列表

fastDFS分布式文件服务器入门

一.FastDFS介绍

1.1 FastDFS简介

​ FastDFS 开源的分布式文件系统，用纯C语言开发。只能通过专有API进行文件存取访问，不支持POSIX接口方式，不能mount使用。它的主要功能包括：文件存储，文件同步和文件访问，以及高容量和负载均衡。主要解决了海量数据存储问题，特别适合以中小文件（建议范围：4KB < file_size <500MB）为载体的在线服务。

1.2 FastDFS架构

FastDFS架构包括 Tracker server和Storage server。客户端请求Tracker server进行文件上传、下载，通过Trackerserver调度最终由Storage server完成文件上传和下载。

FastDFS 系统有三个角色：跟踪服务器(Tracker Server)、存储服务器(Storage Server)和客户端(Client)。

　　Tracker Server：跟踪服务器，主要做调度工作，起到均衡的作用；负责管理所有的 storage server和 group，每个 storage 在启动后会连接 Tracker，告知自己所属 group 等信息，并保持周期性心跳。通过Trackerserver在文件上传时可以根据一些策略找到Storageserver提供文件上传服务。

　　Storage Server：存储服务器，主要提供容量和备份服务；以 group 为单位，每个 group 内可以有多台 storage server，数据互为备份。Storage server没有实现自己的文件系统而是利用操作系统 的文件系统来管理文件。

　　Client：客户端，上传下载数据的服务器，也就是我们自己的项目所部署在的服务器。

二.FastDFS安装

FastDFS 开源地址：https://github.com/happyfish100

百度云盘：software 提取码：41h3

2.1 环境，软件版本说明

​ 操作系统：centos7

​ Fast DFS：FastDFS_v5.05

​ ngnix：ngnix-1.9.9

​ nignx模块：fastdfs-nginx-module_v1.16

​ 依赖库：libfastcommonV1.0.7

不同版本安装时有些许差别

2.2 安装

2.2.1 准备系统

​ 我这里用的时虚拟机，之前装好的centos7。系统准备好之后，要测试一下网络是否通畅，我这里用的桥接模式。设置静态的IP地址。

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//查看一下网关，等会好知道修改那个文件
#ifconfig
enp0s3: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.1.110  netmask 255.255.255.0  broadcast 192.168.1.255
        inet6 fe80::c386:6589:6b16:64cb  prefixlen 64  scopeid 0x20<link>
        inet6 fe80::5b9d:7b1f:bb1f:4ec3  prefixlen 64  scopeid 0x20<link>
        ether 08:00:27:dc:9a:48  txqueuelen 1000  (Ethernet)
        RX packets 9130  bytes 800217 (781.4 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 3014  bytes 518483 (506.3 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
        inet 127.0.0.1  netmask 255.0.0.0
        inet6 ::1  prefixlen 128  scopeid 0x10<host>
        loop  txqueuelen 1  (Local Loopback)
        RX packets 1864  bytes 146189 (142.7 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 1864  bytes 146189 (142.7 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
        
// 上面看到网关名称  enp0s3,就去修改/etc/sysconfig/network-scripts/ifcfg-enp0s3
#vim /etc/sysconfig/network-scripts/ifcfg-enp0s3
BOOTPROTO="static"   //修改为静态的
IPADDR="192.168.1.103"    //本机ip地址
NETMASK="255.255.255.0"
GATEWAY="192.168.1.1"
DNS1="211.99.143.33"
DNS2="58.30.131.33"
//修改好后，需要重启网络
#service network restart
//centos7 查看主机名，设置主机名
#hostname
#hostnamectl set-hostname gaofeng2

2.2.2 安装GCC

因为FastDFS是C语言编写，因此FastDFS编译时需要依赖gcc

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//查看是否安装gcc
# whereis gcc
gcc: /usr/bin/gcc /usr/lib/gcc /usr/libexec/gcc /usr/share/man/man1/gcc.1.gz
//输出安装目录，说明已经安装过，如果未安装可以执行以下命令
# yum -y install gcc-c++

