简单介绍：
FastDFS作者余庆，是一套开源的分布式文件系统。
功能：文件存储、同步、上传、下载，提供负载均衡功能，适合用于图片、视频的存放。
角色：
tracker
作用：任务调度接受客户端的访问，检索存储节点，为客户端提供一台可用的storage。
storage
作用：接受Tracker的调度，响应客户端请求，将客户端发来的文件存储至相应存储位置，读取请求的文件，发送给客户端。
以下使用三台虚拟机搭建实验环境:
三台机器充当存储节点，其中两台配置tracker做主备关系同时充当storage角色，当一台tracker down机后另外一台可以提供正常的访问连接。
tracker01： 192.168.56.101
tracker02： 192.168.56.102
storage03：192.168.56.103
准备工作：
OS: CentoOS6.8
在所有节点上安装依赖库：
yum install -y gcc libevent libevent-doc libevent-devel libevent-headers make
所需软件包：
FastDFS_v4.06.tar.gz
fastdfs-nginx-module_v1.15.tar.gz (配置web访问时需要nginx支持此模块)
开始：第一步
[root@Master ~]# tar -xf FastDFS_v4.06.tar.gz[root@Master ~]# cd FastDFS[root@Master FastDFS]# lltotal 124drwxrwxr-x. 3 nginx nginx 4096 Feb 15 2013 clientdrwxrwxr-x. 2 nginx nginx 4096 Feb 15 2013 commondrwxrwxr-x. 2 nginx nginx 4096 Feb 15 2013 conf-rw-rw-r--. 1 nginx nginx 35067 Jul 28 2008 COPYING-3_0.txt-rw-rw-r--. 1 nginx nginx 28437 Jan 24 2013 HISTORYdrwxrwxr-x. 2 nginx nginx 4096 Feb 15 2013 init.d-rw-rw-r--. 1 nginx nginx 7757 Dec 23 2011 INSTALL-rwxrwxr-x. 1 nginx nginx 5133 Dec 27 2012 make.shdrwxrwxr-x. 2 nginx nginx 4096 Feb 15 2013 php_client-rw-rw-r--. 1 nginx nginx 2380 Jul 28 2008 README-rwxrwxr-x. 1 nginx nginx 1768 Apr 12 2010 restart.sh-rwxrwxr-x. 1 nginx nginx 1680 Apr 10 2010 stop.shdrwxrwxr-x. 4 nginx nginx 4096 Feb 15 2013 storagedrwxrwxr-x. 2 nginx nginx 4096 Feb 15 2013 testdrwxrwxr-x. 2 nginx nginx 4096 Feb 15 2013 tracker[root@Master FastDFS]# ./make.sh && ./make.sh install[root@Master FastDFS]# cp conf/storage_ids.conf /etc/fdfs/[root@Master FastDFS]# cp init.d/fdfs_trackerd /etc/init.d #拷贝tracker启动文件[root@Master FastDFS]# cp init.d/fdfs_storaged /etc/init.d #拷贝storage启动文件
建议：编译前请先阅读INSTALL file
第二步：创建数据目录
mkdir -p /data/fastdfs/tracker #创建tracker文件存放路径mkdir -p /data/fastdfs/storage #创建storage 文件存放路径mkdir -p /data/fastdfs/client #创建client 文件存放路径
第三步：修改配置文件
[root@Master fdfs]# lltotal 64-rw-r--r--. 1 root root 1500 Jun 26 14:36 client.conf-rw-r--r--. 1 root root 858 Jun 23 15:42 http.conf-rw-r--r--. 1 root root 31172 Jun 23 15:42 mime.types-rw-r--r--. 1 root root 3898 Jun 26 15:35 mod_fastdfs.conf-rw-r--r--. 1 root root 7496 Jun 26 15:22 storage.conf-rw-r--r--. 1 root root 171 Jun 26 15:45 storage_ids.conf-rw-r--r--. 1 root root 6624 Jun 26 16:04 tracker.conf#以上目录处mod_fastdfs.conf文件外如缺少其他文件请检查 libevent 是否安装[root@Master fdfs]# grep -vE "^#|^$" tracker.confdisabled=falsebind_addr=port=22122connect_timeout=30network_timeout=60base_path=/data/fastdfs/trackermax_connections=4096work_threads=4store_lookup=0store_server=0store_path=0download_server=0reserved_storage_space = 10%log_level=inforun_by_group=run_by_user=allow_hosts=*sync_log_buff_interval = 10check_active_interval = 120thread_stack_size = 64KBstorage_ip_changed_auto_adjust = truestorage_sync_file_max_delay = 86400storage_sync_file_max_time = 300use_trunk_file = falseslot_min_size = 256slot_max_size = 16MBtrunk_file_size = 64MBtrunk_create_file_advance = falsetrunk_create_file_time_base = 02:00trunk_create_file_interval = 86400trunk_create_file_space_threshold = 20Gtrunk_init_check_occupying = falsetrunk_init_reload_from_binlog = falseuse_storage_id = falsestorage_ids_filename = storage_ids.confid_type_in_filename = ipstore_slave_file_use_link = falserotate_error_log = falseerror_log_rotate_time=00:00rotate_error_log_size = 0use_connection_pool = falseconnection_pool_max_idle_time = 3600http.server_port=8080http.check_alive_interval=30http.check_alive_type=tcphttp.check_alive_uri=/status.html#以上为配置文件内容，各参数的含义请自行了解。
cat /etc/fdfs/storage_ids.conf
[root@Master fdfs]# cat storage_ids.conf#100001 group1 192.168.56.101 100002 group1 192.168.56.102 100003 group1 192.168.56.103
