主机名 | 主机IP | 磁盘配比 | 角色 |
---|---|---|---|
node1 | public-ip:10.0.0.130cluster-ip:192.168.2.130 | sda,sdb,sdcsda是系统盘,另外两块数据盘 | ceph-deploy,monitor,mgr,osd |
node2 | public-ip:10.0.0.131cluster-ip:192.168.2.131 | sda,sdb,sdcsda是系统盘,另外两块数据盘 | monitor,mgr,osd |
node3 | public-ip:10.0.0.132cluster-ip:192.168.2.132 | sda,sdb,sdcsda是系统盘,另外两块数据盘 | monitor,mgr,osd |
主机名设置,三台主机分别执行属于自己的命令
node1
[root@localhost ~]# hostnamectl set-hostname node1
[root@localhost ~]# hostname node1
node2
[root@localhost ~]# hostnamectl set-hostname node2
[root@localhost ~]# hostname node2
node3
[root@localhost ~]# hostnamectl set-hostname node3
[root@localhost ~]# hostname node3
执行完毕后要想看到效果,需要关闭当前命令行窗口,重新打开即可看到设置效果
在3台机器上都执行下面命令,添加映射
echo "10.0.0.130 node1 " >> /etc/hosts
echo "10.0.0.131 node2 " >> /etc/hosts
echo "10.0.0.132 node3 " >> /etc/hosts
创建用户(三台机器上都运行)
useradd -d /home/admin -m admin
echo "123456" | passwd admin --stdin
#sudo权限
echo "admin ALL = (root) NOPASSWD:ALL" | sudo tee /etc/sudoers.d/admin
sudo chmod 0440 /etc/sudoers.d/admin
设置免密登录 (只在node1上执行)
[root@node1 ~]# su - admin
[admin@node1 ~]$ ssh-keygen
Generating public/private rsa key pair.
Enter file in which to save the key (/home/admin/.ssh/id_rsa):
Created directory '/home/admin/.ssh'.
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in /home/admin/.ssh/id_rsa.
Your public key has been saved in /home/admin/.ssh/id_rsa.pub.
The key fingerprint is:
SHA256:qfWhuboKeoHQOOMLOIB5tjK1RPjgw/Csl4r6A1FiJYA admin@admin.ops5.bbdops.com
The key's randomart image is:
+---[RSA 2048]----+
|+o.. |
|E.+ |
|*% |
|X+X . |
|=@.+ S . |
|X.* o + . |
|oBo. . o . |
|ooo. . |
|+o....oo. |
+----[SHA256]-----+
[admin@node1 ~]$ ssh-copy-id admin@node1
[admin@node1 ~]$ ssh-copy-id admin@node2
[admin@node1 ~]$ ssh-copy-id admin@node3
三台都执行
yum -y install ntpdate
ntpdate -u cn.ntp.org.cn
crontab -e
*/20 * * * * ntpdate -u cn.ntp.org.cn > /dev/null 2>&1
systemctl reload crond.service
cat > /etc/yum.repos.d/ceph.repo<<'EOF'
[Ceph]
name=Ceph packages for $basearch
baseurl=https://mirror.tuna.tsinghua.edu.cn/ceph/rpm-mimic/el7/$basearch
enabled=1
gpgcheck=1
type=rpm-md
gpgkey=https://mirror.tuna.tsinghua.edu.cn/ceph/keys/release.asc
priority=1
[Ceph-noarch]
name=Ceph noarch packages
baseurl=https://mirror.tuna.tsinghua.edu.cn/ceph/rpm-mimic/el7/noarch
enabled=1
gpgcheck=1
type=rpm-md
gpgkey=https://mirror.tuna.tsinghua.edu.cn/ceph/keys/release.asc
priority=1
[ceph-source]
name=Ceph source packages
baseurl=https://mirror.tuna.tsinghua.edu.cn/ceph/rpm-mimic/el7/SRPMS
enabled=1
gpgcheck=1
type=rpm-md
gpgkey=https://mirror.tuna.tsinghua.edu.cn/ceph/keys/release.asc
priority=1
EOF
[root@node1 ~]# sudo yum install ceph-deploy
ceph需要epel源的包,所以安装的节点都需要yum install epel-release
