ceph cluster 部署（ceph-ansible）

版本

ceph版本	os支持版本	ceph-ansible支持版本
pacific （16）	CentOS 8	stable-6.0
octopus （15）	CentOS 8 & CentOS 7	stable-5.0

admin

hostname	category	hardware	eth0 - public	eth1	eth2 - cluster	eth3	gateway
vm-210	deploy	core*4 / 4g / 20GB	192.168.100.210	10.0.100.210	10.0.110.210	10.0.120.210	192.168.100.1

ceph

hostname	category	hardware	eth0 - public	eth1	eth2 - cluster	eth3	gateway
vm-201	ceph-mon	core*1 / 2g / 20GB	192.168.100.201	10.0.100.201	10.0.110.201	10.0.120.201	192.168.100.1
vm-202	ceph-mon	core*1 / 2g / 20GB	192.168.100.202	10.0.100.202	10.0.110.202	10.0.120.202	192.168.100.1
vm-203	ceph-mon	core*1 / 2g / 20GB	192.168.100.203	10.0.100.203	10.0.110.203	10.0.120.203	192.168.100.1
vm-204	ceph-osd	core*4 / 4g / 20GB,10GBx2,30GBx4	192.168.100.204	10.0.100.204	10.0.110.204	10.0.120.204	192.168.100.1
vm-205	ceph-osd	core*4 / 4g / 20GB,10GBx2,30GBx4	192.168.100.205	10.0.100.205	10.0.110.205	10.0.120.205	192.168.100.1
vm-206	ceph-osd	core*4 / 4g / 20GB,10GBx2,30GBx4	192.168.100.206	10.0.100.206	10.0.110.206	10.0.120.206	192.168.100.1

在admin操作所有步骤

1. 静态指向

cat > /etc/hosts <<EOF
127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
::1         localhost localhost.localdomain localhost6 localhost6.localdomain6

# admin
192.168.100.210 vm-210

# openstack
192.168.100.211 vm-211
192.168.100.212 vm-212
192.168.100.213 vm-213
192.168.100.214 vm-214
192.168.100.215 vm-215
192.168.100.216 vm-216
192.168.100.217 vm-217
192.168.100.218 vm-218
192.168.100.219 vm-219

# k8s
192.168.100.191 vm-191
192.168.100.192 vm-192
192.168.100.193 vm-193
192.168.100.194 vm-194
192.168.100.195 vm-195
192.168.100.196 vm-196
192.168.100.197 vm-197
192.168.100.207 vm-207
192.168.100.198 vm-198

# ceph
192.168.100.201 vm-201
192.168.100.202 vm-202
192.168.100.203 vm-203
192.168.100.204 vm-204
192.168.100.205 vm-205
192.168.100.206 vm-206
EOF

2. ssh信任登录

ssh-keygen -b 1024 -t rsa -P '' -f ~/.ssh/id_rsa

for i in {201..206}; do ssh-copy-id -i .ssh/id_rsa.pub vm-$i; done

3. ceph-ansible

git clone https://github.com/ceph/ceph-ansible.git
cd ceph-ansible
git checkout  stable-5.0 

# 或者从镜像站下载  git clone -b stable-5.0 https://hub.fastgit.org/ceph/ceph-ansible.git

pip3 install pip -U
pip3 config set global.index-url https://pypi.tuna.tsinghua.edu.cn/simple
pip3 install -r requirements.txt 

cp group_vars/all.yml.sample group_vars/all.yml
cp group_vars/osds.yml.sample group_vars/osds.yml
cp site.yml.sample site.yml
cp site-container.yml.sample site-container.yml

4. ansible hosts

cat >> inventory <<EOF
[mons]
vm-[201:203]

[mgrs]
vm-[201:203]

[grafana-server]
vm-[201:203]

[rgws]
vm-[201:203]

[osds]
vm-[204:206]
EOF

ansible -i inventory all -m copy -a 'src=/etc/hosts dest=/etc/hosts'
ansible -i inventory osds -m shell -a 'pip3 install --index https://pypi.tuna.tsinghua.edu.cn/simple six pyyaml'
ansible -i inventory mons -m shell -a 'pip3 install --index https://pypi.douban.com/simple pecan werkzeug && reboot'

