FastDFS配置文件具体解释

喜欢ヅ旅行 2023-08-17 16:31 241阅读 0赞

**tracker.conf 配置文件相关配置说明及注释**

\# 这个配置文件是否无效，false表示有效  
\# is this config file disabled  
\# false for enabled  
\# true for disabled  
disabled=false

\# 是否绑定IP  
\# bind\_addr= 后面为绑定的IP地址 (经常使用于服务器有多个IP但仅仅希望一个IP提供服务)。假设不填则表示全部的(一般不填就OK)  
\# bind an address of this host  
\# empty for bind all addresses of this host  
bind\_addr=

\# 提供服务的端口  
\# the tracker server port  
port=22122

\# 连接超时时间，针对socket套接字函数connect  
\# connect timeout in seconds  
\# default value is 30s  
connect\_timeout=30

\# tracker server的网络超时，单位为秒。  
发送或接收数据时。假设在超时时间后还不能发送或接收数据，则本次网络通信失败  
\# network timeout in seconds  
\# default value is 30s  
network\_timeout=60

\# the base path to store data and log files  
base\_path=/home/yuqing/fastdfs

\# base\_path 文件夹地址(根文件夹必须存在,子文件夹会自己主动创建)  
\# 附文件夹说明:  
\# tracker server文件夹及文件结构：  
\# $\{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

\#数据文件storage\_groups.dat和storage\_servers.dat中的记录之间以换行符（\\n）分隔，字段之间以西文逗号（,）分隔。  
\#storage\_groups.dat中的字段依次为：  
\# 1. group\_name：组名  
\# 2. storage\_port：storage server端口号

\#storage\_servers.dat中记录storage server相关信息，字段依次为：  
\# 1. group\_name：所属组名  
\# 2. ip\_addr：ip地址  
\# 3. status：状态  
\# 4. sync\_src\_ip\_addr：向该storage server同步已有数据文件的源服务器  
\# 5. sync\_until\_timestamp：同步已有数据文件的截至时间（UNIX时间戳）  
\# 6. stat.total\_upload\_count：上传文件次数  
\# 7. stat.success\_upload\_count：成功上传文件次数  
\# 8. stat.total\_set\_meta\_count：更改meta data次数  
\# 9. stat.success\_set\_meta\_count：成功更改meta data次数  
\# 10. stat.total\_delete\_count：删除文件次数  
\# 11. stat.success\_delete\_count：成功删除文件次数  
\# 12. stat.total\_download\_count：下载文件次数  
\# 13. stat.success\_download\_count：成功下载文件次数  
\# 14. stat.total\_get\_meta\_count：获取meta data次数  
\# 15. stat.success\_get\_meta\_count：成功获取meta data次数  
\# 16. stat.last\_source\_update：近期一次源头更新时间（更新操作来自客户端）  
\# 17. stat.last\_sync\_update：近期一次同步更新时间（更新操作来自其它storage server的同步）

\# 系统提供服务时的最大连接数。

对于V1.x，因一个连接由一个线程服务，也就是工作线程数。  
\# 对于V2.x。最大连接数和工作线程数没有不论什么关系  
\# max concurrent connections this server supported  
max\_connections=256

\# work thread count, should <= max\_connections  
\# default value is 4  
\# since V2.00  
\# V2.0引入的这个參数，工作线程数，通常设置为CPU数  
work\_threads=4

\# 上传组(卷) 的方式 0:轮询方式 1: 指定组 2: 平衡负载(选择最大剩余空间的组(卷)上传)  
\# 这里假设在应用层指定了上传到一个固定组,那么这个參数被绕过  
\# 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

\# 当上一个參数设定为1 时 (store\_lookup=1，即指定组名时)，必须设置本參数为系统中存在的一个组名。假设选择其它的上传方式。这个參数就没有效了  
\# which group to upload file  
\# when store\_lookup set to 1, must set store\_group to the group name  
store\_group=group2

\# 选择哪个storage server 进行上传操作(一个文件被上传后，这个storage server就相当于这个文件的storage server源，会对同组的storage server推送这个文件达到同步效果)  
\# 0: 轮询方式  
\# 1: 依据ip 地址进行排序选择第一个服务器（IP地址最小者）  
\# 2: 依据优先级进行排序（上传优先级由storage server来设置，參数名为upload\_priority）  
\# 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

