Ceph 对象存储

新建云主机作为网关节点，配置cephd用户，配置免密码登录，配置admin-deploy节点/etc/hosts，配置网关节点/etc/hosts，配置cephd账户免ssh登录；

网关节点主机名cephgw

在admin-deploy节点执行

$ceph-deploy install --rgw cephgw

报错：

[cephgw][ERROR] Traceback (most recent call last):
[cephgw][ERROR]  File "/usr/lib/python2.7/site-packages/ceph_deploy/lib/vendor/remoto/process.py",line 119, in run
[cephgw][ERROR]    reporting(conn, result, timeout)
[cephgw][ERROR]  File"/usr/lib/python2.7/site-packages/ceph_deploy/lib/vendor/remoto/log.py",line 13, in reporting
[cephgw][ERROR]    received = result.receive(timeout)
[cephgw][ERROR]  File"/usr/lib/python2.7/site-packages/ceph_deploy/lib/vendor/remoto/lib/vendor/execnet/gateway_base.py",line 704, in receive
[cephgw][ERROR]    raise self._getremoteerror() orEOFError()
[cephgw][ERROR] RemoteError: Traceback (most recent call last):
[cephgw][ERROR]  File "", line1036, in executetask
[cephgw][ERROR]  File "",line 12, in _remote_run
[cephgw][ERROR]  File"/usr/lib64/python2.7/subprocess.py", line 711, in __init__
[cephgw][ERROR]    errread, errwrite)
[cephgw][ERROR]  File"/usr/lib64/python2.7/subprocess.py", line 1327, in _execute_child
[cephgw][ERROR]    raise child_exception
[cephgw][ERROR] OSError: [Errno 2] No such file or directory
[cephgw][ERROR]
[cephgw][ERROR]
[ceph_deploy][ERROR] RuntimeError: Failed to execute command: ceph --version

估计网速不好，重新安装一遍成功了

执行

$ceph-deploy admin cephgw
$ceph-deploy rgw create cephgw

执行成功后，cephgw节点上通过7480端口访问网关了

修改端口：
在admin-deploy节点执行
修改/home/cephd/cluster-ceph目录下的ceph.conf文件
添加：

[client.rgw.cephgw]
rgw_frontends = “civetweb port=8099”

推送给配置文件到网关节点：

$ceph-deploy –overwrite-conf config push cephgw

推动后，在cephgw节点重启网关服务：

$sudo systemctl restartceph-radosgw.target

注意，这里红字内容和官网文档不一样，官网文档写的是ceph-radosgw.service，根本找不到服务
此时访问http://cephgwIp:8099，可以看到网关页面返回信息

创建s3网关用户

[root@admin-deploy ceph]# radosgw-admin user create --uid="zhangyan777"--display-name="zhangyan"
{
    "user_id":"zhangyan777",
    "display_name":"zhangyan",
    "email": "",
    "suspended": 0,
    "max_buckets": 1000,
    "auid": 0,
    "subusers": [],
    "keys": [
        {
            "user":"zhangyan777",
            "access_key":"R5WN26V2RBIA23U39XDQ",
            "secret_key": "[Gh8KJCR2xsUownPv7FfvY5E9AEW2r9fE97Fznrmk](https://www.jianshu.com/writer)"
        }
    ],
    "swift_keys": [],
    "caps": [],
    "op_mask": "read, write,delete",
    "default_placement":"",
    "placement_tags": [],
    "bucket_quota": {
        "enabled": false,
        "check_on_raw": false,
        "max_size": -1,
        "max_size_kb": 0,
        "max_objects": -1
    },
    "user_quota": {
        "enabled": false,
        "check_on_raw": false,
        "max_size": -1,
        "max_size_kb": 0,
        "max_objects": -1
    },
    "temp_url_keys": [],
    "type": "rgw",
    "mfa_ids": []
}

注意，生成的ak、sk要保存好，访问对象存储功能时需要使用
可以通过s3客户端来测试ceph对象存储

#yum install –y s3cmd

配置s3cmd
s3cmd –configure
主要配置ak，sk，endpoint指向ceph对象网关ip地址和端口
测试

$s3cmd mb s3://first-bucket