使用ansible部署ceph集羣

基礎配置

三臺環境爲centos7.9，以下配置需要在每臺機器上執行

配置hosts解析

cat >> /etc/hosts <<EOF
192.168.2.23 node1
192.168.2.24 node2
192.168.2.25 node3
EOF

關閉防火牆和selinux

systemctl stop firewalld && systemctl disable firewalld
setenforce 0 && sed -i 's/SELINUX=enforcing/SELINUX=disabled/g' /etc/selinux/config

分別在三個節點設置主機名

hostnamectl set-hostname node1
hostnamectl set-hostname node2
hostnamectl set-hostname node3

配置主機時間同步

systemctl restart chronyd.service && systemctl enable chronyd.service

配置免密登錄

ssh-keygen
ssh-copy-id -i .ssh/id_rsa.pub node1
ssh-copy-id -i .ssh/id_rsa.pub node2
ssh-copy-id -i .ssh/id_rsa.pub node3

安裝pip和ansible、git

yum install python-pip ansible git -y

部署ceph集羣

克隆存儲庫

這裏我選擇安裝的是ceph nautilus版本

git clone https://github.com/ceph/ceph-ansible.git
cd ceph-ansible
git checkout stable-4.0

安裝ansible依賴包

pip install --upgrade pip
pip install -r requirements.txt

修改hosts文件，添加安裝的節點

cat >> /etc/ansible/hosts <<EOF
[mons]
node1
node2
node3

[osds]
node1
node2
node3

[mgrs]
node1

[mdss]
node1
node2
node3

[clients]
node1
node2
node3

[rgws]
node1
node2
node3

[grafana-server]
node1

EOF

備份group_vars下的yml文件

cd ceph-ansible/group_vars
for file in *;do cp $file ${file%.*};done

修改group_vars/all.yml配置

---
dummy:
mon_group_name: mons
osd_group_name: osds
rgw_group_name: rgws
mds_group_name: mdss
client_group_name: clients
mgr_group_name: mgrs
grafana_server_group_name: grafana-server
configure_firewall: False
ceph_origin: repository
ceph_origin: repository
ceph_repository: community
ceph_mirror: http://mirrors.aliyun.com/ceph
ceph_stable_key: http://mirrors.aliyun.com/ceph/keys/release.asc
ceph_stable_release: nautilus
ceph_stable_repo: "{{ ceph_mirror }}/rpm-{{ ceph_stable_release }}"
public_network: "192.168.2.0/24"
cluster_network: "192.168.2.0/24"
monitor_interface: ens33
osd_auto_discovery: true
osd_objectstore: filestore
radosgw_interface: ens33
dashboard_admin_password: asd123456
grafana_admin_password: admin
pg_autoscale_mode: True

修改group_vars/osds.yml配置

devices:
  - /dev/sdb

修改site.yml配置

開始進行安裝

剩下的交給時間吧，十分鐘左右就裝好了

ansible-playbook -i /etc/ansible/hosts site.yml

查看安裝狀態，發現有一個警告，這是因爲在之前的all.yml配置沒有開啓允許自動調整pool中的pg數pg_autoscale_mode: False，手動設置下即可

ceph osd pool set <pool-name> pg_autoscale_mode on

---

歡迎關注個人公號“運維開發故事”