks or recommendations are documented for production use?

Suggested doc patch

     endpoint = ${MINIO_ENDPOINT}
-    no_check_certificate = true
+    # 仅在内网受控、使用自签名证书时启用；生产环境建议配置受信任证书并关闭该选项
+    no_check_certificate = true
@@
 ### 8. 注意事项
 - **Sync 风险**：`rclone sync` 会删除目标端中源端不存在的文件。
 - **写入静默**：迁移切换前请停止业务写入。
+- **证书校验风险**：若启用 `no_check_certificate = true`，将跳过 TLS 证书校验，存在中间人攻击风险；生产环境请优先使用可信 CA 证书并关闭该选项。

Also applies to: 137-140

🤖 Prompt for AI Agents

Verify each finding against the current code and only fix it if needed.

In
`@docs/zh/solutions/How_to_Backup_and_Restore_Data_between_MinIO_and_Ceph_RGW_via_VolSync.md`
around lines 89 - 90, Update the docs around the rclone S3 backend setting
no_check_certificate = true to explicitly warn that this disables TLS
certificate verification (introduces MITM risk), recommend enabling certificate
validation in production by configuring valid CA bundles or proper S3/Ceph RGW
certificates, and state that no_check_certificate should only be used in
controlled/internal/test environments; apply the same warning and safer-default
guidance to the other occurrence noted (lines ~137-140) and include a short “how
to fix” note: obtain/import CA or use a signed cert and flip
no_check_certificate to false.

🤖 Prompt for all review comments with AI agents

Verify each finding against the current code and only fix it if needed.

Inline comments:
In
`@docs/en/solutions/How_to_Backup_and_Restore_Data_between_MinIO_and_Ceph_RGW_via_VolSync.md`:
- Around line 29-30: Update the prerequisites to explicitly state that the
VolSync Operator image/version and the VolSync Job image/version must match the
deployed Operator to ensure compatibility; locate the section containing the
lines "VolSync Operator installed in the cluster." and "kubectl access and
network connectivity from Job Pods to both MinIO and Ceph RGW endpoints." and
add a sentence such as "Ensure the VolSync Operator and the VolSync Job image
versions are aligned (Job image version must match the deployed Operator
version)." Apply the same addition to the other occurrence referenced (the block
around the lines similar to 42-43).
- Line 139: Replace the awkward heading "Silence Writing" with clearer
wording—change the heading text to "Stop writes" and update the sentence to read
something like: "Stop writes: stop all business writes before the final
cutover." Ensure the updated phrase appears where the current "Silence Writing"
heading and its explanatory line occur in the document so readers clearly
understand to halt application/business writes during the final cutover step.

---

Nitpick comments:
In
`@docs/en/solutions/How_to_Backup_and_Restore_Data_between_MinIO_and_Ceph_RGW_via_VolSync.md`:
- Around line 89-90: Add a security warning near the no_check_certificate = true
setting: explain that disabling SSL/TLS certificate validation
(no_check_certificate) is insecure and exposes to MITM attacks, state it should
only be used in internal environments with known self-signed certs (e.g.,
internal MinIO/Ceph RGW) and never on untrusted or production networks, and
instruct readers to use the ca_cert option to supply a valid CA bundle for
production; apply the same note around the other occurrence referenced (lines
137-140).

In
`@docs/zh/solutions/How_to_Backup_and_Restore_Data_between_MinIO_and_Ceph_RGW_via_VolSync.md`:
- Around line 89-90: Update the docs around the rclone S3 backend setting
no_check_certificate = true to explicitly warn that this disables TLS
certificate verification (introduces MITM risk), recommend enabling certificate
validation in production by configuring valid CA bundles or proper S3/Ceph RGW
certificates, and state that no_check_certificate should only be used in
controlled/internal/test environments; apply the same warning and safer-default
guidance to the other occurrence noted (lines ~137-140) and include a short “how
to fix” note: obtain/import CA or use a signed cert and flip
no_check_certificate to false.

🪄 Autofix (Beta)

Fix all unresolved CodeRabbit comments on this PR:

• Push a commit to this branch (recommended)
• Create a new PR with the fixes

---

ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 3c69aee9-b546-4ba3-8776-ffb413143b21

📥 Commits

Reviewing files that changed from the base of the PR and between a867802 and 316ed1b.

📒 Files selected for processing (2)

• docs/en/solutions/How_to_Backup_and_Restore_Data_between_MinIO_and_Ceph_RGW_via_VolSync.md
• docs/zh/solutions/How_to_Backup_and_Restore_Data_between_MinIO_and_Ceph_RGW_via_VolSync.md