[root@Master fdfs]# grep -vE '^#|^$' client.conf
connect_timeout=30network_timeout=60base_path=/data/fastdfs/clienttracker_server=192.168.56.101:22122tracker_server=192.168.56.102:22122log_level=infouse_connection_pool = falseconnection_pool_max_idle_time = 3600load_fdfs_parameters_from_tracker=falseuse_storage_id = falsestorage_ids_filename = storage_ids.confhttp.tracker_server_port=8080
请在所有tracker主机修改/etc/fdfs/tracker.conf文件
请在所有storage主机修改/etc/fdfs/storage.conf文件
cat /etc/fdfs/storage.conf
[root@Master fdfs]# grep -vE "^#|^$" storage.confdisabled=falsegroup_name=group1bind_addr=client_bind=trueport=23000connect_timeout=30network_timeout=60heart_beat_interval=30stat_report_interval=60base_path=/data/fastdfs/storagemax_connections=256buff_size = 256KBwork_threads=4disk_rw_separated = truedisk_reader_threads = 1disk_writer_threads = 1sync_wait_msec=50sync_interval=0sync_start_time=00:00sync_end_time=23:59write_mark_file_freq=500store_path_count=1store_path0=/data/fastdfs/storagesubdir_count_per_path=256tracker_server=192.168.56.101:22122tracker_server=192.168.56.102:22122log_level=inforun_by_group=run_by_user=allow_hosts=*file_distribute_path_mode=0file_distribute_rotate_count=100fsync_after_written_bytes=0sync_log_buff_interval=10sync_binlog_buff_interval=10sync_stat_file_interval=300thread_stack_size=512KBupload_priority=10if_alias_prefix=check_file_duplicate=0file_signature_method=hashkey_namespace=FastDFSkeep_alive=0use_access_log = falserotate_access_log = falseaccess_log_rotate_time=00:00rotate_error_log = falseerror_log_rotate_time=00:00rotate_access_log_size = 0rotate_error_log_size = 0file_sync_skip_invalid_record=falseuse_connection_pool = falseconnection_pool_max_idle_time = 3600http.domain_name=http.server_port=8888
第四步：启动tracker and storage
[root@Master fdfs]# /etc/init.d/fdfs_trackerd start[root@Master fdfs]# /etc/init.d/fdfs_storaged start[root@Master fdfs]# ps -ef|grep fdfsroot 3157 1 0 11:55 ? 00:00:00 /usr/local/bin/fdfs_trackerd /etc/fdfs/tracker.confroot 3188 1 0 11:56 ? 00:00:00 /usr/local/bin/fdfs_storaged /etc/fdfs/storage.confroot 3217 2434 0 11:57 pts/0 00:00:00 grep fdfs[root@Master fdfs]#
注意：如果启动失败请查看日志/data/fastdfs/tracker/logs/trackerd.log
至此：tracker和storage启动完毕。
查看集群状态：
[root@Master ~]# /usr/local/bin/fdfs_monitor /etc/fdfs/storage.conf
[2017-06-27 12:02:31] DEBUG - base_path=/data/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=0tracker server is 192.168.56.101:22122group count: 1Group 1:group name = group1disk total space = 8447 MBdisk free space = 4924 MBtrunk free space = 0 MBstorage server count = 3active server count = 1storage server port = 23000storage HTTP port = 8888store path count = 1subdir count per path = 256current write server index = 0current trunk file id = 0 Storage 1: id = 192.168.56.101 ip_addr = 192.168.56.101 (Master) WAIT_SYNC http domain = version = 4.06 join time = 2017-06-26 15:22:46 up time = 2017-06-27 11:49:39 total storage = 0 MB free storage = 0 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= 0 total_upload_count = 0 success_upload_count = 0 total_append_count = 0 success_append_count = 0 total_modify_count = 0 success_modify_count = 0 total_truncate_count = 0 success_truncate_count = 0 total_set_meta_count = 0 success_set_meta_count = 0 total_delete_count = 0 success_delete_count = 0 total_download_count = 0 success_download_count = 0 total_get_meta_count = 0 success_get_meta_count = 0 total_create_link_count = 0 success_create_link_count = 0 total_delete_link_count = 0 success_delete_link_count = 0 total_upload_bytes = 0 success_upload_bytes = 0 total_append_bytes = 0 success_append_bytes = 