ceph部署手册

CentOS7.2部署Luminous版Ceph-12.2.0

在CentOS7.2上安装部署Luminous版Ceph-12.2.0。由于ceph的Luminous版本默认使用bluestore作为后端存储类型，也新增了mgr功能，所以使用ceph-deploy的1.5.38版本来部署集群、创建MON、OSD、MGR等。

环境

每台主机

• CentOS Linux release 7.2.1511 (Core) Mini版
• 两个100G的磁盘做OSD

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[root@localhost ~]# cat /etc/redhat-release CentOS Linux release 7.2.1511 (Core) [root@localhost ~]# lsblk NAME            MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT sr0              11:0    1 1024M  0 rom xvda            202:0    0   10G  0 disk ├─xvda1         202:1    0  500M  0 part /boot └─xvda2         202:2    0  9.5G  0 part   ├─centos-root 253:0    0  8.5G  0 lvm  /   └─centos-swap 253:1    0    1G  0 lvm  [SWAP] xvdb            202:16   0  100G  0 disk xvdc            202:32   0  100G  0 disk

主机node232作为管理节点，部署ceph-deploy。三台主机配置如下

主机	IP	安装组件
node232	192.168.217.232	ceph-deploy、mon、osd、mgr、ntp
node233	192.168.217.233	mon、osd、ntpdate
node234	192.168.217.234	mon、osd、ntpdate

设置无密登录

Yum源配置

下载阿里云的base源

Wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo

下载阿里云的epel源

wget -O /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-7.repo

修改里面的系统版本为7.3.1611，当前用的CentOS7.2.1511版本的yum源已经清空了

[root@localhost ~]# sed -i '/aliyuncs/d' /etc/yum.repos.d/CentOS-Base.repo

[root@localhost ~]# sed -i '/aliyuncs/d' /etc/yum.repos.d/epel.repo

#[root@localhost ~]# sed -i 's/$releasever/7.3.1611/g' /etc/yum.repos.d/CentOS-Base.repo

[ceph]
name=ceph
baseurl=http://mirrors.163.com/ceph/rpm-luminous/el7/x86_64/gpgcheck=0
[ceph-noarch]
name=cephnoarch
baseurl=http://mirrors.163.com/ceph/rpm-luminous/el7/noarch/
gpgcheck=0

yum makecache

http://download.ceph.com/ ceph官方yum源

安装ceph

下载ceph的相关rpm到本地

1	[root@node232 ~]# yum install --downloadonly --downloaddir=/tmp/ceph ceph

在每台主机上安装ceph

1	[root@node232 ~]# yum localinstall -C -y --disablerepo=* /tmp/ceph/*.rpm

安装成功，查看ceph版本

1 2	[root@node232 ~]# ceph -v ceph version 12.2.0 (32ce2a3ae5239ee33d6150705cdb24d43bab910c) luminous (rc)

部署ceph

在管理节点node232上执行。

安装ceph-deploy

下载ceph-deploy-1.5.38

[root@node232 ~]# yum install --downloadonly --downloaddir=/tmp/ceph-deploy/ ceph-deploy

yum localinstall -C -y --disablerepo=* /tmp/ceph-deploy/*.rpm

安装成功，查看ceph-deploy版本

1 2	[root@node232 ~]# ceph-deploy --version 1.5.38

部署集群

创建部署目录，部署集群

[root@node232 ~]# mkdir ceph-cluster

[root@node232 ~]# cd ceph-cluster

[root@node232 ceph-cluster]# ceph-deploy new node232 node233 node234

加入监控节点

部署mon

1	[root@node232 ceph-cluster]# ceph-deploy mon create-initial

初始化监控节点

执行ceph -s会出错，是由于缺少/etc/ceph/ceph.client.admin.keyring文件

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[root@node232 ceph-cluster]# ceph -s 2017-09-13 12:12:18.772214 7f3d3fc3f700 -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 2017-09-13 12:12:18.772260 7f3d3fc3f700 -1 monclient: ERROR: missing keyring, cannot use cephx for authentication 2017-09-13 12:12:18.772263 7f3d3fc3f700  0 librados: client.admin initialization error (2) No such file or directory [errno 2] error connecting to the cluster

手工复制ceph-cluster目录下ceph.client.admin.keyring文件到/etc/ceph/目录下或者执行 ceph-deploy admin命令自动复制ceph.client.admin.keyring文件

