分佈式文件系統（FastDFS+Tengine+fastdfs-nginx-module）

時間  2019-11-07
標籤 分佈式 文件 系統 fastdfs+tengine+fastdfs fastdfs tengine nginx module 欄目 系統架構 简体版
原文   原文鏈接

FastDFS介紹javascript

FastDFS 服務有三個角色：跟蹤服務器（tracker server）、存儲服務器（storage server）和客戶端（client）
tracker server：跟蹤服務器，主要作調度工做，起到均衡的做用；負責管理全部的 storage server和group，每一個 storage 在啓動後會鏈接 Tracker，告知本身所屬 group 等信息，並保持週期性心跳，Tracker根據 storage 心跳信息，創建 group--->[storage server list]的映射表；tracker 管理的元數據不多，會直接存放在內存；tracker 上的元信息都是由 storage 彙報的信息生成的，自己不須要持久化任何數據，tracker 之間是對等關係，所以擴展 tracker 服務很是容易，直接增長tracker 服務器便可，全部 tracker 都接受 stroage 心跳信息，生成元數據信息來提供讀寫服務（與其餘 Master-Slave 架構的優點是沒有單點，tracker 也不會成爲瓶頸，最終數據是和一個可用的Storage Server 進行傳輸的）css


storage server：存儲服務器，主要提供容量和備份服務；以 group 爲單位，每一個 group 內能夠包含多臺 storage server，數據互爲備份，存儲容量空間以 group 內容量最小的 storage 爲準；建議 group 內的 storage server 配置相同；以 group 爲單位組織存儲可以方便的進行應用隔離、負載均衡和副本數定製；缺點是 group 的容量受單機存儲容量的限制， 同時 group 內機器壞掉，數據恢復只能依賴 group 內其餘機器從新同步（壞盤替換，從新掛載重啓 fdfs_storaged 便可）html


多個 group 之間的存儲方式有 3 種策略：round robin（輪詢）、load  balance（選擇最大剩餘空間的組上傳文件）、specify group（指定 group 上傳）java


group 中 storage 存儲依賴本地文件系統，storage 可配置多個數據存儲目錄， 磁盤不作 raid，直接分別掛載到多個目錄，將這些目錄配置爲 storage 的數據目錄便可node


storage 接受寫請求時，會根據配置好的規則，選擇其中一個存儲目錄來存儲文件；爲避免單個目錄下的文件過多，storage 第一次啓動時，會在每一個數據存儲目錄裏建立 2 級子目錄，每級 256個，總共 65536 個，新寫的文件會以 hash 的方式被路由到其中某個子目錄下，而後將文件數據直接做爲一個本地文件存儲到該目錄中linux

wKiom1VnKebgGHIrAAHaxDu64YE088.jpg

總結：nginx

1.高可靠性：無單點故障 git

2.高吞吐性：只要 Group 足夠多，數據流量是足夠分散的github


實驗環境vim

IP地址
 服務角色
 系統環境
10.0.20.51
 tracker
 CentOS 6.6
10.0.12.143 storage CentOS 6.6
10.0.12.142 storage CentOS 6.6


FastDFS基礎服務安裝

# cd /usr/local/src
# wget https://codeload.github.com/happyfish100/libfastcommon/tar.gz/V1.0.7 -O libfastcommon-1.0.7.tar.gz
# tar xvzf libfastcommon-1.0.7.tar.gz
# cd libfastcommon-1.0.7
# ./make.sh
# ./make.sh install


# cd /usr/local/src
# wget http://softlayer-sng.dl.sourceforge.net/project/fastdfs/FastDFS%20Server%20Source%20Code/FastDFS%20Server%20with%20PHP%20Extension%20Source%20Code%20V5.05/FastDFS_v5.05.tar.gz
# tar xvzf FastDFS_v5.05.tar.gz
# cd FastDFS
# ./make.sh
# ./make.sh install


# mkdir -p /data/fastdfs


tracker配置(tracker節點)