5. ceph-ansibles group_vars/all.yml

cat > group_vars/all.yml << EOF
---
dummy:
cluster: ceph

mon_group_name: mons
osd_group_name: osds
rgw_group_name: rgws
mds_group_name: mdss
nfs_group_name: nfss
rbdmirror_group_name: rbdmirrors
client_group_name: clients
iscsi_gw_group_name: iscsigws
mgr_group_name: mgrs
rgwloadbalancer_group_name: rgwloadbalancers
grafana_server_group_name: grafana-server

configure_firewall: false
ceph_test: false
upgrade_ceph_packages: False

ceph_origin: repository
ceph_repository: community
ceph_mirror: https://mirrors.nju.edu.cn/ceph
ceph_stable_key: "{{ ceph_mirror }}/keys/release.asc"
ceph_stable_release: octopus
ceph_stable_repo: "{{ ceph_mirror }}/rpm-{{ ceph_stable_release }}"

nfs_ganesha_stable: true
nfs_ganesha_stable_branch: V2.8-stable
nfs_ganesha_stable_deb_repo: "{{ ceph_mirror }}/nfs-ganesha/rpm-{{ nfs_ganesha_stable_branch }}/{{ ceph_stable_release }}"

generate_fsid: true
ceph_conf_key_directory: /etc/ceph
cephx: true
monitor_interface: eth0
public_network: 192.168.100.0/24
cluster_network: 10.0.110.0/24


radosgw_interface: eth0
radosgw_num_instances: 1

dashboard_enabled: false
dashboard_protocol: http
dashboard_port: 8443
dashboard_admin_user: admin
dashboard_admin_user_ro: false
dashboard_admin_password: admin
grafana_admin_user: admin
grafana_admin_password: admin

ceph_conf_overrides:
    global:
      rbd_default_features: 7
      auth cluster required: cephx
      auth service required: cephx
      auth client required: cephx
      osd journal size: 2048
      osd pool default size: 3
      osd pool default min size: 1
      mon_pg_warn_max_per_osd: 1024
      osd pool default pg num: 128
      osd pool default pgp num: 128
      max open files: 131072
      osd_deep_scrub_randomize_ratio: 0.01

    mgr:
      mgr modules: dashboard

    mon:
      mon_allow_pool_delete: true

    client:
      rbd_cache: true
      rbd_cache_size: 335544320
      rbd_cache_max_dirty: 134217728
      rbd_cache_max_dirty_age: 10

    osd:
      osd mkfs type: xfs
      ms_bind_port_max: 7100
      osd_client_message_size_cap: 2147483648
      osd_crush_update_on_start: true
      osd_deep_scrub_stride: 131072
      osd_disk_threads: 4
      osd_map_cache_bl_size: 128
      osd_max_object_name_len: 256
      osd_max_object_namespace_len: 64
      osd_max_write_size: 1024
      osd_op_threads: 8

      osd_recovery_op_priority: 1
      osd_recovery_max_active: 1
      osd_recovery_max_single_start: 1
      osd_recovery_max_chunk: 1048576
      osd_recovery_threads: 1
      osd_max_backfills: 4
      osd_scrub_begin_hour: 23
      osd_scrub_end_hour: 7
EOF

6. ceph-ansibles group_vars/osds.yml

# ssd: sdb,sdb
# sas: sdc,sdd,sde,sdf
cat > group_vars/osds.yml <<EOF
---
devices:
  - /dev/sdc
  - /dev/sdd
  - /dev/sde
  - /dev/sdf
dedicated_devices:
   - /dev/sdb
bluestore_wal_devices:
   - /dev/sdg

osd_auto_discovery: false
osd_scenario: collocated
osd_objectstore: bluestore
EOF

7. 安装

ansible -i inventory all -m ping
ansible-playbook -i inventory site.yml

8. ceph dashboard

yum install -y ceph-mgr-dashboard

ceph mgr module enable dashboard
ceph dashboard create-self-signed-cert

ceph config set mgr mgr/dashboard/server_addr vm-202
ceph config set mgr mgr/dashboard/server_port 8443
ceph config set mgr mgr/dashboard/ssl_server_port 8443

echo 'password' > passwd
ceph dashboard ac-user-create admin -i passwd administrator

ceph -s 出现错误提示： mons are allowing insecure global_id reclaim
ceph config set mon auth_allow_insecure_global_id_reclaim false

ceph -s 出现错误提示：Module 'restful' has failed dependency: No module named 'pecan'
pip3 install pecan werkzeug && reboot