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对象存储扩容

本例在新扩容的每个节点上创建12个 RGW 实例，2个节点共新增24个RGW实例，网关端口分别为100037-10060，网关名称分别为bucket37-bucket60。

扩容机器添加Monitor

如果需要添加Monitor，如图修改ceph1的“/etc/ceph/ceph.conf”，在“mon_initial_members”和“mon_host”中添加ceph4和ceph5的IP地址。

  1. 编辑ceph.conf。
    1
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    cd
/etc/ceph/
vim ceph.conf
    1. 将“mon_initial_members=ceph1,ceph2,ceph3”修改为“mon_initial_members=ceph1,ceph2,ceph3,ceph4,ceph5”。
    2. 将“mon_host=192.168.3.156,192.168.3.157,192.168.3.158”修改为“mon_host=192.168.3.156,192.168.3.157,192.168.3.158,192.168.3.197,192.168.3.198”。

  2. 将ceph.conf从ceph1节点推送至各个节点。
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    ceph-deploy --overwrite-conf admin ceph1 ceph2 ceph3 ceph4 ceph5
  3. 在ceph1创建monitor。
    1
    		 
    ceph-deploy mon create ceph4 ceph5
  4. 查看mon状态。
    1
    		 
    ceph mon stat

    若“mon stat”中出现扩容机器的信息，说明扩容进来的服务器创建Monitor成功。

（可选）删除Monitor

删除monitor对集群影响较大，一般需要提前规划好，如不需要，可以不用删除。

以删除Monitor ceph2和ceph3为例，需修改ceph1的“/etc/ceph/ceph.conf”文件中的ceph2和ceph3的信息，并将ceph.conf推送至各节点。

  1. 编辑ceph.conf。
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    cd
/etc/ceph/
vim ceph.conf

    将“mon_initial_members=ceph1,ceph2,ceph3,ceph4,ceph5”修改为“mon_initial_members=ceph1,ceph4,ceph5”。

    将“mon_host=192.168.3.156,192.168.3.157,192.168.3.158,192.168.3.197,192.168.3.198”修改为“mon_host=192.168.3.156,192.168.3.197,192.168.3.198”。

  2. 将ceph.conf从ceph1节点推送至各个节点。
    1
    		 
    ceph-deploy --overwrite-conf admin ceph1 ceph2 ceph3 ceph4 ceph5
  3. 删除monitor ceph2和ceph3。
    1
    		 
    ceph-deploy mon destroy ceph2 ceph3

准备ceph.conf文件

  1. 在ceph.conf文件中添加rgw实例的端口配置，在ceph1上编辑ceph.conf。
    1
    		 
    vim /etc/ceph/ceph.conf

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    [global]
fsid = 4f238985-ad0a-4fc3-944b-da59ea3e65d7
mon_initial_members = ceph1, ceph2, ceph3,ceph4,ceph5
mon_host = 192.168.3.156,192.168.3.157,192.168.3.158，192.168.3.197 ，192.168.3.198
auth_cluster_required = cephx
auth_service_required = cephx
auth_client_required = cephx
public_network = 192.168.3.0/24
cluster_network = 192.168.3.0/24