# vim /etc/fdfs/tracker.conf

disabled=false
bind_addr=
port=22122
connect_timeout=30
network_timeout=60
base_path=/data/fastdfs
max_connections=1024
accept_threads=6
work_threads=24
store_lookup=2
store_group=group2
store_server=0
store_path=0
download_server=0
reserved_storage_space = 10%
log_level=info
run_by_group=
run_by_user=
allow_hosts=*
sync_log_buff_interval = 10
check_active_interval = 120
thread_stack_size = 64KB
storage_ip_changed_auto_adjust = true
storage_sync_file_max_delay = 86400
storage_sync_file_max_time = 300
use_trunk_file = false 
slot_min_size = 256
slot_max_size = 16MB
trunk_file_size = 64MB
trunk_create_file_advance = false
trunk_create_file_time_base = 02:00
trunk_create_file_interval = 86400
trunk_create_file_space_threshold = 20G
trunk_init_check_occupying = false
trunk_init_reload_from_binlog = false
trunk_compress_binlog_min_interval = 0
use_storage_id = false
storage_ids_filename = storage_ids.conf
id_type_in_filename = ip
store_slave_file_use_link = false
rotate_error_log = true
error_log_rotate_time=00:00
rotate_error_log_size = 0
log_file_keep_days = 7
use_connection_pool = false
connection_pool_max_idle_time = 3600
http.server_port=8080
http.check_alive_interval=30
http.check_alive_type=tcp
http.check_alive_uri=/status.html

# ln -s /usr/bin/fdfs_trackerd /usr/local/bin
# ln -s /usr/bin/stop.sh /usr/local/bin
# ln -s /usr/bin/restart.sh /usr/local/bin

# service fdfs_trackerd start


storage配置（storage節點）
# vim /etc/fdfs/storage.conf

disabled=false
group_name=group1
bind_addr=
client_bind=true
port=23000
connect_timeout=30
network_timeout=60
heart_beat_interval=30
stat_report_interval=60
base_path=/data/fastdfs
max_connections=1024
buff_size = 256KB
accept_threads=6
work_threads=24
disk_rw_separated = true
disk_reader_threads = 1
disk_writer_threads = 1
sync_wait_msec=50
sync_interval=0
sync_start_time=00:00
sync_end_time=23:59
write_mark_file_freq=500
store_path_count=1
store_path0=/data/fastdfs
subdir_count_per_path=256
tracker_server=10.0.20.51:22122
log_level=info
run_by_group=
run_by_user=
allow_hosts=*
file_distribute_path_mode=0
file_distribute_rotate_count=100
fsync_after_written_bytes=0
sync_log_buff_interval=10
sync_binlog_buff_interval=10
sync_stat_file_interval=300
thread_stack_size=512KB
upload_priority=10
if_alias_prefix=
check_file_duplicate=0
file_signature_method=hash
key_namespace=FastDFS
keep_alive=0
use_access_log = false
rotate_access_log = false
access_log_rotate_time=00:00
rotate_error_log = false
error_log_rotate_time=00:00
rotate_access_log_size = 0
rotate_error_log_size = 0
log_file_keep_days = 7
file_sync_skip_invalid_record=false
use_connection_pool = false
connection_pool_max_idle_time = 3600
http.domain_name=
http.server_port=8086

# ln -s /usr/bin/fdfs_storaged /usr/local/bin
# ln -s /usr/bin/stop.sh /usr/local/bin
# ln -s /usr/bin/restart.sh /usr/local/bin

# service fdfs_storaged start


nginx部署（storage節點）
在storage上安裝nginx主要是爲了提供http訪問服務，同時解決group中store服務器的同步延遲問題。
須要安裝的軟件包：zlib、pcre、openssl、tengine、fastdfs-nginx-module


# echo "/usr/local/lib" >>  /etc/ld.so.conf
# echo "/usr/local/lib64" >>  /etc/ld.so.conf
# /sbin/ldconfig


# mkdir -p /var/log/nginx
# mkdir -p /var/nginx_temp/{nginx_client,nginx_proxy,nginx_fastcgi}


# ln -s /usr/include/fastdfs/*.h /usr/include
# ln -s /usr/include/fastcommon/*.h /usr/include


# cd /usr/local/src
# wget http://sourceforge.net/projects/libpng/files/zlib/1.2.8/zlib-1.2.8.tar.gz
# tar xvzf zlib-1.2.8.tar.gz
# cd zlib-1.2.8
# ./configure --prefix=/usr/local
# make && make install