2.2.3 安装libevent

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# yum -y install libevent

2.2.4 安装libfastcommon

FastDFS 依赖的一些类库，要下载对应的版本

下载地址： https://github.com/happyfish100/libfastcommon/releases 选择合适的版本

我这里都下载好了，存放在/usr/software目录下

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# cd /usr/software
//解压
# tar -zxvf libfastcommonV1.0.7.tar.gz 
//进入到解压后的libfastcommon目录下
# cd libfastcommon-1.0.7
//编译
# ./make.sh
// 安装
#./make.sh install
mkdir -p /usr/lib64
install -m 755 libfastcommon.so /usr/lib64
mkdir -p /usr/include/fastcommon
install -m 644 common_define.h hash.h chain.h logger.h base64.h shared_func.h pthread_func.h ini_file_reader.h _os_bits.h sockopt.h sched_thread.h http_func.h md5.h local_ip_func.h avl_tree.h ioevent.h ioevent_loop.h fast_task_queue.h fast_timer.h process_ctrl.h fast_mblock.h connection_pool.h /usr/include/fastcommon
//把src目录下的libfastcommon.so 文件复制到/usr/lib目录下
#cp libfastcommon.so /usr/lib

2.2.5 安装FastDFS

下载安装包，上传到/usr/software目录下如果是在xshellx 工具下，可以直接使用rz命令

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# cd /usr/software
//解压文件
# tar -zxvf FastDFS_v5.05.tar.gz
// 编译
# ./make.sh
// 安装
# ./make.sh install
mkdir -p /usr/bin
mkdir -p /etc/fdfs
cp -f fdfs_trackerd /usr/bin
if [ ! -f /etc/fdfs/tracker.conf.sample ]; then cp -f ../conf/tracker.conf /etc/fdfs/tracker.conf.sample; fi
mkdir -p /usr/bin
mkdir -p /etc/fdfs
cp -f fdfs_storaged  /usr/bin
if [ ! -f /etc/fdfs/storage.conf.sample ]; then cp -f ../conf/storage.conf /etc/fdfs/storage.conf.sample; fi
mkdir -p /usr/bin
mkdir -p /etc/fdfs
mkdir -p /usr/lib64
cp -f fdfs_monitor fdfs_test fdfs_test1 fdfs_crc32 fdfs_upload_file fdfs_download_file fdfs_delete_file fdfs_file_info fdfs_appender_test fdfs_appender_test1 fdfs_append_file fdfs_upload_appender /usr/bin
if [ 0 -eq 1 ]; then cp -f libfdfsclient.a /usr/lib64; fi
if [ 1 -eq 1 ]; then cp -f libfdfsclient.so /usr/lib64; fi
mkdir -p /usr/include/fastdfs
cp -f ../common/fdfs_define.h ../common/fdfs_global.h ../common/mime_file_parser.h ../common/fdfs_http_shared.h ../tracker/tracker_types.h ../tracker/tracker_proto.h ../tracker/fdfs_shared_func.h ../storage/trunk_mgr/trunk_shared.h tracker_client.h storage_client.h storage_client1.h client_func.h client_global.h fdfs_client.h /usr/include/fastdfs
if [ ! -f /etc/fdfs/client.conf.sample ]; then cp -f ../conf/client.conf /etc/fdfs/client.conf.sample; fi

进入/etc/fdfs/目录下查看是否有配置文件如果没有的话，FastDFS/conf目录下的配置文件复制过去(目录根据实际情况修改)

默认安装后，

执行命令在/usr/bin目录下

服务脚本在 /etc/init.d/目录下

配置文件在 /etc/fdfs/目录下

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# cp /usr/software/FastDFS/conf/* /etc/fdfs/

2.2.6 配置tracker

进入/etc/fdfs目录下，查看是否有tracker.conf，如果没有，就把tracker.conf.sample文件修改为tracker.conf

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# ls
client.conf.sample  storage.conf.sample  tracker.conf.sample
# cp tracker.conf.sample tracker.conf
//修改tracker.conf,vi命令：i 进入编辑状态  编辑完成后按esc退出编辑   :wq!  保存并强制退出
# vi tracker.conf
//主要修改  
//base_path =/fastdfs/tracker   根目录，如果没有需要手动创建
//http.server_port=8080  端口是防止冲突 记住端口号，别忘了防火墙开放