\# 选择storage server 中的哪个文件夹进行上传。

storage server能够有多个存放文件的base path（能够理解为多个磁盘）。

\# 0: 轮流方式。多个文件夹依次存放文件  
\# 2: 选择剩余空间最大的文件夹存放文件（注意：剩余磁盘空间是动态的。因此存储到的文件夹或磁盘可能也是变化的）  
\# 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

\# 选择哪个 storage server 作为下载服务器  
\# 0: 轮询方式，能够下载当前文件的任一storage server  
\# 1: 哪个为源storage server 就用哪一个 (前面说过了这个storage server源 是怎样产生的) 就是之前上传到哪个storage server服务器就是哪个了  
\# which storage server to download file  
\# 0: round robin (default)  
\# 1: the source storage server which the current file uploaded to  
download\_server=0

\# storage server 上保留的空间，保证系统或其它应用需求空间。能够用绝对值或者百分比（V4開始支持百分比方式）。  
\#(指出 假设同组的服务器的硬盘大小一样,以最小的为准,也就是仅仅要同组中有一台服务器达到这个标准了,这个标准就生效,原因就是由于他们进行备份)  
\# 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%

\# 选择日志级别  
\#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

\# 操作系统执行FastDFS的用户组 (不填 就是当前用户组,哪个启动进程就是哪个)  
\#unix group name to run this program,  
\#not set (empty) means run by the group of current user  
run\_by\_group=

\# 操作系统执行FastDFS的用户 (不填 就是当前用户,哪个启动进程就是哪个)  
\#unix username to run this program,  
\#not set (empty) means run by current user  
run\_by\_user=

\# 能够连接到此 tracker server 的ip范围（对全部类型的连接都有影响，包含客户端，storage server）  
\# 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=\*

\# 同步或刷新日志信息到硬盘的时间间隔，单位为秒  
\# 注意：tracker server 的日志不是时时写硬盘的，而是先写内存  
\# sync log buff to disk every interval seconds  
\# default value is 10 seconds  
sync\_log\_buff\_interval = 10

\# 检測 storage server 存活的时间隔，单位为秒。  
\# storage server定期向tracker server 发心跳。假设tracker server在一个check\_active\_interval内还没有收到storage server的一次心跳，那边将觉得该storage server已经下线。所以本參数值必须大于storage server配置的心跳时间间隔。通常配置为storage server心跳时间间隔的2倍或3倍  
\# check storage server alive interval seconds  
check\_active\_interval = 120

\# 线程栈的大小。

FastDFS server端採用了线程方式。

tracker server线程栈不应小于64KB  
\# 线程栈越大，一个线程占用的系统资源就越多。

假设要启动很多其它的线程（V1.x相应的參数为max\_connections，  
V2.0为work\_threads）。能够适当减少本參数值  
\# thread stack size, should >= 64KB  
\# default value is 64KB  
thread\_stack\_size = 64KB

\# 这个參数控制当storage server IP地址改变时，集群是否自己主动调整。

注：仅仅有在storage server进程重新启动时才完毕自己主动调整  
\# auto adjust when the ip address of the storage server changed  
\# default value is true  
storage\_ip\_changed\_auto\_adjust = true

\# V2.0引入的參数。存储服务器之间同步文件的最大延迟时间。缺省为1天。

依据实际情况进行调整  
\# 注：本參数并不影响文件同步过程。本參数仅在下载文件时，推断文件是否已经被同步完毕的一个阀值（经验值）  
\# storage sync file max delay seconds  
\# default value is 86400 seconds (one day)  
\# since V2.00  
storage\_sync\_file\_max\_delay = 86400

\# V2.0引入的參数。存储服务器同步一个文件须要消耗的最大时间。缺省为300s。即5分钟。

\# 注：本參数并不影响文件同步过程。本參数仅在下载文件时，作为推断当前文件是否被同步完毕的一个阀值（经验值）  
\# the max time of storage sync a file  
\# default value is 300 seconds  
\# since V2.00  
storage\_sync\_file\_max\_time = 300

