ceph SSD HDD分离与openstack调用

本例子ceph L版本采用的是filestore，而不是bluestore.

一、查看class类型，只有一个hdd，。Luminous 为每个OSD添加了一个新的属性：设备类。默认情况下，OSD将根据Linux内核公开的硬件属性自动将其设备类设置为HDD、SSD或NVMe（如果尚未设置）。这些设备类在ceph osd tree 中列出(实验环境无ssd硬盘，生产环境有ssd可以直接认到并自动创建ssd class，不需要第二步到第四步) , 修改前集群拓扑：

[ ceph-install]# ceph osd tree

ID CLASS WEIGHT TYPE NAME STATUS REWEIGHT PRI-AFF

-1 0.76163 root default

-9 0.25388 rack rack01

-3 0.25388 host ceph1

0 hdd 0.07809 osd.0 up 1.00000 1.00000

1 hdd 0.07809 osd.1 up 1.00000 1.00000

6 hdd 0.09769 osd.6 up 1.00000 1.00000

-10 0.25388 rack rack02

-5 0.25388 host ceph2

2 hdd 0.07809 osd.2 up 1.00000 1.00000

3 hdd 0.07809 osd.3 up 1.00000 1.00000

7 hdd 0.09769 osd.7 up 1.00000 1.00000

-11 0.25388 rack rack03

-7 0.25388 host ceph3

4 hdd 0.07809 osd.4 up 1.00000 1.00000

5 hdd 0.07809 osd.5 up 1.00000 1.00000

8 hdd 0.09769 osd.8 up 1.00000 1.00000

二、将osd.6 osd.7 osd.8 从class hdd解开

[ ceph-install]# ceph osd crush rm-device-class osd.6

done removing class of osd(s): 6

[ ceph-install]# ceph osd tree

ID CLASS WEIGHT TYPE NAME STATUS REWEIGHT PRI-AFF

-1 0.76163 root default

-9 0.25388 rack rack01

-3 0.25388 host ceph1

6 0.09769 osd.6 up 1.00000 1.00000

0 hdd 0.07809 osd.0 up 1.00000 1.00000

1 hdd 0.07809 osd.1 up 1.00000 1.00000

-10 0.25388 rack rack02

-5 0.25388 host ceph2

2 hdd 0.07809 osd.2 up 1.00000 1.00000

3 hdd 0.07809 osd.3 up 1.00000 1.00000

7 hdd 0.09769 osd.7 up 1.00000 1.00000

-11 0.25388 rack rack03

-7 0.25388 host ceph3

4 hdd 0.07809 osd.4 up 1.00000 1.00000

5 hdd 0.07809 osd.5 up 1.00000 1.00000

8 hdd 0.09769 osd.8 up 1.00000 1.00000

[ ceph-install]# ceph osd crush rm-device-class osd.7

[ ceph-install]# ceph osd crush rm-device-class osd.8

三、将osd.6 osd.7 osd.8 加入到class ssd

[ ceph-install]# ceph osd crush set-device-class ssd osd.6

[ ceph-install]# ceph osd crush set-device-class ssd osd.7

[ ceph-install]# ceph osd crush set-device-class ssd osd.8

[ ceph]# ceph osd tree

ID CLASS WEIGHT TYPE NAME STATUS REWEIGHT PRI-AFF

-1 0.76163 root default

-9 0.25388 rack rack01

-3 0.25388 host ceph1

0 hdd 0.07809 osd.0 up 1.00000 1.00000

1 hdd 0.07809 osd.1 up 1.00000 1.00000

6 ssd 0.09769 osd.6 up 1.00000 1.00000

-10 0.25388 rack rack02

-5 0.25388 host ceph2

2 hdd 0.07809 osd.2 up 1.00000 1.00000

3 hdd 0.07809 osd.3 up 1.00000 1.00000

7 ssd 0.09769 osd.7 up 1.00000 1.00000

-11 0.25388 rack rack03

-7 0.25388 host ceph3

4 hdd 0.07809 osd.4 up 1.00000 1.00000

5 hdd 0.07809 osd.5 up 1.00000 1.00000

8 ssd 0.09769 osd.8 up 1.00000 1.00000

四、查看class类型, 已经有2个class

[ ceph]# ceph osd crush class ls

[

"hdd",

"ssd"

]