//创建/fastdfs/tracker
# mkdir -p /fastdfs/tracker

修改防火墙配置

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//查看防火墙状态
# firewall-cmd --state
running
//查看已经开放的端口
# firewall-cmd --list-all
public (active)
  target: default
  icmp-block-inversion: no
  interfaces: enp0s3
  sources: 
  services: dhcpv6-client ssh
  ports: 3306/tcp 80/tcp 8080/tcp 2181/tcp
  protocols: 
  masquerade: no
  forward-ports: 
  sourceports: 
  icmp-blocks: 
  rich rules: 
// 开放 22122  和  7777 端口
# firewall-cmd --permanent --add-port=22122/tcp
success
# firewall-cmd --permanent --add-port=7777/tcp
success
//重启防火墙
#service firewalld restart

启动Tracker，第一坑即将出现

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#/etc/init.d/fdfs_trackerd start
#systemctl start fdfs_tracked

Job for fdfs_trackerd.service failed because the control process exited with error code. See “systemctl status fdfs_trackerd.service” and “journalctl -xe” for details.

#systemctl status fdfs_trackerd.service
● fdfs_trackerd.service - LSB: FastDFS tracker server
Loaded: loaded (/etc/rc.d/init.d/fdfs_trackerd; bad; vendor preset: disabled)
Active: failed (Result: exit-code) since 四 2020-02-27 16:29:06 CST; 1min 6s ago
Docs: man:systemd-sysv-generator(8)
Process: 3967 ExecStart=/etc/rc.d/init.d/fdfs_trackerd start (code=exited, status=2)

2月 27 16:29:06 gaofeng1 systemd[1]: Starting LSB: FastDFS tracker server…
2月 27 16:29:06 gaofeng1 fdfs_trackerd[3967]: file /usr/local/bin/fdfs_trackerd does not exist!
2月 27 16:29:06 gaofeng1 systemd[1]: fdfs_trackerd.service: control process exited, code=exited status=2
2月 27 16:29:06 gaofeng1 systemd[1]: Failed to start LSB: FastDFS tracker server.
2月 27 16:29:06 gaofeng1 systemd[1]: Unit fdfs_trackerd.service entered failed state.
2月 27 16:29:06 gaofeng1 systemd[1]: fdfs_trackerd.service failed.

file /usr/local/bin/fdfs_trackerd does not exist! 说没有找到该文件

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#find / -name fdfs_trackerd
/etc/rc.d/init.d/fdfs_trackerd
/usr/bin/fdfs_trackerd
/usr/software/FastDFS/tracker/fdfs_trackerd
/usr/software/FastDFS/init.d/fdfs_trackerd

// 复制一个去/usr/local/bin目录下，后面还缺少三个文件，一块复制过去
# cp /usr/bin/fdfs_trackerd /usr/local/bin/
# cp /usr/bin/stop.sh /usr/local/bin/
# cp /usr/bin/restart.sh /usr/local/bin/
然后再次启动
#systemctl start fdfs_trackerd
查看是否启动正常
## systemctl status fdfs_trackerd

● fdfs_trackerd.service - LSB: FastDFS tracker server
Loaded: loaded (/etc/rc.d/init.d/fdfs_trackerd; bad; vendor preset: disabled)
Active: active (running) since 四 2020-02-27 16:37:26 CST; 42s ago
Docs: man:systemd-sysv-generator(8)
Process: 4010 ExecStart=/etc/rc.d/init.d/fdfs_trackerd start (code=exited, status=0/SUCCESS)
CGroup: /system.slice/fdfs_trackerd.service
└─4013 /usr/local/bin/fdfs_trackerd /etc/fdfs/tracker.conf

2月 27 16:37:26 gaofeng1 systemd[1]: Starting LSB: FastDFS tracker server…
2月 27 16:37:26 gaofeng1 fdfs_trackerd[4010]: Starting FastDFS tracker server:
2月 27 16:37:26 gaofeng1 systemd[1]: Started LSB: FastDFS tracker server.

关闭tracker

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# systemctl stop fdfs_trackerd      (centos7 推荐)
# service fdfs_trackerd stop
# /etc/init.d/fdfs_trackerd stop

重启tracker

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# chkconfig fdfs_trackerd on

tracker server 目录及文件结构
Tracker服务启动成功后，会在base_path下创建data、logs两个目录。目录结构如下：

tracker server 目录及文件结构
Tracker服务启动成功后，会在base_path下创建data、logs两个目录。目录结构如下：

${base_path}
|data
| |storage_groups.dat：存储分组信息
| |storage_servers.dat：存储服务器列表
|logs
| |__trackerd.log： tracker server 日志文件
————————————————

