Centos stream 8 使用 cephadm 安装 Ceph (17.2.6 quincy)集群-Toy模板网

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一、环境

1、机器列表

名称	IP	角色	备注
cephnode120	10.0.49.120	_admin	双网卡双硬盘/sda/60G /sdb/160G
cephnode121	10.0.49.121	_storage	双网卡双硬盘/sda/60G /sdb/160G
cephnode122	10.0.49.122	_storage	双网卡双硬盘/sda/60G /sdb/160G

2 、软件环境

[root@cephnode120 ~]# cat /etc/redhat-release
CentOS Stream release 8

[root@cephnode120 ~]# python3 --version
Python 3.6.8

[root@cephnode120 ~]# chronyd --version
chronyd (chrony) version 4.2 

[root@cephnode120 ~]# docker version
Emulate Docker CLI using podman. Create /etc/containers/nodocker to quiet msg.
Client:       Podman Engine
Version:      4.3.1
API Version:  4.3.1
Go Version:   go1.19.4
Built:        Wed Feb  1 06:06:15 2023
OS/Arch:      linux/amd64

3、软件准备

centos8 因不再维护需将repos源换成阿里源

#备份旧的配置文件

mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup

#下载新的 CentOS-Base.repo 到 /etc/yum.repos.d/

wget -O /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-8.repo

#并替换部分字段（非阿里云机器需要做）

sed -i -e '/mirrors.cloud.aliyuncs.com/d' -e '/mirrors.aliyuncs.com/d' /etc/yum.repos.d/CentOS-Base.repo

#生成缓存

yum clean all&&yum makecache

#验证
[root@cephnode120 ~]# yum repolist
Repository extras is listed more than once in the configuration
仓库 id                                                                                仓库名称
AppStream                                                                              CentOS-8-stream - AppStream - mirrors.aliyun.com
Ceph                                                                                   Ceph x86_64
Ceph-noarch                                                                            Ceph noarch
Ceph-source                                                                            Ceph SRPMS
appstream                                                                              CentOS Stream 8 - AppStream
base                                                                                   CentOS-8-stream - Base - mirrors.aliyun.com
baseos                                                                                 CentOS Stream 8 - BaseOS
centos-ceph-quincy                                                                     CentOS-8-stream - Ceph Quincy
epel                                                                                   Extra Packages for Enterprise Linux 8 - x86_64
epel-modular                                                                           Extra Packages for Enterprise Linux Modular 8 - x86_64
extras                                                                                 CentOS-8-stream - Extras - mirrors.aliyun.com
extras-common                                                                          CentOS Stream 8 - Extras common packages

4、设置hosts解析

[root@cephnode121 ~]# vi /etc/hosts
#输入
10.0.49.120  cephnode120
10.0.49.121  cephnode121
10.0.49.122  cephnode122

保存退出 :wq

5、设置免密登录

#复制cephnode120节点的秘钥到每个ceph节点
[root@cephnode120 ~]# ssh-keygen
ssh-copy-id root@cephnode120
ssh-copy-id root@cephnode121
ssh-copy-id root@cephnode122
 
##测试每台ceph节点不用密码是否可以登录
[root@cephnode120 ~]# ssh cephnode121
Activate the web console with: systemctl enable --now cockpit.socket

Last login: Sat May 27 15:46:26 2023 from 10.0.49.120
[root@cephnode121 ~]#

cephadm 手动安装系统要求：

Python 3
Systemd
Podman or Docker for running containers
Time synchronization (such as chrony or NTP)
LVM2 for provisioning storage devices

二、安装

1、安装cephadm

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

2、初始化新集群

cephadm bootstrap --mon-ip 10.0.49.120

3、启用 CEPH CLI

cephadm add-repo --release quincy
cephadm install ceph-common

#验证
[root@cephnode120 ~]# ceph -s
  cluster:
    id:     9621bcc6-fc83-11ed-9be2-0050568b3a3f
    health: HEALTH_OK
 
  services:
    mon: 3 daemons, quorum cephnode120,cephnode121,cephnode122 (age 38h)
    mgr: cephnode120.rvmgrv(active, since 39h), standbys: cephnode121.zlzqmb
    mds: 1/1 daemons up, 2 standby
    osd: 3 osds: 3 up (since 24h), 3 in (since 24h)
    rgw: 4 daemons active (2 hosts, 1 zones)
 
  data:
    volumes: 1/1 healthy
    pools:   8 pools, 209 pgs
    objects: 254 objects, 460 KiB
    usage:   627 MiB used, 479 GiB / 480 GiB avail
    pgs:     209 active+clean
 
  io:
    client:   255 B/s rd, 0 op/s rd, 0 op/s wr

4、添加主机

向已初始化的集群添加其他主机

ceph orch host label add cephnode121,cehpnode122 _storage

#验证
[root@cephnode120 ~]# ceph orch host ls
HOST         ADDR         LABELS                 STATUS  
cephnode120  10.0.49.120  _admin                         
cephnode121  10.0.49.121  _storage RadosGateway          
cephnode122  10.0.49.122  _storage RadosGateway          
3 hosts in cluster

此时也可以从面板中看到基本集群已经形成

Centos stream 8 使用 cephadm 安装 Ceph (17.2.6 quincy)集群

三、设置

1、设置osd

查看集群中可用的设备列表

[root@cephnode120 ~]# ceph orch device ls
HOST         PATH      TYPE  DEVICE ID   SIZE  AVAILABLE  REFRESHED  REJECT REASONS                                                 
cephnode120  /dev/sdb  hdd               171G  No         21m ago    Insufficient space (<10 extents) on vgs, LVM detected, locked  
cephnode121  /dev/sdb  hdd               171G  No         21m ago    Insufficient space (<10 extents) on vgs, LVM detected, locked  
cephnode122  /dev/sdb  hdd               171G  No         21m ago    Insufficient space (<10 extents) on vgs, LVM detected, locked

也可以在面板中查看

Centos stream 8 使用 cephadm 安装 Ceph (17.2.6 quincy)集群

将所有可用设备设置为OSD

ceph orch apply osd --all-available-devices

也可以单个添加不同主机中的不同设备

ceph orch daemon add osd cephnode121:/dev/sdc

等待几分钟后，验证

[root@cephnode120 ~]# ceph osd tree
ID  CLASS  WEIGHT   TYPE NAME             STATUS  REWEIGHT  PRI-AFF
-1         0.46857  root default                                   
-7         0.15619      host cephnode120                           
 0    hdd  0.15619          osd.0             up   1.00000  1.00000
-5         0.15619      host cephnode121                           
 1    hdd  0.15619          osd.1             up   1.00000  1.00000
-3         0.15619      host cephnode122                           
 2    hdd  0.15619          osd.2             up   1.00000  1.00000

在面板中查看

Centos stream 8 使用 cephadm 安装 Ceph (17.2.6 quincy)集群

2、设置RGW

ceph orch host label add cephnode121 RadosGateway  
ceph orch host label add cephnode122 RadosGateway
ceph orch apply rgw foo '--placement=label:RadosGateway count-per-host:2' --port=8000

也可以用以下命令不指定主机设置RGW

ceph orch apply rgw foo

等待几分钟后，验证

Centos stream 8 使用 cephadm 安装 Ceph (17.2.6 quincy)集群

3、设置CephFS

[root@cephnode120 ~]# ceph fs volume create cephFS-a --placement="cephnode120,cephnode121,cephnode122"

#验证
[root@cephnode120 ~]# ceph fs volume ls
[
    {
        "name": "cephFS-a"
    }
]