[mon]
mon_allow_pool_delete = true

[client.rgw.bucket1]
rgw_frontends = civetweb port=10001
log file = /var/log/ceph/client.rgw.bucket1.log
[client.rgw.bucket2]
rgw_frontends = civetweb port=10002
log file = /var/log/ceph/client.rgw.bucket2.log
[client.rgw.bucket3]
rgw_frontends = civetweb port=10003
log file = /var/log/ceph/client.rgw.bucket3.log
[client.rgw.bucket4]
rgw_frontends = civetweb port=10004
log file = /var/log/ceph/client.rgw.bucket4.log
[client.rgw.bucket5]
rgw_frontends = civetweb port=10005
log file = /var/log/ceph/client.rgw.bucket5.log
[client.rgw.bucket6]
rgw_frontends = civetweb port=10006
log file = /var/log/ceph/client.rgw.bucket6.log
[client.rgw.bucket7]
rgw_frontends = civetweb port=10007
log file = /var/log/ceph/client.rgw.bucket7.log
[client.rgw.bucket8]
rgw_frontends = civetweb port=10008
log file = /var/log/ceph/client.rgw.bucket8.log
[client.rgw.bucket9]
rgw_frontends = civetweb port=10009
log file = /var/log/ceph/client.rgw.bucket9.log
[client.rgw.bucket10]
rgw_frontends = civetweb port=10010
log file = /var/log/ceph/client.rgw.bucket10.log
[client.rgw.bucket11]
rgw_frontends = civetweb port=10011
log file = /var/log/ceph/client.rgw.bucket11.log
[client.rgw.bucket12]
rgw_frontends = civetweb port=10012
log file = /var/log/ceph/client.rgw.bucket12.log
[client.rgw.bucket13]
rgw_frontends = civetweb port=10013
log file = /var/log/ceph/client.rgw.bucket13.log
[client.rgw.bucket14]
rgw_frontends = civetweb port=10014
log file = /var/log/ceph/client.rgw.bucket14.log
[client.rgw.bucket15]
rgw_frontends = civetweb port=10015
log file = /var/log/ceph/client.rgw.bucket15.log
[client.rgw.bucket16]
rgw_frontends = civetweb port=10016
log file = /var/log/ceph/client.rgw.bucket16.log
[client.rgw.bucket17]
rgw_frontends = civetweb port=10017
log file = /var/log/ceph/client.rgw.bucket17.log
[client.rgw.bucket18]
rgw_frontends = civetweb port=10018
log file = /var/log/ceph/client.rgw.bucket18.log
[client.rgw.bucket19]
rgw_frontends = civetweb port=10019
log file = /var/log/ceph/client.rgw.bucket19.log
[client.rgw.bucket20]
rgw_frontends = civetweb port=10020
log file = /var/log/ceph/client.rgw.bucket20.log
[client.rgw.bucket21]
rgw_frontends = civetweb port=10021
log file = /var/log/ceph/client.rgw.bucket21.log
[client.rgw.bucket22]
rgw_frontends = civetweb port=10022
log file = /var/log/ceph/client.rgw.bucket22.log
[client.rgw.bucket23]
rgw_frontends = civetweb port=10023
log file = /var/log/ceph/client.rgw.bucket23.log
[client.rgw.bucket24]
rgw_frontends = civetweb port=10024
log file = /var/log/ceph/client.rgw.bucket24.log
[client.rgw.bucket25]
rgw_frontends = civetweb port=10025
log file = /var/log/ceph/client.rgw.bucket25.log
[client.rgw.bucket26]
rgw_frontends = civetweb port=10026
log file = /var/log/ceph/client.rgw.bucket26.log
[client.rgw.bucket27]
rgw_frontends = civetweb port=10027
log file = /var/log/ceph/client.rgw.bucket27.log
[client.rgw.bucket28]
rgw_frontends = civetweb port=10028
log file = /var/log/ceph/client.rgw.bucket28.log
[client.rgw.bucket29]
rgw_frontends = civetweb port=10029
log file = /var/log/ceph/client.rgw.bucket29.log
[client.rgw.bucket30]
rgw_frontends = civetweb port=10030
log file = /var/log/ceph/client.rgw.bucket30.log
[client.rgw.bucket31]
rgw_frontends = civetweb port=10031
log file = /var/log/ceph/client.rgw.bucket31.log
[client.rgw.bucket32]
rgw_frontends = civetweb port=10032
log file = /var/log/ceph/client.rgw.bucket32.log
[client.rgw.bucket33]
rgw_frontends = civetweb port=10033
log file = /var/log/ceph/client.rgw.bucket33.log
[client.rgw.bucket34]
rgw_frontends = civetweb port=10034
log file = /var/log/ceph/client.rgw.bucket34.log
[client.rgw.bucket35]
rgw_frontends = civetweb port=10035
log file = /var/log/ceph/client.rgw.bucket35.log
[client.rgw.bucket36]
rgw_frontends = civetweb port=10036
log file = /var/log/ceph/client.rgw.bucket36.log
[client.rgw.bucket37]
rgw_frontends = civetweb port=10037
log file = /var/log/ceph/client.rgw.bucket37.log
[client.rgw.bucket38]
rgw_frontends = civetweb port=10038
log file = /var/log/ceph/client.rgw.bucket38.log
[client.rgw.bucket39]
rgw_frontends = civetweb port=10039
log file = /var/log/ceph/client.rgw.bucket39.log
[client.rgw.bucket41]
rgw_frontends = civetweb port=10041
log file = /var/log/ceph/client.rgw.bucket41.log
[client.rgw.bucket42]
rgw_frontends = civetweb port=10042
log file = /var/log/ceph/client.rgw.bucket42.log
[client.rgw.bucket43]
rgw_frontends = civetweb port=10043
log file = /var/log/ceph/client.rgw.bucket43.log
[client.rgw.bucket44]
rgw_frontends = civetweb port=10044
log file = /var/log/ceph/client.rgw.bucket44.log
[client.rgw.bucket45]
rgw_frontends = civetweb port=10045
log file = /var/log/ceph/client.rgw.bucket45.log
[client.rgw.bucket46]
rgw_frontends = civetweb port=10046
log file = /var/log/ceph/client.rgw.bucket46.log
[client.rgw.bucket47]
rgw_frontends = civetweb port=10047
log file = /var/log/ceph/client.rgw.bucket47.log
[client.rgw.bucket48]
rgw_frontends = civetweb port=10048
log file = /var/log/ceph/client.rgw.bucket48.log
[client.rgw.bucket49]
rgw_frontends = civetweb port=10049
log file = /var/log/ceph/client.rgw.bucket49.log
[client.rgw.bucket50]
rgw_frontends = civetweb port=10050
log file = /var/log/ceph/client.rgw.bucket50.log
[client.rgw.bucket51]
rgw_frontends = civetweb port=10051
log file = /var/log/ceph/client.rgw.bucket51.log
[client.rgw.bucket52]
rgw_frontends = civetweb port=10052
log file = /var/log/ceph/client.rgw.bucket52.log
[client.rgw.bucket53]
rgw_frontends = civetweb port=10053
log file = /var/log/ceph/client.rgw.bucket53.log
[client.rgw.bucket54]
rgw_frontends = civetweb port=10054
log file = /var/log/ceph/client.rgw.bucket54.log
[client.rgw.bucket55]
rgw_frontends = civetweb port=10055
log file = /var/log/ceph/client.rgw.bucket55.log
[client.rgw.bucket56]
rgw_frontends = civetweb port=10056
log file = /var/log/ceph/client.rgw.bucket56.log
[client.rgw.bucket57]
rgw_frontends = civetweb port=10057
log file = /var/log/ceph/client.rgw.bucket57.log
[client.rgw.bucket58]
rgw_frontends = civetweb port=10058
log file = /var/log/ceph/client.rgw.bucket58.log
[client.rgw.bucket59]
rgw_frontends = civetweb port=10059
log file = /var/log/ceph/client.rgw.bucket59.log
[client.rgw.bucket60]
rgw_frontends = civetweb port=10060
log file = /var/log/ceph/client.rgw.bucket60.log
  2. 在所有集群节点上同步配置文件，在ceph1上执行：
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    ceph-deploy --overwrite-conf admin ceph1 ceph2 ceph3 ceph4 ceph5