# cd /usr/local/src
# wget http://sourceforge.net/projects/pcre/files/pcre/8.36/pcre-8.36.tar.gz
# tar xvzf pcre-8.36.tar.gz
# cd pcre-8.36
# ./configure --prefix=/usr/local
# make && make install


# cd /usr/local/src
# wget http://www.openssl.org/source/openssl-1.0.1m.tar.gz
# tar xvzf openssl-1.0.1m.tar.gz
# cd openssl-1.0.1m
# ./config shared --prefix=/usr/local
# make && make install


# cd /usr/local/src
# wget http://cznic.dl.sourceforge.net/project/fastdfs/FastDFS%20Nginx%20Module%20Source%20Code/fastdfs-nginx-module_v1.16.tar.gz
# tar xvzf fastdfs-nginx-module_v1.16.tar.gz
# cp fastdfs-nginx-module/src/mod_fastdfs.conf /etc/fdfs


# cd /usr/local/src
# wget http://tengine.taobao.org/download/tengine-1.5.2.tar.gz
# tar xvzf tengine-1.5.2.tar.gz
# cd tengine-1.5.2
# ./configure --prefix=/usr/local/nginx \
--lock-path=/var/lock/nginx.lock \
--pid-path=/var/run/nginx.pid \
--error-log-path=/var/log/nginx/error.log \
--http-log-path=/var/log/nginx/access.log \
--user=nobody \
--group=nobody \
--with-pcre=../pcre-8.36 \
--with-pcre-opt=-fPIC \
--with-openssl=../openssl-1.0.1m \
--with-openssl-opt=-fPIC \
--with-zlib=../zlib-1.2.8 \
--with-zlib-opt=-fPIC \
--with-backtrace_module \
--with-http_stub_status_module \
--with-http_gzip_static_module \
--with-http_realip_module \
--without-select_module \
--without-poll_module \
--with-http_concat_module=shared \
--with-http_sysguard_module=shared \
--with-http_limit_conn_module=shared \
--with-http_limit_req_module=shared \
--with-http_split_clients_module=shared \
--with-http_footer_filter_module=shared \
--with-http_sub_module=shared \
--with-http_access_module=shared \
--with-http_addition_module=shared \
--with-http_referer_module=shared \
--with-http_rewrite_module=shared \
--with-http_memcached_module=shared \
--without-http_upstream_check_module \
--without-http_upstream_least_conn_module \
--without-http_upstream_keepalive_module \
--without-http_upstream_ip_hash_module \
--without-http_geo_module \
--http-client-body-temp-path=/var/nginx_temp/nginx_client \
--http-proxy-temp-path=/var/nginx_temp/nginx_proxy \
--http-fastcgi-temp-path=/var/nginx_temp/nginx_fastcgi \
--add-module=../fastdfs-nginx-module/src

# make && make install


# vim /usr/local/nginx/conf/nginx.conf

user nobody nobody;

worker_processes auto;
worker_cpu_affinity auto;

error_log /var/log/nginx/error.log crit;
pid /var/run/nginx.pid;
worker_rlimit_nofile 65535;

dso { 
    load ngx_http_rewrite_module.so; 
    load ngx_http_access_module.so; 
    load ngx_http_concat_module.so; 
    load ngx_http_limit_conn_module.so; 
    load ngx_http_limit_req_module.so; 
    load ngx_http_sysguard_module.so;
}

events { 
    use epoll; 
    worker_connections 10240;
}

http { 
    server_tokens off; 
    server_tag off; 
    autoindex off; 
    access_log off; 
    include mime.types; 
    default_type application/octet-stream;
    
    server_names_hash_bucket_size 128; 
    client_header_buffer_size 32k; 
    large_client_header_buffers 4 32k; 
    client_max_body_size 30m; 
    client_body_buffer_size 256k;
     
    sendfile on; 
    tcp_nopush on; 
    keepalive_timeout 60; 
    tcp_nodelay on;

