然后利用bucket localtion实现rgw集群扩容

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扩容思路：ceph集群容量不足的时候，新加的OSD组成新的pool，制定新的rule规则，新建的bucket都存放在这些新加入的pool里面，注意扩容仅限于新加的bucket，已有的bucket扩容不适用。

###1.新建pool

ceph osd pool create .rgw.buckets.custom 4096 4096ceph osd pool create .rgw.buckets.custom.index 512 512ceph osd pool create .rgw.buckets.custom.extra 64 64

###2.调整region和zone配置 导出region配置

radosgw-admin region get --name client.radosgw.us-zone1  > region.conf.json

编辑region.conf.json,修改placement_targets部分

  #修改前    "placement_targets": [        {            "name": "default-placement",            "tags": []        }    ],    "default_placement": "default-placement"

    #修改后    "placement_targets": [        {            "name": "default-placement",            "tags": []        },        {            "name": "new",            "tags": []        }    ],    "default_placement": "default-placement"

导出zone配置

radosgw-admin zone get --name client.radosgw.us-zone1 > zone.conf.json

编辑zone.conf.json,修改placement_targets部分

      #修改前"placement_pools": [        {            "key": "default-placement",            "val": {                "index_pool": ".us-zone1.rgw.buckets.index",                "data_pool": ".us-zone1.rgw.buckets",                "data_extra_pool": ".us-zone1.rgw.buckets.extra"            }        }   ]

  #修改后"placement_pools": [        {            "key": "default-placement",            "val": {                "index_pool": ".us-zone1.rgw.buckets.index",                "data_pool": ".us-zone1.rgw.buckets",                "data_extra_pool": ".us-zone1.rgw.buckets.extra"            }        },        {            "key": "new",            "val": {                "index_pool": ".rgw.buckets.custom.index",                "data_pool": ".rgw.buckets.custom",                "data_extra_pool": ".rgw.buckets.custom.extra"            }        }

导入配置

radosgw-admin region set --name client.radosgw.us-zone1 < region.conf.jsonradosgw-admin zone set --name client.radosgw.us-zone1 < zone.conf.json

刷新配置信息

radosgw-admin regionmap update --name client.radosgw.us-zone1

3.重启服务

注意：所有radosgw服务节点都要进行这一步

/etc/init.d/radosgw restart

###4. 验证测试

测试方法1： 新建bucket需要指定localtion，boto代码如下

from boto.s3.connection import S3Connectionimport botoaccess_key = 'xxx'secret_key = 'xxxx'host = 's3.ceph.work'bucket = 'localtest2'conn = S3Connection(access_key, secret_key, host=host, is_secure=False)conn = boto.connect_s3(        aws_access_key_id = access_key,        aws_secret_access_key = secret_key,        host = host,        is_secure=False,        calling_format = boto.s3.connection.SubdomainCallingFormat(),        validate_certs = True,        )bucket = conn.create_bucket(bucket,location=':new')bucket = conn.get_bucket(bucket)print bucket

测试方法2：

s3cmd mb s3://localtest2 --bucket-location=:new

验证

root@ceph.work/# radosgw-admin bucket stats --bucket=localtest2 --name client.radosgw.us-zone1{    "bucket": "localtest2",    "pool": ".rgw.buckets.custom",    "index_pool": ".rgw.buckets.custom.index",    "id": "us-zone1.477528.2",    "marker": "us-zone1.477528.2",    "owner": "gf",    "ver": "0#1,1#1,2#1,3#1,4#1,5#1,6#1,7#1",    "master_ver": "0#0,1#0,2#0,3#0,4#0,5#0,6#0,7#0",    "mtime": "2016-07-07 15:50:53.000000",    "max_marker": "0#,1#,2#,3#,4#,5#,6#,7#",    "usage": {},    "bucket_quota": {        "enabled": false,        "max_size_kb": -1,        "max_objects": -1    }}

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