Created Rclone (markdown)

Rclone.md

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+# Introduction
+
+With Rclone https://rclone.org , it's possible to use many cloud filesystems, like AWS S3, MinIO https://min.io , etc.
+
+Newest WeKan has features to move files between MongoDB GridFS and filesystem.
+
+Instead of filesystem, Rclone mounted cloud filesystem directory can be used, like MinIO.
+
+# Rclone config
+
+Create config for example with command:
+```
+rclone config
+```
+At S3 providers, there is MinIO at https://rclone.org/s3/#minio
+
+`/root/.config/rclone/rclone.conf`
+
+```
+[aws]
+type = s3
+provider = AWS
+access_key_id = ACCESS-KEY-HERE
+secret_access_key = SECRET-KEY-HERE
+region = eu-north-1
+location_constraint = eu-north-1
+acl = private
+
+[minio]
+type = s3
+provider = Minio
+access_key_id = ACCESS-KEY-HERE
+secret_access_key = SECRET-KEY-HERE
+endpoint = http://192.168.0.100:9000
+acl = private
+```
+## Listing files with Rclone
+```
+rclone ls aws:
+
+rclone ls minio:
+```
+## MinIO config
+
+Create bucket, access key, secret key. Then connect them with `mc` command, here bucket wekan:
+```
+mc config host add wekan http://192.168.0.100:9000 ACCESS-KEY-HERE SECRET-KEY-HERE
+```
+## Snap
+This uses minimal cache to make it work:
+```
+rclone mount minio:wekan/files /var/snap/wekan/common/files --vfs-cache-mode minimal
+```
+Sometimes it shows this kind of message:
+```
+2022/12/27 10:22:13 NOTICE: S3 bucket wekan path files: Streaming uploads using chunk size 5Mi will have maximum file size of 48.828Gi
+```