    gzip on; 
    gzip_min_length 1k; 
    gzip_buffers 4 16k; 
    gzip_http_version 1.1; 
    gzip_comp_level 6; 
    gzip_types text/plain application/x-javascript text/css application/xml application/javascript text/javascript p_w_picpath/jpeg p_w_picpath/gif p_w_picpath/png; 
    gzip_vary on;
    
    fastcgi_connect_timeout 120; 
    fastcgi_read_timeout 120; 
    fastcgi_send_timeout 120; 
    fastcgi_buffer_size 1024k; 
    fastcgi_buffers 32 1024k; 
    fastcgi_busy_buffers_size 2048k; 
    fastcgi_temp_file_write_size 2048k;
    
    fastcgi_temp_path /var/nginx_temp/nginx_temp;
    
    log_format access '$remote_addr - $remote_user [$time_local] "$request"'  
                    '$status $body_bytes_sent "$http_referer"'  
                    '"$http_user_agent" $http_x_forwarded_for';
    
    server {  
        sysguard on;    
        
        sysguard_load load=24 action=/loadlimit;  
        sysguard_mem swapratio=24% action=/swaplimit;  
        sysguard_mem free=100M action=/freelimit;    
        
        location /loadlimit {   
            return 503;  
        }    
        
        location /swaplimit {   
            return 503;  
        }    
        
        location /freelimit {   
            return 503;  
        } 
    }
    
    server {         
        listen 8080;         
        server_name 10.0.12.143;
        
        location / {   
            root html;   
            index index.html index.htm;  
        }
        
        location ~/group[1-3]/M00 {
            root /data/fastdfs/data;
            ngx_fastdfs_module;
        }
    }
}

# vim /etc/fdfs/mod_fastdfs.conf

connect_timeout=2
network_timeout=30
base_path=/data/fastdfs
load_fdfs_parameters_from_tracker=true
storage_sync_file_max_delay = 86400
use_storage_id = false
storage_ids_filename = 
storage_ids.conftracker_server=10.0.20.51:22122
storage_server_port=23000
group_name=group1
url_have_group_name = true
store_path_count=1
store_path0=/data/fastdfs
log_level=info
log_filename=/var/log/fastdfs/mod_fastdfs.log
response_mode=proxy
if_alias_prefix=
flv_support = true
flv_extension = flv
#include http.conf
http.need_find_content_type=truegroup_count = 3

[group1]
group_name=group1
storage_server_port=23000
store_path_count=1
store_path0=/data/fastdfs

[group2]
group_name=group2
storage_server_port=23000
store_path_count=1
store_path0=/data/fastdfs

[group3]
group_name=group3
storage_server_port=23000
store_path_count=1
store_path0=/data/fastdfs

注：本次測試只用到了group1


# ln -s /data/fastdfs/data /data/fastdfs/data/M00
# cp /usr/local/src/FastDFS/conf/mime.types /etc/fdfs
# cp /usr/local/src/FastDFS/conf/http.conf /etc/fdfs
# cp /usr/local/src/FastDFS/conf/anti-steal.jpg /etc/fdfs


# mkdir -p /var/log/fastdfs
# chown -R nobody:nobody /var/log/fastdfs


# service nginx start
注：nginx啓動腳本見本文附錄


nginx部署（tracker節點）
在tracker上安裝nginx主要是爲了提供http訪問的反向代理、負載均衡以及緩存服務。
須要安裝的軟件包：zlib、pcre、openssl、luajit、geoip、tengine、ngx_cache_purge


# echo "/usr/local/lib" >> /etc/ld.so.conf
# echo "/usr/local/lib64" >> /etc/ld.so.conf
# /sbin/ldconfig


# mkdir -p /var/log/nginx
# mkdir -p /var/nginx_temp/{nginx_client,nginx_proxy,nginx_fastcgi,nginx_temp,nginx_cache}


# yum -y install libxml2 libxml2-devel libxslt libxslt-devel gd gd-devel
# cd /usr/local/src
# wget http://sourceforge.net/projects/libpng/files/zlib/1.2.8/zlib-1.2.8.tar.gz
# tar xvzf zlib-1.2.8.tar.gz
# cd zlib-1.2.8
# ./configure --prefix=/usr/local
# make && make install