\# V3.0引入的參数。

是否使用小文件合并存储特性，缺省是关闭的  
\# if use a trunk file to store several small files  
\# default value is false  
\# since V3.00  
use\_trunk\_file = false

\# V3.0引入的參数。

\# trunk file分配的最小字节数。比方文件仅仅有16个字节。系统也会分配slot\_min\_size个字节  
\# the min slot size, should <= 4KB  
\# default value is 256 bytes  
\# since V3.00  
slot\_min\_size = 256

\# V3.0引入的參数。  
\# 仅仅有文件大小<=这个參数值的文件。才会合并存储。

假设一个文件的大小大于这个參数值。将直接保存到一个文件里（即不採用合并存储方式）。  
\# 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

\# V3.0引入的參数。  
\# 合并存储的trunk file大小，至少4MB，缺省值是64MB。

\#不建议设置得过大  
\# the trunk file size, should >= 4MB  
\# default value is 64MB  
\# since V3.00  
trunk\_file\_size = 64MB

\# 是否提前创建trunk file。仅仅有当这个參数为true，以下3个以trunk\_create\_file\_打头的參数才有效  
\# if create trunk file advancely  
\# default value is false  
\# since V3.06  
trunk\_create\_file\_advance = false

\# 提前创建trunk file的起始时间点（基准时间）。02:00表示第一次创建的时间点是凌晨2点  
\# 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

\# 创建trunk file的时间间隔，单位为秒。假设每天仅仅提前创建一次，则设置为86400  
\# the interval of create trunk file, unit: second  
\# default value is 38400 (one day)  
\# since V3.06  
trunk\_create\_file\_interval = 86400

\# 提前创建trunk file时，须要达到的空暇trunk大小  
\# 比方本參数为20G。而当前空暇trunk为4GB，那么仅仅须要创建16GB的trunk file就可以  
\# 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

\# trunk初始化时，是否检查可用空间是否被占用  
\# 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

\# 是否无条件从trunk binlog中载入trunk可用空间信息  
\# FastDFS缺省是从快照文件storage\_trunk.dat中载入trunk可用空间。  
\# 该文件的第一行记录的是trunk binlog的offset，然后从binlog的offset開始载入  
\# 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

\# 是否使用server ID作为storage server标识  
\# if use storage ID instead of IP address  
\# default value is false  
\# since V4.00  
use\_storage\_id = false

\# use\_storage\_id 设置为true，才须要设置本參数  
\# 在文件里设置组名、server ID和相应的IP地址。參见源代码文件夹下的配置演示样例：conf/storage\_ids.conf  
\# specify storage ids filename, can use relative or absolute path  
\# since V4.00  
storage\_ids\_filename = storage\_ids.conf

\#文件名称中的id类型，有ip和id两种，仅仅有当use\_storage\_id设置为true时该參数才有效  
\# 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

\# 存储从文件是否採用symbol link（符号链接）方式  
\# 假设设置为true。一个从文件将占用两个文件：原始文件及指向它的符号链接  
\# if store slave file use symbol link  
\# default value is false  
\# since V4.01  
store\_slave\_file\_use\_link = false

\# 是否定期轮转error log。眼下仅支持一天轮转一次  
\# if rotate the error log every day  
\# default value is false  
\# since V4.02  
rotate\_error\_log = false

\# error log定期轮转的时间点，仅仅有当rotate\_error\_log设置为true时有效  
\# 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

\# error log按大小轮转  
\# 设置为0表示不按文件大小轮转。否则当error log达到该大小。就会轮转到新文件里  
\# 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

\# 是否使用连接池  
\# if use connection pool  
\# default value is false  
\# since V4.05  
use\_connection\_pool = false

\# 假设一个连接的空暇时间超过这个值将会被自己主动关闭  
\# 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

\# 用于提供http服务的端口  
\# HTTP port on this tracker server  
http.server\_port=8080

\# 检查http server是否还在工作的时间间隔。假设该值小于0则永远不检查  
\# check storage HTTP server alive interval seconds  
\# <= 0 for never check  
\# default value is 30  
http.check\_alive\_interval=30

\# 检查http server是否存活的类型，有tcp和http两种  
\# tcp方式仅仅有http端口被连接  
\# http方式检查必须返回状态值200  
\# 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

