▍GlusterFS¶

192.168.0.2 gfs01
192.168.0.3 gfs02
192.168.0.4 gfs03

cd /srv
sudo dd if=/dev/zero of=glusterfs.img bs=1M count=100000 oflag=direct status=progress
sudo mkfs.xfs /srv/glusterfs.img
sudo mkdir -p /glusterfs
sudo echo '/srv/glusterfs.img /glusterfs xfs defaults 1 2' >> /etc/fstab
sudo systemctl daemon-reload
sudo mount -a
sudo mkdir /glusterfs/br0

$ df
Filesystem      Size  Used Avail Use% Mounted on
...
/dev/loop0       98G  730M   97G   1% /data/brick1
...

---
- name: Install GlusterFS server & client
  ansible.builtin.apt:
    pkg:
      - glusterfs-server
      - glusterfs-client
    state: present
    update_cache: true
  register: service_install

- name: Restart GlusterFS
  ansible.builtin.service:
    name: glusterd
    state: restarted
    enabled: yes
  when: service_install.changed

- name: Create a trusted storage pool
  gluster.gluster.gluster_peer:
    state: present
    nodes:
      - 192.168.0.2
      - 192.168.0.3
      - 192.168.0.4

- name: Create gluster volume
  gluster.gluster.gluster_volume:
    state: present
    name: g0
    bricks: /glusterfs/br0
    replicas: 3
    cluster:
      - 192.168.0.2
      - 192.168.0.3
      - 192.168.0.4
  run_once: true

- name: Start gluster volume
  gluster.gluster.gluster_volume:
    state: started
    name: g0

sudo mkdir /srv/gfsvol

gfs01:/g0 /srv/gfsvol glusterfs defaults,_netdev,backupvolfile-server=gfs02:gfs03 0 0

gfs02:/g0 /srv/gfsvol glusterfs defaults,_netdev,backupvolfile-server=gfs01:gfs03 0 0

gfs03:/g0 /srv/gfsvol glusterfs defaults,_netdev,backupvolfile-server=gfs01:gfs02 0 0

sudo mount -a

└─> sudo gluster pool list
UUID                                    Hostname        State
f89876e3-656d-474a-8e3e-7f850bb25958    gfs01           Connected 
8a893deb-35fb-4dbc-aa51-f4f2ea45daae    gfs02           Connected 
a3c744a7-9943-42ba-aa52-05841b3443e5    gfs03           Connected 

└─> sudo gluster volume info

Volume Name: g0
Type: Replicate
Volume ID: e55a6943-c2e1-4782-bddf-b5941e442695
Status: Started
Snapshot Count: 0
Number of Bricks: 1 x 3 = 3
Transport-type: tcp
Bricks:
Brick1: 192.168.0.2:/glusterfs/br0
Brick2: 192.168.0.3:/glusterfs/br0
Brick3: 192.168.0.4:/glusterfs/br0
Options Reconfigured:
performance.cache-size: 256MB
cluster.granular-entry-heal: on
storage.fips-mode-rchecksum: on
transport.address-family: inet
nfs.disable: on
performance.client-io-threads: off

└─> sudo gluster volume status
Status of volume: g0
Gluster process                             TCP Port  RDMA Port  Online  Pid
------------------------------------------------------------------------------
Brick 192.168.0.2:/glusterfs/br0           52792     0          Y       2316064
Brick 192.168.0.3:/glusterfs/br0           52317     0          Y       3010561
Brick 192.168.0.4:/glusterfs/br0            53749     0          Y       4101140

Task Status of Volume g0
------------------------------------------------------------------------------
There are no active volume tasks

sudo gluster volume heal g0 info