2.2.7 配置storage

过程和配置tracker类似

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# cd /etc/fdfs
# cp storage.conf.sample storage.conf
# vim storage.conf

主要配置项：

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# 配置文件是否不生效，false 为生效
disabled=false 
# 指定此 storage server 所在 组(卷)
group_name=group1
# storage server 服务端口
port=23000
# 心跳间隔时间，单位为秒 (这里是指主动向 tracker server 发送心跳)
heart_beat_interval=30
# Storage 数据和日志目录地址(根目录必须存在，子目录会自动生成)  (注 :这里不是上传的文件存放的地址,之前版本是的,在某个版本后更改了)
base_path=/fastdfs/storage/base
# 存放文件时 storage server 支持多个路径。这里配置存放文件的基路径数目，通常只配一个目录。
store_path_count=1
# 逐一配置 store_path_count 个路径，索引号基于 0。
# 如果不配置 store_path0，那它就和 base_path 对应的路径一样。
store_path0=/fastdfs/storage
# FastDFS 存储文件时，采用了两级目录。这里配置存放文件的目录个数。 
# 如果本参数只为 N（如： 256），那么 storage server 在初次运行时，会在 store_path 下自动创建 N * N 个存放文件的子目录。
subdir_count_per_path=256
# tracker_server 的列表 ，会主动连接 tracker_server
# 有多个 tracker server 时，每个 tracker server 写一行
tracker_server=192.168.1.110:22122


# 允许系统同步的时间段 (默认是全天) 。一般用于避免高峰同步产生一些问题而设定。
sync_start_time=00:00
sync_end_time=23:59
# 访问端口 默认80  建议修改 防止冲突
http.server_port=7001

创建目录，和开放端口号

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#mkdir -p /fastdfs/storage/base
#firewall-cmd --permanent --add-port=7001/tcp
#firewall-cmd --permanent --add-port=23000/tcp
重启防火墙
#service firewalld restart

启动storage，可能会遇到和启动tracker一样的坑，解决方法也一样

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# cp /usr/bin/fdfs_storaged /usr/local/bin/
可以用这种方式启动
# /etc/init.d/fdfs_storaged start
# service fdfs_storaged start
# systemctl start fdfs_storaged  #centos7 推荐
# systemctl status fdfs_storaged
● fdfs_storaged.service - LSB: FastDFS storage server
   Loaded: loaded (/etc/rc.d/init.d/fdfs_storaged; bad; vendor preset: disabled)
   Active: active (running) since 四 2020-02-27 17:01:14 CST; 18s ago
     Docs: man:systemd-sysv-generator(8)
  Process: 2495 ExecStart=/etc/rc.d/init.d/fdfs_storaged start (code=exited, status=0/SUCCESS)
   CGroup: /system.slice/fdfs_storaged.service
           └─2499 /usr/local/bin/fdfs_storaged /etc/fdfs/storage.conf

2月 27 17:01:14 gaofeng1 systemd[1]: Starting LSB: FastDFS storage server...
2月 27 17:01:14 gaofeng1 fdfs_storaged[2495]: Starting FastDFS storage server:
2月 27 17:01:14 gaofeng1 systemd[1]: Started LSB: FastDFS storage server.

关闭storage

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[root@localhost fdfs]# service fdfs_storaged stop
[root@localhost fdfs]# systemctl stop fdfs_storaged #centos7 推荐
[root@localhost fdfs]# /etc/init.d/fdfs_storaged stop

查看storage和tracker能否正常通信

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# /usr/bin/fdfs_monitor /etc/fdfs/storage.conf
[2020-02-27 17:04:08] DEBUG - base_path=/fastdfs/storage/base, connect_timeout=30, network_timeout=60, tracker_server_count=1, 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=1, server_index=0

tracker server is 192.168.1.110:22122

group count: 1

Group 1:
group name = group1
disk total space = 15550 MB
disk free space = 12729 MB
trunk free space = 0 MB
storage server count = 1
active server count = 1
storage server port = 23000
storage HTTP port = 7001
store path count = 1
subdir count per path = 256
current write server index = 0
current trunk file id = 0
.......