**storage.conf 配置文件相关配置说明及注释**

\# 这个配置文件是否无效，false表示有效  
\# is this config file disabled  
\# false for enabled  
\# true for disabled  
disabled=false

\# 指定 此 storage server 所在组(卷)  
\# the name of the group this storage server belongs to  
group\_name=group1

\# 是否绑定IP  
\# bind\_addr= 后面为绑定的IP地址 (经常使用于服务器有多个IP但仅仅希望一个IP提供服务)。  
假设不填则表示全部的(一般不填就OK)  
\# bind an address of this host  
\# empty for bind all addresses of this host  
bind\_addr=

\# bind\_addr一般是针对server的。

当指定bind\_addr时。本參数才有效。

\# 本storage server作为client连接其它服务器（如tracker server、其它storage server）。是否绑定bind\_addr。  
\# if bind an address of this host when connect to other servers  
\# (this storage server as a client)  
\# true for binding the address configed by above parameter: "bind\_addr"  
\# false for binding any address of this host  
client\_bind=true

\# storage server服务端口  
\# the storage server port  
port=23000

\# 连接超时时间，针对socket套接字函数connect  
\# connect timeout in seconds  
\# default value is 30s  
connect\_timeout=30

\# storage server 网络超时时间，单位为秒。发送或接收数据时，假设在超时时间后还不能发送或接收数据，则本次网络通信失败。

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

\# 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 in seconds  
heart\_beat\_interval=30

\# storage server向tracker server报告磁盘剩余空间的时间间隔，单位为秒  
\# disk usage report interval in seconds  
stat\_report\_interval=60

\# base\_path 文件夹地址,根文件夹必须存在 子文件夹会自己主动生成 (注 :这里不是上传的文件存放的地址,之前是的,在某个版本号后更改了)  
\# the base path to store data and log files  
base\_path=/home/yuqing/fastdfs

\# 系统提供服务时的最大连接数  
\# max concurrent connections the server supported  
\# default value is 256  
\# more max\_connections means more memory will be used  
max\_connections=256

\# V2.0引入本參数。

设置队列结点的buffer大小。工作队列消耗的内存大小 = buff\_size \* max\_connections  
\# 设置得大一些，系统总体性能会有所提升。  
\# 消耗的内存请不要超过系统物理内存大小。

另外，对于32位系统，请注意使用到的内存不要超过3GB  
\# the buff size to recv / send data  
\# this parameter must more than 8KB  
\# default value is 64KB  
\# since V2.00  
buff\_size = 256KB

\# 工作线程的数量。工作线程用于处理网络IO，应当小于max\_connections的值  
\# work thread count, should <= max\_connections  
\# work thread deal network io  
\# default value is 4  
\# since V2.00  
work\_threads=4

\# V2.0引入本參数。

磁盘IO读写是否分离。缺省是分离的  
\# if disk read / write separated  
\#\# false for mixed read and write  
\#\# true for separated read and write  
\# default value is true  
\# since V2.00  
disk\_rw\_separated = true

\# V2.0引入本參数。针对单个存储路径的读线程数。缺省值为1。  
\# 读写分离时，系统中的读线程数 = disk\_reader\_threads \* store\_path\_count  
\# 读写混合时，系统中的读写线程数 = (disk\_reader\_threads + disk\_writer\_threads) \* store\_path\_count  
\# disk reader thread count per store base path  
\# for mixed read / write, this parameter can be 0  
\# default value is 1  
\# since V2.00  
disk\_reader\_threads = 1

\# V2.0引入本參数。针对单个存储路径的写线程数，缺省值为1。  
\# 读写分离时，系统中的写线程数 = disk\_writer\_threads \* store\_path\_count  
\# 读写混合时，系统中的读写线程数 = (disk\_reader\_threads + disk\_writer\_threads) \* store\_path\_count  
\# disk writer thread count per store base path  
\# for mixed read / write, this parameter can be 0  
\# default value is 1  
\# since V2.00  
disk\_writer\_threads = 1