新增RGW实例

  1. 创建RGW实例，在主节点ceph1上执行以下命令：
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    for i in {37..48};do ceph-deploy rgw create ceph4:bucket$i;done
for i in {49..60};do ceph-deploy rgw create ceph5:bucket$i;done
  2. 查看60个RGW进程是否在线。
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    ceph -s
  3. 使用curl或者web节点登录验证，如下图所示。

    至此网关服务创建成功。

部署MGR

为扩容的节点ceph4和ceph5创建MGR。

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ceph-deploy mgr create ceph4 ceph5

部署OSD

给扩容进来的服务器创建OSD，由于每台服务器有12块硬盘，执行如下命令：

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for i in {a..l}
do
ceph-deploy osd create ceph4 --data /dev/sd${i}
done
for i in {a..l}
do
ceph-deploy osd create ceph5 --data /dev/sd${i}
done

配置存储池

  1. 查看存储池信息。
    1
    		 
    ceph osd lspools

  2. 修改相应的“pg pgpnum”和“pgnum”.

    pg的计算规则如下：

    Total PGs = ((Total_number_of_OSD * 100) / max_replication_count) / pool_count

    因此按照该环境修改“pgnum”和“pgpnum”如下： 
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    ceph osd pool set default.rgw.buckets.data pg_num 2048
ceph osd pool set default.rgw.buckets.data pgp_num 2048
ceph osd pool set default.rgw.buckets.index pg_num 256
ceph osd pool set default.rgw.buckets.index pgp_num 256

验证扩容

扩容后，Ceph会通过迁移来自其他OSD的一些pg到新添进的OSD，再次平衡数据。

  1. 确认数据迁移结束后集群是否恢复健康。
    1
    		 
    ceph -s

  2. 确定集群的存储容量是否增加。
    1
    		 
    ceph osd df

父主题： Ceph扩容