Deploy and use JuiceFS to store data on DigitalOcean

What is JuiceFS


1. Cloud Server


Operating System

2. Object Storage

3. Database

Installation and Use

1. Install JuiceFS client

$ JFS_LATEST_TAG=$(curl -s | grep 'tag_name' | cut -d '"' -f 4 | tr -d 'v')
$ wget "${JFS_LATEST_TAG}/juicefs-${JFS_LATEST_TAG}-linux-amd64.tar.gz"
$ mkdir juice && tar -zxvf "juicefs-${JFS_LATEST_TAG}-linux-amd64.tar.gz" -C juice
$ sudo install juice/juicefs /usr/local/bin
$ juicefs
juicefs - A POSIX file system built on Redis and object storage.
juicefs [global options] command [command options] [arguments...]
0.17.0 (2021-09-24T04:17:26Z e115dc4)
format format a volume
mount mount a volume
umount unmount a volume
gateway S3-compatible gateway
sync sync between two storage
rmr remove directories recursively
info show internal information for paths or inodes
bench run benchmark to read/write/stat big/small files
gc collect any leaked objects
fsck Check consistency of file system
profile analyze access log
stats show runtime statistics
status show status of JuiceFS
warmup build cache for target directories/files
dump dump metadata into a JSON file
load load metadata from a previously dumped JSON file
help, h Shows a list of commands or help for one command
--verbose, --debug, -v enable debug log (default: false)
--quiet, -q only warning and errors (default: false)
--trace enable trace log (default: false)
--no-agent Disable pprof (:6060) and gops (:6070) agent (default: false)
--help, -h show help (default: false)
--version, -V print only the version (default: false)

2. Create a file system

juicefs format [command options] META-URL NAME
juicefs format \
--storage space \
--bucket \
--access-key <your-access-key-id> \
--secret-key <your-access-key-secret> \
rediss:// \
  • --storage: Specify the data storage engine, here is space, click here to view all supported storage.
  • --bucket: Specify the bucket access address.
  • --access-key and --secret-key: Specify the secret key for accessing the object storage API.
  • The Redis cluster managed by DigitalOcean needs to be accessed with TLS/SSL encryption, so it needs to use the rediss:// protocol header. The /1 added at the end of the link represents the use of Redis's No. 1 database.
2021/08/23 16:36:28.450686 juicefs[2869028] <INFO>: Meta address: rediss://
2021/08/23 16:36:28.481251 juicefs[2869028] <WARNING>: AOF is not enabled, you may lose data if Redis is not shutdown properly.
2021/08/23 16:36:28.481763 juicefs[2869028] <INFO>: Ping redis: 331.706µs
2021/08/23 16:36:28.482266 juicefs[2869028] <INFO>: Data uses space://juicefs/mystor/
2021/08/23 16:36:28.534677 juicefs[2869028] <INFO>: Volume is formatted as {Name:mystor UUID:6b0452fc-0502-404c-b163-c9ab577ec766 Storage:space Bucket: AccessKey:7G7WQBY2QUCBQC5H2DGK SecretKey:removed BlockSize:4096 Compression:none Shards:0 Partitions:0 Capacity:0 Inodes:0 EncryptKey:}

3. Mount a file system

$ sudo juicefs mount -d \
rediss:// mnt
2021/08/23 16:39:14.202151 juicefs[2869081] <INFO>: Meta address: rediss://
2021/08/23 16:39:14.234925 juicefs[2869081] <WARNING>: AOF is not enabled, you may lose data if Redis is not shutdown properly.
2021/08/23 16:39:14.235536 juicefs[2869081] <INFO>: Ping redis: 446.247µs
2021/08/23 16:39:14.236231 juicefs[2869081] <INFO>: Data use space://juicefs/mystor/
2021/08/23 16:39:14.236540 juicefs[2869081] <INFO>: Disk cache (/var/jfsCache/6b0452fc-0502-404c-b163-c9ab577ec766/): capacity (1024 MB), free ratio (10%), max pending pages (15)
2021/08/23 16:39:14.738416 juicefs[2869081] <INFO>: OK, mystor is ready at mnt
$ df -Th
File system type capacity used usable used% mount point
JuiceFS:mystor fuse.juicefs 1.0P 64K 1.0P 1% /home/herald/mnt
$ sudo juicefs mount -d --cache-size 20000 \
rediss:// mnt

4. File system status

$ juicefs status rediss://
2021/08/23 16:48:48.567046 juicefs[2869156] <INFO>: Meta address: rediss://
2021/08/23 16:48:48.597513 juicefs[2869156] <WARNING>: AOF is not enabled, you may lose data if Redis is not shutdown properly.
2021/08/23 16:48:48.598193 juicefs[2869156] <INFO>: Ping redis: 491.003µs
"Setting": {
"Name": "mystor",
"UUID": "6b0452fc-0502-404c-b163-c9ab577ec766",
"Storage": "space",
"Bucket": "",
"AccessKey": "7G7WQBY2QUCBQC5H2DGK",
"SecretKey": "removed",
"BlockSize": 4096,
"Compression": "none",
"Shards": 0,
"Partitions": 0,
"Capacity": 0,
"Inodes": 0
"Sessions": [
"Sid": 1,
"Heartbeat": "2021-08-23T16:46:14+08:00",
"Version": "0.16.2 (2021-08-25T04:01:15Z 29d6fee)",
"Hostname": "ubuntu-s-1vcpu-1gb-sgp1-01",
"MountPoint": "/home/herald/mnt",
"ProcessID": 2869091
"Sid": 2,
"Heartbeat": "2021-08-23T16:47:59+08:00",
"Version": "0.16.2 (2021-08-25T04:01:15Z 29d6fee)",
"Hostname": "ubuntu-s-1vcpu-1gb-sgp1-01",
"MountPoint": "/home/herald/mnt",
"ProcessID": 2869146

5. Unmount a file system

$ sudo juicefs umount ~/mnt

6. Auto-mount on boot

$ sudo cp /usr/local/bin/juicefs /sbin/mount.juicefs
rediss://    /home/herald/mnt       juicefs     _netdev,cache-size=20480     0  0

7. Multi-host shared


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