Ceph对象存储网关安装配置

时间 2019-11-24

标签 ceph 对象存储网关安装配置繁體版

原文原文链接

引言

基于已部署好的Ceph集群，部署一个网关服务器，进行对象存储服务。操做系统CentOS6.5 CEPH0.94.3其实基于librados能够直接进行访问，可是我看了百度，UCLOUD的对象存储，用户在网页上进行文件的上传、下载时，都经过web服务器间接和存储集群打交道，进行了一层隔离，而不是直接和集群进行通讯操做。我得理解是便于访问控制以及隔离。html

1.依赖包安装

Ceph rados-gateway依赖Apache和FastCGI, 用户的请求先到web服务器，再走rados-gateway进入集群之中。python

1.1 安装Apache服务

sudo yum install httpd
Package httpd-2.2.15-47.el6.centos.x86_64 already installed and latest version

1.2 配置http服务器

sudo vim /etc/httpd/conf/httpd.conf

将ServerName的注释号去掉，添加上本身网关服务器的IP地址web

272 # If your host doesn't have a registered DNS name, enter its IP address here.
273 # You will have to access it by its address anyway, and this will make 
274 # redirections work in a sensible way.
275 #
276 ServerName 101.67.163.34:80

在配置中增长以下信息，加载mod_proxy_fcgiapache

<IfModule !proxy_fcgi_module>
LoadModule proxy_fcgi_module modules/mod_proxy_fcgi.so
</IfModule>

此处需注意，须要将该段内容加载LoadModule系列的后面，不然会报以下错误：swift

sudo service httpd start
Starting httpd: httpd: Syntax error on line 129 of /etc/httpd/conf/httpd.conf: Cannot load /etc/httpd/modules/mod_proxy_fcgi.so into server: /etc/httpd/modules/mod_proxy_fcgi.so: undefined symbol: ap_proxy_release_connection

修改配置中的LISTEN字段，将网关所在主机的IP地址添加进去vim

# Listen: Allows you to bind Apache to specific IP addresses and/or
# ports, in addition to the default. See also the <VirtualHost>
# directive.
#
# Change this to Listen on specific IP addresses as shown below to 
# prevent Apache from glomming onto all bound IP addresses (0.0.0.0)
#
Listen 101.67.163.34:80
#Listen 80

1.3 SSL支持（此处是否必须不是很清楚，只是按照官方文档走）

秘钥文件生成centos

sudo yum install mod_ssl openssl
openssl genrsa -out ca.key 2048
openssl req -new -key ca.key -out ca.csr
openssl x509 -req -days 365 -in ca.csr -signkey ca.key -out ca.crt

文件目录放置sudo cp ca.crt /etc/pki/tls/certs服务器

sudo cp ca.key /etc/pki/tls/private/ca.key
sudo cp ca.csr /etc/pki/tls/private/ca.csr

配置文件修改/etc/httpd/conf.d/ssl.conf.frontend

SSLCertificateFile  /etc/pki/tls/certs/ca.crt
SSLCertificateKeyFile /etc/pki/tls/private/ca.key

重启httpd服务sudo service httpd restartsocket

1.4 网关服务安装

sudo yum install ceph-radosgw

至此，相关依赖包安装完毕

2. CEPH网关服务配置

ceph网关实际上是ceph集群的一个客户端，用户经过这个网关间接访问ceph集群，做为客户端，它须要准备以下内容：
网关名称，此处用gateway称呼
一个能够访问存储集群的用户以及对应的KEYRING
数据资源池，这个由ceph集群提供
为网关服务示例准备一个数据存放空间
在ceph.conf配置文件中设置gateway信息

2.1 建立访问用户及权限设置

建立gateway keyring，一开始该文件为空

sudo ceph-authtool --create-keyring /etc/ceph/ceph.client.radosgw.keyring
sudo chmod +r /etc/ceph/ceph.client.radosgw.keyring

建立网关用户名以及key 此处名字为 client.radosgw.gateway

sudo ceph-authtool /etc/ceph/ceph.client.radosgw.keyring -n client.radosgw.gateway --gen-key

为KEYRING添加权限

sudo ceph-authtool -n client.radosgw.gateway --cap osd 'allow rwx' --cap mon 'allow rwx' /etc/ceph/ceph.client.radosgw.keyring

将key添加到集群中

sudo ceph -k /etc/ceph/ceph.client.admin.keyring auth add client.radosgw.gateway -i /etc/ceph/ceph.client.radosgw.keyring

将相关的KEYRING文件拷贝到rados-gateway所在的主机 /etc/ceph/目录下

2.2 数据资源池建立

.rgw.root
.rgw.control
.rgw.gc
.rgw.buckets
.rgw.buckets.index
.rgw.buckets.extra
.log
.intent-log
.usage
.users
.users.email
.users.swift
.users.uid

[root@gnop029-ct-zhejiang_wenzhou-16-34 conf]# ceph osd lspools
4 rbd,6 pool-1,7 pool-2,8 .rgw,9 .rgw.root,10 .rgw.control,11 .rgw.gc,12 .rgw.buckets,13 .rgw.buckets.index,14 .log,15 .intent-log,16 .usage,17 .users,18 .users.email,19 .users.swift,20 .users.uid

