【FastDFS分布式文件系统之一】：搭建、部署、配置
最近要提高小文件（100KB左右）的存储性能（主要是写入性能），想到了使用FastDFS因此需要对其性能做一个简单的测试。
1.安装FastDFS
cd /opt && mkdir fastdfs && cd fastdfs git clone https://github.com/happyfish100/fastdfs.git git clone https://github.com/happyfish100/libfastcommon.git cd /opt/fastdfs/libfastcommon ./make.sh && ./make.sh install cd /opt/fastdfs/fastdfs ./make.sh && ./make.sh install安装成功后，FastDFS安装在/usr/bin中。配置文件在/etc/fdfs中：
2.修改配置文件
配置文件放在/etc/fdfs下面：
client配置文件：/etc/fdfs/client.conf.sample
storage配置文件：/etc/fdfs/storage.com.sample
tracker配置文件：/etc/fdfs/tracker.com.sample
cd /etc/fdfs mv client.conf.sample client.conf mv storage.conf.sample storage.conf mv tracker.conf.sample tracker.confclient：node1
tracker server：node2 / node3
group1：storage server1(node4) /storage server2(node5) /storage server3(node6)
group2：storage server4(node7) /storage server5(node6) /storage server6(node8)
修改client.conf：
base_path=/mnt/xfsd/fastdfs/client tracker_server=node2:22122 tracker_server=node3:22122 #其他都采用默认其中base_path是客户端的数据和日志写入的目录，这个目录必须指定且提前创建好。
修改storage.conf：
base_path=/mnt/xfsd/fastdfs/storage max_connections=2048 accept_threads=4 work_threads=8 tracker_server=node2:22122 tracker_server=node3:22122 log_level=info #其他都采用默认max_connections：并发最大请求数，默认256，如果设置的比较小，那么如果并发请求达到300以上，就会造成失败，如果设置的太大（20480）又会造成storage server启动失败，不知道为什么。具体的参数配置可以见配置文件的注释。
修改tracker.conf：
base_path=/mnt/xfsd/fastdfs/tracker max_connections=2048 accept_threads=4 work_threads=8 log_level=info use_trunk_file = true值得一提的是use_trunk_file来进行小文件的合并，默认合并成为64MB的块。
3.启动服务
服务的启动，重启，状态查询等。
/usr/bin/fdfs_trackerd /etc/fdfs/tracker.conf /usr/bin/fdfs_storaged /etc/fdfs/storage.conf service fdfs_storaged status service fdfs_storaged start service fdfs_storaged stop service fdfs_storaged restart service fdfs_trackerd status service fdfs_trackerd start service fdfs_trackerd restart service fdfs_trackerd stop
4.检查服务
/usr/bin/fdfs_monitor /etc/fdfs/storage.conf输出如下信息：
[2016-03-08 17:40:36] DEBUG - base_path=/mnt/xfsd/fastdfs/storage, connect_timeout=30, network_timeout=60, tracker_server_count=2, anti_steal_token=0, anti_steal_secret_key length=0, use_connection_pool=0, g_connection_pool_max_idle_time=3600s, use_storage_id=0, storage server id count: 0
server_count=2, server_index=1
tracker server is XXXXXX:22122
group count: 2
Group 1:
group name = group1
disk total space = 6654860 MB
disk free space = 6430591 MB
trunk free space = 127 MB
storage server count = 3
active server count = 3
storage server port = 23000
storage HTTP port = 8888
store path count = 1
subdir count per path = 256
current write server index = 0
current trunk file id = 3481
Storage 1:
id = XXX.119
ip_addr = XXX.119 ACTIVE
http domain =
version = 5.08
join time = 2016-03-07 21:46:38
up time = 2016-03-07 21:46:38
total storage = 6654860 MB
free storage = 6431077 MB
upload priority = 10
store_path_count = 1
subdir_count_per_path = 256
storage_port = 23000
storage_http_port = 8888\
Storage 2:
……
Storage 3:
……
Group 2:
group name = group2
disk total space = 6654860 MB
disk free space = 6429913 MB
trunk free space = 152 MB
storage server count = 3
active server count = 3
storage server port = 23000
storage HTTP port = 8888
store path count = 1
subdir count per path = 256
current write server index = 2
current trunk file id = 3501
Storage 1:
id = XXX.122
ip_addr = XXX.122 ACTIVE
http domain =
version = 5.08
join time = 2016-03-07 21:50:57
up time = 2016-03-07 21:50:57
total storage = 6654860 MB
free storage = 6429917 MB
upload priority = 10
store_path_count = 1
subdir_count_per_path = 256
storage_port = 23000
storage_http_port = 8888
current_write_path = 0
source storage id =
if_trunk_server = 1
Storage 2:
……
Storage 3:
……
5.数据操作
在client端执行测试：
上传upload操作：
/usr/bin/fdfs_test /etc/fdfs/client.conf upload /data/files/bak/smallfile0
下载download操作：
6.重新部署方法
由于测试需要，将replica 2变成replica 3，那么只需要将tracer server以及storage server端的base_path下面的client,storage,tracker文件夹都删除掉，然后重新创建文件夹，重启各个server服务就好了，无需卸载，重新编译安装等。
Author：忆之独秀
Email：[email protected]
注明出处：http://blog.csdn.net/lavorange/article/details/50814086