设置storage开机启动

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# chkconfig fdfs_storaged on

2.2.8 测试

需要先修改tracker服务器上的client.conf配置文件，在/etc/fdfs 目录下

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# Client 的数据和日志目录  别忘了手动创建
base_path=/fastdfs/client
# Tracker端口
tracker_server=192.168.1.110:22122

先在系统根目录上传一张图片

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# # /usr/bin/fdfs_upload_file /etc/fdfs/client.conf timg.jpg 
group1/M00/00/00/wKgBbl5Xh8uABINMAAB80x5XCg8444.jpg

上传成功后，会返回一个存储路径。返回的文件ID由group、存储目录、两级子目录、fileid、文件后缀名（由客户端指定，主要用于区分文件类型）拼接而成。

至此，FastDFS安装成功了

配置nginx，http访问文件

修改nginx配置文件，先查看一下nginx 安装目录

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# whereis nginx
nginx: /usr/local/nginx
# vi /usr/local/nginx/conf/nginx.conf
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server {
        listen       7001;  #该端口号要和storage.conf 配置文件中http.server.port端口一致
        server_name  192.168.1.110;
        location /group1/M00 {
            alias /fastdfs/storage/data;
            autoindex on;
        }

        error_page   500 502 503 504  /50x.html;
        location = /50x.html {
            root   html;
        }

    }

浏览器访问：http://192.168.1.110:7001/group1/M00/00/00/wKgBbl5Xh8uABINMAAB80x5XCg8444.jpg

图片出来有木有。

安装nginx模块fastdfs-nginx-module

前面说过，同组下的storage会自动同步文件，如果我们上传一个文件后，里面访问。这个时候恰恰文件还没有同步完成，请求又被分配到另外的storage上，那么图片就会404了。fastdfs-nginx-module就是解决这个问题的。

首先解压fastdfs-nginx-module_v1.16.tar.gz，修改/fastdfs-nginx-module/src/config文件。去掉所有的local（三个），修改成如下：

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ngx_addon_name=ngx_http_fastdfs_module
HTTP_MODULES="$HTTP_MODULES ngx_http_fastdfs_module"
NGX_ADDON_SRCS="$NGX_ADDON_SRCS $ngx_addon_dir/ngx_http_fastdfs_module.c"
CORE_INCS="$CORE_INCS /usr/include/fastdfs /usr/include/fastcommon/"
CORE_LIBS="$CORE_LIBS -L/usr/lib -lfastcommon -lfdfsclient"
CFLAGS="$CFLAGS -D_FILE_OFFSET_BITS=64 -DFDFS_OUTPUT_CHUNK_SIZE='256*1024' -DFDFS_MOD_CONF_FILENAME='\"/etc/fdfs/mod_fastdfs.conf\"'"

#之前的
ngx_addon_name=ngx_http_fastdfs_module
HTTP_MODULES="$HTTP_MODULES ngx_http_fastdfs_module"
NGX_ADDON_SRCS="$NGX_ADDON_SRCS $ngx_addon_dir/ngx_http_fastdfs_module.c"
CORE_INCS="$CORE_INCS /usr/local/include/fastdfs /usr/local/include/fastcommon/"
CORE_LIBS="$CORE_LIBS -L/usr/local/lib -lfastcommon -lfdfsclient"
CFLAGS="$CFLAGS -D_FILE_OFFSET_BITS=64 -DFDFS_OUTPUT_CHUNK_SIZE='256*1024' -DFDFS_MOD_CONF_FILENAME='\"/etc/fdfs/mod_fastdfs.conf\"'"

拷贝usr/lib64目录下库文件libfdfsclient.so 

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#cp /usr/lib64/libfdfsclient.so /usr/lib

在nginx安装目录下执行如下命令：把module添加nginx中。通过设置安装参数方式添加模块。注意模块文件所在目录，我本地是和nginx文件目录同级

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#ls
apache-tomcat-8.5.50         fastdfs-nginx-module               libfastcommon-1.0.7         nginx-1.9.9.tar.gz
apache-tomcat-8.5.50.tar.gz  fastdfs-nginx-module_v1.16.tar.gz  libfastcommonV1.0.7.tar.gz  zookeeper-3.4.6
FastDFS                      FastDFS_v5.05.tar.gz               nginx-1.9.9                 zookeeper-3.4.6.tar.gz
#cd nginx-1.9.9
#./configure --add-module=../fastdfs-nginx-module/src
//从新编译nginx
make  && make install
//安装完成后，可以查看nginx的模块,依然去/usr/local/nginx/sbin目录下  V大写
# ./nginx -V
nginx version: nginx/1.9.9
built by gcc 4.8.5 20150623 (Red Hat 4.8.5-39) (GCC) 
configure arguments: --add-module=../fastdfs-nginx-module/src