[admin@node1 ~]$ mkdir my-cluster
[admin@node1 ~]$ cd my-cluster
# new
[admin@node1 my-cluster]$ ceph-deploy new node1 node2 node3
Traceback (most recent call last):
File "/bin/ceph-deploy", line 18, in <module>
from ceph_deploy.cli import main
File "/usr/lib/python2.7/site-packages/ceph_deploy/cli.py", line 1, in <module>
import pkg_resources
ImportError: No module named pkg_resources
#以上出现报错,是因为没有pip,安装pip
[admin@node1 my-cluster]$ sudo yum install epel-release
[admin@node1 my-cluster]$ sudo yum install python-pip
#重新初始化
[admin@node1 my-cluster]$ ceph-deploy new node1 node2 node3
[admin@node1 my-cluster]$ ls
ceph.conf ceph-deploy-ceph.log ceph.mon.keyring
[admin@node1 my-cluster]$ cat ceph.conf
[global]
fsid = a1132f78-cdc5-43d0-9ead-5b590c60c53d
mon_initial_members = node1, node2, node3
mon_host = 10.28.103.211,10.28.103.212,10.28.103.213
auth_cluster_required = cephx
auth_service_required = cephx
auth_client_required = cephx
修改ceph.conf,添加如下配置
public network = 10.28.103.0/24
cluster network = 172.30.103.0/24
osd pool default size = 3
osd pool default min size = 2
osd pool default pg num = 128
osd pool default pgp num = 128
osd pool default crush rule = 0
osd crush chooseleaf type = 1
max open files = 131072
ms bind ipv6 = false
[mon]
mon clock drift allowed = 10
mon clock drift warn backoff = 30
mon osd full ratio = .95
mon osd nearfull ratio = .85
mon osd down out interval = 600
mon osd report timeout = 300
mon allow pool delete = true
[osd]
osd recovery max active = 3
osd max backfills = 5
osd max scrubs = 2
osd mkfs type = xfs
osd mkfs options xfs = -f -i size=1024
osd mount options xfs = rw,noatime,inode64,logbsize=256k,delaylog
filestore max sync interval = 5
osd op threads = 2
[admin@node1 my-cluster]$ ceph-deploy install --no-adjust-repos node1 node2 node3
--no-adjust-repos是直接使用本地源,不生成官方源。
部署初始的monitors,并获得keys
[admin@node1 my-cluster]$ ceph-deploy mon create-initial
做完这一步,在当前目录下就会看到有如下的keyrings:
[admin@node1 my-cluster]$ ls
ceph.bootstrap-mds.keyring ceph.bootstrap-osd.keyring ceph.client.admin.keyring ceph-deploy-ceph.log
ceph.bootstrap-mgr.keyring ceph.bootstrap-rgw.keyring ceph.conf ceph.mon.keyring
将配置文件和密钥复制到集群各节点
配置文件就是生成的ceph.conf,而密钥是ceph.client.admin.keyring,当使用ceph客户端连接至ceph集群时需要使用的密默认密钥,这里我们所有节点都要复制,命令如下。
[admin@node1 my-cluster]$ ceph-deploy admin node1 node2 node3
#在L版本的`Ceph`中新增了`manager daemon`,如下命令部署一个`Manager`守护进程
[admin@node1 my-cluster]$ ceph-deploy mgr create node1
在node1上执行以下命令
#用法:ceph-deploy osd create –data {device} {ceph-node}
ceph-deploy osd create --data /dev/sdb node1
ceph-deploy osd create --data /dev/sdb node2
ceph-deploy osd create --data /dev/sdb node3
ceph-deploy osd create --data /dev/sdc node1
ceph-deploy osd create --data /dev/sdc node2
ceph-deploy osd create --data /dev/sdc node3
