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Kadalu Storage - Quick Start

Introduction

Kadalu Storage is a distributed filesystem management system. At its core, Kadalu uses the GlusterFS filesystem.

Installation

This guide assumes you will create a replica 3 (1x3) cluster using three nodes. The steps are the same if you plan to use a single node.

Add Kadalu Storage repository using the below commands.

curl -sL --compressed "https://kadalu.tech/pkgs/1/ubuntu/20.04/KEY.gpg" | sudo apt-key add -
sudo curl -sL --compressed -o /etc/apt/sources.list.d/kadalu_storage.list "https://kadalu.tech/pkgs/1/ubuntu/20.04/sources.list"
sudo apt update

Install the latest Kadalu Storage packages on all the nodes.
```
$ sudo apt install kadalu-storage
```

Service Setup

Enable and start the kadalu-mgr service on all the storage nodes.

$ sudo systemctl enable kadalu-mgr
$ sudo systemctl start kadalu-mgr

Create a user and login

Users can be created in any one of the storage nodes or in any dedicated node other than the storage nodes.

$ kadalu user create admin
Password:
User admin created successfully

$ kadalu user login admin
Password:
Login successful. Details saved in `/root/.kadalu/session`. Delete this file or run `kadalu logout` command to delete the session.

Create a pool and add storage nodes

The following commands are run from the storage manager (which can be one of the storage nodes or any separate node) which was chosen in the previous step.

Note: The below steps 1 and 2 can be skipped and can be done as part of volume create by passing --auto-add-nodes and --auto-create-pool during volume create command.

Step 1:

Create a pool

$ kadalu pool create DEV
Pool DEV created successfully
ID: 2a643b56-3fd9-4782-882a-3915853d67a7

$ kadalu pool list
Name  ID
DEV   2a643b56-3fd9-4782-882a-3915853d67a7

Step 2:

Add nodes to the pool

$ kadalu node add DEV/vm1
Node vm1 added to DEV successfully
ID: 710acd83-d3aa-4292-b362-543599d12edf
$
$ kadalu node add DEV/vm2
Node vm2 added to DEV successfully
ID: dfed8210-53d4-44e6-8a8b-7abe3fddb145
$
$ kadalu node add DEV/vm3
Node vm3 added to DEV successfully
ID: 9ac5d869-9542-4dac-9c88-97cfb11a5738
$ kadalu node list
Name     ID                                    Endpoint
DEV/vm3  9ac5d869-9542-4dac-9c88-97cfb11a5738  http://vm3:3000
DEV/vm2  dfed8210-53d4-44e6-8a8b-7abe3fddb145  http://vm2:3000
DEV/vm1  710acd83-d3aa-4292-b362-543599d12edf  http://vm1:3000

Create a storage volume

Now create a directory to use as a storage unit and create a Kadalu Storage Volume.

$ sudo mkdir /data/t2     (Run on all the storage nodes)
$
$ kadalu volume create DEV/Test-Vol replica 3 vm1:/data/t2 vm2:/data/t2 vm3:/data/t2
Volume Test-Vol created successfully
ID: 59a726ad-0010-4a4f-ac4d-b11e54e722d7
$
$ kadalu volume list
Name          ID                                    State    Type          Size  Inodes
DEV/Test-Vol  59a726ad-0010-4a4f-ac4d-b11e54e722d7  Started  Replicate  50.0GiB   26.2M

Note: The above command can be written as:

$ kadalu volume create DEV/Test-Vol replica 3 vm1:/data/t2 vm2:/data/t2 vm3:/data/t2 --auto-add-nodes --auto-create-pool

And the steps to create pool and node addition can be skipped.

Mount the volume

$ sudo mkdir /mnt/kadalu_vol
$ sudo mount -t kadalu vm1:DEV/Test-Vol /mnt/kadalu_vol/
$ df -h /mnt/kadalu_vol/
Filesystem           Size  Used Avail Use% Mounted on
kadalu:/Test-Vol   30G  554M   30G   2% /mnt/kadalu_vol

Community

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