复制 fastdfs-nginx-module 源码中的配置文件到/etc/fdfs 目录， 并修改

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#cp /usr/software/fastdfs-nginx-module/src/mod_fastdfs.conf /etc/fdfs/
#vi /etc/fdfs/mod_fastdfs.conf
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# 连接超时时间
connect_timeout=10
# Tracker Server
tracker_server=192.168.1.110:22122
# StorageServer 默认端口
storage_server_port=23000
# 如果文件ID的uri中包含/group**，则要设置为true
url_have_group_name = true
# Storage 配置的store_path0路径，必须和storage.conf中的一致
store_path0=/fastdfs/storage
# the base path to store log files
base_path=/fastdfs/storage/base

复制/usr/software/FastDFS/conf 目录下的http.conf mime.types anti-steal.jpg 到etc/fdfs目录下，这个很重要，不然nginx启动失败

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#cp http.conf mime.types /etc/fdfs/

再次修改nginx配置文件，注意头部 user root;

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# vi /usr/local/nginx/conf/nginx.conf
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user root;
worker_processes  1;
events {
    worker_connections  1024;
}
http {
    include       mime.types;
    default_type  application/octet-stream;
    sendfile        on;
    keepalive_timeout  65;
 
    server {
 
        listen      9888 ;
        server_name  192.168.0.200;
 
       # location /group1/M00{
         # alias /fastdfs/storage/data/;
        # autoindex on;
       #}
 location ~/group[0-9]/ {
                ngx_fastdfs_module;
            }
 
        error_page   500 502 503 504  /50x.html;
        location = /50x.html {
        root   html;
       }
    }
 
}

http://192.168.1.110:7001/group1/M00/00/00/wKgBbl5XlaCARCd2AAB80x5XCg8523.jpg

访问成功！！！！

其实如果是但storage的话，就不用配置fastdfs-nginx-module

有机会的话，在研究一下集群搭建。

—tracker.conf 配置文件

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# is this config file disabled
# false for enabled
# true for disabled
# 文件是否生效
disabled=false    

# bind an address of this host
# empty for bind all addresses of this host
bind_addr=

# the tracker server port
#默认运行端口
port=22122

# connect timeout in seconds
# default value is 30s
connect_timeout=30

# network timeout in seconds
# default value is 30s
network_timeout=60

# the base path to store data and log files
# 根目录，没有的话需要手动创建
base_path=/home/yuqing/fastdfs

# max concurrent connections this server supported
max_connections=256

# accept thread count
# default value is 1
# since V4.07
accept_threads=1

# work thread count, should <= max_connections
# default value is 4
# since V2.00
work_threads=4

# the method of selecting group to upload files
# 0: round robin
# 1: specify group
# 2: load balance, select the max free space group to upload file
store_lookup=2

# which group to upload file
# when store_lookup set to 1, must set store_group to the group name
store_group=group2

# which storage server to upload file
# 0: round robin (default)
# 1: the first server order by ip address
# 2: the first server order by priority (the minimal)
store_server=0

# which path(means disk or mount point) of the storage server to upload file
# 0: round robin
# 2: load balance, select the max free space path to upload file
store_path=0

# which storage server to download file
# 0: round robin (default)
# 1: the source storage server which the current file uploaded to
download_server=0

# reserved storage space for system or other applications.
# if the free(available) space of any stoarge server in 
# a group <= reserved_storage_space, 
# no file can be uploaded to this group.
# bytes unit can be one of follows:
### G or g for gigabyte(GB)
### M or m for megabyte(MB)
### K or k for kilobyte(KB)
### no unit for byte(B)
### XX.XX% as ratio such as reserved_storage_space = 10%
reserved_storage_space = 10%

#standard log level as syslog, case insensitive, value list:
### emerg for emergency
### alert
### crit for critical
### error
### warn for warning
### notice
### info
### debug
log_level=info

#unix group name to run this program, 
#not set (empty) means run by the group of current user
run_by_group=

#unix username to run this program,
#not set (empty) means run by current user
run_by_user=

# allow_hosts can ocur more than once, host can be hostname or ip address,
# "*" means match all ip addresses, can use range like this: 10.0.1.[1-15,20] or
# host[01-08,20-25].domain.com, for example:
# allow_hosts=10.0.1.[1-15,20]
# allow_hosts=host[01-08,20-25].domain.com
allow_hosts=*