[root@node232 ceph-cluster]# ceph-deploy admin node232 node233 node234

查看集群

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[root@node232 ceph-cluster]# ceph -s   cluster:     id:     988e29ea-8b2c-4fa7-a808-e199f2e6a334     health: HEALTH_OK   services:     mon: 3 daemons, quorum node232,node233,node234     mgr: no daemons active     osd: 0 osds: 0 up, 0 in   data:     pools:   0 pools, 0 pgs     objects: 0 objects, 0 bytes     usage:   0 kB used, 0 kB / 0 kB avail     pgs:

创建osd

1	[root@node232 ceph-cluster]# ceph-deploy --overwrite-conf osd prepare node232:/dev/xvdb node232:/dev/xvdc node233:/dev/xvdb node233:/dev/xvdc node234:/dev/xvdb node234:/dev/xvdc --zap-disk

激活osd

[root@node232 ceph-cluster]# ceph-deploy --overwrite-conf osd activate node232:/dev/xvdb1 node232:/dev/xvdc1 node233:/dev/xvdb1 node233:/dev/xvdc1 node234:/dev/xvdb1 node234:/dev/xvdc1

查看集群

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[root@node232 ceph-cluster]# ceph -s   cluster:     id:     988e29ea-8b2c-4fa7-a808-e199f2e6a334     health: HEALTH_WARN             no active mgr   services:     mon: 3 daemons, quorum node232,node233,node234     mgr: no daemons active     osd: 6 osds: 6 up, 6 in   data:     pools:   0 pools, 0 pgs     objects: 0 objects, 0 bytes     usage:   0 kB used, 0 kB / 0 kB avail     pgs:

配置mgr

在node232上创建名称为foo的mgr服务

1	[root@node232 ceph-cluster]# ceph-deploy mgr create node232:foo

启用dashboard

1	[root@node232 ceph-cluster]# ceph mgr module enable dashboard

通过 http://192.168.217.232:7000 访问dashboard

dashboard的port默认为7000，可以执行ceph config-key set mgr/dashboard/server_port $PORT修改port。
也可以执行ceph config-key set mgr/dashboard/server_addr $IP指定dashboard的访问IP。

Ceph mds部署

ceph-deploy --overwrite-conf mds create node1

ceph-deploy --overwrite-conf mds create node2

ceph-deploy --overwrite-conf mds create node3

ceph osd pool create cephfs_data 128

ceph osd pool create cephfs_metadata 128

ceph fs new cephfs cephfs_metadata cephfs_data

mkdir /mnt/mycephfs  

cat ceph.client.admin.keyring

mount -t ceph node1:6789:/ /mnt/mycephfs -o name=admin,secretfile=/root/admin.secret

ceph osd pool create rbd 8

rbd pool init rbd

rbd create foo --size 4096 -m node1 -k /etc/ceph/ceph.client.admin.keyring

rbd map foo --name client.admin

rbd feature disable foo exclusive-lock, object-map, fast-diff, deep-flatten

rbd map foo --name client.admin

ll -h /dev/rbd0

Ceph对象存储搭建

ceph-deploy install --rgw node1

ceph-deploy rgw create  node1

curl http://node1:7480

systemctl restart ceph-radosgw.service

radosgw-admin user create --uid="rgwuser" --display-name="This is first rgw test user"

yum install python-boto -y

[root@node1 ceph-cluster]# cat s3.py

import boto

import boto.s3.connection

access_key = 'L25H46XKZFY63W7B45VW'

secret_key = 'BKil9AGVU7g0e7wUyfsmyqzqp95IWeliKQHUo41V'

conn = boto.connect_s3(

    aws_access_key_id = access_key,

    aws_secret_access_key = secret_key,

    host = 'node1', port=7480,

    is_secure=False,

    calling_format = boto.s3.connection.OrdinaryCallingFormat(),

)

bucket = conn.create_bucket('my-second-s3-bucket')

for bucket in conn.get_all_buckets():

        print "{name} {created}".format(

                name = bucket.name,

                created = bucket.creation_date,

)

radosgw-admin subuser create --uid=rgwuser --subuser=rgwuser:swift --access=full

yum install python-setuptools -y

easy_install pip

pip install --upgrade setuptools

pip install --upgrade python-swiftclient

swift -A http://node1:7480/auth/1.0 -U rgwuser:swift -K '3beaKGWMQlqo1vuzlK3EwHQ1Ve3qNAwMrLdcrgTA' list