0 total_modify_bytes = 0 success_modify_bytes = 0 stotal_download_bytes = 0 success_download_bytes = 0 total_sync_in_bytes = 0 success_sync_in_bytes = 0 total_sync_out_bytes = 0 success_sync_out_bytes = 0 total_file_open_count = 0 success_file_open_count = 0 total_file_read_count = 0 success_file_read_count = 0 total_file_write_count = 0 success_file_write_count = 0 last_heart_beat_time = 1970-01-01 08:00:00 last_source_update = 1970-01-01 08:00:00 last_sync_update = 1970-01-01 08:00:00 last_synced_timestamp = 1970-01-01 08:00:00 (never synced) Storage 2: id = 192.168.56.102 ip_addr = 192.168.56.102 (Minion02) ACTIVE http domain = version = 4.06 join time = 2017-06-26 15:12:53 up time = 2017-06-27 11:50:08 total storage = 8447 MB free storage = 4945 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= 0 total_upload_count = 6 success_upload_count = 6 total_append_count = 0 success_append_count = 0 total_modify_count = 0 success_modify_count = 0 total_truncate_count = 0 success_truncate_count = 0 total_set_meta_count = 6 success_set_meta_count = 6 total_delete_count = 0 success_delete_count = 0 total_download_count = 0 success_download_count = 0 total_get_meta_count = 0 success_get_meta_count = 0 total_create_link_count = 0 success_create_link_count = 0 total_delete_link_count = 0 success_delete_link_count = 0 total_upload_bytes = 63284 success_upload_bytes = 63284 total_append_bytes = 0 success_append_bytes = 0 total_modify_bytes = 0 success_modify_bytes = 0 stotal_download_bytes = 0 success_download_bytes = 0 total_sync_in_bytes = 120 success_sync_in_bytes = 120 total_sync_out_bytes = 240 success_sync_out_bytes = 240 total_file_open_count = 10 success_file_open_count = 10 total_file_read_count = 0 success_file_read_count = 0 total_file_write_count = 10 success_file_write_count = 10 last_heart_beat_time = 2017-06-27 12:02:14 last_source_update = 2017-06-27 12:01:01 last_sync_update = 2017-06-26 15:55:03 last_synced_timestamp = 1970-01-01 08:00:00 (never synced) Storage 3: id = 192.168.56.103 ip_addr = 192.168.56.103 (Minion03) WAIT_SYNC http domain = version = 4.06 join time = 2017-06-26 15:14:03 up time = 2017-06-27 11:50:25 total storage = 8447 MB free storage = 4924 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= 192.168.56.102 if_trunk_server= 0 total_upload_count = 2 success_upload_count = 2 total_append_count = 0 success_append_count = 0 total_modify_count = 0 success_modify_count = 0 total_truncate_count = 0 success_truncate_count = 0 total_set_meta_count = 2 success_set_meta_count = 2 total_delete_count = 0 success_delete_count = 0 total_download_count = 0 success_download_count = 0 total_get_meta_count = 0 success_get_meta_count = 0 total_create_link_count = 0 success_create_link_count = 0 total_delete_link_count = 0 success_delete_link_count = 0 total_upload_bytes = 22 success_upload_bytes = 22 total_append_bytes = 0 success_append_bytes = 0 total_modify_bytes = 0 success_modify_bytes = 0 stotal_download_bytes = 0 success_download_bytes = 0 total_sync_in_bytes = 995 success_sync_in_bytes = 240 total_sync_out_bytes = 120 success_sync_out_bytes = 120 total_file_open_count = 10 success_file_open_count = 10 total_file_read_count = 0 success_file_read_count = 0 total_file_write_count = 10 success_file_write_count = 10 last_heart_beat_time = 2017-06-27 12:02:10 last_source_update = 2017-06-26 15:54:52 last_sync_update = 2017-06-26 16:04:33 last_synced_timestamp = 1970-01-01 08:00:00 (never synced)测试：
上传文件至FastDFS，上传多个文件至storage查看上传位置是否有变化
停掉tracker01 查看是否切换至tracker02
上传文件：
[root@Master ~]# /usr/local/bin/fdfs_test /etc/fdfs/client.conf upload install.log
至此：end
如有问题欢迎留言探讨。。。。3Q