五、创建个ssd规则

[ ceph]#ceph osd crush rule create-replicated rule-ssd default host ssd

[ ceph]# ceph osd crush rule ls

replicated_rule

rule-ssd

六、创建一个使用该rule-ssd规则的存储池：

[ ceph]#ceph osd pool create ssdpool 64 64 rule-ssd

查看pool

[ ceph]# ceph osd pool ls detail | grep ssdpool

pool 15 ‘ssdpool‘ replicated size 3 min_size 2 crush_rule 1 object_hash rjenkins pg_num 64 pgp_num 64 last_change 316 flags hashpspool stripe_width 0

更新client.cinder权限

[ ceph]#ceph auth caps client.cinder mon ‘allow r‘ osd ‘allow rwx pool=ssdpool,allow rwx pool=volumes, allow rwx pool=vms, allow rx pool=images‘

查看认证账号

[ ceph]# ceph auth list

installed auth entries:

mds.ceph1

key: AQDvL21d035tKhAAg6jY/iSoo511H+Psbp8xTw==

caps: [mds] allow

caps: [mon] allow profile mds

caps: [osd] allow rwx

osd.0

key: AQBzKm1dmT3FNhAAmsEpJv9I6CkYmD2Kfk3Wrw==

caps: [mgr] allow profile osd

caps: [mon] allow profile osd

caps: [osd] allow *

osd.1

key: AQCxKm1dfLZdIBAAVD/B9RdlTr3ZW7d39PuZ4g==

caps: [mgr] allow profile osd

caps: [mon] allow profile osd

caps: [osd] allow *

osd.2

key: AQCKK21dKPAbFhAA8yQ8v3/+kII5gAsNga/M+w==

caps: [mgr] allow profile osd

caps: [mon] allow profile osd

caps: [osd] allow *

osd.3

key: AQCtK21dHMZiBBAAoz7thWgs4sFHgPBTkd4pGw==

caps: [mgr] allow profile osd

caps: [mon] allow profile osd

caps: [osd] allow *

osd.4

key: AQDEK21dKL4XFhAAsx39rOmszOtVHfx/W/UMQQ==

caps: [mgr] allow profile osd

caps: [mon] allow profile osd

caps: [osd] allow *

osd.5

key: AQDZK21duaoQBBAAB1Vu1c3L8JNGj6heq6p2yw==

caps: [mgr] allow profile osd

caps: [mon] allow profile osd

caps: [osd] allow *

osd.6

key: AQAqG7Nd1dvbGxAA/H2w7FAVSWI2wSaU2TSCOw==

caps: [mgr] allow profile osd

caps: [mon] allow profile osd

caps: [osd] allow *

osd.7

key: AQCnIrRdAJHSFRAA+oDUal2jQR5Z3OxlB2UjZw==

caps: [mgr] allow profile osd

caps: [mon] allow profile osd

caps: [osd] allow *

osd.8

key: AQC8IrRdJb8ZMhAAm1SSjGFhl2PuwwpGaIdouQ==

caps: [mgr] allow profile osd

caps: [mon] allow profile osd

caps: [osd] allow *

client.admin

key: AQC6mmJdfBzyHhAAE1GazlHqH2uD35vpL6Do1w==

caps: [mds] allow *

caps: [mgr] allow *

caps: [mon] allow *

caps: [osd] allow *

client.bootstrap-mds

key: AQC7mmJdCG1wJBAAVmRYWiDqFSRCHVQhEUdGqQ==

caps: [mon] allow profile bootstrap-mds

client.bootstrap-mgr

key: AQC8mmJdVUCSIhAA8foLa1zmMmzNyBAkregvBw==

caps: [mon] allow profile bootstrap-mgr

client.bootstrap-osd

key: AQC9mmJd+n5JIxAAYpyAJRVbRnZBJBdpSPCAAA==

caps: [mon] allow profile bootstrap-osd

client.bootstrap-rgw

key: AQC+mmJdC+mxIBAAVVDJiKRyS+4vdX2r8nMOLA==

caps: [mon] allow profile bootstrap-rgw

client.cinder

key: AQDOdW5do2jzEhAA/v/VYEBHOUk440mpP6GMBg==

caps: [mon] allow r

caps: [osd] allow rwx pool=ssdpool,allow rwx pool=volumes, allow rwx pool=vms, allow rx pool=images

