Introduction

Adding a host

Adding storage

gluster volume add-brick VOLNAME NEW_BRICK

example

gluster volume add-brick test-volume server4:/exp4

Add Brick successful

Replacing failed host

Followed https://access.redhat.com/documentation/en-US/Red_Hat_Storage/3/html/Administration_Guide/sect-Replacing_Hosts.html

[root@glusterfs-server /]# gluster peer status Number of Peers: 1

Hostname: ds1 Uuid: db9c80da-11e4-461d-8ea5-66dd12ca897c State: Peer in Cluster (Disconnected) [root@glusterfs-server /]#

Grab UUID above

edit /var/lib/glusterd/glusterd.info change: UUID=aee45c2c-aa19-4d29-bc94-4833f2b22863 to UUID=db9c80da-11e4-461d-8ea5-66dd12ca897c

My peer's id (ds2): [root@glusterfs-server /]# gluster system:: uuid get UUID: 38ca4e8b-8ef5-4165-9f41-5c8b3f0103cc [root@glusterfs-server /]#

vi /var/lib/glusterd/peers/38ca4e8b-8ef5-4165-9f41-5c8b3f0103cc

UUID=38ca4e8b-8ef5-4165-9f41-5c8b3f0103cc state=3 hostname=ds3

Got volume info

[root@glusterfs-server /]# gluster volume info

Volume Name: gv0 Type: Replicate Volume ID: 84e1169c-41dc-467a-9ae1-a474efaf789f Status: Started Snapshot Count: 0 Number of Bricks: 1 x 2 = 2 Transport-type: tcp Bricks: Brick1: ds1:/var/no-direct-write-here/brick1/gv0 Brick2: ds3:/var/no-direct-write-here/brick1/gv0 Options Reconfigured: nfs.disable: on transport.address-family: inet [root@glusterfs-server /]#

[root@glusterfs-server /]# getfattr -d -m. -ehex /var/no-direct-write-here/brick1/gv0/ getfattr: Removing leading '/' from absolute path names

file: var/no-direct-write-here/brick1/gv0/

security.selinux=0x73797374656d5f753a6f626a6563745f723a756e6c6162656c65645f743a733000 trusted.gfid=0x00000000000000000000000000000001 trusted.glusterfs.dht=0x000000010000000000000000ffffffff trusted.glusterfs.volume-id=0x84e1169c41dc467a9ae1a474efaf789f

[root@glusterfs-server /]#

setfattr -n trusted.glusterfs.volume-id -v 0x84e1169c41dc467a9ae1a474efaf789f /var/no-direct-write-here/brick1/gv0

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