2.3 将网关配置信息添加到集群配置中

[client.radosgw.gateway]
host=ceph-24
keyring=/etc/ceph/ceph.client.radosgw.keyring
rgw socket path=/var/run/ceph/ceph.radosgw.gateway.fastcgi.sock
log file=/var/log/radosgw/client.radosgw.gateway.log
rgw frontends=fastcgi socket_port=9000 socket_host=0.0.0.0
rgw print continue=false

2.4 目录及权限调整

建立数据目录

sudo mkdir -p /var/lib/ceph/radosgw/ceph-radosgw.gateway   
调整apache运行权限
sudo chown apache:apache /var/run/ceph

调整日志权限

sudo chown apache:apache /var/log/radosgw/client.radosgw.gateway.log

启动网关服务sudo /etc/init.d/ceph-radosgw start

2.5 网关配置文件

一个配置文件，用于web server和FastCGI之间的交互
sudo vi /etc/httpd/conf.d/rgw.conf

<VirtualHost *:80>
ServerName 101.67.163.34
DocumentRoot /var/www/html

ErrorLog /var/log/httpd/rgw_error.log
CustomLog /var/log/httpd/rgw_access.log combined

RewriteEngine On
RewriteRule .* - [E=HTTP_AUTHORIZATION:%{HTTP:Authorization},L]

SetEnv proxy-nokeepalive 1

ProxyPass / fcgi://101.67.163.34:9000/
</VirtualHost>

其中标红的地方是要根据实际状况填写

2.6 用户建立

radosgw-admin user create --uid=xuwenping --display-name="ceph xuwenping" --email=xuwenping@d***n.com
{
    "user_id": "xuwenping",
    "display_name": "ceph xuwenping",
    "email": "xuwenping@dnion.com",
    "suspended": 0,
    "max_buckets": 1000,
    "auid": 0,
    "subusers": [],
    "keys": [
        {
            "user": "xuwenping",
            "access_key": "4J3GD7GJIJKSDCVS1I9T",
            "secret_key": "yfmxvzQdWT4EmVDijOFp6oNt4kZ25y9wRVARas4I"
        }
    ],
    "swift_keys": [],
    "caps": [],
    "op_mask": "read, write, delete",
    "default_placement": "",
    "placement_tags": [],
    "bucket_quota": {
        "enabled": false,
        "max_size_kb": -1,
        "max_objects": -1
    },
    "user_quota": {
        "enabled": false,
        "max_size_kb": -1,
        "max_objects": -1
    },
    "temp_url_keys": []
}

建立SWIFT类型USER

sudo radosgw-admin subuser create --uid=xuwenping --subuser=xuwenping :swift --access=full

2015-10-10 14:19:19.854951 7f402eadc8a0  0 max_buckets=1000 specified=0
{
    "user_id": "xuwenping",
    "display_name": "ceph xuwenping",
    "email": "xuwenping@dnion.com",
    "suspended": 0,
    "max_buckets": 1000,
    "auid": 0,
    "subusers": [
        {
            "id": "xuwenping:swift",
            "permissions": "full-control"
        }
    ],
    "keys": [
        {
            "user": "xuwenping",
            "access_key": "4J3GD7GJIJKSDCVS1I9T",
            "secret_key": "yfmxvzQdWT4EmVDijOFp6oNt4kZ25y9wRVARas4I"
        },
        {
            "user": "xuwenping:swift",
            "access_key": "PEIT99BBWMZP31BD6S3I",
            "secret_key": ""
        }
    ],
    "swift_keys": [
        {
            "user": "xuwenping:swift",
            "secret_key": "qWHPhvUy4md1XSa2PSbcxUyMU5YXodlqxt0ZC2hn"
        }
    ],
    "caps": [],
    "op_mask": "read, write, delete",
    "default_placement": "",
    "placement_tags": [],
    "bucket_quota": {
        "enabled": false,
        "max_size_kb": -1,
        "max_objects": -1
    },
    "user_quota": {
        "enabled": false,
        "max_size_kb": -1,
        "max_objects": -1
    },
    "temp_url_keys": []
}

2.7 实际验证

编写了一段python代码，用于访问网关，并建立bucket，并经过list方法罗列出当前全部的bucket （官方示例）

依赖库安装

sudo yum install python-boto

import boto
import boto.s3.connection
access_key = '4J3GD7GJIJKSDCVS1I9T'
secret_key = 'yfmxvzQdWT4EmVDijOFp6oNt4kZ25y9wRVARas4I'
conn = boto.connect_s3(
aws_access_key_id = access_key,
aws_secret_access_key = secret_key,
host = '101.67.163.34',
is_secure=False,
calling_format = boto.s3.connection.OrdinaryCallingFormat(),
)
bucket = conn.create_bucket('my-new-bucket')
for bucket in conn.get_all_buckets():
        print "{name}\t{created}".format(
                name = bucket.name,
                created = bucket.creation_date,
)

运行结果

[root@gnop029-ct-zhejiang_wenzhou-16-34 ceph-rados]# python s3test.py 
my-new-bucket	2015-10-10T06:23:48.000Z

至此，Ceph集群的对象存储网关安装设置完毕

附：

有时候经过yum安装软件是报以下错误：

Downloading Packages:
warning: rpmts_HdrFromFdno: Header V3 RSA/SHA256 Signature, key ID 0608b895: NOKEY
Retrieving key from file:///etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-6


GPG key retrieval failed: [Errno 14] Could not open/read file:///etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-6

在执行安装命令时带上以下参数便可：

yum install mod_proxy_fcgi   --nogpgcheck