# sync log buff to disk every interval seconds
# default value is 10 seconds
sync_log_buff_interval = 10

# check storage server alive interval seconds
check_active_interval = 120

# thread stack size, should >= 64KB
# default value is 64KB
thread_stack_size = 64KB

# auto adjust when the ip address of the storage server changed
# default value is true
storage_ip_changed_auto_adjust = true

# storage sync file max delay seconds
# default value is 86400 seconds (one day)
# since V2.00
storage_sync_file_max_delay = 86400

# the max time of storage sync a file
# default value is 300 seconds
# since V2.00
storage_sync_file_max_time = 300

# if use a trunk file to store several small files
# default value is false
# since V3.00
use_trunk_file = false 

# the min slot size, should <= 4KB
# default value is 256 bytes
# since V3.00
slot_min_size = 256

# the max slot size, should > slot_min_size
# store the upload file to trunk file when it's size <=  this value
# default value is 16MB
# since V3.00
slot_max_size = 16MB

# the trunk file size, should >= 4MB
# default value is 64MB
# since V3.00
trunk_file_size = 64MB

# if create trunk file advancely
# default value is false
# since V3.06
trunk_create_file_advance = false

# the time base to create trunk file
# the time format: HH:MM
# default value is 02:00
# since V3.06
trunk_create_file_time_base = 02:00

# the interval of create trunk file, unit: second
# default value is 38400 (one day)
# since V3.06
trunk_create_file_interval = 86400

# the threshold to create trunk file
# when the free trunk file size less than the threshold, will create 
# the trunk files
# default value is 0
# since V3.06
trunk_create_file_space_threshold = 20G

# if check trunk space occupying when loading trunk free spaces
# the occupied spaces will be ignored
# default value is false
# since V3.09
# NOTICE: set this parameter to true will slow the loading of trunk spaces 
# when startup. you should set this parameter to true when neccessary.
trunk_init_check_occupying = false

# if ignore storage_trunk.dat, reload from trunk binlog
# default value is false
# since V3.10
# set to true once for version upgrade when your version less than V3.10
trunk_init_reload_from_binlog = false

# the min interval for compressing the trunk binlog file
# unit: second
# default value is 0, 0 means never compress
# FastDFS compress the trunk binlog when trunk init and trunk destroy
# recommand to set this parameter to 86400 (one day)
# since V5.01
trunk_compress_binlog_min_interval = 0

# if use storage ID instead of IP address
# default value is false
# since V4.00
use_storage_id = false

# specify storage ids filename, can use relative or absolute path
# since V4.00
storage_ids_filename = storage_ids.conf

# id type of the storage server in the filename, values are:
## ip: the ip address of the storage server
## id: the server id of the storage server
# this paramter is valid only when use_storage_id set to true
# default value is ip
# since V4.03
id_type_in_filename = ip

# if store slave file use symbol link
# default value is false
# since V4.01
store_slave_file_use_link = false

# if rotate the error log every day
# default value is false
# since V4.02
rotate_error_log = false

# rotate error log time base, time format: Hour:Minute
# Hour from 0 to 23, Minute from 0 to 59
# default value is 00:00
# since V4.02
error_log_rotate_time=00:00

# rotate error log when the log file exceeds this size
# 0 means never rotates log file by log file size
# default value is 0
# since V4.02
rotate_error_log_size = 0

# keep days of the log files
# 0 means do not delete old log files
# default value is 0
log_file_keep_days = 0

# if use connection pool
# default value is false
# since V4.05
use_connection_pool = false

# connections whose the idle time exceeds this time will be closed
# unit: second
# default value is 3600
# since V4.05
connection_pool_max_idle_time = 3600

# HTTP port on this tracker server
# http访问端口号，为了防止冲突，建议修改
http.server_port=8080

# check storage HTTP server alive interval seconds
# <= 0 for never check
# default value is 30
http.check_alive_interval=30

# check storage HTTP server alive type, values are:
#   tcp : connect to the storge server with HTTP port only, 
#        do not request and get response
#   http: storage check alive url must return http status 200
# default value is tcp
http.check_alive_type=tcp

# check storage HTTP server alive uri/url
# NOTE: storage embed HTTP server support uri: /status.html
http.check_alive_uri=/status.html