ChubaoFS (储宝文件系统 in Chinese) is a cloud-native storage platform that provides both POSIX-compliant and S3-compatible interfaces. It is hosted by the Cloud Native Computing Foundation (CNCF) as a sandbox project.

ChubaoFS has been commonly used as the underlying storage infrastructure for online applications, database or data processing services and machine learning jobs orchestrated by Kubernetes. An advantage of doing so is to separate storage from compute - one can scale up or down based on the workload and independent of the other, providing total flexibility in matching resources to the actual storage and compute capacity required at any given time.

Some key features of ChubaoFS include:

• Scale-out metadata management

• Strong replication consistency

• Specific performance optimizations for large/small files and sequential/random writes

• Multi-tenancy

• POSIX-compatible and mountable

• S3-compatible object storage interface

We are committed to making ChubaoFS better and more mature. Please stay tuned.

https://chubaofs.readthedocs.io/en/latest/

https://chubaofs.readthedocs.io/zh_CN/latest/

Small file operation performance and scalability benchmark test by mdtest.

Refer to chubaofs.readthedocs.io for performance and scalability of IO and Metadata.

$ git clone http://github.com/chubaofs/chubaofs.git
$ cd chubaofs
$ make

The list of RPM packages dependencies can be installed with:

$ yum install http://storage.jd.com/chubaofsrpm/latest/cfs-install-latest-el7.x86_64.rpm
$ cd /cfs/install
$ tree -L 2
.
├── install_cfs.yml
├── install.sh
├── iplist
├── src
└── template
    ├── client.json.j2
    ├── create_vol.sh.j2
    ├── datanode.json.j2
    ├── grafana
    ├── master.json.j2
    └── metanode.json.j2

Set parameters of the ChubaoFS cluster in iplist.

1. [master], [datanode], [metanode], [monitor], [client] modules define IP addresses of each role.

2. #datanode config module defines parameters of DataNodes. datanode_disks defines path and reserved space separated by ":". The path is where the data store in, so make sure it exists and has at least 30GB of space; reserved space is the minimum free space(Bytes) reserved for the path.

3. [cfs:vars] module defines parameters for SSH connection. So make sure the port, username and password for SSH connection is unified before start.

4. #metanode config module defines parameters of MetaNodes. metanode_totalMem defines the maximum memory(Bytes) can be use by MetaNode process.

[master]
10.196.0.1
10.196.0.2
10.196.0.3
[datanode]
...
[cfs:vars]
ansible_ssh_port=22
ansible_ssh_user=root
ansible_ssh_pass="password"
...
#datanode config
...
datanode_disks =  '"/data0:10737418240","/data1:10737418240"'
...
#metanode config
...
metanode_totalMem = "28589934592"
...

For more configurations please refer to documentation.

Start the resources of ChubaoFS cluster with script install.sh. (make sure the Master is started first)

$ bash install.sh -h
Usage: install.sh [-r --role datanode or metanode or master or monitor or client or all ] [-v --version 1.5.1 or latest]
$ bash install.sh -r master
$ bash install.sh -r metanode
$ bash install.sh -r datanode
$ bash install.sh -r monitor
$ bash install.sh -r client

Check mount point at /cfs/mountpoint on client node defined in iplist.

Open http://10.196.0.1:8500 through a browser for monitoring system(the IP of monitoring system is defined in iplist).

A helper tool called run_docker.sh (under the docker directory) has been provided to run ChubaoFS with docker-compose.

$ docker/run_docker.sh -r -d /data/disk

Note that /data/disk can be any directory but please make sure it has at least 10G available space.

To check the mount status, use the mount command in the client docker shell:

$ mount | grep chubaofs

To view grafana monitor metrics, open http://127.0.0.1:3000 in browser and login with admin/123456.

To run server and client separately, use the following commands:

$ docker/run_docker.sh -b
$ docker/run_docker.sh -s -d /data/disk
$ docker/run_docker.sh -c
$ docker/run_docker.sh -m

For more usage:

$ docker/run_docker.sh -h

The chubaofs-helm repository can help you deploy ChubaoFS cluster quickly in containers orchestrated by kubernetes. Kubernetes 1.16+ and Helm 3 are required.

Initialize Helm:

$ helm init

Add repository to download Helm chart of ChubaoFS:

$ helm repo add chubaofs https://chubaofs.github.io/chubaofs-charts
$ helm repo update

Create the configuration file chubaofs.yaml and put it in a user-defined path.

$ cat ~/chubaofs.yaml 

path:
  data: /chubaofs/data
  log: /chubaofs/log

datanode:
  disks:
    - disk: "/data0:21474836480"
    - disk: "/data1:21474836480"
      
metanode:
  total_mem: "2147483648"

Note that chubaofs-helm/chubaofs/values.yaml includes all the parameters of ChubaoFS. Parameters path.data and path.log define paths to store the data and logs of ChubaoFS server, respectively.

Label the nodes in Kubernetes according to different roles(master/metanode/datanode):

$ kubectl label node <nodename> chuabaofs-master=enabled
$ kubectl label node <nodename> chuabaofs-metanode=enabled
$ kubectl label node <nodename> chuabaofs-datanode=enabled

Install ChubaoFS cluster with Helm:

$ helm install chubaofs chubaofs/chubaofs --version 1.5.0 -f ~/chubaofs.yaml

Delete ChubaoFS cluster:

$ helm delete chubaofs

Refer to chubaofs-helm for deployment with Helm 2 and deployment of monitoring system.

ChubaoFS is licensed under the Apache License, Version 2.0. For detail see LICENSE and NOTICE.

Haifeng Liu, et al., CFS: A Distributed File System for Large Scale Container Platforms. SIGMOD‘19, June 30-July 5, 2019, Amsterdam, Netherlands.

For more information, please refer to https://dl.acm.org/citation.cfm?doid=3299869.3314046 and https://arxiv.org/abs/1911.03001

• Twitter: @ChubaoFS
• Mailing list: chubaofs-users@groups.io
• Slack: chubaofs.slack.com