[CEPH] Building a Ceph Cluster environment in CentOS 8 Stream - woodev.co

Install Package and Cephadm

rpm-18.2.0은 원하는 ceph version으로 변경

--release reef는 원하는 ceph version으로 변경

dnf search release-ceph
dnf install --assumeyes centos-release-ceph-reef
dnf install --assumeyes cephadm

curl --silent --remote-name --location https://download.ceph.com/rpm-18.2.0/el8/noarch/cephadm
chmod +x cephadm

./cephadm add-repo --release reef
./cephadm install

 

Run Cephadm Bootstrap

cephadm bootstrap --mon-ip *<mon-ip>*

cephadm install ceph-common

ssh-copy-id -f -i /etc/ceph/ceph.pub root@{Host IP}
cephadm shell -- ceph config-key get mgr/cephadm/ssh_identity_key > ~/cephadm_private_key
cephadm shell -- ceph cephadm get-ssh-config > config
ssh -F config -i ~/cephadm_private_key root@{Host IP}

 

Add Ceph Host and Label

ceph orch host add <newhostname> <newhostip>
ceph orch host label add <my_hostname> <my_label>
ceph orch host add <newhostname> <newhostip> --labels _admin

 

Add Ceph MGR and OSD

ceph orch apply mgr --placement="HOSTNAME1 HOSTNAME2 HOSTNAME3"
ceph orch device ls --refresh
ceph orch apply osd --all-available-devices

 

Reset Ceph OSD disk

Disk는 "/dev/sdb"라고 가정

이전에 Ceph를 설치한 이력이 있는 Node라면 수행 필요

sgdisk --zap-all /dev/sdb
dd if=/dev/zero of=/dev/sdb bs=1M count=100 oflag=direct,dsync
blkdiscard /dev/sdb

ls /dev/mapper/ceph-* | xargs -I% -- dmsetup remove %
rm -rf /dev/ceph-*