\# 同步文件时，假设从binlog中没有读到要同步的文件。休眠N毫秒后又一次读取。0表示不休眠，马上再次尝试读取。  
\# 出于CPU消耗考虑，不建议设置为0。怎样希望同步尽可能快一些，能够将本參数设置得小一些，比方设置为10ms  
\# when no entry to sync, try read binlog again after X milliseconds  
\# must > 0, default value is 200ms  
sync\_wait\_msec=50

\# 同步上一个文件后，再同步下一个文件的时间间隔。单位为毫秒，0表示不休眠。直接同步下一个文件。

\# after sync a file, usleep milliseconds  
\# 0 for sync successively (never call usleep)  
sync\_interval=0

\# 以下二个一起解释。同意系统同步的时间段 (默认是全天) 。一般用于避免高峰同步产生一些问题而设定，相信sa都会明确  
\# storage sync start time of a day, time format: Hour:Minute  
\# Hour from 0 to 23, Minute from 0 to 59  
sync\_start\_time=00:00

\# storage sync end time of a day, time format: Hour:Minute  
\# Hour from 0 to 23, Minute from 0 to 59  
sync\_end\_time=23:59

\# 同步完N个文件后，把storage的mark文件同步到磁盘  
\# 注：假设mark文件内容没有变化，则不会同步  
\# write to the mark file after sync N files  
\# default value is 500  
write\_mark\_file\_freq=500

\# 存放文件时storage server支持多个路径（比如磁盘）。这里配置存放文件的基路径数目。通常仅仅配一个文件夹。  
\# path(disk or mount point) count, default value is 1  
store\_path\_count=1

\# 逐一配置store\_path个路径，索引號基于0。注意配置方法后面有0,1,2 ......，须要配置0到store\_path - 1。

\# 假设不配置base\_path0，那边它就和base\_path相应的路径一样。

\# store\_path\#, based 0, if store\_path0 not exists, it's value is base\_path  
\# the paths must be exist  
store\_path0=/home/yuqing/fastdfs  
\#store\_path1=/home/yuqing/fastdfs2

\# FastDFS存储文件时，採用了两级文件夹。

这里配置存放文件的文件夹个数 (系统的存储机制,大家看看文件存储的文件夹就知道了)  
\# 假设本參数仅仅为N（如：256），那么storage server在初次执行时。会自己主动创建 N \* N 个存放文件的子文件夹。  
\# subdir\_count \* subdir\_count directories will be auto created under each  
\# store\_path (disk), value can be 1 to 256, default value is 256  
subdir\_count\_per\_path=256

\# tracker\_server 的列表 要写端口的哦 (再次提醒是主动连接tracker\_server )  
\# 有多个tracker server时，每一个tracker server写一行  
\# tracker\_server can ocur more than once, and tracker\_server format is  
\# "host:port", host can be hostname or ip address  
tracker\_server=192.168.209.121:22122

\# 日志级别  
\#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

\# 操作系统执行FastDFS的用户 (不填 就是当前用户,哪个启动进程就是哪个)  
\#unix username to run this program,  
\#not set (empty) means run by current user  
run\_by\_user=

\# 同意连接本storage server的IP地址列表 （不包含自带HTTP服务的全部连接）  
\# 能够配置多行，每行都会起作用  
\# 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=\*

\# 文件在data文件夹下分散存储策略。  
\# 0: 轮流存放。在一个文件夹下存储设置的文件数后（參数file\_distribute\_rotate\_count中设置文件数），使用下一个文件夹进行存储。  
\# 1: 随机存储，依据文件名称相应的hash code来分散存储。

\# the mode of the files distributed to the data path  
\# 0: round robin(default)  
\# 1: random, distributted by hash code  
file\_distribute\_path\_mode=0

\# 当上面的參数file\_distribute\_path\_mode配置为0（轮流存放方式）时，本參数有效。  
\# 当一个文件夹下的文件存放的文件数达到本參数值时，兴许上传的文件存储到下一个文件夹中。  
\# valid when file\_distribute\_to\_path is set to 0 (round robin),  
\# when the written file count reaches this number, then rotate to next path  
\# default value is 100  
file\_distribute\_rotate\_count=100

\# 当写入大文件时，每写入N个字节，调用一次系统函数fsync将内容强行同步到硬盘。0表示从不调用fsync  
\# call fsync to disk when write big file  
\# 0: never call fsync  
\# other: call fsync when written bytes >= this bytes  
\# default value is 0 (never call fsync)  
fsync\_after\_written\_bytes=0