client.glance

key: AQAVdm5dojfsLxAAAtt+eX7psQC7pXpisqsvBg==

caps: [mon] allow r

caps: [osd] allow class-read object_prefix rbd_children, allow rwx pool=images

mgr.ceph1

key: AQAjMG1deO05IxAALhbrB66XWKVCjWXraUwL0w==

caps: [mds] allow *

caps: [mon] allow profile mgr

caps: [osd] allow *

mgr.ceph2

key: AQAkMG1dhl5COBAALHSHl0MXA5xvrQCCXzBR0g==

caps: [mds] allow *

caps: [mon] allow profile mgr

caps: [osd] allow *

mgr.ceph3

key: AQAmMG1dJ1fJFBAAF0is+UiuKZjwGRkBWg6W4A==

caps: [mds] allow *

caps: [mon] allow profile mgr

caps: [osd] allow *

七修改openstack cinder-volume增加配置，并创建volume

在/etc/cinder/cinder.conf添加以下内容，调用ceph2个pool，一个hdd，一个ssd

[DEFAULT]

enabled_backends = lvm,ceph,ssd

[ceph]

volume_driver = cinder.volume.drivers.rbd.RBDDriver

rbd_pool = volumes

rbd_ceph_conf = /etc/ceph/ceph.conf

rbd_flatten_volume_from_snapshot = false

rbd_max_clone_depth = 5

rbd_store_chunk_size = 4

rados_connect_timeout = -1

glance_api_version = 2

rbd_user = cinder

rbd_secret_uuid = fcb30733-4a1a-4635-ba07-9d89cf54a530

volume_backend_name=ceph

[ssd]

volume_driver = cinder.volume.drivers.rbd.RBDDriver

rbd_pool = ssdpool

rbd_ceph_conf = /etc/ceph/ceph.conf

rbd_flatten_volume_from_snapshot = false

rbd_max_clone_depth = 5

rbd_store_chunk_size = 4

rados_connect_timeout = -1

glance_api_version = 2

rbd_user = cinder

rbd_secret_uuid = fcb30733-4a1a-4635-ba07-9d89cf54a530

volume_backend_name=ssd

重启cinder-volume服务

systemctl restart openstack-cinder-volume.service

创建新的cinder-type

cinder type-create ssd

cinder type-key ssd set volume_backend_name=ssd

查询cinder-volume 是否启动成功

[ cinder]# openstack volume service list

+------------------+-----------------+------+---------+-------+----------------------------+

+------------------+-----------------+------+---------+-------+----------------------------+

+------------------+-----------------+------+---------+-------+----------------------------+

创建volume

[ cinder]# openstack volume create --type ssd --size 1 disk20191026

+---------------------+--------------------------------------+

| Field | Value |

+---------------------+--------------------------------------+

| attachments | [] |

| availability_zone | nova |

| bootable | false |

| consistencygroup_id | None |

| created_at | 2019-10-26T15:17:46.000000 |

| description | None |

| encrypted | False |

| id | ecff02cc-7d5c-42cc-986e-06e9552426db |

| migration_status | None |

| multiattach | False |

| name | disk20191026 |

| properties | |

| replication_status | None |

| size | 1 |

| snapshot_id | None |

| source_volid | None |

| status | creating |

| type | ssd |

| updated_at | None |

| user_id | f8b392b9ca95447c91913007d05ccc4f |

+---------------------+--------------------------------------+

[ cinder]# openstack volume list | grep disk20191026

在ceph检查volume是否在ssdpool创建的

[ ceph]# rbd -p ssdpool ls

volume-ecff02cc-7d5c-42cc-986e-06e9552426db

以上编号UID对应的

备注：

修改ceph配置就创建新的osd会用到以下命令：

ceph-deploy --overwrite-conf config push ceph1 ceph2 ceph3

ceph-deploy osd create ceph1 --data /dev/sde --journal /dev/sdf1

本例子的ceph.conf如下

[ ceph]# cat /etc/ceph/ceph.conf

[global]

fsid = 6bbab2f3-f90c-439d-86d7-9c0f3603303c

mon_initial_members = ceph1, ceph2, ceph3

mon_host = 172.16.3.61,172.16.3.62,172.16.3.63

auth_cluster_required = cephx

auth_service_required = cephx

auth_client_required = cephx

mon clock drift allowed = 10

mon clock drift warn backoff = 30

osd pool default pg num = 64

osd pool default pgp num = 64

osd_crush_update_on_start = false

ceph SSD HDD分离与openstack调用

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