# cd /usr/local/src
# wget http://sourceforge.net/projects/pcre/files/pcre/8.36/pcre-8.36.tar.gz
# tar xvzf pcre-8.36.tar.gz
# cd pcre-8.36
# ./configure --prefix=/usr/local
# make && make install


# cd /usr/local/src
# wget http://www.openssl.org/source/openssl-1.0.1m.tar.gz
# tar xvzf openssl-1.0.1m.tar.gz
# cd openssl-1.0.1m
# ./config shared --prefix=/usr/local
# make && make install


# cd /usr/local/src
# wget http://luajit.org/download/LuaJIT-2.0.4.tar.gz
# tar xvzf LuaJIT-2.0.4.tar.gz
# cd LuaJIT-2.0.4
# make PREFIX=/usr/local

# make install


# cd /usr/local/src
# wget http://pkgs.fedoraproject.org/repo/pkgs/GeoIP/GeoIP-1.6.5.tar.gz/be57b27082d81543611fcfab2f7d9c7a/GeoIP-1.6.5.tar.gz
# tar xvzf GeoIP-1.6.5.tar.gz
# cd GeoIP-1.6.5
# ./configure --prefix=/usr/local
# make && make install


# cd /usr/local/src
# wget http://labs.frickle.com/files/ngx_cache_purge-2.3.tar.gz
# tar xvzf ngx_cache_purge-2.3.tar.gz


# cd /usr/local/src
# wget http://tengine.taobao.org/download/tengine-1.5.2.tar.gz
# tar xvzf tengine-1.5.2.tar.gz
# cd tengine-1.5.2
# ./configure --prefix=/usr/local/nginx \
--lock-path=/var/lock/nginx.lock \
--pid-path=/var/run/nginx.pid \
--error-log-path=/var/log/nginx/error.log \
--http-log-path=/var/log/nginx/access.log \
--user=nobody \
--group=nobody \
--with-pcre=../pcre-8.36 \
--with-pcre-opt=-fPIC \
--with-openssl=../openssl-1.0.1m \
--with-openssl-opt=-fPIC \
--with-zlib=../zlib-1.2.8 \
--with-zlib-opt=-fPIC \
--with-backtrace_module \
--with-http_stub_status_module \
--with-http_gzip_static_module \
--with-http_realip_module \
--with-http_concat_module=shared \
--with-http_sysguard_module=shared \
--with-http_limit_conn_module=shared \
--with-http_limit_req_module=shared \
--with-http_split_clients_module=shared \
--with-http_footer_filter_module=shared \
--with-http_geoip_module=shared \
--with-http_sub_module=shared \
--with-http_access_module=shared \
--with-http_upstream_ip_hash_module=shared \
--with-http_upstream_least_conn_module=shared \
--with-http_referer_module=shared \
--with-http_rewrite_module=shared \
--with-http_memcached_module=shared \
--with-http_upstream_session_sticky_module=shared \
--with-http_addition_module=shared \
--with-http_xslt_module=shared \
--with-http_p_w_picpath_filter_module=shared \
--with-http_user_agent_module=shared \
--with-http_empty_gif_module=shared \
--with-http_browser_module=shared \
--with-http_map_module=shared \
--with-http_userid_filter_module=shared \
--with-http_charset_filter_module=shared \
--with-http_trim_filter_module=shared \
--with-http_lua_module=shared \
--without-http_fastcgi_module \
--without-http_uwsgi_module \
--without-http_scgi_module \
--without-select_module \
--without-poll_module \
--add-module=../ngx_cache_purge-2.3 \
--http-client-body-temp-path=/var/nginx_temp/nginx_client \
--http-proxy-temp-path=/var/nginx_temp/nginx_proxy \
--http-fastcgi-temp-path=/var/nginx_temp/nginx_fastcgi