\# 同步或刷新日志信息到硬盘的时间间隔，单位为秒  
\# 注意：storage server 的日志信息不是时时写硬盘的。而是先写内存。  
\# sync log buff to disk every interval seconds  
\# must > 0, default value is 10 seconds  
sync\_log\_buff\_interval=10

\# 同步binglog（更新操作日志）到硬盘的时间间隔。单位为秒  
\# 本參数会影响新上传文件同步延迟时间  
\# sync binlog buff / cache to disk every interval seconds  
\# default value is 60 seconds  
sync\_binlog\_buff\_interval=10

\# 把storage的stat文件同步到磁盘的时间间隔，单位为秒。

\# 注：假设stat文件内容没有变化，不会进行同步  
\# sync storage stat info to disk every interval seconds  
\# default value is 300 seconds  
sync\_stat\_file\_interval=300

\# 线程栈的大小。

FastDFS server端採用了线程方式。

\# 对于V1.x，storage server线程栈不应小于512KB；对于V2.0。线程栈大于等于128KB就可以。

\# 线程栈越大，一个线程占用的系统资源就越多。

\# 对于V1.x，假设要启动很多其它的线程（max\_connections），能够适当减少本參数值。  
\# thread stack size, should >= 512KB  
\# default value is 512KB  
thread\_stack\_size=512KB

\# 本storage server作为源服务器，上传文件的优先级，能够为负数。值越小。优先级越高。这里就和 tracker.conf 中store\_server= 2时的配置相相应了  
\# the priority as a source server for uploading file.  
\# the lower this value, the higher its uploading priority.  
\# default value is 10  
upload\_priority=10

\# 网卡别名前缀，就像Linux中的eth，能够使用ifconfig -a命令来查看  
\# 多个别名之间使用逗号分隔。假设不设置这个值表示自己主动的被系统类型设置  
\# the NIC alias prefix, such as eth in Linux, you can see it by ifconfig -a  
\# multi aliases split by comma. empty value means auto set by OS type  
\# default values is empty  
if\_alias\_prefix=

\# 是否检測上传文件已经存在。假设已经存在，则不存在文件内容，建立一个符号链接以节省磁盘空间。  
\# 这个应用要配合FastDHT 使用。所以打开前要先安装FastDHT  
\# 1或yes 是检測，0或no 是不检測  
\# if check file duplicate, when set to true, use FastDHT to store file indexes  
\# 1 or yes: need check  
\# 0 or no: do not check  
\# default value is 0  
check\_file\_duplicate=0

\# 文件去重时，文件内容的签名方式：  
\# hash： 4个hash code  
\# md5：MD5  
\# file signature method for check file duplicate  
\#\# hash: four 32 bits hash code  
\#\# md5: MD5 signature  
\# default value is hash  
\# since V4.01  
file\_signature\_method=hash

\# 当上个參数设定为1 或 yes时 (true/on也是能够的) 。 在FastDHT中的命名空间  
\# namespace for storing file indexes (key-value pairs)  
\# this item must be set when check\_file\_duplicate is true / on  
key\_namespace=FastDFS

\# 与FastDHT servers 的连接方式 (是否为持久连接) 。默认是0（短连接方式）。能够考虑使用长连接，这要看FastDHT server的连接数是否够用。  
\# set keep\_alive to 1 to enable persistent connection with FastDHT servers  
\# default value is 0 (short connection)  
keep\_alive=0

\# 以下是关于FastDHT servers 的设定 须要对FastDHT servers 有所了解,这里仅仅说字面意思了  
\# 能够通过 \#include filename 方式来载入 FastDHT servers 的配置。装上FastDHT就知道该怎样配置啦。  
\# 相同要求 check\_file\_duplicate=1 时才实用。不然系统会忽略  
\# fdht\_servers.conf 记载的是 FastDHT servers 列表  
\# you can use "\#include filename" (not include double quotes) directive to  
\# load FastDHT server list, when the filename is a relative path such as  
\# pure filename, the base path is the base path of current/this config file.  
\# must set FastDHT server list when check\_file\_duplicate is true / on  
\# please see INSTALL of FastDHT for detail  
\#\#include /home/yuqing/fastdht/conf/fdht\_servers.conf