如果报错,记得用root执行
[admin@node1 ~]$ sudo ceph health
HEALTH_OK
[admin@node1 ~]$ sudo ceph -s
cluster:
id: af6bf549-45be-419c-92a4-8797c9a36ee8
health: HEALTH_OK
services:
mon: 3 daemons, quorum node1,node2,node3
mgr: node1(active)
osd: 6 osds: 6 up, 6 in
data:
pools: 0 pools, 0 pgs
objects: 0 objects, 0 B
usage: 6.0 GiB used, 108 GiB / 114 GiB avail
pgs:
默认情况下ceph.client.admin.keyring文件的权限为600,属主和属组为root,如果在集群内节点使用cephadmin用户直接直接ceph命令,将会提示无法找到/etc/ceph/ceph.client.admin.keyring文件,因为权限不足。
如果使用sudo ceph不存在此问题,为方便直接使用ceph命令,可将权限设置为644。在集群节点上面node1 admin用户下执行下面命令。
[admin@node1 my-cluster]$ ceph -s
2020-03-08 07:59:36.062 7f52d08e0700 -1 auth: unable to find a keyring on /etc/ceph/ceph.client.admin.keyring,/etc/ceph/ceph.keyring,/etc/ceph/keyring,/etc/ceph/keyring.bin,: (2) No such file or directory
2020-03-08 07:59:36.062 7f52d08e0700 -1 monclient: ERROR: missing keyring, cannot use cephx for authentication
[errno 2] error connecting to the cluster
[admin@node1 my-cluster]$ sudo chmod 644 /etc/ceph/ceph.client.admin.keyring
[admin@node1 my-cluster]$ ceph -s
cluster:
id: af6bf549-45be-419c-92a4-8797c9a36ee8
health: HEALTH_OK
services:
mon: 3 daemons, quorum node1,node2,node3
mgr: node1(active)
osd: 6 osds: 6 up, 6 in
data:
pools: 0 pools, 0 pgs
objects: 0 objects, 0 B
usage: 6.1 GiB used, 108 GiB / 114 GiB avail
pgs:
[admin@node1 my-cluster]$
[admin@node1 ~]$ sudo ceph osd tree
ID CLASS WEIGHT TYPE NAME STATUS REWEIGHT PRI-AFF
-1 0.11151 root default
-3 0.03717 host node1
0 hdd 0.01859 osd.0 up 1.00000 1.00000
3 hdd 0.01859 osd.3 up 1.00000 1.00000
-5 0.03717 host node2
1 hdd 0.01859 osd.1 up 1.00000 1.00000
4 hdd 0.01859 osd.4 up 1.00000 1.00000
-7 0.03717 host node3
2 hdd 0.01859 osd.2 up 1.00000 1.00000
5 hdd 0.01859 osd.5 up 1.00000 1.00000
ceph mgr module enable dashboard
如果以上操作报错如下:
Error ENOENT: all mgr daemons do not support module 'dashboard', pass --force to force enablement
则因为没有安装ceph-mgr-dashboard
,在mgr的节点上安装。
yum install ceph-mgr-dashboard
# 编辑ceph.conf文件
vi ceph.conf
[mon]
mgr initial modules = dashboard
#推送配置
[admin@admin my-cluster]$ ceph-deploy --overwrite-conf config push node1 node2 node3
#重启mgr
sudo systemctl restart ceph-mgr@node1
默认情况下,仪表板的所有HTTP连接均使用SSL/TLS进行保护。
#要快速启动并运行仪表板,可以使用以下内置命令生成并安装自签名证书:
[root@node1 my-cluster]# ceph dashboard create-self-signed-cert
Self-signed certificate created
#创建具有管理员角色的用户:
[root@node1 my-cluster]# ceph dashboard set-login-credentials admin admin
Username and password updated
#查看ceph-mgr服务:
[root@node1 my-cluster]# ceph mgr services
{
"dashboard": "https://node1:8443/"
}
以上配置完成后,浏览器输入https://node1:8443
输入用户名admin
,密码admin
登录即可查看
参考链接:
https://www.sysit.cn/blog/post/sysit/Ceph%E5%AE%89%E8%A3%85%E9%85%8D%E7%BD%AE%E6%89%8B%E5%86%8C