# make && make install

# mkdir -p /usr/local/nginx/conf/{conf.d,vhost.d}


# vim /usr/local/nginx/conf/nginx.conf

user nobody nobody;

worker_processes auto;
worker_cpu_affinity auto;

error_log /var/log/nginx/error.log crit;
pid /var/run/nginx.pid;

worker_rlimit_nofile 65535;

dso { 
    load ngx_http_rewrite_module.so; 
    load ngx_http_access_module.so; 
    load ngx_http_concat_module.so; 
    load ngx_http_limit_conn_module.so; 
    load ngx_http_limit_req_module.so; 
    load ngx_http_sysguard_module.so; 
    load ngx_http_upstream_session_sticky_module.so; 
    load ngx_http_footer_filter_module.so; 
    load ngx_http_trim_filter_module.so; 
    load ngx_http_lua_module.so;
}

events { 
    use epoll; 
    worker_connections 10240;
}

http { 
    server_tokens off; 
    server_tag off; 
    autoindex off; 
    access_log off; 
    include mime.types; 
    default_type application/octet-stream;  
    
    server_names_hash_bucket_size 128; 
    client_header_buffer_size 32k; 
    large_client_header_buffers 4 32k; 
    client_max_body_size 30m; 
    client_body_buffer_size 256k;  
    
    sendfile on; 
    tcp_nopush on; 
    keepalive_timeout 60; 
    tcp_nodelay on;  
    
    gzip on; 
    gzip_min_length 1k; 
    gzip_buffers 4 16k; 
    gzip_http_version 1.1; 
    gzip_comp_level 6; 
    gzip_types text/plain application/x-javascript text/css application/xml application/javascript text/javascript p_w_picpath/jpeg p_w_picpath/gif p_w_picpath/png; 
    gzip_vary on;  
    
    proxy_connect_timeout 120; 
    proxy_read_timeout 120; 
    proxy_send_timeout 120; 
    proxy_buffer_size 128k; 
    proxy_buffers 4 128k; 
    proxy_busy_buffers_size 256k; 
    proxy_temp_file_write_size 256k; 
    proxy_headers_hash_max_size 1024; 
    proxy_headers_hash_bucket_size 128;  
    
    proxy_redirect off; 
    proxy_set_header Host $host; 
    proxy_set_header X-Real-IP $remote_addr; 
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;  
    
    proxy_temp_path /var/nginx_temp/nginx_temp; 
    proxy_cache_path /var/nginx_temp/nginx_cache levels=1:2 keys_zone=cache_one:2048m inactive=30m max_size=60g;  
    
    log_format access '$remote_addr - $remote_user [$time_local] "$request"'  
                      '$status $body_bytes_sent "$http_referer"'  
                      '"$http_user_agent" $http_x_forwarded_for';  
    
    server {  
        sysguard on;
          
        sysguard_load load=24 action=/loadlimit;  
        sysguard_mem swapratio=24% action=/swaplimit;  
        sysguard_mem free=100M action=/freelimit;    
        
        location /loadlimit {   
            return 503;  
        }
            
        location /swaplimit {   
            return 503;  
        } 
           
        location /freelimit {   
            return 503;  
        } 
    }
    
    include conf.d/*.conf; 
    include vhost.d/*.conf;
}

# vim /usr/local/nginx/conf/conf.d/fdfs_group1.conf

upstream fdfs_group1 { 
    consistent_hash $request_uri; 
    server 10.0.12.142:8080 id=100 weight=10; 
    server 10.0.12.143:8080 id=101 weight=10; 
    session_sticky;

    check interval=3000 rise=2 fall=5 timeout=1000 type=tcp;
}

# vim /usr/local/nginx/conf/vhost.d/fdfs_group1_vh.conf

server { 
    listen 8080; 
    server_name 10.0.20.51;
    
    location /group1/M00 {  
        proxy_next_upstream http_502 http_504 error timeout invalid_header;  
        proxy_cache cache_one;  
        proxy_cache_valid 200 304 1h;  
        proxy_cache_valid 301 302 30m;  
        proxy_cache_valid any 1m;  
        proxy_cache_key $host$uri$is_args$args;  
        add_header eleme '$upstream_cache_status from $host';  
        proxy_pass http://fdfs_group1;  
        expires 1d; 
    }
    
    location ~ /purge(/.*) {  
        allow 127.0.0.1;  
        allow 10.0.0.0/8;  
        allow 172.0.0.0/8;  
        deny all;  
        proxy_cache_purge cache_one $host$1$is_args$args; 
    }
    
    location ~ health_status {  
        check_status;  
        allow 127.0.0.1;  
        allow 10.0.0.0/8;  
        allow 172.0.0.0/8;  
        deny all; 
    }
}