\# 是否将文件操作记录到access log  
\# if log to access log  
\# default value is false  
\# since V4.00  
use\_access\_log = false

\# 是否定期轮转access log。眼下仅支持一天轮转一次  
\# if rotate the access log every day  
\# default value is false  
\# since V4.00  
rotate\_access\_log = false

\# access log定期轮转的时间点，仅仅有当rotate\_access\_log设置为true时有效  
\# rotate access log time base, time format: Hour:Minute  
\# Hour from 0 to 23, Minute from 0 to 59  
\# default value is 00:00  
\# since V4.00  
access\_log\_rotate\_time=00:00

\# 是否定期轮转error log。眼下仅支持一天轮转一次  
\# if rotate the error log every day  
\# default value is false  
\# since V4.02  
rotate\_error\_log = false

\# error log定期轮转的时间点。仅仅有当rotate\_error\_log设置为true时有效  
\# 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

\# access log按文件大小轮转  
\# 设置为0表示不按文件大小轮转。否则当access log达到该大小。就会轮转到新文件里  
\# rotate access 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\_access\_log\_size = 0

\# error log按文件大小轮转  
\# 设置为0表示不按文件大小轮转，否则当error log达到该大小，就会轮转到新文件里  
\# 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

\# 文件同步的时候，是否忽略无效的binlog记录  
\# if skip the invalid record when sync file  
\# default value is false  
\# since V4.02  
file\_sync\_skip\_invalid\_record=false

\# 是否使用连接池  
\# if use connection pool  
\# default value is false  
\# since V4.05  
use\_connection\_pool = false

\# storage server上web server域名。通常仅针对单独部署的web server。

\# 这样URL中就能够通过域名方式来訪问storage server上的文件了，  
\# 这个參数为空就是IP地址的方式。  
\# use the ip address of this storage server if domain\_name is empty,  
\# else this domain name will ocur in the url redirected by the tracker server  
http.domain\_name=

\# web server的端口  
\# the port of the web server on this storage server  
http.server\_port=8888

**client.conf 配置文件相关配置说明及注释**

\# 连接超时时间，针对socket套接字函数connect  
\# connect timeout in seconds  
\# default value is 30s  
connect\_timeout=30

\# client的网络超时，单位为秒。  
\#发送或接收数据时。假设在超时时间后还不能发送或接收数据，则本次网络通信失败  
\# network timeout in seconds  
\# default value is 30s  
network\_timeout=60

\# 存储日志的根文件夹  
\# the base path to store log files  
base\_path=/home/yuqing/fastdfs

\# tracker\_server 的列表 要写端口  
\# tracker\_server can ocur more than once, and tracker\_server format is  
\# "host:port", host can be hostname or ip address  
tracker\_server=192.168.0.197:22122

\# 日志的级别  
\#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

\# 是否使用连接池  
\# if use connection pool  
\# default value is false  
\# since V4.05  
use\_connection\_pool = false

\# 是否从FastDFS的tracker server载入參数  
\# if load FastDFS parameters from tracker server  
\# since V4.05  
\# default value is false  
load\_fdfs\_parameters\_from\_tracker=false

是否使用storage ID 取代IP，仅仅有当load\_fdfs\_parameters\_from\_tracker为false时才有效  
\# if use storage ID instead of IP address  
\# same as tracker.conf  
\# valid only when load\_fdfs\_parameters\_from\_tracker is false  
\# default value is false  
\# since V4.05  
use\_storage\_id = false

\# 指定storage\_ids的路径，能够使用绝对路径和相对路径，仅仅有当load\_fdfs\_parameters\_from\_tracker为false时才有效  
\# specify storage ids filename, can use relative or absolute path  
\# same as tracker.conf  
\# valid only when load\_fdfs\_parameters\_from\_tracker is false  
\# since V4.05  
storage\_ids\_filename = storage\_ids.conf

\#tracker server的http端口  
\#HTTP settings  
http.tracker\_server\_port=8080

\#use "\#include" directive to include HTTP other settiongs  
\#\#include http.conf

转载于:https://www.cnblogs.com/yxfcnbg/p/11543233.html