# service nginx start
注：nginx啓動腳本見本文附錄


基礎測試（tracker節點）
# vim /etc/fdfs/client.conf

connect_timeout=30
network_timeout=60
base_path=/data/fastdfs
tracker_server=10.0.20.51:22122
log_level=info
use_connection_pool = false
connection_pool_max_idle_time = 3600
load_fdfs_parameters_from_tracker=false
use_storage_id = false
storage_ids_filename = storage_ids.conf
http.tracker_server_port=8080

文件上傳
# fdfs_upload_file /etc/fdfs/client.conf /usr/local/nginx/conf/nginx.conf

經過瀏覽器訪問，好比：
http://10.0.20.51:8080/group1/M00/00/00/CgAMj1VmJoCAJQ64AAAH548RQaY07.conf

文件緩存清除，好比：
http://10.0.20.51:8080/purge/group1/M00/00/00/CgAMj1VmJoCAJQ64AAAH548RQaY07.conf

文件下載
# fdfs_download_file /etc/fdfs/client.conf group1/M00/00/00/CgAMj1VmJoCAJQ64AAAH548RQaY07.conf

文件屬性信息查看
# fdfs_file_info /etc/fdfs/client.conf group1/M00/00/00/CgAMj1VmJoCAJQ64AAAH548RQaY07.conf

文件刪除
# fdfs_delete_file /etc/fdfs/client.conf group1/M00/00/00/CgAMj1VmJoCAJQ64AAAH548RQaY07.conf

查看系統狀態
# fdfs_monitor /etc/fdfs/client.conf | grep ACTIVE

查看存儲節點信息（storage）
# fdfs_monitor /etc/fdfs/storage.conf


附錄
nginx啓動腳本：
/etc/init.d/nginx

#!/bin/sh
#
# nginx - this script start and stop the nginx daemon
#
# chkconfig: 2345
# description: Startup script for nginx
# processname: nginx
# config: /usr/local/nginx/conf/nginx.conf
# pidfile: /var/run/nginx.pid
#
# code by rocketzhang
#
PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin

DAEMON="/usr/local/nginx/sbin/nginx"
CNFFILE="/usr/local/nginx/conf/nginx.conf"
PIDFILE="/var/run/nginx.pid"
LOCKFILE="/var/lock/nginx.lock"

RETVAL=0

set -e
[[ -x "$DAEMON" ]] || exit 0

start() { 
    [[ -x $DAEMON ]] || exit 5 
    [[ -f $CNFFILE ]] || exit 6  
    
    echo -n "Startting Nginx......" 
    $DAEMON -c $CNFFILE || echo -n "Nginx already running!" 
    RETVAL=$? 
    echo 
    [[ $RETVAL -eq 0 ]] && touch $LOCKFILE
}

stop() { 
    echo -n "Stopping Nginx......"
    
    if [[ -n `ps aux | grep nginx | awk '/master/{print $2}'` ]]; then  
        kill -QUIT `ps aux | grep nginx | awk '/master/{print $2}'`  
        RETVAL=$?  
        echo  
        [[ $RETVAL -eq 0 ]] && rm -f $LOCKFILE $PIDFILE 
    fi
}

reload() {  
    echo -n "Reloading Nginx......"

    if [[ -n `ps aux | grep nginx | awk '/master/{print $2}'` ]]; then  
        kill -HUP `ps aux | grep nginx | awk '/master/{print $2}'`  
        RETVAL=$?  
        echo 
    fi
} 

case "$1" in
start) 
    start 
    ;;

stop) 
    stop 
    ;;

reload) 
    reload 
    ;;

restart) 
    stop 
    sleep 1 
    start 
    ;;

*) 
    echo "Usage: service nginx {start|stop|reload|restart}" 
    RETVAL=1 
    ;;
esac

exit $RETVAL

參考文章：
http://blog.csdn.net/hfty290/article/details/42076205

http://www.simlinux.com/books/FastDFS.pdf

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